1
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{"version":3,"file":"./bundle.js","sources":["webpack:///webpack/bootstrap bb221b9f263bde8ff2bc","webpack:///./~/tone/build/Tone.js","webpack:///./client/lib/util.js","webpack:///./~/validate.io-array/lib/index.js","webpack:///./client/lib/color.js","webpack:///./client/lib/kalimba.js","webpack:///./client/lib/keys.js","webpack:///./client/lib/organ.js","webpack:///./client/lib/output.js","webpack:///./client/lib/primes.js","webpack:///./~/compute-gcd/lib/index.js","webpack:///./client/index.js","webpack:///./client/lib/startAudioContext.js","webpack:///./~/validate.io-function/lib/index.js","webpack:///./~/validate.io-integer-array/lib/index.js","webpack:///./~/validate.io-integer/lib/index.js","webpack:///./~/validate.io-number/lib/index.js"],"sourcesContent":[" \t// The module cache\n \tvar installedModules = {};\n\n \t// The require function\n \tfunction __webpack_require__(moduleId) {\n\n \t\t// Check if module is in cache\n \t\tif(installedModules[moduleId]) {\n \t\t\treturn installedModules[moduleId].exports;\n \t\t}\n \t\t// Create a new module (and put it into the cache)\n \t\tvar module = installedModules[moduleId] = {\n \t\t\ti: moduleId,\n \t\t\tl: false,\n \t\t\texports: {}\n \t\t};\n\n \t\t// Execute the module function\n \t\tmodules[moduleId].call(module.exports, module, module.exports, __webpack_require__);\n\n \t\t// Flag the module as loaded\n \t\tmodule.l = true;\n\n \t\t// Return the exports of the module\n \t\treturn module.exports;\n \t}\n\n\n \t// expose the modules object (__webpack_modules__)\n \t__webpack_require__.m = modules;\n\n \t// expose the module cache\n \t__webpack_require__.c = installedModules;\n\n \t// identity function for calling harmony imports with the correct context\n \t__webpack_require__.i = function(value) { return value; };\n\n \t// define getter function for harmony exports\n \t__webpack_require__.d = function(exports, name, getter) {\n \t\tif(!__webpack_require__.o(exports, name)) {\n \t\t\tObject.defineProperty(exports, name, {\n \t\t\t\tconfigurable: false,\n \t\t\t\tenumerable: true,\n \t\t\t\tget: getter\n \t\t\t});\n \t\t}\n \t};\n\n \t// getDefaultExport function for compatibility with non-harmony modules\n \t__webpack_require__.n = function(module) {\n \t\tvar getter = module && module.__esModule ?\n \t\t\tfunction getDefault() { return module['default']; } :\n \t\t\tfunction getModuleExports() { return module; };\n \t\t__webpack_require__.d(getter, 'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = 10);\n\n\n\n// WEBPACK FOOTER //\n// webpack/bootstrap bb221b9f263bde8ff2bc","(function(root, factory){\n\n\t//UMD\n\tif ( typeof define === \"function\" && define.amd ) {\n\t\tdefine(function() {\n\t\t\treturn factory();\n\t\t});\n\t} else if (typeof module === \"object\") {\n\t\tmodule.exports = factory();\n \t} else {\n\t\troot.Tone = factory();\n\t}\n\n}(this, function(){\n\n\t\"use strict\";\n\t\n\tvar Tone;\n\t//constructs the main Tone object\n\tfunction Main(func){\n\t\tTone = func();\n\t}\n\t//invokes each of the modules with the main Tone object as the argument\n\tfunction Module(func){\n\t\tfunc(Tone);\n\t}\t/**\n\t * Tone.js\n\t * @author Yotam Mann\n\t * @license http://opensource.org/licenses/MIT MIT License\n\t * @copyright 2014-2017 Yotam Mann\n\t */\n\tMain(function () {\n\t \n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tTONE\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * @class Tone is the base class of all other classes. It provides \n\t\t * a lot of methods and functionality to all classes that extend\n\t\t * it. \n\t\t * \n\t\t * @constructor\n\t\t * @alias Tone\n\t\t * @param {number} [inputs=1] the number of input nodes\n\t\t * @param {number} [outputs=1] the number of output nodes\n\t\t */\n\t var Tone = function (inputs, outputs) {\n\t /**\n\t\t\t * the input node(s)\n\t\t\t * @type {GainNode|Array}\n\t\t\t */\n\t if (this.isUndef(inputs) || inputs === 1) {\n\t this.input = this.context.createGain();\n\t } else if (inputs > 1) {\n\t this.input = new Array(inputs);\n\t }\n\t /**\n\t\t\t * the output node(s)\n\t\t\t * @type {GainNode|Array}\n\t\t\t */\n\t if (this.isUndef(outputs) || outputs === 1) {\n\t this.output = this.context.createGain();\n\t } else if (outputs > 1) {\n\t this.output = new Array(inputs);\n\t }\n\t };\n\t /**\n\t\t * Set the parameters at once. Either pass in an\n\t\t * object mapping parameters to values, or to set a\n\t\t * single parameter, by passing in a string and value.\n\t\t * The last argument is an optional ramp time which \n\t\t * will ramp any signal values to their destination value\n\t\t * over the duration of the rampTime.\n\t\t * @param {Object|string} params\n\t\t * @param {number=} value\n\t\t * @param {Time=} rampTime\n\t\t * @returns {Tone} this\n\t\t * @example\n\t\t * //set values using an object\n\t\t * filter.set({\n\t\t * \t\"frequency\" : 300,\n\t\t * \t\"type\" : highpass\n\t\t * });\n\t\t * @example\n\t\t * filter.set(\"type\", \"highpass\");\n\t\t * @example\n\t\t * //ramp to the value 220 over 3 seconds. \n\t\t * oscillator.set({\n\t\t * \t\"frequency\" : 220\n\t\t * }, 3);\n\t\t */\n\t Tone.prototype.set = function (params, value, rampTime) {\n\t if (this.isObject(params)) {\n\t rampTime = value;\n\t } else if (this.isString(params)) {\n\t var tmpObj = {};\n\t tmpObj[params] = value;\n\t params = tmpObj;\n\t }\n\t paramLoop:\n\t for (var attr in params) {\n\t value = params[attr];\n\t var parent = this;\n\t if (attr.indexOf('.') !== -1) {\n\t var attrSplit = attr.split('.');\n\t for (var i = 0; i < attrSplit.length - 1; i++) {\n\t parent = parent[attrSplit[i]];\n\t if (parent instanceof Tone) {\n\t attrSplit.splice(0, i + 1);\n\t var innerParam = attrSplit.join('.');\n\t parent.set(innerParam, value);\n\t continue paramLoop;\n\t }\n\t }\n\t attr = attrSplit[attrSplit.length - 1];\n\t }\n\t var param = parent[attr];\n\t if (this.isUndef(param)) {\n\t continue;\n\t }\n\t if (Tone.Signal && param instanceof Tone.Signal || Tone.Param && param instanceof Tone.Param) {\n\t if (param.value !== value) {\n\t if (this.isUndef(rampTime)) {\n\t param.value = value;\n\t } else {\n\t param.rampTo(value, rampTime);\n\t }\n\t }\n\t } else if (param instanceof AudioParam) {\n\t if (param.value !== value) {\n\t param.value = value;\n\t }\n\t } else if (param instanceof Tone) {\n\t param.set(value);\n\t } else if (param !== value) {\n\t parent[attr] = value;\n\t }\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Get the object's attributes. Given no arguments get\n\t\t * will return all available object properties and their corresponding\n\t\t * values. Pass in a single attribute to retrieve or an array\n\t\t * of attributes. The attribute strings can also include a \".\"\n\t\t * to access deeper properties.\n\t\t * @example\n\t\t * osc.get();\n\t\t * //returns {\"type\" : \"sine\", \"frequency\" : 440, ...etc}\n\t\t * @example\n\t\t * osc.get(\"type\");\n\t\t * //returns { \"type\" : \"sine\"}\n\t\t * @example\n\t\t * //use dot notation to access deep properties\n\t\t * synth.get([\"envelope.attack\", \"envelope.release\"]);\n\t\t * //returns {\"envelope\" : {\"attack\" : 0.2, \"release\" : 0.4}}\n\t\t * @param {Array=|string|undefined} params the parameters to get, otherwise will return \n\t\t * \t\t\t\t\t all available.\n\t\t * @returns {Object}\n\t\t */\n\t Tone.prototype.get = function (params) {\n\t if (this.isUndef(params)) {\n\t params = this._collectDefaults(this.constructor);\n\t } else if (this.isString(params)) {\n\t params = [params];\n\t }\n\t var ret = {};\n\t for (var i = 0; i < params.length; i++) {\n\t var attr = params[i];\n\t var parent = this;\n\t var subRet = ret;\n\t if (attr.indexOf('.') !== -1) {\n\t var attrSplit = attr.split('.');\n\t for (var j = 0; j < attrSplit.length - 1; j++) {\n\t var subAttr = attrSplit[j];\n\t subRet[subAttr] = subRet[subAttr] || {};\n\t subRet = subRet[subAttr];\n\t parent = parent[subAttr];\n\t }\n\t attr = attrSplit[attrSplit.length - 1];\n\t }\n\t var param = parent[attr];\n\t if (this.isObject(params[attr])) {\n\t subRet[attr] = param.get();\n\t } else if (Tone.Signal && param instanceof Tone.Signal) {\n\t subRet[attr] = param.value;\n\t } else if (Tone.Param && param instanceof Tone.Param) {\n\t subRet[attr] = param.value;\n\t } else if (param instanceof AudioParam) {\n\t subRet[attr] = param.value;\n\t } else if (param instanceof Tone) {\n\t subRet[attr] = param.get();\n\t } else if (!this.isFunction(param) && !this.isUndef(param)) {\n\t subRet[attr] = param;\n\t }\n\t }\n\t return ret;\n\t };\n\t /**\n\t\t * collect all of the default attributes in one\n\t\t * @private\n\t\t * @param {function} constr the constructor to find the defaults from\n\t\t * @return {Array} all of the attributes which belong to the class\n\t\t */\n\t Tone.prototype._collectDefaults = function (constr) {\n\t var ret = [];\n\t if (!this.isUndef(constr.defaults)) {\n\t ret = Object.keys(constr.defaults);\n\t }\n\t if (!this.isUndef(constr._super)) {\n\t var superDefs = this._collectDefaults(constr._super);\n\t //filter out repeats\n\t for (var i = 0; i < superDefs.length; i++) {\n\t if (ret.indexOf(superDefs[i]) === -1) {\n\t ret.push(superDefs[i]);\n\t }\n\t }\n\t }\n\t return ret;\n\t };\n\t /**\n\t\t * @returns {string} returns the name of the class as a string\n\t\t */\n\t Tone.prototype.toString = function () {\n\t for (var className in Tone) {\n\t var isLetter = className[0].match(/^[A-Z]$/);\n\t var sameConstructor = Tone[className] === this.constructor;\n\t if (this.isFunction(Tone[className]) && isLetter && sameConstructor) {\n\t return className;\n\t }\n\t }\n\t return 'Tone';\n\t };\n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tCLASS VARS\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * The number of inputs feeding into the AudioNode. \n\t\t * For source nodes, this will be 0.\n\t\t * @memberOf Tone#\n\t\t * @name numberOfInputs\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone.prototype, 'numberOfInputs', {\n\t get: function () {\n\t if (this.input) {\n\t if (this.isArray(this.input)) {\n\t return this.input.length;\n\t } else {\n\t return 1;\n\t }\n\t } else {\n\t return 0;\n\t }\n\t }\n\t });\n\t /**\n\t\t * The number of outputs coming out of the AudioNode. \n\t\t * For source nodes, this will be 0.\n\t\t * @memberOf Tone#\n\t\t * @name numberOfInputs\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone.prototype, 'numberOfOutputs', {\n\t get: function () {\n\t if (this.output) {\n\t if (this.isArray(this.output)) {\n\t return this.output.length;\n\t } else {\n\t return 1;\n\t }\n\t } else {\n\t return 0;\n\t }\n\t }\n\t });\n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tCONNECTIONS\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * disconnect and dispose\n\t\t * @returns {Tone} this\n\t\t */\n\t Tone.prototype.dispose = function () {\n\t if (!this.isUndef(this.input)) {\n\t if (this.input instanceof AudioNode) {\n\t this.input.disconnect();\n\t }\n\t this.input = null;\n\t }\n\t if (!this.isUndef(this.output)) {\n\t if (this.output instanceof AudioNode) {\n\t this.output.disconnect();\n\t }\n\t this.output = null;\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * connect the output of a ToneNode to an AudioParam, AudioNode, or ToneNode\n\t\t * @param {Tone | AudioParam | AudioNode} unit \n\t\t * @param {number} [outputNum=0] optionally which output to connect from\n\t\t * @param {number} [inputNum=0] optionally which input to connect to\n\t\t * @returns {Tone} this\n\t\t */\n\t Tone.prototype.connect = function (unit, outputNum, inputNum) {\n\t if (Array.isArray(this.output)) {\n\t outputNum = this.defaultArg(outputNum, 0);\n\t this.output[outputNum].connect(unit, 0, inputNum);\n\t } else {\n\t this.output.connect(unit, outputNum, inputNum);\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * disconnect the output\n\t\t * @param {Number|AudioNode} output Either the output index to disconnect\n\t\t * if the output is an array, or the\n\t\t * node to disconnect from.\n\t\t * @returns {Tone} this\n\t\t */\n\t Tone.prototype.disconnect = function (destination, outputNum, inputNum) {\n\t if (this.isArray(this.output)) {\n\t if (this.isNumber(destination)) {\n\t this.output[destination].disconnect();\n\t } else {\n\t outputNum = this.defaultArg(outputNum, 0);\n\t this.output[outputNum].disconnect(destination, 0, inputNum);\n\t }\n\t } else {\n\t this.output.disconnect.apply(this.output, arguments);\n\t }\n\t };\n\t /**\n\t\t * connect together all of the arguments in series\n\t\t * @param {...AudioParam|Tone|AudioNode} nodes\n\t\t * @returns {Tone} this\n\t\t */\n\t Tone.prototype.connectSeries = function () {\n\t if (arguments.length > 1) {\n\t var currentUnit = arguments[0];\n\t for (var i = 1; i < arguments.length; i++) {\n\t var toUnit = arguments[i];\n\t currentUnit.connect(toUnit);\n\t currentUnit = toUnit;\n\t }\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Connect the output of this node to the rest of the nodes in series.\n\t\t * @example\n\t\t * //connect a node to an effect, panVol and then to the master output\n\t\t * node.chain(effect, panVol, Tone.Master);\n\t\t * @param {...AudioParam|Tone|AudioNode} nodes\n\t\t * @returns {Tone} this\n\t\t */\n\t Tone.prototype.chain = function () {\n\t if (arguments.length > 0) {\n\t var currentUnit = this;\n\t for (var i = 0; i < arguments.length; i++) {\n\t var toUnit = arguments[i];\n\t currentUnit.connect(toUnit);\n\t currentUnit = toUnit;\n\t }\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * connect the output of this node to the rest of the nodes in parallel.\n\t\t * @param {...AudioParam|Tone|AudioNode} nodes\n\t\t * @returns {Tone} this\n\t\t */\n\t Tone.prototype.fan = function () {\n\t if (arguments.length > 0) {\n\t for (var i = 0; i < arguments.length; i++) {\n\t this.connect(arguments[i]);\n\t }\n\t }\n\t return this;\n\t };\n\t //give native nodes chain and fan methods\n\t AudioNode.prototype.chain = Tone.prototype.chain;\n\t AudioNode.prototype.fan = Tone.prototype.fan;\n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tUTILITIES / HELPERS / MATHS\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * If the `given` parameter is undefined, use the `fallback`. \n\t\t * If both `given` and `fallback` are object literals, it will\n\t\t * return a deep copy which includes all of the parameters from both \n\t\t * objects. If a parameter is undefined in given, it will return\n\t\t * the fallback property. \n\t\t * <br><br>\n\t\t * WARNING: if object is self referential, it will go into an an \n\t\t * infinite recursive loop.\n\t\t * \n\t\t * @param {*} given \n\t\t * @param {*} fallback \n\t\t * @return {*} \n\t\t */\n\t Tone.prototype.defaultArg = function (given, fallback) {\n\t if (this.isObject(given) && this.isObject(fallback)) {\n\t var ret = {};\n\t //make a deep copy of the given object\n\t for (var givenProp in given) {\n\t ret[givenProp] = this.defaultArg(fallback[givenProp], given[givenProp]);\n\t }\n\t for (var fallbackProp in fallback) {\n\t ret[fallbackProp] = this.defaultArg(given[fallbackProp], fallback[fallbackProp]);\n\t }\n\t return ret;\n\t } else {\n\t return this.isUndef(given) ? fallback : given;\n\t }\n\t };\n\t /**\n\t\t * returns the args as an options object with given arguments\n\t\t * mapped to the names provided. \n\t\t *\n\t\t * if the args given is an array containing only one object, it is assumed\n\t\t * that that's already the options object and will just return it. \n\t\t * \n\t\t * @param {Array} values the 'arguments' object of the function\n\t\t * @param {Array} keys the names of the arguments as they\n\t\t * should appear in the options object\n\t\t * @param {Object=} defaults optional defaults to mixin to the returned \n\t\t * options object \n\t\t * @return {Object} the options object with the names mapped to the arguments\n\t\t */\n\t Tone.prototype.optionsObject = function (values, keys, defaults) {\n\t var options = {};\n\t if (values.length === 1 && this.isObject(values[0])) {\n\t options = values[0];\n\t } else {\n\t for (var i = 0; i < keys.length; i++) {\n\t options[keys[i]] = values[i];\n\t }\n\t }\n\t if (!this.isUndef(defaults)) {\n\t return this.defaultArg(options, defaults);\n\t } else {\n\t return options;\n\t }\n\t };\n\t ///////////////////////////////////////////////////////////////////////////\n\t // TYPE CHECKING\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * test if the arg is undefined\n\t\t * @param {*} arg the argument to test\n\t\t * @returns {boolean} true if the arg is undefined\n\t\t * @function\n\t\t */\n\t Tone.prototype.isUndef = function (val) {\n\t return typeof val === 'undefined';\n\t };\n\t /**\n\t\t * test if the arg is a function\n\t\t * @param {*} arg the argument to test\n\t\t * @returns {boolean} true if the arg is a function\n\t\t * @function\n\t\t */\n\t Tone.prototype.isFunction = function (val) {\n\t return typeof val === 'function';\n\t };\n\t /**\n\t\t * Test if the argument is a number.\n\t\t * @param {*} arg the argument to test\n\t\t * @returns {boolean} true if the arg is a number\n\t\t */\n\t Tone.prototype.isNumber = function (arg) {\n\t return typeof arg === 'number';\n\t };\n\t /**\n\t\t * Test if the given argument is an object literal (i.e. `{}`);\n\t\t * @param {*} arg the argument to test\n\t\t * @returns {boolean} true if the arg is an object literal.\n\t\t */\n\t Tone.prototype.isObject = function (arg) {\n\t return Object.prototype.toString.call(arg) === '[object Object]' && arg.constructor === Object;\n\t };\n\t /**\n\t\t * Test if the argument is a boolean.\n\t\t * @param {*} arg the argument to test\n\t\t * @returns {boolean} true if the arg is a boolean\n\t\t */\n\t Tone.prototype.isBoolean = function (arg) {\n\t return typeof arg === 'boolean';\n\t };\n\t /**\n\t\t * Test if the argument is an Array\n\t\t * @param {*} arg the argument to test\n\t\t * @returns {boolean} true if the arg is an array\n\t\t */\n\t Tone.prototype.isArray = function (arg) {\n\t return Array.isArray(arg);\n\t };\n\t /**\n\t\t * Test if the argument is a string.\n\t\t * @param {*} arg the argument to test\n\t\t * @returns {boolean} true if the arg is a string\n\t\t */\n\t Tone.prototype.isString = function (arg) {\n\t return typeof arg === 'string';\n\t };\n\t /**\n\t\t * An empty function.\n\t\t * @static\n\t\t */\n\t Tone.noOp = function () {\n\t };\n\t /**\n\t\t * Make the property not writable. Internal use only. \n\t\t * @private\n\t\t * @param {string} property the property to make not writable\n\t\t */\n\t Tone.prototype._readOnly = function (property) {\n\t if (Array.isArray(property)) {\n\t for (var i = 0; i < property.length; i++) {\n\t this._readOnly(property[i]);\n\t }\n\t } else {\n\t Object.defineProperty(this, property, {\n\t writable: false,\n\t enumerable: true\n\t });\n\t }\n\t };\n\t /**\n\t\t * Make an attribute writeable. Interal use only. \n\t\t * @private\n\t\t * @param {string} property the property to make writable\n\t\t */\n\t Tone.prototype._writable = function (property) {\n\t if (Array.isArray(property)) {\n\t for (var i = 0; i < property.length; i++) {\n\t this._writable(property[i]);\n\t }\n\t } else {\n\t Object.defineProperty(this, property, { writable: true });\n\t }\n\t };\n\t /**\n\t\t * Possible play states. \n\t\t * @enum {string}\n\t\t */\n\t Tone.State = {\n\t Started: 'started',\n\t Stopped: 'stopped',\n\t Paused: 'paused'\n\t };\n\t ///////////////////////////////////////////////////////////////////////////\n\t // CONVERSIONS\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * Equal power gain scale. Good for cross-fading.\n\t\t * @param {NormalRange} percent (0-1)\n\t\t * @return {Number} output gain (0-1)\n\t\t */\n\t Tone.prototype.equalPowerScale = function (percent) {\n\t var piFactor = 0.5 * Math.PI;\n\t return Math.sin(percent * piFactor);\n\t };\n\t /**\n\t\t * Convert decibels into gain.\n\t\t * @param {Decibels} db\n\t\t * @return {Number} \n\t\t */\n\t Tone.prototype.dbToGain = function (db) {\n\t return Math.pow(2, db / 6);\n\t };\n\t /**\n\t\t * Convert gain to decibels.\n\t\t * @param {Number} gain (0-1)\n\t\t * @return {Decibels} \n\t\t */\n\t Tone.prototype.gainToDb = function (gain) {\n\t return 20 * (Math.log(gain) / Math.LN10);\n\t };\n\t /**\n\t\t * Convert an interval (in semitones) to a frequency ratio.\n\t\t * @param {Interval} interval the number of semitones above the base note\n\t\t * @return {number} the frequency ratio\n\t\t * @example\n\t\t * tone.intervalToFrequencyRatio(0); // 1\n\t\t * tone.intervalToFrequencyRatio(12); // 2\n\t\t * tone.intervalToFrequencyRatio(-12); // 0.5\n\t\t */\n\t Tone.prototype.intervalToFrequencyRatio = function (interval) {\n\t return Math.pow(2, interval / 12);\n\t };\n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tTIMING\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * Return the current time of the AudioContext clock.\n\t\t * @return {Number} the currentTime from the AudioContext\n\t\t */\n\t Tone.prototype.now = function () {\n\t return Tone.context.now();\n\t };\n\t /**\n\t\t * Return the current time of the AudioContext clock.\n\t\t * @return {Number} the currentTime from the AudioContext\n\t\t * @static\n\t\t */\n\t Tone.now = function () {\n\t return Tone.context.now();\n\t };\n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tINHERITANCE\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * have a child inherit all of Tone's (or a parent's) prototype\n\t\t * to inherit the parent's properties, make sure to call \n\t\t * Parent.call(this) in the child's constructor\n\t\t *\n\t\t * based on closure library's inherit function\n\t\t *\n\t\t * @static\n\t\t * @param {function} \tchild \n\t\t * @param {function=} parent (optional) parent to inherit from\n\t\t * if no parent is supplied, the child\n\t\t * will inherit from Tone\n\t\t */\n\t Tone.extend = function (child, parent) {\n\t if (Tone.prototype.isUndef(parent)) {\n\t parent = Tone;\n\t }\n\t function TempConstructor() {\n\t }\n\t TempConstructor.prototype = parent.prototype;\n\t child.prototype = new TempConstructor();\n\t /** @override */\n\t child.prototype.constructor = child;\n\t child._super = parent;\n\t };\n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tCONTEXT\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * The private audio context shared by all Tone Nodes. \n\t\t * @private\n\t\t * @type {Tone.Context|undefined}\n\t\t */\n\t var audioContext;\n\t /**\n\t\t * A static pointer to the audio context accessible as Tone.context. \n\t\t * @type {Tone.Context}\n\t\t * @name context\n\t\t * @memberOf Tone\n\t\t */\n\t Object.defineProperty(Tone, 'context', {\n\t get: function () {\n\t return audioContext;\n\t },\n\t set: function (context) {\n\t if (Tone.Context && context instanceof Tone.Context) {\n\t audioContext = context;\n\t } else {\n\t audioContext = new Tone.Context(context);\n\t }\n\t //initialize the new audio context\n\t if (Tone.Context) {\n\t Tone.Context.emit('init', audioContext);\n\t }\n\t }\n\t });\n\t /**\n\t\t * The AudioContext\n\t\t * @type {Tone.Context}\n\t\t * @name context\n\t\t * @memberOf Tone#\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone.prototype, 'context', {\n\t get: function () {\n\t return Tone.context;\n\t }\n\t });\n\t /**\n\t\t * Tone automatically creates a context on init, but if you are working\n\t\t * with other libraries which also create an AudioContext, it can be\n\t\t * useful to set your own. If you are going to set your own context, \n\t\t * be sure to do it at the start of your code, before creating any objects.\n\t\t * @static\n\t\t * @param {AudioContext} ctx The new audio context to set\n\t\t */\n\t Tone.setContext = function (ctx) {\n\t Tone.context = ctx;\n\t };\n\t /**\n\t\t * The number of seconds of 1 processing block (128 samples)\n\t\t * @type {Number}\n\t\t * @name blockTime\n\t\t * @memberOf Tone#\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone.prototype, 'blockTime', {\n\t get: function () {\n\t return 128 / this.context.sampleRate;\n\t }\n\t });\n\t /**\n\t\t * The duration in seconds of one sample.\n\t\t * @type {Number}\n\t\t * @name sampleTime\n\t\t * @memberOf Tone#\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone.prototype, 'sampleTime', {\n\t get: function () {\n\t return 1 / this.context.sampleRate;\n\t }\n\t });\n\t /**\n\t\t * Whether or not all the technologies that Tone.js relies on are supported by the current browser. \n\t\t * @type {Boolean}\n\t\t * @name supported\n\t\t * @memberOf Tone\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone, 'supported', {\n\t get: function () {\n\t var hasAudioContext = window.hasOwnProperty('AudioContext') || window.hasOwnProperty('webkitAudioContext');\n\t var hasPromises = window.hasOwnProperty('Promise');\n\t var hasWorkers = window.hasOwnProperty('Worker');\n\t return hasAudioContext && hasPromises && hasWorkers;\n\t }\n\t });\n\t Tone.version = 'r10';\n\t // allow optional silencing of this log\n\t if (!window.TONE_SILENCE_VERSION_LOGGING) {\n\t console.log('%c * Tone.js ' + Tone.version + ' * ', 'background: #000; color: #fff');\n\t }\n\t return Tone;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Base class for all Signals. Used Internally. \n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone}\n\t\t */\n\t Tone.SignalBase = function () {\n\t };\n\t Tone.extend(Tone.SignalBase);\n\t /**\n\t\t * When signals connect to other signals or AudioParams, \n\t\t * they take over the output value of that signal or AudioParam. \n\t\t * For all other nodes, the behavior is the same as a default <code>connect</code>. \n\t\t *\n\t\t * @override\n\t\t * @param {AudioParam|AudioNode|Tone.Signal|Tone} node \n\t\t * @param {number} [outputNumber=0] The output number to connect from.\n\t\t * @param {number} [inputNumber=0] The input number to connect to.\n\t\t * @returns {Tone.SignalBase} this\n\t\t */\n\t Tone.SignalBase.prototype.connect = function (node, outputNumber, inputNumber) {\n\t //zero it out so that the signal can have full control\n\t if (Tone.Signal && Tone.Signal === node.constructor || Tone.Param && Tone.Param === node.constructor || Tone.TimelineSignal && Tone.TimelineSignal === node.constructor) {\n\t //cancel changes\n\t node._param.cancelScheduledValues(0);\n\t //reset the value\n\t node._param.value = 0;\n\t //mark the value as overridden\n\t node.overridden = true;\n\t } else if (node instanceof AudioParam) {\n\t node.cancelScheduledValues(0);\n\t node.value = 0;\n\t }\n\t Tone.prototype.connect.call(this, node, outputNumber, inputNumber);\n\t return this;\n\t };\n\t return Tone.SignalBase;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Wraps the native Web Audio API \n\t\t * [WaveShaperNode](http://webaudio.github.io/web-audio-api/#the-waveshapernode-interface).\n\t\t *\n\t\t * @extends {Tone.SignalBase}\n\t\t * @constructor\n\t\t * @param {function|Array|Number} mapping The function used to define the values. \n\t\t * The mapping function should take two arguments: \n\t\t * the first is the value at the current position \n\t\t * and the second is the array position. \n\t\t * If the argument is an array, that array will be\n\t\t * set as the wave shaping function. The input\n\t\t * signal is an AudioRange [-1, 1] value and the output\n\t\t * signal can take on any numerical values. \n\t\t * \n\t\t * @param {Number} [bufferLen=1024] The length of the WaveShaperNode buffer.\n\t\t * @example\n\t\t * var timesTwo = new Tone.WaveShaper(function(val){\n\t\t * \treturn val * 2;\n\t\t * }, 2048);\n\t\t * @example\n\t\t * //a waveshaper can also be constructed with an array of values\n\t\t * var invert = new Tone.WaveShaper([1, -1]);\n\t\t */\n\t Tone.WaveShaper = function (mapping, bufferLen) {\n\t /**\n\t\t\t * the waveshaper\n\t\t\t * @type {WaveShaperNode}\n\t\t\t * @private\n\t\t\t */\n\t this._shaper = this.input = this.output = this.context.createWaveShaper();\n\t /**\n\t\t\t * the waveshapers curve\n\t\t\t * @type {Float32Array}\n\t\t\t * @private\n\t\t\t */\n\t this._curve = null;\n\t if (Array.isArray(mapping)) {\n\t this.curve = mapping;\n\t } else if (isFinite(mapping) || this.isUndef(mapping)) {\n\t this._curve = new Float32Array(this.defaultArg(mapping, 1024));\n\t } else if (this.isFunction(mapping)) {\n\t this._curve = new Float32Array(this.defaultArg(bufferLen, 1024));\n\t this.setMap(mapping);\n\t }\n\t };\n\t Tone.extend(Tone.WaveShaper, Tone.SignalBase);\n\t /**\n\t\t * Uses a mapping function to set the value of the curve. \n\t\t * @param {function} mapping The function used to define the values. \n\t\t * The mapping function take two arguments: \n\t\t * the first is the value at the current position \n\t\t * which goes from -1 to 1 over the number of elements\n\t\t * in the curve array. The second argument is the array position. \n\t\t * @returns {Tone.WaveShaper} this\n\t\t * @example\n\t\t * //map the input signal from [-1, 1] to [0, 10]\n\t\t * shaper.setMap(function(val, index){\n\t\t * \treturn (val + 1) * 5;\n\t\t * })\n\t\t */\n\t Tone.WaveShaper.prototype.setMap = function (mapping) {\n\t for (var i = 0, len = this._curve.length; i < len; i++) {\n\t var normalized = i / (len - 1) * 2 - 1;\n\t this._curve[i] = mapping(normalized, i);\n\t }\n\t this._shaper.curve = this._curve;\n\t return this;\n\t };\n\t /**\n\t\t * The array to set as the waveshaper curve. For linear curves\n\t\t * array length does not make much difference, but for complex curves\n\t\t * longer arrays will provide smoother interpolation. \n\t\t * @memberOf Tone.WaveShaper#\n\t\t * @type {Array}\n\t\t * @name curve\n\t\t */\n\t Object.defineProperty(Tone.WaveShaper.prototype, 'curve', {\n\t get: function () {\n\t return this._shaper.curve;\n\t },\n\t set: function (mapping) {\n\t this._curve = new Float32Array(mapping);\n\t this._shaper.curve = this._curve;\n\t }\n\t });\n\t /**\n\t\t * Specifies what type of oversampling (if any) should be used when \n\t\t * applying the shaping curve. Can either be \"none\", \"2x\" or \"4x\". \n\t\t * @memberOf Tone.WaveShaper#\n\t\t * @type {string}\n\t\t * @name oversample\n\t\t */\n\t Object.defineProperty(Tone.WaveShaper.prototype, 'oversample', {\n\t get: function () {\n\t return this._shaper.oversample;\n\t },\n\t set: function (oversampling) {\n\t if ([\n\t 'none',\n\t '2x',\n\t '4x'\n\t ].indexOf(oversampling) !== -1) {\n\t this._shaper.oversample = oversampling;\n\t } else {\n\t throw new RangeError('Tone.WaveShaper: oversampling must be either \\'none\\', \\'2x\\', or \\'4x\\'');\n\t }\n\t }\n\t });\n\t /**\n\t\t * Clean up.\n\t\t * @returns {Tone.WaveShaper} this\n\t\t */\n\t Tone.WaveShaper.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._shaper.disconnect();\n\t this._shaper = null;\n\t this._curve = null;\n\t return this;\n\t };\n\t return Tone.WaveShaper;\n\t});\n\tModule(function (Tone) {\n\t /**\n\t\t * @class Tone.TimeBase is a flexible encoding of time\n\t\t * which can be evaluated to and from a string.\n\t\t * Parsing code modified from https://code.google.com/p/tapdigit/\n\t\t * Copyright 2011 2012 Ariya Hidayat, New BSD License\n\t\t * @extends {Tone}\n\t\t * @param {Time} val The time value as a number or string\n\t\t * @param {String=} units Unit values\n\t\t * @example\n\t\t * Tone.TimeBase(4, \"n\")\n\t\t * Tone.TimeBase(2, \"t\")\n\t\t * Tone.TimeBase(\"2t\").add(\"1m\")\n\t\t * Tone.TimeBase(\"2t + 1m\");\n\t\t */\n\t Tone.TimeBase = function (val, units) {\n\t //allows it to be constructed with or without 'new'\n\t if (this instanceof Tone.TimeBase) {\n\t /**\n\t\t\t\t * Any expressions parsed from the Time\n\t\t\t\t * @type {Array}\n\t\t\t\t * @private\n\t\t\t\t */\n\t this._expr = this._noOp;\n\t if (val instanceof Tone.TimeBase) {\n\t this.copy(val);\n\t } else if (!this.isUndef(units) || this.isNumber(val)) {\n\t //default units\n\t units = this.defaultArg(units, this._defaultUnits);\n\t var method = this._primaryExpressions[units].method;\n\t this._expr = method.bind(this, val);\n\t } else if (this.isString(val)) {\n\t this.set(val);\n\t } else if (this.isUndef(val)) {\n\t //default expression\n\t this._expr = this._defaultExpr();\n\t }\n\t } else {\n\t return new Tone.TimeBase(val, units);\n\t }\n\t };\n\t Tone.extend(Tone.TimeBase);\n\t /**\n\t\t * Repalce the current time value with the value\n\t\t * given by the expression string.\n\t\t * @param {String} exprString\n\t\t * @return {Tone.TimeBase} this\n\t\t */\n\t Tone.TimeBase.prototype.set = function (exprString) {\n\t this._expr = this._parseExprString(exprString);\n\t return this;\n\t };\n\t /**\n\t\t * Return a clone of the TimeBase object.\n\t\t * @return {Tone.TimeBase} The new cloned Tone.TimeBase\n\t\t */\n\t Tone.TimeBase.prototype.clone = function () {\n\t var instance = new this.constructor();\n\t instance.copy(this);\n\t return instance;\n\t };\n\t /**\n\t\t * Copies the value of time to this Time\n\t\t * @param {Tone.TimeBase} time\n\t\t * @return {TimeBase}\n\t\t */\n\t Tone.TimeBase.prototype.copy = function (time) {\n\t var val = time._expr();\n\t return this.set(val);\n\t };\n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tABSTRACT SYNTAX TREE PARSER\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * All the primary expressions.\n\t\t * @private\n\t\t * @type {Object}\n\t\t */\n\t Tone.TimeBase.prototype._primaryExpressions = {\n\t 'n': {\n\t regexp: /^(\\d+)n/i,\n\t method: function (value) {\n\t value = parseInt(value);\n\t if (value === 1) {\n\t return this._beatsToUnits(this._timeSignature());\n\t } else {\n\t return this._beatsToUnits(4 / value);\n\t }\n\t }\n\t },\n\t 't': {\n\t regexp: /^(\\d+)t/i,\n\t method: function (value) {\n\t value = parseInt(value);\n\t return this._beatsToUnits(8 / (parseInt(value) * 3));\n\t }\n\t },\n\t 'm': {\n\t regexp: /^(\\d+)m/i,\n\t method: function (value) {\n\t return this._beatsToUnits(parseInt(value) * this._timeSignature());\n\t }\n\t },\n\t 'i': {\n\t regexp: /^(\\d+)i/i,\n\t method: function (value) {\n\t return this._ticksToUnits(parseInt(value));\n\t }\n\t },\n\t 'hz': {\n\t regexp: /^(\\d+(?:\\.\\d+)?)hz/i,\n\t method: function (value) {\n\t return this._frequencyToUnits(parseFloat(value));\n\t }\n\t },\n\t 'tr': {\n\t regexp: /^(\\d+(?:\\.\\d+)?):(\\d+(?:\\.\\d+)?):?(\\d+(?:\\.\\d+)?)?/,\n\t method: function (m, q, s) {\n\t var total = 0;\n\t if (m && m !== '0') {\n\t total += this._beatsToUnits(this._timeSignature() * parseFloat(m));\n\t }\n\t if (q && q !== '0') {\n\t total += this._beatsToUnits(parseFloat(q));\n\t }\n\t if (s && s !== '0') {\n\t total += this._beatsToUnits(parseFloat(s) / 4);\n\t }\n\t return total;\n\t }\n\t },\n\t 's': {\n\t regexp: /^(\\d+(?:\\.\\d+)?s)/,\n\t method: function (value) {\n\t return this._secondsToUnits(parseFloat(value));\n\t }\n\t },\n\t 'samples': {\n\t regexp: /^(\\d+)samples/,\n\t method: function (value) {\n\t return parseInt(value) / this.context.sampleRate;\n\t }\n\t },\n\t 'default': {\n\t regexp: /^(\\d+(?:\\.\\d+)?)/,\n\t method: function (value) {\n\t return this._primaryExpressions[this._defaultUnits].method.call(this, value);\n\t }\n\t }\n\t };\n\t /**\n\t\t * All the binary expressions that TimeBase can accept.\n\t\t * @private\n\t\t * @type {Object}\n\t\t */\n\t Tone.TimeBase.prototype._binaryExpressions = {\n\t '+': {\n\t regexp: /^\\+/,\n\t precedence: 2,\n\t method: function (lh, rh) {\n\t return lh() + rh();\n\t }\n\t },\n\t '-': {\n\t regexp: /^\\-/,\n\t precedence: 2,\n\t method: function (lh, rh) {\n\t return lh() - rh();\n\t }\n\t },\n\t '*': {\n\t regexp: /^\\*/,\n\t precedence: 1,\n\t method: function (lh, rh) {\n\t return lh() * rh();\n\t }\n\t },\n\t '/': {\n\t regexp: /^\\//,\n\t precedence: 1,\n\t method: function (lh, rh) {\n\t return lh() / rh();\n\t }\n\t }\n\t };\n\t /**\n\t\t * All the unary expressions.\n\t\t * @private\n\t\t * @type {Object}\n\t\t */\n\t Tone.TimeBase.prototype._unaryExpressions = {\n\t 'neg': {\n\t regexp: /^\\-/,\n\t method: function (lh) {\n\t return -lh();\n\t }\n\t }\n\t };\n\t /**\n\t\t * Syntactic glue which holds expressions together\n\t\t * @private\n\t\t * @type {Object}\n\t\t */\n\t Tone.TimeBase.prototype._syntaxGlue = {\n\t '(': { regexp: /^\\(/ },\n\t ')': { regexp: /^\\)/ }\n\t };\n\t /**\n\t\t * tokenize the expression based on the Expressions object\n\t\t * @param {string} expr \n\t\t * @return {Object} returns two methods on the tokenized list, next and peek\n\t\t * @private\n\t\t */\n\t Tone.TimeBase.prototype._tokenize = function (expr) {\n\t var position = -1;\n\t var tokens = [];\n\t while (expr.length > 0) {\n\t expr = expr.trim();\n\t var token = getNextToken(expr, this);\n\t tokens.push(token);\n\t expr = expr.substr(token.value.length);\n\t }\n\t function getNextToken(expr, context) {\n\t var expressions = [\n\t '_binaryExpressions',\n\t '_unaryExpressions',\n\t '_primaryExpressions',\n\t '_syntaxGlue'\n\t ];\n\t for (var i = 0; i < expressions.length; i++) {\n\t var group = context[expressions[i]];\n\t for (var opName in group) {\n\t var op = group[opName];\n\t var reg = op.regexp;\n\t var match = expr.match(reg);\n\t if (match !== null) {\n\t return {\n\t method: op.method,\n\t precedence: op.precedence,\n\t regexp: op.regexp,\n\t value: match[0]\n\t };\n\t }\n\t }\n\t }\n\t throw new SyntaxError('Tone.TimeBase: Unexpected token ' + expr);\n\t }\n\t return {\n\t next: function () {\n\t return tokens[++position];\n\t },\n\t peek: function () {\n\t return tokens[position + 1];\n\t }\n\t };\n\t };\n\t /**\n\t\t * Given a token, find the value within the groupName\n\t\t * @param {Object} token\n\t\t * @param {String} groupName\n\t\t * @param {Number} precedence\n\t\t * @private\n\t\t */\n\t Tone.TimeBase.prototype._matchGroup = function (token, group, prec) {\n\t var ret = false;\n\t if (!this.isUndef(token)) {\n\t for (var opName in group) {\n\t var op = group[opName];\n\t if (op.regexp.test(token.value)) {\n\t if (!this.isUndef(prec)) {\n\t if (op.precedence === prec) {\n\t return op;\n\t }\n\t } else {\n\t return op;\n\t }\n\t }\n\t }\n\t }\n\t return ret;\n\t };\n\t /**\n\t\t * Match a binary expression given the token and the precedence\n\t\t * @param {Lexer} lexer\n\t\t * @param {Number} precedence\n\t\t * @private\n\t\t */\n\t Tone.TimeBase.prototype._parseBinary = function (lexer, precedence) {\n\t if (this.isUndef(precedence)) {\n\t precedence = 2;\n\t }\n\t var expr;\n\t if (precedence < 0) {\n\t expr = this._parseUnary(lexer);\n\t } else {\n\t expr = this._parseBinary(lexer, precedence - 1);\n\t }\n\t var token = lexer.peek();\n\t while (token && this._matchGroup(token, this._binaryExpressions, precedence)) {\n\t token = lexer.next();\n\t expr = token.method.bind(this, expr, this._parseBinary(lexer, precedence - 1));\n\t token = lexer.peek();\n\t }\n\t return expr;\n\t };\n\t /**\n\t\t * Match a unary expression.\n\t\t * @param {Lexer} lexer\n\t\t * @private\n\t\t */\n\t Tone.TimeBase.prototype._parseUnary = function (lexer) {\n\t var token, expr;\n\t token = lexer.peek();\n\t var op = this._matchGroup(token, this._unaryExpressions);\n\t if (op) {\n\t token = lexer.next();\n\t expr = this._parseUnary(lexer);\n\t return op.method.bind(this, expr);\n\t }\n\t return this._parsePrimary(lexer);\n\t };\n\t /**\n\t\t * Match a primary expression (a value).\n\t\t * @param {Lexer} lexer\n\t\t * @private\n\t\t */\n\t Tone.TimeBase.prototype._parsePrimary = function (lexer) {\n\t var token, expr;\n\t token = lexer.peek();\n\t if (this.isUndef(token)) {\n\t throw new SyntaxError('Tone.TimeBase: Unexpected end of expression');\n\t }\n\t if (this._matchGroup(token, this._primaryExpressions)) {\n\t token = lexer.next();\n\t var matching = token.value.match(token.regexp);\n\t return token.method.bind(this, matching[1], matching[2], matching[3]);\n\t }\n\t if (token && token.value === '(') {\n\t lexer.next();\n\t expr = this._parseBinary(lexer);\n\t token = lexer.next();\n\t if (!(token && token.value === ')')) {\n\t throw new SyntaxError('Expected )');\n\t }\n\t return expr;\n\t }\n\t throw new SyntaxError('Tone.TimeBase: Cannot process token ' + token.value);\n\t };\n\t /**\n\t\t * Recursively parse the string expression into a syntax tree.\n\t\t * @param {string} expr \n\t\t * @return {Function} the bound method to be evaluated later\n\t\t * @private\n\t\t */\n\t Tone.TimeBase.prototype._parseExprString = function (exprString) {\n\t if (!this.isString(exprString)) {\n\t exprString = exprString.toString();\n\t }\n\t var lexer = this._tokenize(exprString);\n\t var tree = this._parseBinary(lexer);\n\t return tree;\n\t };\n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tDEFAULTS\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * The initial expression value\n\t\t * @return {Number} The initial value 0\n\t\t * @private\n\t\t */\n\t Tone.TimeBase.prototype._noOp = function () {\n\t return 0;\n\t };\n\t /**\n\t\t * The default expression value if no arguments are given\n\t\t * @private\n\t\t */\n\t Tone.TimeBase.prototype._defaultExpr = function () {\n\t return this._noOp;\n\t };\n\t /**\n\t\t * The default units if none are given.\n\t\t * @private\n\t\t */\n\t Tone.TimeBase.prototype._defaultUnits = 's';\n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tUNIT CONVERSIONS\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * Returns the value of a frequency in the current units\n\t\t * @param {Frequency} freq\n\t\t * @return {Number}\n\t\t * @private\n\t\t */\n\t Tone.TimeBase.prototype._frequencyToUnits = function (freq) {\n\t return 1 / freq;\n\t };\n\t /**\n\t\t * Return the value of the beats in the current units\n\t\t * @param {Number} beats\n\t\t * @return {Number}\n\t\t * @private\n\t\t */\n\t Tone.TimeBase.prototype._beatsToUnits = function (beats) {\n\t return 60 / Tone.Transport.bpm.value * beats;\n\t };\n\t /**\n\t\t * Returns the value of a second in the current units\n\t\t * @param {Seconds} seconds\n\t\t * @return {Number}\n\t\t * @private\n\t\t */\n\t Tone.TimeBase.prototype._secondsToUnits = function (seconds) {\n\t return seconds;\n\t };\n\t /**\n\t\t * Returns the value of a tick in the current time units\n\t\t * @param {Ticks} ticks\n\t\t * @return {Number}\n\t\t * @private\n\t\t */\n\t Tone.TimeBase.prototype._ticksToUnits = function (ticks) {\n\t return ticks * (this._beatsToUnits(1) / Tone.Transport.PPQ);\n\t };\n\t /**\n\t\t * Return the time signature.\n\t\t * @return {Number}\n\t\t * @private\n\t\t */\n\t Tone.TimeBase.prototype._timeSignature = function () {\n\t return Tone.Transport.timeSignature;\n\t };\n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tEXPRESSIONS\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * Push an expression onto the expression list\n\t\t * @param {Time} val\n\t\t * @param {String} type\n\t\t * @param {String} units\n\t\t * @return {Tone.TimeBase} \n\t\t * @private\n\t\t */\n\t Tone.TimeBase.prototype._pushExpr = function (val, name, units) {\n\t //create the expression\n\t if (!(val instanceof Tone.TimeBase)) {\n\t val = new this.constructor(val, units);\n\t }\n\t this._expr = this._binaryExpressions[name].method.bind(this, this._expr, val._expr);\n\t return this;\n\t };\n\t /**\n\t\t * Add to the current value.\n\t\t * @param {Time} val The value to add\n\t\t * @param {String=} units Optional units to use with the value.\n\t\t * @return {Tone.TimeBase} this\n\t\t * @example\n\t\t * Tone.TimeBase(\"2m\").add(\"1m\"); //\"3m\"\n\t\t */\n\t Tone.TimeBase.prototype.add = function (val, units) {\n\t return this._pushExpr(val, '+', units);\n\t };\n\t /**\n\t\t * Subtract the value from the current time.\n\t\t * @param {Time} val The value to subtract\n\t\t * @param {String=} units Optional units to use with the value.\n\t\t * @return {Tone.TimeBase} this\n\t\t * @example\n\t\t * Tone.TimeBase(\"2m\").sub(\"1m\"); //\"1m\"\n\t\t */\n\t Tone.TimeBase.prototype.sub = function (val, units) {\n\t return this._pushExpr(val, '-', units);\n\t };\n\t /**\n\t\t * Multiply the current value by the given time.\n\t\t * @param {Time} val The value to multiply\n\t\t * @param {String=} units Optional units to use with the value.\n\t\t * @return {Tone.TimeBase} this\n\t\t * @example\n\t\t * Tone.TimeBase(\"2m\").mult(\"2\"); //\"4m\"\n\t\t */\n\t Tone.TimeBase.prototype.mult = function (val, units) {\n\t return this._pushExpr(val, '*', units);\n\t };\n\t /**\n\t\t * Divide the current value by the given time.\n\t\t * @param {Time} val The value to divide by\n\t\t * @param {String=} units Optional units to use with the value.\n\t\t * @return {Tone.TimeBase} this\n\t\t * @example\n\t\t * Tone.TimeBase(\"2m\").div(2); //\"1m\"\n\t\t */\n\t Tone.TimeBase.prototype.div = function (val, units) {\n\t return this._pushExpr(val, '/', units);\n\t };\n\t /**\n\t\t * Evaluate the time value. Returns the time\n\t\t * in seconds.\n\t\t * @return {Seconds} \n\t\t */\n\t Tone.TimeBase.prototype.valueOf = function () {\n\t return this._expr();\n\t };\n\t /**\n\t\t * Clean up\n\t\t * @return {Tone.TimeBase} this\n\t\t */\n\t Tone.TimeBase.prototype.dispose = function () {\n\t this._expr = null;\n\t };\n\t return Tone.TimeBase;\n\t});\n\tModule(function (Tone) {\n\t /**\n\t\t * @class Tone.Time is a primitive type for encoding Time values. \n\t\t * Eventually all time values are evaluated to seconds\n\t\t * using the `eval` method. Tone.Time can be constructed\n\t\t * with or without the `new` keyword. Tone.Time can be passed\n\t\t * into the parameter of any method which takes time as an argument. \n\t\t * @constructor\n\t\t * @extends {Tone.TimeBase}\n\t\t * @param {String|Number} val The time value.\n\t\t * @param {String=} units The units of the value.\n\t\t * @example\n\t\t * var t = Tone.Time(\"4n\");//encodes a quarter note\n\t\t * t.mult(4); // multiply that value by 4\n\t\t * t.toNotation(); //returns \"1m\"\n\t\t */\n\t Tone.Time = function (val, units) {\n\t if (this instanceof Tone.Time) {\n\t /**\n\t\t\t\t * If the current clock time should\n\t\t\t\t * be added to the output\n\t\t\t\t * @type {Boolean}\n\t\t\t\t * @private\n\t\t\t\t */\n\t this._plusNow = false;\n\t Tone.TimeBase.call(this, val, units);\n\t } else {\n\t return new Tone.Time(val, units);\n\t }\n\t };\n\t Tone.extend(Tone.Time, Tone.TimeBase);\n\t //clone the expressions so that \n\t //we can add more without modifying the original\n\t Tone.Time.prototype._unaryExpressions = Object.create(Tone.TimeBase.prototype._unaryExpressions);\n\t /*\n\t\t * Adds an additional unary expression\n\t\t * which quantizes values to the next subdivision\n\t\t * @type {Object}\n\t\t * @private\n\t\t */\n\t Tone.Time.prototype._unaryExpressions.quantize = {\n\t regexp: /^@/,\n\t method: function (rh) {\n\t return Tone.Transport.nextSubdivision(rh());\n\t }\n\t };\n\t /*\n\t\t * Adds an additional unary expression\n\t\t * which adds the current clock time.\n\t\t * @type {Object}\n\t\t * @private\n\t\t */\n\t Tone.Time.prototype._unaryExpressions.now = {\n\t regexp: /^\\+/,\n\t method: function (lh) {\n\t this._plusNow = true;\n\t return lh();\n\t }\n\t };\n\t /**\n\t\t * Quantize the time by the given subdivision. Optionally add a\n\t\t * percentage which will move the time value towards the ideal\n\t\t * quantized value by that percentage. \n\t\t * @param {Number|Time} val The subdivision to quantize to\n\t\t * @param {NormalRange} [percent=1] Move the time value\n\t\t * towards the quantized value by\n\t\t * a percentage.\n\t\t * @return {Tone.Time} this\n\t\t * @example\n\t\t * Tone.Time(21).quantize(2) //returns 22\n\t\t * Tone.Time(0.6).quantize(\"4n\", 0.5) //returns 0.55\n\t\t */\n\t Tone.Time.prototype.quantize = function (subdiv, percent) {\n\t percent = this.defaultArg(percent, 1);\n\t this._expr = function (expr, subdivision, percent) {\n\t expr = expr();\n\t subdivision = subdivision.toSeconds();\n\t var multiple = Math.round(expr / subdivision);\n\t var ideal = multiple * subdivision;\n\t var diff = ideal - expr;\n\t return expr + diff * percent;\n\t }.bind(this, this._expr, new this.constructor(subdiv), percent);\n\t return this;\n\t };\n\t /**\n\t\t * Adds the clock time to the time expression at the \n\t\t * moment of evaluation. \n\t\t * @return {Tone.Time} this\n\t\t */\n\t Tone.Time.prototype.addNow = function () {\n\t this._plusNow = true;\n\t return this;\n\t };\n\t /**\n\t\t * @override\n\t\t * Override the default value return when no arguments are passed in.\n\t\t * The default value is 'now'\n\t\t * @private\n\t\t */\n\t Tone.Time.prototype._defaultExpr = function () {\n\t this._plusNow = true;\n\t return this._noOp;\n\t };\n\t /**\n\t\t * Copies the value of time to this Time\n\t\t * @param {Tone.Time} time\n\t\t * @return {Time}\n\t\t */\n\t Tone.Time.prototype.copy = function (time) {\n\t Tone.TimeBase.prototype.copy.call(this, time);\n\t this._plusNow = time._plusNow;\n\t return this;\n\t };\n\t //CONVERSIONS//////////////////////////////////////////////////////////////\n\t /**\n\t\t * Convert a Time to Notation. Values will be thresholded to the nearest 128th note. \n\t\t * @return {Notation} \n\t\t * @example\n\t\t * //if the Transport is at 120bpm:\n\t\t * Tone.Time(2).toNotation();//returns \"1m\"\n\t\t */\n\t Tone.Time.prototype.toNotation = function () {\n\t var time = this.toSeconds();\n\t var testNotations = [\n\t '1m',\n\t '2n',\n\t '4n',\n\t '8n',\n\t '16n',\n\t '32n',\n\t '64n',\n\t '128n'\n\t ];\n\t var retNotation = this._toNotationHelper(time, testNotations);\n\t //try the same thing but with tripelets\n\t var testTripletNotations = [\n\t '1m',\n\t '2n',\n\t '2t',\n\t '4n',\n\t '4t',\n\t '8n',\n\t '8t',\n\t '16n',\n\t '16t',\n\t '32n',\n\t '32t',\n\t '64n',\n\t '64t',\n\t '128n'\n\t ];\n\t var retTripletNotation = this._toNotationHelper(time, testTripletNotations);\n\t //choose the simpler expression of the two\n\t if (retTripletNotation.split('+').length < retNotation.split('+').length) {\n\t return retTripletNotation;\n\t } else {\n\t return retNotation;\n\t }\n\t };\n\t /**\n\t\t * Helper method for Tone.toNotation\n\t\t * @param {Number} units \n\t\t * @param {Array} testNotations\n\t\t * @return {String}\n\t\t * @private\n\t\t */\n\t Tone.Time.prototype._toNotationHelper = function (units, testNotations) {\n\t //the threshold is the last value in the array\n\t var threshold = this._notationToUnits(testNotations[testNotations.length - 1]);\n\t var retNotation = '';\n\t for (var i = 0; i < testNotations.length; i++) {\n\t var notationTime = this._notationToUnits(testNotations[i]);\n\t //account for floating point errors (i.e. round up if the value is 0.999999)\n\t var multiple = units / notationTime;\n\t var floatingPointError = 0.000001;\n\t if (1 - multiple % 1 < floatingPointError) {\n\t multiple += floatingPointError;\n\t }\n\t multiple = Math.floor(multiple);\n\t if (multiple > 0) {\n\t if (multiple === 1) {\n\t retNotation += testNotations[i];\n\t } else {\n\t retNotation += multiple.toString() + '*' + testNotations[i];\n\t }\n\t units -= multiple * notationTime;\n\t if (units < threshold) {\n\t break;\n\t } else {\n\t retNotation += ' + ';\n\t }\n\t }\n\t }\n\t if (retNotation === '') {\n\t retNotation = '0';\n\t }\n\t return retNotation;\n\t };\n\t /**\n\t\t * Convert a notation value to the current units\n\t\t * @param {Notation} notation \n\t\t * @return {Number} \n\t\t * @private\n\t\t */\n\t Tone.Time.prototype._notationToUnits = function (notation) {\n\t var primaryExprs = this._primaryExpressions;\n\t var notationExprs = [\n\t primaryExprs.n,\n\t primaryExprs.t,\n\t primaryExprs.m\n\t ];\n\t for (var i = 0; i < notationExprs.length; i++) {\n\t var expr = notationExprs[i];\n\t var match = notation.match(expr.regexp);\n\t if (match) {\n\t return expr.method.call(this, match[1]);\n\t }\n\t }\n\t };\n\t /**\n\t\t * Return the time encoded as Bars:Beats:Sixteenths.\n\t\t * @return {BarsBeatsSixteenths}\n\t\t */\n\t Tone.Time.prototype.toBarsBeatsSixteenths = function () {\n\t var quarterTime = this._beatsToUnits(1);\n\t var quarters = this.toSeconds() / quarterTime;\n\t var measures = Math.floor(quarters / this._timeSignature());\n\t var sixteenths = quarters % 1 * 4;\n\t quarters = Math.floor(quarters) % this._timeSignature();\n\t sixteenths = sixteenths.toString();\n\t if (sixteenths.length > 3) {\n\t sixteenths = parseFloat(sixteenths).toFixed(3);\n\t }\n\t var progress = [\n\t measures,\n\t quarters,\n\t sixteenths\n\t ];\n\t return progress.join(':');\n\t };\n\t /**\n\t\t * Return the time in ticks.\n\t\t * @return {Ticks}\n\t\t */\n\t Tone.Time.prototype.toTicks = function () {\n\t var quarterTime = this._beatsToUnits(1);\n\t var quarters = this.valueOf() / quarterTime;\n\t return Math.floor(quarters * Tone.Transport.PPQ);\n\t };\n\t /**\n\t\t * Return the time in samples\n\t\t * @return {Samples} \n\t\t */\n\t Tone.Time.prototype.toSamples = function () {\n\t return this.toSeconds() * this.context.sampleRate;\n\t };\n\t /**\n\t\t * Return the time as a frequency value\n\t\t * @return {Frequency} \n\t\t * @example\n\t\t * Tone.Time(2).toFrequency(); //0.5\n\t\t */\n\t Tone.Time.prototype.toFrequency = function () {\n\t return 1 / this.toSeconds();\n\t };\n\t /**\n\t\t * Return the time in seconds.\n\t\t * @return {Seconds} \n\t\t */\n\t Tone.Time.prototype.toSeconds = function () {\n\t return this.valueOf();\n\t };\n\t /**\n\t\t * Return the time in milliseconds.\n\t\t * @return {Milliseconds} \n\t\t */\n\t Tone.Time.prototype.toMilliseconds = function () {\n\t return this.toSeconds() * 1000;\n\t };\n\t /**\n\t\t * Return the time in seconds.\n\t\t * @return {Seconds} \n\t\t */\n\t Tone.Time.prototype.valueOf = function () {\n\t var val = this._expr();\n\t return val + (this._plusNow ? this.now() : 0);\n\t };\n\t return Tone.Time;\n\t});\n\tModule(function (Tone) {\n\t /**\n\t\t * @class Tone.Frequency is a primitive type for encoding Frequency values. \n\t\t * Eventually all time values are evaluated to hertz\n\t\t * using the `eval` method. \n\t\t * @constructor\n\t\t * @extends {Tone.TimeBase}\n\t\t * @param {String|Number} val The time value.\n\t\t * @param {String=} units The units of the value.\n\t\t * @example\n\t\t * Tone.Frequency(\"C3\") // 261\n\t\t * Tone.Frequency(38, \"midi\") //\n\t\t * Tone.Frequency(\"C3\").transpose(4);\n\t\t */\n\t Tone.Frequency = function (val, units) {\n\t if (this instanceof Tone.Frequency) {\n\t Tone.TimeBase.call(this, val, units);\n\t } else {\n\t return new Tone.Frequency(val, units);\n\t }\n\t };\n\t Tone.extend(Tone.Frequency, Tone.TimeBase);\n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tAUGMENT BASE EXPRESSIONS\n\t ///////////////////////////////////////////////////////////////////////////\n\t //clone the expressions so that \n\t //we can add more without modifying the original\n\t Tone.Frequency.prototype._primaryExpressions = Object.create(Tone.TimeBase.prototype._primaryExpressions);\n\t /*\n\t\t * midi type primary expression\n\t\t * @type {Object}\n\t\t * @private\n\t\t */\n\t Tone.Frequency.prototype._primaryExpressions.midi = {\n\t regexp: /^(\\d+(?:\\.\\d+)?midi)/,\n\t method: function (value) {\n\t return this.midiToFrequency(value);\n\t }\n\t };\n\t /*\n\t\t * note type primary expression\n\t\t * @type {Object}\n\t\t * @private\n\t\t */\n\t Tone.Frequency.prototype._primaryExpressions.note = {\n\t regexp: /^([a-g]{1}(?:b|#|x|bb)?)(-?[0-9]+)/i,\n\t method: function (pitch, octave) {\n\t var index = noteToScaleIndex[pitch.toLowerCase()];\n\t var noteNumber = index + (parseInt(octave) + 1) * 12;\n\t return this.midiToFrequency(noteNumber);\n\t }\n\t };\n\t /*\n\t\t * BeatsBarsSixteenths type primary expression\n\t\t * @type {Object}\n\t\t * @private\n\t\t */\n\t Tone.Frequency.prototype._primaryExpressions.tr = {\n\t regexp: /^(\\d+(?:\\.\\d+)?):(\\d+(?:\\.\\d+)?):?(\\d+(?:\\.\\d+)?)?/,\n\t method: function (m, q, s) {\n\t var total = 1;\n\t if (m && m !== '0') {\n\t total *= this._beatsToUnits(this._timeSignature() * parseFloat(m));\n\t }\n\t if (q && q !== '0') {\n\t total *= this._beatsToUnits(parseFloat(q));\n\t }\n\t if (s && s !== '0') {\n\t total *= this._beatsToUnits(parseFloat(s) / 4);\n\t }\n\t return total;\n\t }\n\t };\n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tEXPRESSIONS\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * Transposes the frequency by the given number of semitones.\n\t\t * @param {Interval} interval\n\t\t * @return {Tone.Frequency} this\n\t\t * @example\n\t\t * Tone.Frequency(\"A4\").transpose(3); //\"C5\"\n\t\t */\n\t Tone.Frequency.prototype.transpose = function (interval) {\n\t this._expr = function (expr, interval) {\n\t var val = expr();\n\t return val * this.intervalToFrequencyRatio(interval);\n\t }.bind(this, this._expr, interval);\n\t return this;\n\t };\n\t /**\n\t\t * Takes an array of semitone intervals and returns\n\t\t * an array of frequencies transposed by those intervals.\n\t\t * @param {Array} intervals\n\t\t * @return {Tone.Frequency} this\n\t\t * @example\n\t\t * Tone.Frequency(\"A4\").harmonize([0, 3, 7]); //[\"A4\", \"C5\", \"E5\"]\n\t\t */\n\t Tone.Frequency.prototype.harmonize = function (intervals) {\n\t this._expr = function (expr, intervals) {\n\t var val = expr();\n\t var ret = [];\n\t for (var i = 0; i < intervals.length; i++) {\n\t ret[i] = val * this.intervalToFrequencyRatio(intervals[i]);\n\t }\n\t return ret;\n\t }.bind(this, this._expr, intervals);\n\t return this;\n\t };\n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tUNIT CONVERSIONS\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * Return the value of the frequency as a MIDI note\n\t\t * @return {MIDI}\n\t\t * @example\n\t\t * Tone.Frequency(\"C4\").toMidi(); //60\n\t\t */\n\t Tone.Frequency.prototype.toMidi = function () {\n\t return this.frequencyToMidi(this.valueOf());\n\t };\n\t /**\n\t\t * Return the value of the frequency in Scientific Pitch Notation\n\t\t * @return {Note}\n\t\t * @example\n\t\t * Tone.Frequency(69, \"midi\").toNote(); //\"A4\"\n\t\t */\n\t Tone.Frequency.prototype.toNote = function () {\n\t var freq = this.valueOf();\n\t var log = Math.log(freq / Tone.Frequency.A4) / Math.LN2;\n\t var noteNumber = Math.round(12 * log) + 57;\n\t var octave = Math.floor(noteNumber / 12);\n\t if (octave < 0) {\n\t noteNumber += -12 * octave;\n\t }\n\t var noteName = scaleIndexToNote[noteNumber % 12];\n\t return noteName + octave.toString();\n\t };\n\t /**\n\t\t * Return the duration of one cycle in seconds.\n\t\t * @return {Seconds}\n\t\t */\n\t Tone.Frequency.prototype.toSeconds = function () {\n\t return 1 / this.valueOf();\n\t };\n\t /**\n\t\t * Return the value in Hertz\n\t\t * @return {Frequency}\n\t\t */\n\t Tone.Frequency.prototype.toFrequency = function () {\n\t return this.valueOf();\n\t };\n\t /**\n\t\t * Return the duration of one cycle in ticks\n\t\t * @return {Ticks}\n\t\t */\n\t Tone.Frequency.prototype.toTicks = function () {\n\t var quarterTime = this._beatsToUnits(1);\n\t var quarters = this.valueOf() / quarterTime;\n\t return Math.floor(quarters * Tone.Transport.PPQ);\n\t };\n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tUNIT CONVERSIONS HELPERS\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * Returns the value of a frequency in the current units\n\t\t * @param {Frequency} freq\n\t\t * @return {Number}\n\t\t * @private\n\t\t */\n\t Tone.Frequency.prototype._frequencyToUnits = function (freq) {\n\t return freq;\n\t };\n\t /**\n\t\t * Returns the value of a tick in the current time units\n\t\t * @param {Ticks} ticks\n\t\t * @return {Number}\n\t\t * @private\n\t\t */\n\t Tone.Frequency.prototype._ticksToUnits = function (ticks) {\n\t return 1 / (ticks * 60 / (Tone.Transport.bpm.value * Tone.Transport.PPQ));\n\t };\n\t /**\n\t\t * Return the value of the beats in the current units\n\t\t * @param {Number} beats\n\t\t * @return {Number}\n\t\t * @private\n\t\t */\n\t Tone.Frequency.prototype._beatsToUnits = function (beats) {\n\t return 1 / Tone.TimeBase.prototype._beatsToUnits.call(this, beats);\n\t };\n\t /**\n\t\t * Returns the value of a second in the current units\n\t\t * @param {Seconds} seconds\n\t\t * @return {Number}\n\t\t * @private\n\t\t */\n\t Tone.Frequency.prototype._secondsToUnits = function (seconds) {\n\t return 1 / seconds;\n\t };\n\t /**\n\t\t * The default units if none are given.\n\t\t * @private\n\t\t */\n\t Tone.Frequency.prototype._defaultUnits = 'hz';\n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tFREQUENCY CONVERSIONS\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * Note to scale index\n\t\t * @type {Object}\n\t\t */\n\t var noteToScaleIndex = {\n\t 'cbb': -2,\n\t 'cb': -1,\n\t 'c': 0,\n\t 'c#': 1,\n\t 'cx': 2,\n\t 'dbb': 0,\n\t 'db': 1,\n\t 'd': 2,\n\t 'd#': 3,\n\t 'dx': 4,\n\t 'ebb': 2,\n\t 'eb': 3,\n\t 'e': 4,\n\t 'e#': 5,\n\t 'ex': 6,\n\t 'fbb': 3,\n\t 'fb': 4,\n\t 'f': 5,\n\t 'f#': 6,\n\t 'fx': 7,\n\t 'gbb': 5,\n\t 'gb': 6,\n\t 'g': 7,\n\t 'g#': 8,\n\t 'gx': 9,\n\t 'abb': 7,\n\t 'ab': 8,\n\t 'a': 9,\n\t 'a#': 10,\n\t 'ax': 11,\n\t 'bbb': 9,\n\t 'bb': 10,\n\t 'b': 11,\n\t 'b#': 12,\n\t 'bx': 13\n\t };\n\t /**\n\t\t * scale index to note (sharps)\n\t\t * @type {Array}\n\t\t */\n\t var scaleIndexToNote = [\n\t 'C',\n\t 'C#',\n\t 'D',\n\t 'D#',\n\t 'E',\n\t 'F',\n\t 'F#',\n\t 'G',\n\t 'G#',\n\t 'A',\n\t 'A#',\n\t 'B'\n\t ];\n\t /**\n\t\t * The [concert pitch](https://en.wikipedia.org/wiki/Concert_pitch)\n\t\t * A4's values in Hertz. \n\t\t * @type {Frequency}\n\t\t * @static\n\t\t */\n\t Tone.Frequency.A4 = 440;\n\t /**\n\t\t * Convert a MIDI note to frequency value. \n\t\t * @param {MIDI} midi The midi number to convert.\n\t\t * @return {Frequency} the corresponding frequency value\n\t\t * @example\n\t\t * tone.midiToFrequency(69); // returns 440\n\t\t */\n\t Tone.Frequency.prototype.midiToFrequency = function (midi) {\n\t return Tone.Frequency.A4 * Math.pow(2, (midi - 69) / 12);\n\t };\n\t /**\n\t\t * Convert a frequency value to a MIDI note.\n\t\t * @param {Frequency} frequency The value to frequency value to convert.\n\t\t * @returns {MIDI}\n\t\t * @example\n\t\t * tone.midiToFrequency(440); // returns 69\n\t\t */\n\t Tone.Frequency.prototype.frequencyToMidi = function (frequency) {\n\t return 69 + 12 * Math.log(frequency / Tone.Frequency.A4) / Math.LN2;\n\t };\n\t return Tone.Frequency;\n\t});\n\tModule(function (Tone) {\n\t /**\n\t\t * @class Tone.TransportTime is a the time along the Transport's\n\t\t * timeline. It is similar to Tone.Time, but instead of evaluating\n\t\t * against the AudioContext's clock, it is evaluated against\n\t\t * the Transport's position. See [TransportTime wiki](https://github.com/Tonejs/Tone.js/wiki/TransportTime).\n\t\t * @constructor\n\t\t * @param {Time} val The time value as a number or string\n\t\t * @param {String=} units Unit values\n\t\t * @extends {Tone.Time}\n\t\t */\n\t Tone.TransportTime = function (val, units) {\n\t if (this instanceof Tone.TransportTime) {\n\t Tone.Time.call(this, val, units);\n\t } else {\n\t return new Tone.TransportTime(val, units);\n\t }\n\t };\n\t Tone.extend(Tone.TransportTime, Tone.Time);\n\t //clone the expressions so that \n\t //we can add more without modifying the original\n\t Tone.TransportTime.prototype._unaryExpressions = Object.create(Tone.Time.prototype._unaryExpressions);\n\t /**\n\t\t * Adds an additional unary expression\n\t\t * which quantizes values to the next subdivision\n\t\t * @type {Object}\n\t\t * @private\n\t\t */\n\t Tone.TransportTime.prototype._unaryExpressions.quantize = {\n\t regexp: /^@/,\n\t method: function (rh) {\n\t var subdivision = this._secondsToTicks(rh());\n\t var multiple = Math.ceil(Tone.Transport.ticks / subdivision);\n\t return this._ticksToUnits(multiple * subdivision);\n\t }\n\t };\n\t /**\n\t\t * Convert seconds into ticks\n\t\t * @param {Seconds} seconds\n\t\t * @return {Ticks}\n\t\t * @private\n\t\t */\n\t Tone.TransportTime.prototype._secondsToTicks = function (seconds) {\n\t var quarterTime = this._beatsToUnits(1);\n\t var quarters = seconds / quarterTime;\n\t return Math.round(quarters * Tone.Transport.PPQ);\n\t };\n\t /**\n\t\t * Evaluate the time expression. Returns values in ticks\n\t\t * @return {Ticks}\n\t\t */\n\t Tone.TransportTime.prototype.valueOf = function () {\n\t var val = this._secondsToTicks(this._expr());\n\t return val + (this._plusNow ? Tone.Transport.ticks : 0);\n\t };\n\t /**\n\t\t * Return the time in ticks.\n\t\t * @return {Ticks}\n\t\t */\n\t Tone.TransportTime.prototype.toTicks = function () {\n\t return this.valueOf();\n\t };\n\t /**\n\t\t * Return the time in seconds.\n\t\t * @return {Seconds}\n\t\t */\n\t Tone.TransportTime.prototype.toSeconds = function () {\n\t var val = this._expr();\n\t return val + (this._plusNow ? Tone.Transport.seconds : 0);\n\t };\n\t /**\n\t\t * Return the time as a frequency value\n\t\t * @return {Frequency} \n\t\t */\n\t Tone.TransportTime.prototype.toFrequency = function () {\n\t return 1 / this.toSeconds();\n\t };\n\t return Tone.TransportTime;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Emitter gives classes which extend it\n\t\t * the ability to listen for and emit events. \n\t\t * Inspiration and reference from Jerome Etienne's [MicroEvent](https://github.com/jeromeetienne/microevent.js).\n\t\t * MIT (c) 2011 Jerome Etienne.\n\t\t * \n\t\t * @extends {Tone}\n\t\t */\n\t Tone.Emitter = function () {\n\t /**\n\t\t\t * Contains all of the events.\n\t\t\t * @private\n\t\t\t * @type {Object}\n\t\t\t */\n\t this._events = {};\n\t };\n\t Tone.extend(Tone.Emitter);\n\t /**\n\t\t * Bind a callback to a specific event.\n\t\t * @param {String} event The name of the event to listen for.\n\t\t * @param {Function} callback The callback to invoke when the\n\t\t * event is emitted\n\t\t * @return {Tone.Emitter} this\n\t\t */\n\t Tone.Emitter.prototype.on = function (event, callback) {\n\t //split the event\n\t var events = event.split(/\\W+/);\n\t for (var i = 0; i < events.length; i++) {\n\t var eventName = events[i];\n\t if (!this._events.hasOwnProperty(eventName)) {\n\t this._events[eventName] = [];\n\t }\n\t this._events[eventName].push(callback);\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Remove the event listener.\n\t\t * @param {String} event The event to stop listening to.\n\t\t * @param {Function=} callback The callback which was bound to \n\t\t * the event with Tone.Emitter.on.\n\t\t * If no callback is given, all callbacks\n\t\t * events are removed.\n\t\t * @return {Tone.Emitter} this\n\t\t */\n\t Tone.Emitter.prototype.off = function (event, callback) {\n\t var events = event.split(/\\W+/);\n\t for (var ev = 0; ev < events.length; ev++) {\n\t event = events[ev];\n\t if (this._events.hasOwnProperty(event)) {\n\t if (Tone.prototype.isUndef(callback)) {\n\t this._events[event] = [];\n\t } else {\n\t var eventList = this._events[event];\n\t for (var i = 0; i < eventList.length; i++) {\n\t if (eventList[i] === callback) {\n\t eventList.splice(i, 1);\n\t }\n\t }\n\t }\n\t }\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Invoke all of the callbacks bound to the event\n\t\t * with any arguments passed in. \n\t\t * @param {String} event The name of the event.\n\t\t * @param {*...} args The arguments to pass to the functions listening.\n\t\t * @return {Tone.Emitter} this\n\t\t */\n\t Tone.Emitter.prototype.emit = function (event) {\n\t if (this._events) {\n\t var args = Array.apply(null, arguments).slice(1);\n\t if (this._events.hasOwnProperty(event)) {\n\t var eventList = this._events[event];\n\t for (var i = 0, len = eventList.length; i < len; i++) {\n\t eventList[i].apply(this, args);\n\t }\n\t }\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Add Emitter functions (on/off/emit) to the object\n\t\t * @param {Object|Function} object The object or class to extend.\n\t\t */\n\t Tone.Emitter.mixin = function (object) {\n\t var functions = [\n\t 'on',\n\t 'off',\n\t 'emit'\n\t ];\n\t object._events = {};\n\t for (var i = 0; i < functions.length; i++) {\n\t var func = functions[i];\n\t var emitterFunc = Tone.Emitter.prototype[func];\n\t object[func] = emitterFunc;\n\t }\n\t };\n\t /**\n\t\t * Clean up\n\t\t * @return {Tone.Emitter} this\n\t\t */\n\t Tone.Emitter.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._events = null;\n\t return this;\n\t };\n\t return Tone.Emitter;\n\t});\n\tModule(function (Tone) {\n\t /**\n\t\t * shim\n\t\t * @private\n\t\t */\n\t if (!window.hasOwnProperty('AudioContext') && window.hasOwnProperty('webkitAudioContext')) {\n\t window.AudioContext = window.webkitAudioContext;\n\t }\n\t /**\n\t\t * @class Wrapper around the native AudioContext.\n\t\t * @extends {Tone.Emitter}\n\t\t * @param {AudioContext=} context optionally pass in a context\n\t\t */\n\t Tone.Context = function (context) {\n\t Tone.Emitter.call(this);\n\t if (!context) {\n\t context = new window.AudioContext();\n\t }\n\t this._context = context;\n\t // extend all of the methods\n\t for (var prop in this._context) {\n\t this._defineProperty(this._context, prop);\n\t }\n\t ///////////////////////////////////////////////////////////////////////\n\t // WORKER\n\t ///////////////////////////////////////////////////////////////////////\n\t /**\n\t\t\t * The default latency hint\n\t\t\t * @type {String}\n\t\t\t * @private\n\t\t\t */\n\t this._latencyHint = 'interactive';\n\t /**\n\t\t\t * The amount of time events are scheduled\n\t\t\t * into the future\n\t\t\t * @type {Number}\n\t\t\t * @private\n\t\t\t */\n\t this._lookAhead = 0.1;\n\t /**\n\t\t\t * How often the update look runs\n\t\t\t * @type {Number}\n\t\t\t * @private\n\t\t\t */\n\t this._updateInterval = this._lookAhead / 3;\n\t /**\n\t\t\t * A reference to the actual computed update interval\n\t\t\t * @type {Number}\n\t\t\t * @private\n\t\t\t */\n\t this._computedUpdateInterval = 0;\n\t /**\n\t\t\t * The web worker which is used to update Tone.Clock\n\t\t\t * @private\n\t\t\t * @type {WebWorker}\n\t\t\t */\n\t this._worker = this._createWorker();\n\t /**\n\t\t\t * An object containing all of the constants AudioBufferSourceNodes\n\t\t\t * @type {Object}\n\t\t\t * @private\n\t\t\t */\n\t this._constants = {};\n\t };\n\t Tone.extend(Tone.Context, Tone.Emitter);\n\t Tone.Emitter.mixin(Tone.Context);\n\t /**\n\t\t * Define a property on this Tone.Context. \n\t\t * This is used to extend the native AudioContext\n\t\t * @param {AudioContext} context\n\t\t * @param {String} prop \n\t\t * @private\n\t\t */\n\t Tone.Context.prototype._defineProperty = function (context, prop) {\n\t if (this.isUndef(this[prop])) {\n\t Object.defineProperty(this, prop, {\n\t get: function () {\n\t if (typeof context[prop] === 'function') {\n\t return context[prop].bind(context);\n\t } else {\n\t return context[prop];\n\t }\n\t },\n\t set: function (val) {\n\t context[prop] = val;\n\t }\n\t });\n\t }\n\t };\n\t /**\n\t\t * The current audio context time\n\t\t * @return {Number}\n\t\t */\n\t Tone.Context.prototype.now = function () {\n\t return this._context.currentTime;\n\t };\n\t /**\n\t\t * Generate a web worker\n\t\t * @return {WebWorker}\n\t\t * @private\n\t\t */\n\t Tone.Context.prototype._createWorker = function () {\n\t //URL Shim\n\t window.URL = window.URL || window.webkitURL;\n\t var blob = new Blob([//the initial timeout time\n\t 'var timeoutTime = ' + (this._updateInterval * 1000).toFixed(1) + ';' + //onmessage callback\n\t 'self.onmessage = function(msg){' + '\\ttimeoutTime = parseInt(msg.data);' + '};' + //the tick function which posts a message\n\t //and schedules a new tick\n\t 'function tick(){' + '\\tsetTimeout(tick, timeoutTime);' + '\\tself.postMessage(\\'tick\\');' + '}' + //call tick initially\n\t 'tick();']);\n\t var blobUrl = URL.createObjectURL(blob);\n\t var worker = new Worker(blobUrl);\n\t worker.addEventListener('message', function () {\n\t // tick the clock\n\t this.emit('tick');\n\t }.bind(this));\n\t //lag compensation\n\t worker.addEventListener('message', function () {\n\t var now = this.now();\n\t if (this.isNumber(this._lastUpdate)) {\n\t var diff = now - this._lastUpdate;\n\t this._computedUpdateInterval = Math.max(diff, this._computedUpdateInterval * 0.97);\n\t }\n\t this._lastUpdate = now;\n\t }.bind(this));\n\t return worker;\n\t };\n\t /**\n\t\t * Generate a looped buffer at some constant value.\n\t\t * @param {Number} val\n\t\t * @return {BufferSourceNode}\n\t\t */\n\t Tone.Context.prototype.getConstant = function (val) {\n\t if (this._constants[val]) {\n\t return this._constants[val];\n\t } else {\n\t var buffer = this._context.createBuffer(1, 128, this._context.sampleRate);\n\t var arr = buffer.getChannelData(0);\n\t for (var i = 0; i < arr.length; i++) {\n\t arr[i] = val;\n\t }\n\t var constant = this._context.createBufferSource();\n\t constant.channelCount = 1;\n\t constant.channelCountMode = 'explicit';\n\t constant.buffer = buffer;\n\t constant.loop = true;\n\t constant.start(0);\n\t this._constants[val] = constant;\n\t return constant;\n\t }\n\t };\n\t /**\n\t\t * This is the time that the clock is falling behind\n\t\t * the scheduled update interval. The Context automatically\n\t\t * adjusts for the lag and schedules further in advance.\n\t\t * @type {Number}\n\t\t * @memberOf Tone.Context\n\t\t * @name lag\n\t\t * @static\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone.Context.prototype, 'lag', {\n\t get: function () {\n\t var diff = this._computedUpdateInterval - this._updateInterval;\n\t diff = Math.max(diff, 0);\n\t return diff;\n\t }\n\t });\n\t /**\n\t\t * The amount of time in advance that events are scheduled.\n\t\t * The lookAhead will adjust slightly in response to the \n\t\t * measured update time to try to avoid clicks.\n\t\t * @type {Number}\n\t\t * @memberOf Tone.Context\n\t\t * @name lookAhead\n\t\t * @static\n\t\t */\n\t Object.defineProperty(Tone.Context.prototype, 'lookAhead', {\n\t get: function () {\n\t return this._lookAhead;\n\t },\n\t set: function (lA) {\n\t this._lookAhead = lA;\n\t }\n\t });\n\t /**\n\t\t * How often the Web Worker callback is invoked.\n\t\t * This number corresponds to how responsive the scheduling\n\t\t * can be. Context.updateInterval + Context.lookAhead gives you the\n\t\t * total latency between scheduling an event and hearing it.\n\t\t * @type {Number}\n\t\t * @memberOf Tone.Context\n\t\t * @name updateInterval\n\t\t * @static\n\t\t */\n\t Object.defineProperty(Tone.Context.prototype, 'updateInterval', {\n\t get: function () {\n\t return this._updateInterval;\n\t },\n\t set: function (interval) {\n\t this._updateInterval = Math.max(interval, Tone.prototype.blockTime);\n\t this._worker.postMessage(Math.max(interval * 1000, 1));\n\t }\n\t });\n\t /**\n\t\t * The type of playback, which affects tradeoffs between audio \n\t\t * output latency and responsiveness. \n\t\t * \n\t\t * In addition to setting the value in seconds, the latencyHint also\n\t\t * accepts the strings \"interactive\" (prioritizes low latency), \n\t\t * \"playback\" (prioritizes sustained playback), \"balanced\" (balances\n\t\t * latency and performance), and \"fastest\" (lowest latency, might glitch more often). \n\t\t * @type {String|Seconds}\n\t\t * @memberOf Tone.Context#\n\t\t * @name latencyHint\n\t\t * @static\n\t\t * @example\n\t\t * //set the lookAhead to 0.3 seconds\n\t\t * Tone.context.latencyHint = 0.3;\n\t\t */\n\t Object.defineProperty(Tone.Context.prototype, 'latencyHint', {\n\t get: function () {\n\t return this._latencyHint;\n\t },\n\t set: function (hint) {\n\t var lookAhead = hint;\n\t this._latencyHint = hint;\n\t if (this.isString(hint)) {\n\t switch (hint) {\n\t case 'interactive':\n\t lookAhead = 0.1;\n\t this._context.latencyHint = hint;\n\t break;\n\t case 'playback':\n\t lookAhead = 0.8;\n\t this._context.latencyHint = hint;\n\t break;\n\t case 'balanced':\n\t lookAhead = 0.25;\n\t this._context.latencyHint = hint;\n\t break;\n\t case 'fastest':\n\t lookAhead = 0.01;\n\t break;\n\t }\n\t }\n\t this.lookAhead = lookAhead;\n\t this.updateInterval = lookAhead / 3;\n\t }\n\t });\n\t /**\n\t\t * Shim all connect/disconnect and some deprecated methods which are still in\n\t\t * some older implementations.\n\t\t * @private\n\t\t */\n\t function shimConnect() {\n\t var nativeConnect = AudioNode.prototype.connect;\n\t var nativeDisconnect = AudioNode.prototype.disconnect;\n\t //replace the old connect method\n\t function toneConnect(B, outNum, inNum) {\n\t if (B.input) {\n\t if (Array.isArray(B.input)) {\n\t if (Tone.prototype.isUndef(inNum)) {\n\t inNum = 0;\n\t }\n\t this.connect(B.input[inNum]);\n\t } else {\n\t this.connect(B.input, outNum, inNum);\n\t }\n\t } else {\n\t try {\n\t if (B instanceof AudioNode) {\n\t nativeConnect.call(this, B, outNum, inNum);\n\t } else {\n\t nativeConnect.call(this, B, outNum);\n\t }\n\t } catch (e) {\n\t throw new Error('error connecting to node: ' + B + '\\n' + e);\n\t }\n\t }\n\t }\n\t //replace the old disconnect method\n\t function toneDisconnect(B, outNum, inNum) {\n\t if (B && B.input && Array.isArray(B.input)) {\n\t if (Tone.prototype.isUndef(inNum)) {\n\t inNum = 0;\n\t }\n\t this.disconnect(B.input[inNum], outNum, inNum);\n\t } else if (B && B.input) {\n\t this.disconnect(B.input, outNum, inNum);\n\t } else {\n\t try {\n\t nativeDisconnect.apply(this, arguments);\n\t } catch (e) {\n\t throw new Error('error disconnecting node: ' + B + '\\n' + e);\n\t }\n\t }\n\t }\n\t if (AudioNode.prototype.connect !== toneConnect) {\n\t AudioNode.prototype.connect = toneConnect;\n\t AudioNode.prototype.disconnect = toneDisconnect;\n\t }\n\t }\n\t // set the audio context initially\n\t if (Tone.supported) {\n\t shimConnect();\n\t Tone.context = new Tone.Context();\n\t } else {\n\t console.warn('This browser does not support Tone.js');\n\t }\n\t return Tone.Context;\n\t});\n\tModule(function (Tone) {\n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tTYPES\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * Units which a value can take on.\n\t\t * @enum {String}\n\t\t */\n\t Tone.Type = {\n\t /** \n\t\t\t * Default units\n\t\t\t * @typedef {Default}\n\t\t\t */\n\t Default: 'number',\n\t /**\n\t\t\t * Time can be described in a number of ways. Read more [Time](https://github.com/Tonejs/Tone.js/wiki/Time).\n\t\t\t *\n\t\t\t * <ul>\n\t\t\t * <li>Numbers, which will be taken literally as the time (in seconds).</li>\n\t\t\t * <li>Notation, (\"4n\", \"8t\") describes time in BPM and time signature relative values.</li>\n\t\t\t * <li>TransportTime, (\"4:3:2\") will also provide tempo and time signature relative times \n\t\t\t * in the form BARS:QUARTERS:SIXTEENTHS.</li>\n\t\t\t * <li>Frequency, (\"8hz\") is converted to the length of the cycle in seconds.</li>\n\t\t\t * <li>Now-Relative, (\"+1\") prefix any of the above with \"+\" and it will be interpreted as \n\t\t\t * \"the current time plus whatever expression follows\".</li>\n\t\t\t * <li>Expressions, (\"3:0 + 2 - (1m / 7)\") any of the above can also be combined \n\t\t\t * into a mathematical expression which will be evaluated to compute the desired time.</li>\n\t\t\t * <li>No Argument, for methods which accept time, no argument will be interpreted as \n\t\t\t * \"now\" (i.e. the currentTime).</li>\n\t\t\t * </ul>\n\t\t\t * \n\t\t\t * @typedef {Time}\n\t\t\t */\n\t Time: 'time',\n\t /**\n\t\t\t * Frequency can be described similar to time, except ultimately the\n\t\t\t * values are converted to frequency instead of seconds. A number\n\t\t\t * is taken literally as the value in hertz. Additionally any of the \n\t\t\t * Time encodings can be used. Note names in the form\n\t\t\t * of NOTE OCTAVE (i.e. C4) are also accepted and converted to their\n\t\t\t * frequency value. \n\t\t\t * @typedef {Frequency}\n\t\t\t */\n\t Frequency: 'frequency',\n\t /**\n\t\t\t * TransportTime describes a position along the Transport's timeline. It is\n\t\t\t * similar to Time in that it uses all the same encodings, but TransportTime specifically\n\t\t\t * pertains to the Transport's timeline, which is startable, stoppable, loopable, and seekable. \n\t\t\t * [Read more](https://github.com/Tonejs/Tone.js/wiki/TransportTime)\n\t\t\t * @typedef {TransportTime}\n\t\t\t */\n\t TransportTime: 'transportTime',\n\t /** \n\t\t\t * Ticks are the basic subunit of the Transport. They are\n\t\t\t * the smallest unit of time that the Transport supports.\n\t\t\t * @typedef {Ticks}\n\t\t\t */\n\t Ticks: 'ticks',\n\t /** \n\t\t\t * Normal values are within the range [0, 1].\n\t\t\t * @typedef {NormalRange}\n\t\t\t */\n\t NormalRange: 'normalRange',\n\t /** \n\t\t\t * AudioRange values are between [-1, 1].\n\t\t\t * @typedef {AudioRange}\n\t\t\t */\n\t AudioRange: 'audioRange',\n\t /** \n\t\t\t * Decibels are a logarithmic unit of measurement which is useful for volume\n\t\t\t * because of the logarithmic way that we perceive loudness. 0 decibels \n\t\t\t * means no change in volume. -10db is approximately half as loud and 10db \n\t\t\t * is twice is loud. \n\t\t\t * @typedef {Decibels}\n\t\t\t */\n\t Decibels: 'db',\n\t /** \n\t\t\t * Half-step note increments, i.e. 12 is an octave above the root. and 1 is a half-step up.\n\t\t\t * @typedef {Interval}\n\t\t\t */\n\t Interval: 'interval',\n\t /** \n\t\t\t * Beats per minute. \n\t\t\t * @typedef {BPM}\n\t\t\t */\n\t BPM: 'bpm',\n\t /** \n\t\t\t * The value must be greater than or equal to 0.\n\t\t\t * @typedef {Positive}\n\t\t\t */\n\t Positive: 'positive',\n\t /** \n\t\t\t * A cent is a hundredth of a semitone. \n\t\t\t * @typedef {Cents}\n\t\t\t */\n\t Cents: 'cents',\n\t /** \n\t\t\t * Angle between 0 and 360. \n\t\t\t * @typedef {Degrees}\n\t\t\t */\n\t Degrees: 'degrees',\n\t /** \n\t\t\t * A number representing a midi note.\n\t\t\t * @typedef {MIDI}\n\t\t\t */\n\t MIDI: 'midi',\n\t /** \n\t\t\t * A colon-separated representation of time in the form of\n\t\t\t * Bars:Beats:Sixteenths. \n\t\t\t * @typedef {BarsBeatsSixteenths}\n\t\t\t */\n\t BarsBeatsSixteenths: 'barsBeatsSixteenths',\n\t /** \n\t\t\t * Sampling is the reduction of a continuous signal to a discrete signal.\n\t\t\t * Audio is typically sampled 44100 times per second. \n\t\t\t * @typedef {Samples}\n\t\t\t */\n\t Samples: 'samples',\n\t /** \n\t\t\t * Hertz are a frequency representation defined as one cycle per second.\n\t\t\t * @typedef {Hertz}\n\t\t\t */\n\t Hertz: 'hertz',\n\t /** \n\t\t\t * A frequency represented by a letter name, \n\t\t\t * accidental and octave. This system is known as\n\t\t\t * [Scientific Pitch Notation](https://en.wikipedia.org/wiki/Scientific_pitch_notation).\n\t\t\t * @typedef {Note}\n\t\t\t */\n\t Note: 'note',\n\t /** \n\t\t\t * One millisecond is a thousandth of a second. \n\t\t\t * @typedef {Milliseconds}\n\t\t\t */\n\t Milliseconds: 'milliseconds',\n\t /** \n\t\t\t * Seconds are the time unit of the AudioContext. In the end, \n\t\t\t * all values need to be evaluated to seconds. \n\t\t\t * @typedef {Seconds}\n\t\t\t */\n\t Seconds: 'seconds',\n\t /** \n\t\t\t * A string representing a duration relative to a measure. \n\t\t\t * <ul>\n\t\t\t * \t<li>\"4n\" = quarter note</li>\n\t\t\t * \t<li>\"2m\" = two measures</li>\n\t\t\t * \t<li>\"8t\" = eighth-note triplet</li>\n\t\t\t * </ul>\n\t\t\t * @typedef {Notation}\n\t\t\t */\n\t Notation: 'notation'\n\t };\n\t ///////////////////////////////////////////////////////////////////////////\n\t // AUGMENT TONE's PROTOTYPE\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * Convert Time into seconds.\n\t\t * \n\t\t * Unlike the method which it overrides, this takes into account \n\t\t * transporttime and musical notation.\n\t\t *\n\t\t * Time : 1.40\n\t\t * Notation: 4n|1m|2t\n\t\t * Now Relative: +3n\n\t\t * Math: 3n+16n or even complicated expressions ((3n*2)/6 + 1)\n\t\t *\n\t\t * @param {Time} time \n\t\t * @return {Seconds} \n\t\t */\n\t Tone.prototype.toSeconds = function (time) {\n\t if (this.isNumber(time)) {\n\t return time;\n\t } else if (this.isUndef(time)) {\n\t return this.now();\n\t } else if (this.isString(time)) {\n\t return new Tone.Time(time).toSeconds();\n\t } else if (time instanceof Tone.TimeBase) {\n\t return time.toSeconds();\n\t }\n\t };\n\t /**\n\t\t * Convert a frequency representation into a number.\n\t\t * @param {Frequency} freq \n\t\t * @return {Hertz} the frequency in hertz\n\t\t */\n\t Tone.prototype.toFrequency = function (freq) {\n\t if (this.isNumber(freq)) {\n\t return freq;\n\t } else if (this.isString(freq) || this.isUndef(freq)) {\n\t return new Tone.Frequency(freq).valueOf();\n\t } else if (freq instanceof Tone.TimeBase) {\n\t return freq.toFrequency();\n\t }\n\t };\n\t /**\n\t\t * Convert a time representation into ticks.\n\t\t * @param {Time} time\n\t\t * @return {Ticks} the time in ticks\n\t\t */\n\t Tone.prototype.toTicks = function (time) {\n\t if (this.isNumber(time) || this.isString(time)) {\n\t return new Tone.TransportTime(time).toTicks();\n\t } else if (this.isUndef(time)) {\n\t return Tone.Transport.ticks;\n\t } else if (time instanceof Tone.TimeBase) {\n\t return time.toTicks();\n\t }\n\t };\n\t return Tone;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Param wraps the native Web Audio's AudioParam to provide\n\t\t * additional unit conversion functionality. It also\n\t\t * serves as a base-class for classes which have a single,\n\t\t * automatable parameter. \n\t\t * @extends {Tone}\n\t\t * @param {AudioParam} param The parameter to wrap.\n\t\t * @param {Tone.Type} units The units of the audio param.\n\t\t * @param {Boolean} convert If the param should be converted.\n\t\t */\n\t Tone.Param = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'param',\n\t 'units',\n\t 'convert'\n\t ], Tone.Param.defaults);\n\t /**\n\t\t\t * The native parameter to control\n\t\t\t * @type {AudioParam}\n\t\t\t * @private\n\t\t\t */\n\t this._param = this.input = options.param;\n\t /**\n\t\t\t * The units of the parameter\n\t\t\t * @type {Tone.Type}\n\t\t\t */\n\t this.units = options.units;\n\t /**\n\t\t\t * If the value should be converted or not\n\t\t\t * @type {Boolean}\n\t\t\t */\n\t this.convert = options.convert;\n\t /**\n\t\t\t * True if the signal value is being overridden by \n\t\t\t * a connected signal.\n\t\t\t * @readOnly\n\t\t\t * @type {boolean}\n\t\t\t * @private\n\t\t\t */\n\t this.overridden = false;\n\t /**\n\t\t\t * If there is an LFO, this is where it is held.\n\t\t\t * @type {Tone.LFO}\n\t\t\t * @private\n\t\t\t */\n\t this._lfo = null;\n\t if (this.isObject(options.lfo)) {\n\t this.value = options.lfo;\n\t } else if (!this.isUndef(options.value)) {\n\t this.value = options.value;\n\t }\n\t };\n\t Tone.extend(Tone.Param);\n\t /**\n\t\t * Defaults\n\t\t * @type {Object}\n\t\t * @const\n\t\t */\n\t Tone.Param.defaults = {\n\t 'units': Tone.Type.Default,\n\t 'convert': true,\n\t 'param': undefined\n\t };\n\t /**\n\t\t * The current value of the parameter. \n\t\t * @memberOf Tone.Param#\n\t\t * @type {Number}\n\t\t * @name value\n\t\t */\n\t Object.defineProperty(Tone.Param.prototype, 'value', {\n\t get: function () {\n\t return this._toUnits(this._param.value);\n\t },\n\t set: function (value) {\n\t if (this.isObject(value)) {\n\t //throw an error if the LFO needs to be included\n\t if (this.isUndef(Tone.LFO)) {\n\t throw new Error('Include \\'Tone.LFO\\' to use an LFO as a Param value.');\n\t }\n\t //remove the old one\n\t if (this._lfo) {\n\t this._lfo.dispose();\n\t }\n\t this._lfo = new Tone.LFO(value).start();\n\t this._lfo.connect(this.input);\n\t } else {\n\t var convertedVal = this._fromUnits(value);\n\t this._param.cancelScheduledValues(0);\n\t this._param.value = convertedVal;\n\t }\n\t }\n\t });\n\t /**\n\t\t * Convert the given value from the type specified by Tone.Param.units\n\t\t * into the destination value (such as Gain or Frequency).\n\t\t * @private\n\t\t * @param {*} val the value to convert\n\t\t * @return {number} the number which the value should be set to\n\t\t */\n\t Tone.Param.prototype._fromUnits = function (val) {\n\t if (this.convert || this.isUndef(this.convert)) {\n\t switch (this.units) {\n\t case Tone.Type.Time:\n\t return this.toSeconds(val);\n\t case Tone.Type.Frequency:\n\t return this.toFrequency(val);\n\t case Tone.Type.Decibels:\n\t return this.dbToGain(val);\n\t case Tone.Type.NormalRange:\n\t return Math.min(Math.max(val, 0), 1);\n\t case Tone.Type.AudioRange:\n\t return Math.min(Math.max(val, -1), 1);\n\t case Tone.Type.Positive:\n\t return Math.max(val, 0);\n\t default:\n\t return val;\n\t }\n\t } else {\n\t return val;\n\t }\n\t };\n\t /**\n\t\t * Convert the parameters value into the units specified by Tone.Param.units.\n\t\t * @private\n\t\t * @param {number} val the value to convert\n\t\t * @return {number}\n\t\t */\n\t Tone.Param.prototype._toUnits = function (val) {\n\t if (this.convert || this.isUndef(this.convert)) {\n\t switch (this.units) {\n\t case Tone.Type.Decibels:\n\t return this.gainToDb(val);\n\t default:\n\t return val;\n\t }\n\t } else {\n\t return val;\n\t }\n\t };\n\t /**\n\t\t * the minimum output value\n\t\t * @type {Number}\n\t\t * @private\n\t\t */\n\t Tone.Param.prototype._minOutput = 0.00001;\n\t /**\n\t\t * Schedules a parameter value change at the given time.\n\t\t * @param {*}\tvalue The value to set the signal.\n\t\t * @param {Time} time The time when the change should occur.\n\t\t * @returns {Tone.Param} this\n\t\t * @example\n\t\t * //set the frequency to \"G4\" in exactly 1 second from now. \n\t\t * freq.setValueAtTime(\"G4\", \"+1\");\n\t\t */\n\t Tone.Param.prototype.setValueAtTime = function (value, time) {\n\t value = this._fromUnits(value);\n\t time = this.toSeconds(time);\n\t if (time <= this.now() + this.blockTime) {\n\t this._param.value = value;\n\t } else {\n\t this._param.setValueAtTime(value, time);\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Creates a schedule point with the current value at the current time.\n\t\t * This is useful for creating an automation anchor point in order to \n\t\t * schedule changes from the current value. \n\t\t *\n\t\t * @param {number=} now (Optionally) pass the now value in. \n\t\t * @returns {Tone.Param} this\n\t\t */\n\t Tone.Param.prototype.setRampPoint = function (now) {\n\t now = this.defaultArg(now, this.now());\n\t var currentVal = this._param.value;\n\t // exponentialRampToValueAt cannot ever ramp from or to 0\n\t // More info: https://bugzilla.mozilla.org/show_bug.cgi?id=1125600#c2\n\t if (currentVal === 0) {\n\t currentVal = this._minOutput;\n\t }\n\t this._param.setValueAtTime(currentVal, now);\n\t return this;\n\t };\n\t /**\n\t\t * Schedules a linear continuous change in parameter value from the \n\t\t * previous scheduled parameter value to the given value.\n\t\t * \n\t\t * @param {number} value \n\t\t * @param {Time} endTime \n\t\t * @returns {Tone.Param} this\n\t\t */\n\t Tone.Param.prototype.linearRampToValueAtTime = function (value, endTime) {\n\t value = this._fromUnits(value);\n\t this._param.linearRampToValueAtTime(value, this.toSeconds(endTime));\n\t return this;\n\t };\n\t /**\n\t\t * Schedules an exponential continuous change in parameter value from \n\t\t * the previous scheduled parameter value to the given value.\n\t\t * \n\t\t * @param {number} value \n\t\t * @param {Time} endTime \n\t\t * @returns {Tone.Param} this\n\t\t */\n\t Tone.Param.prototype.exponentialRampToValueAtTime = function (value, endTime) {\n\t value = this._fromUnits(value);\n\t value = Math.max(this._minOutput, value);\n\t this._param.exponentialRampToValueAtTime(value, this.toSeconds(endTime));\n\t return this;\n\t };\n\t /**\n\t\t * Schedules an exponential continuous change in parameter value from \n\t\t * the current time and current value to the given value over the \n\t\t * duration of the rampTime.\n\t\t * \n\t\t * @param {number} value The value to ramp to.\n\t\t * @param {Time} rampTime the time that it takes the \n\t\t * value to ramp from it's current value\n\t\t * @param {Time}\t[startTime=now] \tWhen the ramp should start. \n\t\t * @returns {Tone.Param} this\n\t\t * @example\n\t\t * //exponentially ramp to the value 2 over 4 seconds. \n\t\t * signal.exponentialRampToValue(2, 4);\n\t\t */\n\t Tone.Param.prototype.exponentialRampToValue = function (value, rampTime, startTime) {\n\t startTime = this.toSeconds(startTime);\n\t this.setRampPoint(startTime);\n\t this.exponentialRampToValueAtTime(value, startTime + this.toSeconds(rampTime));\n\t return this;\n\t };\n\t /**\n\t\t * Schedules an linear continuous change in parameter value from \n\t\t * the current time and current value to the given value over the \n\t\t * duration of the rampTime.\n\t\t * \n\t\t * @param {number} value The value to ramp to.\n\t\t * @param {Time} rampTime the time that it takes the \n\t\t * value to ramp from it's current value\n\t\t * @param {Time}\t[startTime=now] \tWhen the ramp should start. \n\t\t * @returns {Tone.Param} this\n\t\t * @example\n\t\t * //linearly ramp to the value 4 over 3 seconds. \n\t\t * signal.linearRampToValue(4, 3);\n\t\t */\n\t Tone.Param.prototype.linearRampToValue = function (value, rampTime, startTime) {\n\t startTime = this.toSeconds(startTime);\n\t this.setRampPoint(startTime);\n\t this.linearRampToValueAtTime(value, startTime + this.toSeconds(rampTime));\n\t return this;\n\t };\n\t /**\n\t\t * Start exponentially approaching the target value at the given time with\n\t\t * a rate having the given time constant.\n\t\t * @param {number} value \n\t\t * @param {Time} startTime \n\t\t * @param {number} timeConstant \n\t\t * @returns {Tone.Param} this \n\t\t */\n\t Tone.Param.prototype.setTargetAtTime = function (value, startTime, timeConstant) {\n\t value = this._fromUnits(value);\n\t // The value will never be able to approach without timeConstant > 0.\n\t // http://www.w3.org/TR/webaudio/#dfn-setTargetAtTime, where the equation\n\t // is described. 0 results in a division by 0.\n\t value = Math.max(this._minOutput, value);\n\t timeConstant = Math.max(this._minOutput, timeConstant);\n\t this._param.setTargetAtTime(value, this.toSeconds(startTime), timeConstant);\n\t return this;\n\t };\n\t /**\n\t\t * Sets an array of arbitrary parameter values starting at the given time\n\t\t * for the given duration.\n\t\t * \t\n\t\t * @param {Array} values \n\t\t * @param {Time} startTime \n\t\t * @param {Time} duration \n\t\t * @returns {Tone.Param} this\n\t\t */\n\t Tone.Param.prototype.setValueCurveAtTime = function (values, startTime, duration) {\n\t for (var i = 0; i < values.length; i++) {\n\t values[i] = this._fromUnits(values[i]);\n\t }\n\t this._param.setValueCurveAtTime(values, this.toSeconds(startTime), this.toSeconds(duration));\n\t return this;\n\t };\n\t /**\n\t\t * Cancels all scheduled parameter changes with times greater than or \n\t\t * equal to startTime.\n\t\t * \n\t\t * @param {Time} startTime\n\t\t * @returns {Tone.Param} this\n\t\t */\n\t Tone.Param.prototype.cancelScheduledValues = function (startTime) {\n\t this._param.cancelScheduledValues(this.toSeconds(startTime));\n\t return this;\n\t };\n\t /**\n\t\t * Ramps to the given value over the duration of the rampTime. \n\t\t * Automatically selects the best ramp type (exponential or linear)\n\t\t * depending on the `units` of the signal\n\t\t * \n\t\t * @param {number} value \n\t\t * @param {Time} rampTime \tThe time that it takes the \n\t\t * value to ramp from it's current value\n\t\t * @param {Time}\t[startTime=now] \tWhen the ramp should start. \n\t\t * @returns {Tone.Param} this\n\t\t * @example\n\t\t * //ramp to the value either linearly or exponentially \n\t\t * //depending on the \"units\" value of the signal\n\t\t * signal.rampTo(0, 10);\n\t\t * @example\n\t\t * //schedule it to ramp starting at a specific time\n\t\t * signal.rampTo(0, 10, 5)\n\t\t */\n\t Tone.Param.prototype.rampTo = function (value, rampTime, startTime) {\n\t rampTime = this.defaultArg(rampTime, 0);\n\t if (this.units === Tone.Type.Frequency || this.units === Tone.Type.BPM || this.units === Tone.Type.Decibels) {\n\t this.exponentialRampToValue(value, rampTime, startTime);\n\t } else {\n\t this.linearRampToValue(value, rampTime, startTime);\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * The LFO created by the signal instance. If none\n\t\t * was created, this is null.\n\t\t * @type {Tone.LFO}\n\t\t * @readOnly\n\t\t * @memberOf Tone.Param#\n\t\t * @name lfo\n\t\t */\n\t Object.defineProperty(Tone.Param.prototype, 'lfo', {\n\t get: function () {\n\t return this._lfo;\n\t }\n\t });\n\t /**\n\t\t * Clean up\n\t\t * @returns {Tone.Param} this\n\t\t */\n\t Tone.Param.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._param = null;\n\t if (this._lfo) {\n\t this._lfo.dispose();\n\t this._lfo = null;\n\t }\n\t return this;\n\t };\n\t return Tone.Param;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * createGain shim\n\t\t * @private\n\t\t */\n\t if (window.GainNode && !AudioContext.prototype.createGain) {\n\t AudioContext.prototype.createGain = AudioContext.prototype.createGainNode;\n\t }\n\t /**\n\t\t * @class A thin wrapper around the Native Web Audio GainNode.\n\t\t * The GainNode is a basic building block of the Web Audio\n\t\t * API and is useful for routing audio and adjusting gains. \n\t\t * @extends {Tone}\n\t\t * @param {Number=} gain The initial gain of the GainNode\n\t\t * @param {Tone.Type=} units The units of the gain parameter. \n\t\t */\n\t Tone.Gain = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'gain',\n\t 'units'\n\t ], Tone.Gain.defaults);\n\t /**\n\t\t\t * The GainNode\n\t\t\t * @type {GainNode}\n\t\t\t * @private\n\t\t\t */\n\t this.input = this.output = this._gainNode = this.context.createGain();\n\t /**\n\t\t\t * The gain parameter of the gain node.\n\t\t\t * @type {Tone.Param}\n\t\t\t * @signal\n\t\t\t */\n\t this.gain = new Tone.Param({\n\t 'param': this._gainNode.gain,\n\t 'units': options.units,\n\t 'value': options.gain,\n\t 'convert': options.convert\n\t });\n\t this._readOnly('gain');\n\t };\n\t Tone.extend(Tone.Gain);\n\t /**\n\t\t * The defaults\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.Gain.defaults = {\n\t 'gain': 1,\n\t 'convert': true\n\t };\n\t /**\n\t\t * Clean up.\n\t\t * @return {Tone.Gain} this\n\t\t */\n\t Tone.Gain.prototype.dispose = function () {\n\t Tone.Param.prototype.dispose.call(this);\n\t this._gainNode.disconnect();\n\t this._gainNode = null;\n\t this._writable('gain');\n\t this.gain.dispose();\n\t this.gain = null;\n\t };\n\t //STATIC///////////////////////////////////////////////////////////////////\n\t /**\n\t\t * Create input and outputs for this object.\n\t\t * @param {Number} input The number of inputs\n\t\t * @param {Number=} outputs The number of outputs\n\t\t * @return {Tone} this\n\t\t * @internal\n\t\t */\n\t Tone.prototype.createInsOuts = function (inputs, outputs) {\n\t if (inputs === 1) {\n\t this.input = new Tone.Gain();\n\t } else if (inputs > 1) {\n\t this.input = new Array(inputs);\n\t }\n\t if (outputs === 1) {\n\t this.output = new Tone.Gain();\n\t } else if (outputs > 1) {\n\t this.output = new Array(inputs);\n\t }\n\t };\n\t ///////////////////////////////////////////////////////////////////////////\n\t return Tone.Gain;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class A signal is an audio-rate value. Tone.Signal is a core component of the library.\n\t\t * Unlike a number, Signals can be scheduled with sample-level accuracy. Tone.Signal\n\t\t * has all of the methods available to native Web Audio \n\t\t * [AudioParam](http://webaudio.github.io/web-audio-api/#the-audioparam-interface)\n\t\t * as well as additional conveniences. Read more about working with signals \n\t\t * [here](https://github.com/Tonejs/Tone.js/wiki/Signals).\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.Param}\n\t\t * @param {Number|AudioParam} [value] Initial value of the signal. If an AudioParam\n\t\t * is passed in, that parameter will be wrapped\n\t\t * and controlled by the Signal. \n\t\t * @param {string} [units=Number] unit The units the signal is in. \n\t\t * @example\n\t\t * var signal = new Tone.Signal(10);\n\t\t */\n\t Tone.Signal = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'value',\n\t 'units'\n\t ], Tone.Signal.defaults);\n\t /**\n\t\t\t * The node where the constant signal value is scaled.\n\t\t\t * @type {GainNode}\n\t\t\t * @private\n\t\t\t */\n\t this.output = this._gain = this.context.createGain();\n\t options.param = this._gain.gain;\n\t Tone.Param.call(this, options);\n\t /**\n\t\t\t * The node where the value is set.\n\t\t\t * @type {Tone.Param}\n\t\t\t * @private\n\t\t\t */\n\t this.input = this._param = this._gain.gain;\n\t //connect the const output to the node output\n\t this.context.getConstant(1).chain(this._gain);\n\t };\n\t Tone.extend(Tone.Signal, Tone.Param);\n\t /**\n\t\t * The default values\n\t\t * @type {Object}\n\t\t * @static\n\t\t * @const\n\t\t */\n\t Tone.Signal.defaults = {\n\t 'value': 0,\n\t 'units': Tone.Type.Default,\n\t 'convert': true\n\t };\n\t /**\n\t\t * When signals connect to other signals or AudioParams, \n\t\t * they take over the output value of that signal or AudioParam. \n\t\t * For all other nodes, the behavior is the same as a default <code>connect</code>. \n\t\t *\n\t\t * @override\n\t\t * @param {AudioParam|AudioNode|Tone.Signal|Tone} node \n\t\t * @param {number} [outputNumber=0] The output number to connect from.\n\t\t * @param {number} [inputNumber=0] The input number to connect to.\n\t\t * @returns {Tone.SignalBase} this\n\t\t * @method\n\t\t */\n\t Tone.Signal.prototype.connect = Tone.SignalBase.prototype.connect;\n\t /**\n\t\t * dispose and disconnect\n\t\t * @returns {Tone.Signal} this\n\t\t */\n\t Tone.Signal.prototype.dispose = function () {\n\t Tone.Param.prototype.dispose.call(this);\n\t this._param = null;\n\t this._gain.disconnect();\n\t this._gain = null;\n\t return this;\n\t };\n\t return Tone.Signal;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class A Timeline class for scheduling and maintaining state\n\t\t * along a timeline. All events must have a \"time\" property. \n\t\t * Internally, events are stored in time order for fast \n\t\t * retrieval.\n\t\t * @extends {Tone}\n\t\t * @param {Positive} [memory=Infinity] The number of previous events that are retained.\n\t\t */\n\t Tone.Timeline = function () {\n\t var options = this.optionsObject(arguments, ['memory'], Tone.Timeline.defaults);\n\t /**\n\t\t\t * The array of scheduled timeline events\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._timeline = [];\n\t /**\n\t\t\t * An array of items to remove from the list. \n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._toRemove = [];\n\t /**\n\t\t\t * Flag if the tieline is mid iteration\n\t\t\t * @private\n\t\t\t * @type {Boolean}\n\t\t\t */\n\t this._iterating = false;\n\t /**\n\t\t\t * The memory of the timeline, i.e.\n\t\t\t * how many events in the past it will retain\n\t\t\t * @type {Positive}\n\t\t\t */\n\t this.memory = options.memory;\n\t };\n\t Tone.extend(Tone.Timeline);\n\t /**\n\t\t * the default parameters\n\t\t * @static\n\t\t * @const\n\t\t */\n\t Tone.Timeline.defaults = { 'memory': Infinity };\n\t /**\n\t\t * The number of items in the timeline.\n\t\t * @type {Number}\n\t\t * @memberOf Tone.Timeline#\n\t\t * @name length\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone.Timeline.prototype, 'length', {\n\t get: function () {\n\t return this._timeline.length;\n\t }\n\t });\n\t /**\n\t\t * Insert an event object onto the timeline. Events must have a \"time\" attribute.\n\t\t * @param {Object} event The event object to insert into the \n\t\t * timeline. \n\t\t * @returns {Tone.Timeline} this\n\t\t */\n\t Tone.Timeline.prototype.add = function (event) {\n\t //the event needs to have a time attribute\n\t if (this.isUndef(event.time)) {\n\t throw new Error('Tone.Timeline: events must have a time attribute');\n\t }\n\t if (this._timeline.length) {\n\t var index = this._search(event.time);\n\t this._timeline.splice(index + 1, 0, event);\n\t } else {\n\t this._timeline.push(event);\n\t }\n\t //if the length is more than the memory, remove the previous ones\n\t if (this.length > this.memory) {\n\t var diff = this.length - this.memory;\n\t this._timeline.splice(0, diff);\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Remove an event from the timeline.\n\t\t * @param {Object} event The event object to remove from the list.\n\t\t * @returns {Tone.Timeline} this\n\t\t */\n\t Tone.Timeline.prototype.remove = function (event) {\n\t if (this._iterating) {\n\t this._toRemove.push(event);\n\t } else {\n\t var index = this._timeline.indexOf(event);\n\t if (index !== -1) {\n\t this._timeline.splice(index, 1);\n\t }\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Get the nearest event whose time is less than or equal to the given time.\n\t\t * @param {Number} time The time to query.\n\t\t * @returns {Object} The event object set after that time.\n\t\t */\n\t Tone.Timeline.prototype.get = function (time) {\n\t var index = this._search(time);\n\t if (index !== -1) {\n\t return this._timeline[index];\n\t } else {\n\t return null;\n\t }\n\t };\n\t /**\n\t\t * Return the first event in the timeline without removing it\n\t\t * @returns {Object} The first event object\n\t\t */\n\t Tone.Timeline.prototype.peek = function () {\n\t return this._timeline[0];\n\t };\n\t /**\n\t\t * Return the first event in the timeline and remove it\n\t\t * @returns {Object} The first event object\n\t\t */\n\t Tone.Timeline.prototype.shift = function () {\n\t return this._timeline.shift();\n\t };\n\t /**\n\t\t * Get the event which is scheduled after the given time.\n\t\t * @param {Number} time The time to query.\n\t\t * @returns {Object} The event object after the given time\n\t\t */\n\t Tone.Timeline.prototype.getAfter = function (time) {\n\t var index = this._search(time);\n\t if (index + 1 < this._timeline.length) {\n\t return this._timeline[index + 1];\n\t } else {\n\t return null;\n\t }\n\t };\n\t /**\n\t\t * Get the event before the event at the given time.\n\t\t * @param {Number} time The time to query.\n\t\t * @returns {Object} The event object before the given time\n\t\t */\n\t Tone.Timeline.prototype.getBefore = function (time) {\n\t var len = this._timeline.length;\n\t //if it's after the last item, return the last item\n\t if (len > 0 && this._timeline[len - 1].time < time) {\n\t return this._timeline[len - 1];\n\t }\n\t var index = this._search(time);\n\t if (index - 1 >= 0) {\n\t return this._timeline[index - 1];\n\t } else {\n\t return null;\n\t }\n\t };\n\t /**\n\t\t * Cancel events after the given time\n\t\t * @param {Number} time The time to query.\n\t\t * @returns {Tone.Timeline} this\n\t\t */\n\t Tone.Timeline.prototype.cancel = function (after) {\n\t if (this._timeline.length > 1) {\n\t var index = this._search(after);\n\t if (index >= 0) {\n\t if (this._timeline[index].time === after) {\n\t //get the first item with that time\n\t for (var i = index; i >= 0; i--) {\n\t if (this._timeline[i].time === after) {\n\t index = i;\n\t } else {\n\t break;\n\t }\n\t }\n\t this._timeline = this._timeline.slice(0, index);\n\t } else {\n\t this._timeline = this._timeline.slice(0, index + 1);\n\t }\n\t } else {\n\t this._timeline = [];\n\t }\n\t } else if (this._timeline.length === 1) {\n\t //the first item's time\n\t if (this._timeline[0].time >= after) {\n\t this._timeline = [];\n\t }\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Cancel events before or equal to the given time.\n\t\t * @param {Number} time The time to cancel before.\n\t\t * @returns {Tone.Timeline} this\n\t\t */\n\t Tone.Timeline.prototype.cancelBefore = function (time) {\n\t if (this._timeline.length) {\n\t var index = this._search(time);\n\t if (index >= 0) {\n\t this._timeline = this._timeline.slice(index + 1);\n\t }\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Does a binary serach on the timeline array and returns the \n\t\t * nearest event index whose time is after or equal to the given time.\n\t\t * If a time is searched before the first index in the timeline, -1 is returned.\n\t\t * If the time is after the end, the index of the last item is returned.\n\t\t * @param {Number} time \n\t\t * @return {Number} the index in the timeline array \n\t\t * @private\n\t\t */\n\t Tone.Timeline.prototype._search = function (time) {\n\t var beginning = 0;\n\t var len = this._timeline.length;\n\t var end = len;\n\t if (len > 0 && this._timeline[len - 1].time <= time) {\n\t return len - 1;\n\t }\n\t while (beginning < end) {\n\t // calculate the midpoint for roughly equal partition\n\t var midPoint = Math.floor(beginning + (end - beginning) / 2);\n\t var event = this._timeline[midPoint];\n\t var nextEvent = this._timeline[midPoint + 1];\n\t if (event.time === time) {\n\t //choose the last one that has the same time\n\t for (var i = midPoint; i < this._timeline.length; i++) {\n\t var testEvent = this._timeline[i];\n\t if (testEvent.time === time) {\n\t midPoint = i;\n\t }\n\t }\n\t return midPoint;\n\t } else if (event.time < time && nextEvent.time > time) {\n\t return midPoint;\n\t } else if (event.time > time) {\n\t //search lower\n\t end = midPoint;\n\t } else if (event.time < time) {\n\t //search upper\n\t beginning = midPoint + 1;\n\t }\n\t }\n\t return -1;\n\t };\n\t /**\n\t\t * Internal iterator. Applies extra safety checks for \n\t\t * removing items from the array. \n\t\t * @param {Function} callback \n\t\t * @param {Number=} lowerBound \n\t\t * @param {Number=} upperBound \n\t\t * @private\n\t\t */\n\t Tone.Timeline.prototype._iterate = function (callback, lowerBound, upperBound) {\n\t this._iterating = true;\n\t lowerBound = this.defaultArg(lowerBound, 0);\n\t upperBound = this.defaultArg(upperBound, this._timeline.length - 1);\n\t for (var i = lowerBound; i <= upperBound; i++) {\n\t callback(this._timeline[i]);\n\t }\n\t this._iterating = false;\n\t if (this._toRemove.length > 0) {\n\t for (var j = 0; j < this._toRemove.length; j++) {\n\t var index = this._timeline.indexOf(this._toRemove[j]);\n\t if (index !== -1) {\n\t this._timeline.splice(index, 1);\n\t }\n\t }\n\t this._toRemove = [];\n\t }\n\t };\n\t /**\n\t\t * Iterate over everything in the array\n\t\t * @param {Function} callback The callback to invoke with every item\n\t\t * @returns {Tone.Timeline} this\n\t\t */\n\t Tone.Timeline.prototype.forEach = function (callback) {\n\t this._iterate(callback);\n\t return this;\n\t };\n\t /**\n\t\t * Iterate over everything in the array at or before the given time.\n\t\t * @param {Number} time The time to check if items are before\n\t\t * @param {Function} callback The callback to invoke with every item\n\t\t * @returns {Tone.Timeline} this\n\t\t */\n\t Tone.Timeline.prototype.forEachBefore = function (time, callback) {\n\t //iterate over the items in reverse so that removing an item doesn't break things\n\t var upperBound = this._search(time);\n\t if (upperBound !== -1) {\n\t this._iterate(callback, 0, upperBound);\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Iterate over everything in the array after the given time.\n\t\t * @param {Number} time The time to check if items are before\n\t\t * @param {Function} callback The callback to invoke with every item\n\t\t * @returns {Tone.Timeline} this\n\t\t */\n\t Tone.Timeline.prototype.forEachAfter = function (time, callback) {\n\t //iterate over the items in reverse so that removing an item doesn't break things\n\t var lowerBound = this._search(time);\n\t this._iterate(callback, lowerBound + 1);\n\t return this;\n\t };\n\t /**\n\t\t * Iterate over everything in the array at or after the given time. Similar to \n\t\t * forEachAfter, but includes the item(s) at the given time.\n\t\t * @param {Number} time The time to check if items are before\n\t\t * @param {Function} callback The callback to invoke with every item\n\t\t * @returns {Tone.Timeline} this\n\t\t */\n\t Tone.Timeline.prototype.forEachFrom = function (time, callback) {\n\t //iterate over the items in reverse so that removing an item doesn't break things\n\t var lowerBound = this._search(time);\n\t //work backwards until the event time is less than time\n\t while (lowerBound >= 0 && this._timeline[lowerBound].time >= time) {\n\t lowerBound--;\n\t }\n\t this._iterate(callback, lowerBound + 1);\n\t return this;\n\t };\n\t /**\n\t\t * Iterate over everything in the array at the given time\n\t\t * @param {Number} time The time to check if items are before\n\t\t * @param {Function} callback The callback to invoke with every item\n\t\t * @returns {Tone.Timeline} this\n\t\t */\n\t Tone.Timeline.prototype.forEachAtTime = function (time, callback) {\n\t //iterate over the items in reverse so that removing an item doesn't break things\n\t var upperBound = this._search(time);\n\t if (upperBound !== -1) {\n\t this._iterate(function (event) {\n\t if (event.time === time) {\n\t callback(event);\n\t }\n\t }, 0, upperBound);\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Clean up.\n\t\t * @return {Tone.Timeline} this\n\t\t */\n\t Tone.Timeline.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._timeline = null;\n\t this._toRemove = null;\n\t };\n\t return Tone.Timeline;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class A signal which adds the method getValueAtTime. \n\t\t * Code and inspiration from https://github.com/jsantell/web-audio-automation-timeline\n\t\t * @extends {Tone.Param}\n\t\t * @param {Number=} value The initial value of the signal\n\t\t * @param {String=} units The conversion units of the signal.\n\t\t */\n\t Tone.TimelineSignal = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'value',\n\t 'units'\n\t ], Tone.Signal.defaults);\n\t /**\n\t\t\t * The scheduled events\n\t\t\t * @type {Tone.Timeline}\n\t\t\t * @private\n\t\t\t */\n\t this._events = new Tone.Timeline(10);\n\t //constructors\n\t Tone.Signal.apply(this, options);\n\t options.param = this._param;\n\t Tone.Param.call(this, options);\n\t /**\n\t\t\t * The initial scheduled value\n\t\t\t * @type {Number}\n\t\t\t * @private\n\t\t\t */\n\t this._initial = this._fromUnits(this._param.value);\n\t };\n\t Tone.extend(Tone.TimelineSignal, Tone.Param);\n\t /**\n\t\t * The event types of a schedulable signal.\n\t\t * @enum {String}\n\t\t * @private\n\t\t */\n\t Tone.TimelineSignal.Type = {\n\t Linear: 'linear',\n\t Exponential: 'exponential',\n\t Target: 'target',\n\t Curve: 'curve',\n\t Set: 'set'\n\t };\n\t /**\n\t\t * The current value of the signal. \n\t\t * @memberOf Tone.TimelineSignal#\n\t\t * @type {Number}\n\t\t * @name value\n\t\t */\n\t Object.defineProperty(Tone.TimelineSignal.prototype, 'value', {\n\t get: function () {\n\t var now = this.now();\n\t var val = this.getValueAtTime(now);\n\t return this._toUnits(val);\n\t },\n\t set: function (value) {\n\t var convertedVal = this._fromUnits(value);\n\t this._initial = convertedVal;\n\t this.cancelScheduledValues();\n\t this._param.value = convertedVal;\n\t }\n\t });\n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tSCHEDULING\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * Schedules a parameter value change at the given time.\n\t\t * @param {*}\tvalue The value to set the signal.\n\t\t * @param {Time} time The time when the change should occur.\n\t\t * @returns {Tone.TimelineSignal} this\n\t\t * @example\n\t\t * //set the frequency to \"G4\" in exactly 1 second from now. \n\t\t * freq.setValueAtTime(\"G4\", \"+1\");\n\t\t */\n\t Tone.TimelineSignal.prototype.setValueAtTime = function (value, startTime) {\n\t value = this._fromUnits(value);\n\t startTime = this.toSeconds(startTime);\n\t this._events.add({\n\t 'type': Tone.TimelineSignal.Type.Set,\n\t 'value': value,\n\t 'time': startTime\n\t });\n\t //invoke the original event\n\t this._param.setValueAtTime(value, startTime);\n\t return this;\n\t };\n\t /**\n\t\t * Schedules a linear continuous change in parameter value from the \n\t\t * previous scheduled parameter value to the given value.\n\t\t * \n\t\t * @param {number} value \n\t\t * @param {Time} endTime \n\t\t * @returns {Tone.TimelineSignal} this\n\t\t */\n\t Tone.TimelineSignal.prototype.linearRampToValueAtTime = function (value, endTime) {\n\t value = this._fromUnits(value);\n\t endTime = this.toSeconds(endTime);\n\t this._events.add({\n\t 'type': Tone.TimelineSignal.Type.Linear,\n\t 'value': value,\n\t 'time': endTime\n\t });\n\t this._param.linearRampToValueAtTime(value, endTime);\n\t return this;\n\t };\n\t /**\n\t\t * Schedules an exponential continuous change in parameter value from \n\t\t * the previous scheduled parameter value to the given value.\n\t\t * \n\t\t * @param {number} value \n\t\t * @param {Time} endTime \n\t\t * @returns {Tone.TimelineSignal} this\n\t\t */\n\t Tone.TimelineSignal.prototype.exponentialRampToValueAtTime = function (value, endTime) {\n\t //get the previous event and make sure it's not starting from 0\n\t endTime = this.toSeconds(endTime);\n\t var beforeEvent = this._searchBefore(endTime);\n\t if (beforeEvent && beforeEvent.value === 0) {\n\t //reschedule that event\n\t this.setValueAtTime(this._minOutput, beforeEvent.time);\n\t }\n\t value = this._fromUnits(value);\n\t var setValue = Math.max(value, this._minOutput);\n\t this._events.add({\n\t 'type': Tone.TimelineSignal.Type.Exponential,\n\t 'value': setValue,\n\t 'time': endTime\n\t });\n\t //if the ramped to value is 0, make it go to the min output, and then set to 0.\n\t if (value < this._minOutput) {\n\t this._param.exponentialRampToValueAtTime(this._minOutput, endTime - this.sampleTime);\n\t this.setValueAtTime(0, endTime);\n\t } else {\n\t this._param.exponentialRampToValueAtTime(value, endTime);\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Start exponentially approaching the target value at the given time with\n\t\t * a rate having the given time constant.\n\t\t * @param {number} value \n\t\t * @param {Time} startTime \n\t\t * @param {number} timeConstant \n\t\t * @returns {Tone.TimelineSignal} this \n\t\t */\n\t Tone.TimelineSignal.prototype.setTargetAtTime = function (value, startTime, timeConstant) {\n\t value = this._fromUnits(value);\n\t value = Math.max(this._minOutput, value);\n\t timeConstant = Math.max(this._minOutput, timeConstant);\n\t startTime = this.toSeconds(startTime);\n\t this._events.add({\n\t 'type': Tone.TimelineSignal.Type.Target,\n\t 'value': value,\n\t 'time': startTime,\n\t 'constant': timeConstant\n\t });\n\t this._param.setTargetAtTime(value, startTime, timeConstant);\n\t return this;\n\t };\n\t /**\n\t\t * Set an array of arbitrary values starting at the given time for the given duration.\n\t\t * @param {Float32Array} values \n\t\t * @param {Time} startTime \n\t\t * @param {Time} duration\n\t\t * @param {NormalRange} [scaling=1] If the values in the curve should be scaled by some value\n\t\t * @returns {Tone.TimelineSignal} this \n\t\t */\n\t Tone.TimelineSignal.prototype.setValueCurveAtTime = function (values, startTime, duration, scaling) {\n\t scaling = this.defaultArg(scaling, 1);\n\t //copy the array\n\t var floats = new Array(values.length);\n\t for (var i = 0; i < floats.length; i++) {\n\t floats[i] = this._fromUnits(values[i]) * scaling;\n\t }\n\t startTime = this.toSeconds(startTime);\n\t duration = this.toSeconds(duration);\n\t this._events.add({\n\t 'type': Tone.TimelineSignal.Type.Curve,\n\t 'value': floats,\n\t 'time': startTime,\n\t 'duration': duration\n\t });\n\t //set the first value\n\t this._param.setValueAtTime(floats[0], startTime);\n\t //schedule a lienar ramp for each of the segments\n\t for (var j = 1; j < floats.length; j++) {\n\t var segmentTime = startTime + j / (floats.length - 1) * duration;\n\t this._param.linearRampToValueAtTime(floats[j], segmentTime);\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Cancels all scheduled parameter changes with times greater than or \n\t\t * equal to startTime.\n\t\t * \n\t\t * @param {Time} startTime\n\t\t * @returns {Tone.TimelineSignal} this\n\t\t */\n\t Tone.TimelineSignal.prototype.cancelScheduledValues = function (after) {\n\t after = this.toSeconds(after);\n\t this._events.cancel(after);\n\t this._param.cancelScheduledValues(after);\n\t return this;\n\t };\n\t /**\n\t\t * Sets the computed value at the given time. This provides\n\t\t * a point from which a linear or exponential curve\n\t\t * can be scheduled after. Will cancel events after \n\t\t * the given time and shorten the currently scheduled\n\t\t * linear or exponential ramp so that it ends at `time` .\n\t\t * This is to avoid discontinuities and clicks in envelopes. \n\t\t * @param {Time} time When to set the ramp point\n\t\t * @returns {Tone.TimelineSignal} this\n\t\t */\n\t Tone.TimelineSignal.prototype.setRampPoint = function (time) {\n\t time = this.toSeconds(time);\n\t //get the value at the given time\n\t var val = this._toUnits(this.getValueAtTime(time));\n\t //if there is an event at the given time\n\t //and that even is not a \"set\"\n\t var before = this._searchBefore(time);\n\t if (before && before.time === time) {\n\t //remove everything after\n\t this.cancelScheduledValues(time + this.sampleTime);\n\t } else if (before && before.type === Tone.TimelineSignal.Type.Curve && before.time + before.duration > time) {\n\t //if the curve is still playing\n\t //cancel the curve\n\t this.cancelScheduledValues(time);\n\t this.linearRampToValueAtTime(val, time);\n\t } else {\n\t //reschedule the next event to end at the given time\n\t var after = this._searchAfter(time);\n\t if (after) {\n\t //cancel the next event(s)\n\t this.cancelScheduledValues(time);\n\t if (after.type === Tone.TimelineSignal.Type.Linear) {\n\t this.linearRampToValueAtTime(val, time);\n\t } else if (after.type === Tone.TimelineSignal.Type.Exponential) {\n\t this.exponentialRampToValueAtTime(val, time);\n\t }\n\t }\n\t this.setValueAtTime(val, time);\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Do a linear ramp to the given value between the start and finish times.\n\t\t * @param {Number} value The value to ramp to.\n\t\t * @param {Time} start The beginning anchor point to do the linear ramp\n\t\t * @param {Time} finish The ending anchor point by which the value of\n\t\t * the signal will equal the given value.\n\t\t * @returns {Tone.TimelineSignal} this\n\t\t */\n\t Tone.TimelineSignal.prototype.linearRampToValueBetween = function (value, start, finish) {\n\t this.setRampPoint(start);\n\t this.linearRampToValueAtTime(value, finish);\n\t return this;\n\t };\n\t /**\n\t\t * Do a exponential ramp to the given value between the start and finish times.\n\t\t * @param {Number} value The value to ramp to.\n\t\t * @param {Time} start The beginning anchor point to do the exponential ramp\n\t\t * @param {Time} finish The ending anchor point by which the value of\n\t\t * the signal will equal the given value.\n\t\t * @returns {Tone.TimelineSignal} this\n\t\t */\n\t Tone.TimelineSignal.prototype.exponentialRampToValueBetween = function (value, start, finish) {\n\t this.setRampPoint(start);\n\t this.exponentialRampToValueAtTime(value, finish);\n\t return this;\n\t };\n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tGETTING SCHEDULED VALUES\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * Returns the value before or equal to the given time\n\t\t * @param {Number} time The time to query\n\t\t * @return {Object} The event at or before the given time.\n\t\t * @private\n\t\t */\n\t Tone.TimelineSignal.prototype._searchBefore = function (time) {\n\t return this._events.get(time);\n\t };\n\t /**\n\t\t * The event after the given time\n\t\t * @param {Number} time The time to query.\n\t\t * @return {Object} The next event after the given time\n\t\t * @private\n\t\t */\n\t Tone.TimelineSignal.prototype._searchAfter = function (time) {\n\t return this._events.getAfter(time);\n\t };\n\t /**\n\t\t * Get the scheduled value at the given time. This will\n\t\t * return the unconverted (raw) value.\n\t\t * @param {Number} time The time in seconds.\n\t\t * @return {Number} The scheduled value at the given time.\n\t\t */\n\t Tone.TimelineSignal.prototype.getValueAtTime = function (time) {\n\t time = this.toSeconds(time);\n\t var after = this._searchAfter(time);\n\t var before = this._searchBefore(time);\n\t var value = this._initial;\n\t //if it was set by\n\t if (before === null) {\n\t value = this._initial;\n\t } else if (before.type === Tone.TimelineSignal.Type.Target) {\n\t var previous = this._events.getBefore(before.time);\n\t var previouVal;\n\t if (previous === null) {\n\t previouVal = this._initial;\n\t } else {\n\t previouVal = previous.value;\n\t }\n\t value = this._exponentialApproach(before.time, previouVal, before.value, before.constant, time);\n\t } else if (before.type === Tone.TimelineSignal.Type.Curve) {\n\t value = this._curveInterpolate(before.time, before.value, before.duration, time);\n\t } else if (after === null) {\n\t value = before.value;\n\t } else if (after.type === Tone.TimelineSignal.Type.Linear) {\n\t value = this._linearInterpolate(before.time, before.value, after.time, after.value, time);\n\t } else if (after.type === Tone.TimelineSignal.Type.Exponential) {\n\t value = this._exponentialInterpolate(before.time, before.value, after.time, after.value, time);\n\t } else {\n\t value = before.value;\n\t }\n\t return value;\n\t };\n\t /**\n\t\t * When signals connect to other signals or AudioParams, \n\t\t * they take over the output value of that signal or AudioParam. \n\t\t * For all other nodes, the behavior is the same as a default <code>connect</code>. \n\t\t *\n\t\t * @override\n\t\t * @param {AudioParam|AudioNode|Tone.Signal|Tone} node \n\t\t * @param {number} [outputNumber=0] The output number to connect from.\n\t\t * @param {number} [inputNumber=0] The input number to connect to.\n\t\t * @returns {Tone.TimelineSignal} this\n\t\t * @method\n\t\t */\n\t Tone.TimelineSignal.prototype.connect = Tone.SignalBase.prototype.connect;\n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tAUTOMATION CURVE CALCULATIONS\n\t //\tMIT License, copyright (c) 2014 Jordan Santell\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * Calculates the the value along the curve produced by setTargetAtTime\n\t\t * @private\n\t\t */\n\t Tone.TimelineSignal.prototype._exponentialApproach = function (t0, v0, v1, timeConstant, t) {\n\t return v1 + (v0 - v1) * Math.exp(-(t - t0) / timeConstant);\n\t };\n\t /**\n\t\t * Calculates the the value along the curve produced by linearRampToValueAtTime\n\t\t * @private\n\t\t */\n\t Tone.TimelineSignal.prototype._linearInterpolate = function (t0, v0, t1, v1, t) {\n\t return v0 + (v1 - v0) * ((t - t0) / (t1 - t0));\n\t };\n\t /**\n\t\t * Calculates the the value along the curve produced by exponentialRampToValueAtTime\n\t\t * @private\n\t\t */\n\t Tone.TimelineSignal.prototype._exponentialInterpolate = function (t0, v0, t1, v1, t) {\n\t v0 = Math.max(this._minOutput, v0);\n\t return v0 * Math.pow(v1 / v0, (t - t0) / (t1 - t0));\n\t };\n\t /**\n\t\t * Calculates the the value along the curve produced by setValueCurveAtTime\n\t\t * @private\n\t\t */\n\t Tone.TimelineSignal.prototype._curveInterpolate = function (start, curve, duration, time) {\n\t var len = curve.length;\n\t // If time is after duration, return the last curve value\n\t if (time >= start + duration) {\n\t return curve[len - 1];\n\t } else if (time <= start) {\n\t return curve[0];\n\t } else {\n\t var progress = (time - start) / duration;\n\t var lowerIndex = Math.floor((len - 1) * progress);\n\t var upperIndex = Math.ceil((len - 1) * progress);\n\t var lowerVal = curve[lowerIndex];\n\t var upperVal = curve[upperIndex];\n\t if (upperIndex === lowerIndex) {\n\t return lowerVal;\n\t } else {\n\t return this._linearInterpolate(lowerIndex, lowerVal, upperIndex, upperVal, progress * (len - 1));\n\t }\n\t }\n\t };\n\t /**\n\t\t * Clean up.\n\t\t * @return {Tone.TimelineSignal} this\n\t\t */\n\t Tone.TimelineSignal.prototype.dispose = function () {\n\t Tone.Signal.prototype.dispose.call(this);\n\t Tone.Param.prototype.dispose.call(this);\n\t this._events.dispose();\n\t this._events = null;\n\t };\n\t return Tone.TimelineSignal;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Pow applies an exponent to the incoming signal. The incoming signal\n\t\t * must be AudioRange.\n\t\t *\n\t\t * @extends {Tone.SignalBase}\n\t\t * @constructor\n\t\t * @param {Positive} exp The exponent to apply to the incoming signal, must be at least 2. \n\t\t * @example\n\t\t * var pow = new Tone.Pow(2);\n\t\t * var sig = new Tone.Signal(0.5).connect(pow);\n\t\t * //output of pow is 0.25. \n\t\t */\n\t Tone.Pow = function (exp) {\n\t /**\n\t\t\t * the exponent\n\t\t\t * @private\n\t\t\t * @type {number}\n\t\t\t */\n\t this._exp = this.defaultArg(exp, 1);\n\t /**\n\t\t\t * @type {WaveShaperNode}\n\t\t\t * @private\n\t\t\t */\n\t this._expScaler = this.input = this.output = new Tone.WaveShaper(this._expFunc(this._exp), 8192);\n\t };\n\t Tone.extend(Tone.Pow, Tone.SignalBase);\n\t /**\n\t\t * The value of the exponent.\n\t\t * @memberOf Tone.Pow#\n\t\t * @type {number}\n\t\t * @name value\n\t\t */\n\t Object.defineProperty(Tone.Pow.prototype, 'value', {\n\t get: function () {\n\t return this._exp;\n\t },\n\t set: function (exp) {\n\t this._exp = exp;\n\t this._expScaler.setMap(this._expFunc(this._exp));\n\t }\n\t });\n\t /**\n\t\t * the function which maps the waveshaper\n\t\t * @param {number} exp\n\t\t * @return {function}\n\t\t * @private\n\t\t */\n\t Tone.Pow.prototype._expFunc = function (exp) {\n\t return function (val) {\n\t return Math.pow(Math.abs(val), exp);\n\t };\n\t };\n\t /**\n\t\t * Clean up.\n\t\t * @returns {Tone.Pow} this\n\t\t */\n\t Tone.Pow.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._expScaler.dispose();\n\t this._expScaler = null;\n\t return this;\n\t };\n\t return Tone.Pow;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Envelope is an [ADSR](https://en.wikipedia.org/wiki/Synthesizer#ADSR_envelope)\n\t\t * envelope generator. Tone.Envelope outputs a signal which \n\t\t * can be connected to an AudioParam or Tone.Signal. \n\t\t * <img src=\"https://upload.wikimedia.org/wikipedia/commons/e/ea/ADSR_parameter.svg\">\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone}\n\t\t * @param {Time} [attack] The amount of time it takes for the envelope to go from \n\t\t * 0 to it's maximum value. \n\t\t * @param {Time} [decay]\tThe period of time after the attack that it takes for the envelope\n\t\t * \tto fall to the sustain value. \n\t\t * @param {NormalRange} [sustain]\tThe percent of the maximum value that the envelope rests at until\n\t\t * \tthe release is triggered. \n\t\t * @param {Time} [release]\tThe amount of time after the release is triggered it takes to reach 0. \n\t\t * @example\n\t\t * //an amplitude envelope\n\t\t * var gainNode = Tone.context.createGain();\n\t\t * var env = new Tone.Envelope({\n\t\t * \t\"attack\" : 0.1,\n\t\t * \t\"decay\" : 0.2,\n\t\t * \t\"sustain\" : 1,\n\t\t * \t\"release\" : 0.8,\n\t\t * });\n\t\t * env.connect(gainNode.gain);\n\t\t */\n\t Tone.Envelope = function () {\n\t //get all of the defaults\n\t var options = this.optionsObject(arguments, [\n\t 'attack',\n\t 'decay',\n\t 'sustain',\n\t 'release'\n\t ], Tone.Envelope.defaults);\n\t /** \n\t\t\t * When triggerAttack is called, the attack time is the amount of\n\t\t\t * time it takes for the envelope to reach it's maximum value. \n\t\t\t * @type {Time}\n\t\t\t */\n\t this.attack = options.attack;\n\t /**\n\t\t\t * After the attack portion of the envelope, the value will fall\n\t\t\t * over the duration of the decay time to it's sustain value. \n\t\t\t * @type {Time}\n\t\t\t */\n\t this.decay = options.decay;\n\t /**\n\t\t\t * \tThe sustain value is the value \n\t\t\t * \twhich the envelope rests at after triggerAttack is\n\t\t\t * \tcalled, but before triggerRelease is invoked. \n\t\t\t * @type {NormalRange}\n\t\t\t */\n\t this.sustain = options.sustain;\n\t /**\n\t\t\t * After triggerRelease is called, the envelope's\n\t\t\t * value will fall to it's miminum value over the\n\t\t\t * duration of the release time. \n\t\t\t * @type {Time}\n\t\t\t */\n\t this.release = options.release;\n\t /**\n\t\t\t * the next time the envelope is at standby\n\t\t\t * @type {number}\n\t\t\t * @private\n\t\t\t */\n\t this._attackCurve = 'linear';\n\t /**\n\t\t\t * the next time the envelope is at standby\n\t\t\t * @type {number}\n\t\t\t * @private\n\t\t\t */\n\t this._releaseCurve = 'exponential';\n\t /**\n\t\t\t * the signal\n\t\t\t * @type {Tone.TimelineSignal}\n\t\t\t * @private\n\t\t\t */\n\t this._sig = this.output = new Tone.TimelineSignal();\n\t this._sig.setValueAtTime(0, 0);\n\t //set the attackCurve initially\n\t this.attackCurve = options.attackCurve;\n\t this.releaseCurve = options.releaseCurve;\n\t };\n\t Tone.extend(Tone.Envelope);\n\t /**\n\t\t * the default parameters\n\t\t * @static\n\t\t * @const\n\t\t */\n\t Tone.Envelope.defaults = {\n\t 'attack': 0.01,\n\t 'decay': 0.1,\n\t 'sustain': 0.5,\n\t 'release': 1,\n\t 'attackCurve': 'linear',\n\t 'releaseCurve': 'exponential'\n\t };\n\t /**\n\t\t * Read the current value of the envelope. Useful for \n\t\t * syncronizing visual output to the envelope. \n\t\t * @memberOf Tone.Envelope#\n\t\t * @type {Number}\n\t\t * @name value\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone.Envelope.prototype, 'value', {\n\t get: function () {\n\t return this.getValueAtTime(this.now());\n\t }\n\t });\n\t /**\n\t\t * The shape of the attack. \n\t\t * Can be any of these strings:\n\t\t * <ul>\n\t\t * <li>linear</li>\n\t\t * <li>exponential</li>\n\t\t * <li>sine</li>\n\t\t * <li>cosine</li>\n\t\t * <li>bounce</li>\n\t\t * <li>ripple</li>\n\t\t * <li>step</li>\n\t\t * </ul>\n\t\t * Can also be an array which describes the curve. Values\n\t\t * in the array are evenly subdivided and linearly\n\t\t * interpolated over the duration of the attack. \n\t\t * @memberOf Tone.Envelope#\n\t\t * @type {String|Array}\n\t\t * @name attackCurve\n\t\t * @example\n\t\t * env.attackCurve = \"linear\";\n\t\t * @example\n\t\t * //can also be an array\n\t\t * env.attackCurve = [0, 0.2, 0.3, 0.4, 1]\n\t\t */\n\t Object.defineProperty(Tone.Envelope.prototype, 'attackCurve', {\n\t get: function () {\n\t if (this.isString(this._attackCurve)) {\n\t return this._attackCurve;\n\t } else if (this.isArray(this._attackCurve)) {\n\t //look up the name in the curves array\n\t for (var type in Tone.Envelope.Type) {\n\t if (Tone.Envelope.Type[type].In === this._attackCurve) {\n\t return type;\n\t }\n\t }\n\t //otherwise just return the array\n\t return this._attackCurve;\n\t }\n\t },\n\t set: function (curve) {\n\t //check if it's a valid type\n\t if (Tone.Envelope.Type.hasOwnProperty(curve)) {\n\t var curveDef = Tone.Envelope.Type[curve];\n\t if (this.isObject(curveDef)) {\n\t this._attackCurve = curveDef.In;\n\t } else {\n\t this._attackCurve = curveDef;\n\t }\n\t } else if (this.isArray(curve)) {\n\t this._attackCurve = curve;\n\t } else {\n\t throw new Error('Tone.Envelope: invalid curve: ' + curve);\n\t }\n\t }\n\t });\n\t /**\n\t\t * The shape of the release. See the attack curve types. \n\t\t * @memberOf Tone.Envelope#\n\t\t * @type {String|Array}\n\t\t * @name releaseCurve\n\t\t * @example\n\t\t * env.releaseCurve = \"linear\";\n\t\t */\n\t Object.defineProperty(Tone.Envelope.prototype, 'releaseCurve', {\n\t get: function () {\n\t if (this.isString(this._releaseCurve)) {\n\t return this._releaseCurve;\n\t } else if (this.isArray(this._releaseCurve)) {\n\t //look up the name in the curves array\n\t for (var type in Tone.Envelope.Type) {\n\t if (Tone.Envelope.Type[type].Out === this._releaseCurve) {\n\t return type;\n\t }\n\t }\n\t //otherwise just return the array\n\t return this._releaseCurve;\n\t }\n\t },\n\t set: function (curve) {\n\t //check if it's a valid type\n\t if (Tone.Envelope.Type.hasOwnProperty(curve)) {\n\t var curveDef = Tone.Envelope.Type[curve];\n\t if (this.isObject(curveDef)) {\n\t this._releaseCurve = curveDef.Out;\n\t } else {\n\t this._releaseCurve = curveDef;\n\t }\n\t } else if (this.isArray(curve)) {\n\t this._releaseCurve = curve;\n\t } else {\n\t throw new Error('Tone.Envelope: invalid curve: ' + curve);\n\t }\n\t }\n\t });\n\t /**\n\t\t * Trigger the attack/decay portion of the ADSR envelope. \n\t\t * @param {Time} [time=now] When the attack should start.\n\t\t * @param {NormalRange} [velocity=1] The velocity of the envelope scales the vales.\n\t\t * number between 0-1\n\t\t * @returns {Tone.Envelope} this\n\t\t * @example\n\t\t * //trigger the attack 0.5 seconds from now with a velocity of 0.2\n\t\t * env.triggerAttack(\"+0.5\", 0.2);\n\t\t */\n\t Tone.Envelope.prototype.triggerAttack = function (time, velocity) {\n\t time = this.toSeconds(time);\n\t var originalAttack = this.toSeconds(this.attack);\n\t var attack = originalAttack;\n\t var decay = this.toSeconds(this.decay);\n\t velocity = this.defaultArg(velocity, 1);\n\t //check if it's not a complete attack\n\t var currentValue = this.getValueAtTime(time);\n\t if (currentValue > 0) {\n\t //subtract the current value from the attack time\n\t var attackRate = 1 / attack;\n\t var remainingDistance = 1 - currentValue;\n\t //the attack is now the remaining time\n\t attack = remainingDistance / attackRate;\n\t }\n\t //attack\n\t if (this._attackCurve === 'linear') {\n\t this._sig.linearRampToValue(velocity, attack, time);\n\t } else if (this._attackCurve === 'exponential') {\n\t this._sig.exponentialRampToValue(velocity, attack, time);\n\t } else if (attack > 0) {\n\t this._sig.setRampPoint(time);\n\t var curve = this._attackCurve;\n\t //take only a portion of the curve\n\t if (attack < originalAttack) {\n\t var percentComplete = 1 - attack / originalAttack;\n\t var sliceIndex = Math.floor(percentComplete * this._attackCurve.length);\n\t curve = this._attackCurve.slice(sliceIndex);\n\t //the first index is the current value\n\t curve[0] = currentValue;\n\t }\n\t this._sig.setValueCurveAtTime(curve, time, attack, velocity);\n\t }\n\t //decay\n\t this._sig.exponentialRampToValue(velocity * this.sustain, decay, attack + time);\n\t return this;\n\t };\n\t /**\n\t\t * Triggers the release of the envelope.\n\t\t * @param {Time} [time=now] When the release portion of the envelope should start. \n\t\t * @returns {Tone.Envelope} this\n\t\t * @example\n\t\t * //trigger release immediately\n\t\t * env.triggerRelease();\n\t\t */\n\t Tone.Envelope.prototype.triggerRelease = function (time) {\n\t time = this.toSeconds(time);\n\t var currentValue = this.getValueAtTime(time);\n\t if (currentValue > 0) {\n\t var release = this.toSeconds(this.release);\n\t if (this._releaseCurve === 'linear') {\n\t this._sig.linearRampToValue(0, release, time);\n\t } else if (this._releaseCurve === 'exponential') {\n\t this._sig.exponentialRampToValue(0, release, time);\n\t } else {\n\t var curve = this._releaseCurve;\n\t if (this.isArray(curve)) {\n\t this._sig.setRampPoint(time);\n\t this._sig.setValueCurveAtTime(curve, time, release, currentValue);\n\t }\n\t }\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Get the scheduled value at the given time. This will\n\t\t * return the unconverted (raw) value.\n\t\t * @param {Number} time The time in seconds.\n\t\t * @return {Number} The scheduled value at the given time.\n\t\t */\n\t Tone.Envelope.prototype.getValueAtTime = function (time) {\n\t return this._sig.getValueAtTime(time);\n\t };\n\t /**\n\t\t * triggerAttackRelease is shorthand for triggerAttack, then waiting\n\t\t * some duration, then triggerRelease. \n\t\t * @param {Time} duration The duration of the sustain.\n\t\t * @param {Time} [time=now] When the attack should be triggered.\n\t\t * @param {number} [velocity=1] The velocity of the envelope. \n\t\t * @returns {Tone.Envelope} this\n\t\t * @example\n\t\t * //trigger the attack and then the release after 0.6 seconds.\n\t\t * env.triggerAttackRelease(0.6);\n\t\t */\n\t Tone.Envelope.prototype.triggerAttackRelease = function (duration, time, velocity) {\n\t time = this.toSeconds(time);\n\t this.triggerAttack(time, velocity);\n\t this.triggerRelease(time + this.toSeconds(duration));\n\t return this;\n\t };\n\t /**\n\t\t * Cancels all scheduled envelope changes after the given time.\n\t\t * @param {Time} after\n\t\t * @returns {Tone.Envelope} this\n\t\t */\n\t Tone.Envelope.prototype.cancel = function (after) {\n\t this._sig.cancelScheduledValues(after);\n\t return this;\n\t };\n\t /**\n\t\t * Borrows the connect method from Tone.Signal. \n\t\t * @function\n\t\t * @private\n\t\t */\n\t Tone.Envelope.prototype.connect = Tone.Signal.prototype.connect;\n\t /**\n\t \t * Generate some complex envelope curves. \n\t \t */\n\t (function _createCurves() {\n\t var curveLen = 128;\n\t var i, k;\n\t //cosine curve\n\t var cosineCurve = [];\n\t for (i = 0; i < curveLen; i++) {\n\t cosineCurve[i] = Math.sin(i / (curveLen - 1) * (Math.PI / 2));\n\t }\n\t //ripple curve\n\t var rippleCurve = [];\n\t var rippleCurveFreq = 6.4;\n\t for (i = 0; i < curveLen - 1; i++) {\n\t k = i / (curveLen - 1);\n\t var sineWave = Math.sin(k * (Math.PI * 2) * rippleCurveFreq - Math.PI / 2) + 1;\n\t rippleCurve[i] = sineWave / 10 + k * 0.83;\n\t }\n\t rippleCurve[curveLen - 1] = 1;\n\t //stairs curve\n\t var stairsCurve = [];\n\t var steps = 5;\n\t for (i = 0; i < curveLen; i++) {\n\t stairsCurve[i] = Math.ceil(i / (curveLen - 1) * steps) / steps;\n\t }\n\t //in-out easing curve\n\t var sineCurve = [];\n\t for (i = 0; i < curveLen; i++) {\n\t k = i / (curveLen - 1);\n\t sineCurve[i] = 0.5 * (1 - Math.cos(Math.PI * k));\n\t }\n\t //a bounce curve\n\t var bounceCurve = [];\n\t for (i = 0; i < curveLen; i++) {\n\t k = i / (curveLen - 1);\n\t var freq = Math.pow(k, 3) * 4 + 0.2;\n\t var val = Math.cos(freq * Math.PI * 2 * k);\n\t bounceCurve[i] = Math.abs(val * (1 - k));\n\t }\n\t /**\n\t\t\t * Invert a value curve to make it work for the release\n\t\t\t * @private\n\t\t\t */\n\t function invertCurve(curve) {\n\t var out = new Array(curve.length);\n\t for (var j = 0; j < curve.length; j++) {\n\t out[j] = 1 - curve[j];\n\t }\n\t return out;\n\t }\n\t /**\n\t\t\t * reverse the curve\n\t\t\t * @private\n\t\t\t */\n\t function reverseCurve(curve) {\n\t return curve.slice(0).reverse();\n\t }\n\t /**\n\t\t\t * attack and release curve arrays\n\t\t\t * @type {Object}\n\t\t\t * @private\n\t\t\t */\n\t Tone.Envelope.Type = {\n\t 'linear': 'linear',\n\t 'exponential': 'exponential',\n\t 'bounce': {\n\t In: invertCurve(bounceCurve),\n\t Out: bounceCurve\n\t },\n\t 'cosine': {\n\t In: cosineCurve,\n\t Out: reverseCurve(cosineCurve)\n\t },\n\t 'step': {\n\t In: stairsCurve,\n\t Out: invertCurve(stairsCurve)\n\t },\n\t 'ripple': {\n\t In: rippleCurve,\n\t Out: invertCurve(rippleCurve)\n\t },\n\t 'sine': {\n\t In: sineCurve,\n\t Out: invertCurve(sineCurve)\n\t }\n\t };\n\t }());\n\t /**\n\t\t * Disconnect and dispose.\n\t\t * @returns {Tone.Envelope} this\n\t\t */\n\t Tone.Envelope.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._sig.dispose();\n\t this._sig = null;\n\t this._attackCurve = null;\n\t this._releaseCurve = null;\n\t return this;\n\t };\n\t return Tone.Envelope;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.AmplitudeEnvelope is a Tone.Envelope connected to a gain node. \n\t\t * Unlike Tone.Envelope, which outputs the envelope's value, Tone.AmplitudeEnvelope accepts\n\t\t * an audio signal as the input and will apply the envelope to the amplitude\n\t\t * of the signal. Read more about ADSR Envelopes on [Wikipedia](https://en.wikipedia.org/wiki/Synthesizer#ADSR_envelope).\n\t\t * \n\t\t * @constructor\n\t\t * @extends {Tone.Envelope}\n\t\t * @param {Time|Object} [attack] The amount of time it takes for the envelope to go from \n\t\t * 0 to it's maximum value. \n\t\t * @param {Time} [decay]\tThe period of time after the attack that it takes for the envelope\n\t\t * \tto fall to the sustain value. \n\t\t * @param {NormalRange} [sustain]\tThe percent of the maximum value that the envelope rests at until\n\t\t * \tthe release is triggered. \n\t\t * @param {Time} [release]\tThe amount of time after the release is triggered it takes to reach 0. \n\t\t * @example\n\t\t * var ampEnv = new Tone.AmplitudeEnvelope({\n\t\t * \t\"attack\": 0.1,\n\t\t * \t\"decay\": 0.2,\n\t\t * \t\"sustain\": 1.0,\n\t\t * \t\"release\": 0.8\n\t\t * }).toMaster();\n\t\t * //create an oscillator and connect it\n\t\t * var osc = new Tone.Oscillator().connect(ampEnv).start();\n\t\t * //trigger the envelopes attack and release \"8t\" apart\n\t\t * ampEnv.triggerAttackRelease(\"8t\");\n\t\t */\n\t Tone.AmplitudeEnvelope = function () {\n\t Tone.Envelope.apply(this, arguments);\n\t /**\n\t\t\t * the input node\n\t\t\t * @type {GainNode}\n\t\t\t * @private\n\t\t\t */\n\t this.input = this.output = new Tone.Gain();\n\t this._sig.connect(this.output.gain);\n\t };\n\t Tone.extend(Tone.AmplitudeEnvelope, Tone.Envelope);\n\t /**\n\t\t * Clean up\n\t\t * @return {Tone.AmplitudeEnvelope} this\n\t\t */\n\t Tone.AmplitudeEnvelope.prototype.dispose = function () {\n\t this.input.dispose();\n\t this.input = null;\n\t Tone.Envelope.prototype.dispose.call(this);\n\t return this;\n\t };\n\t return Tone.AmplitudeEnvelope;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * AnalyserNode.getFloatTimeDomainData polyfill\n\t\t * @private\n\t\t */\n\t if (window.AnalyserNode && !AnalyserNode.prototype.getFloatTimeDomainData) {\n\t //referenced https://github.com/mohayonao/get-float-time-domain-data \n\t AnalyserNode.prototype.getFloatTimeDomainData = function (array) {\n\t var uint8 = new Uint8Array(array.length);\n\t this.getByteTimeDomainData(uint8);\n\t for (var i = 0; i < uint8.length; i++) {\n\t array[i] = (uint8[i] - 128) / 128;\n\t }\n\t };\n\t }\n\t /**\n\t\t * @class Wrapper around the native Web Audio's \n\t\t * [AnalyserNode](http://webaudio.github.io/web-audio-api/#idl-def-AnalyserNode).\n\t\t * Extracts FFT or Waveform data from the incoming signal.\n\t\t * @extends {Tone}\n\t\t * @param {String=} type The return type of the analysis, either \"fft\", or \"waveform\". \n\t\t * @param {Number=} size The size of the FFT. Value must be a power of \n\t\t * two in the range 32 to 32768.\n\t\t */\n\t Tone.Analyser = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'type',\n\t 'size'\n\t ], Tone.Analyser.defaults);\n\t /**\n\t\t\t * The analyser node.\n\t\t\t * @private\n\t\t\t * @type {AnalyserNode}\n\t\t\t */\n\t this._analyser = this.input = this.output = this.context.createAnalyser();\n\t /**\n\t\t\t * The analysis type\n\t\t\t * @type {String}\n\t\t\t * @private\n\t\t\t */\n\t this._type = options.type;\n\t /**\n\t\t\t * The return type of the analysis\n\t\t\t * @type {String}\n\t\t\t * @private\n\t\t\t */\n\t this._returnType = options.returnType;\n\t /**\n\t\t\t * The buffer that the FFT data is written to\n\t\t\t * @type {TypedArray}\n\t\t\t * @private\n\t\t\t */\n\t this._buffer = null;\n\t //set the values initially\n\t this.size = options.size;\n\t this.type = options.type;\n\t this.returnType = options.returnType;\n\t this.minDecibels = options.minDecibels;\n\t this.maxDecibels = options.maxDecibels;\n\t };\n\t Tone.extend(Tone.Analyser);\n\t /**\n\t\t * The default values.\n\t\t * @type {Object}\n\t\t * @const\n\t\t */\n\t Tone.Analyser.defaults = {\n\t 'size': 1024,\n\t 'returnType': 'byte',\n\t 'type': 'fft',\n\t 'smoothing': 0.8,\n\t 'maxDecibels': -30,\n\t 'minDecibels': -100\n\t };\n\t /**\n\t\t * Possible return types of Tone.Analyser.analyse()\n\t\t * @enum {String}\n\t\t */\n\t Tone.Analyser.Type = {\n\t Waveform: 'waveform',\n\t FFT: 'fft'\n\t };\n\t /**\n\t\t * Possible return types of Tone.Analyser.analyse(). \n\t\t * byte values are between [0,255]. float values are between \n\t\t * [-1, 1] when the type is set to \"waveform\" and between \n\t\t * [minDecibels,maxDecibels] when the type is \"fft\".\n\t\t * @enum {String}\n\t\t */\n\t Tone.Analyser.ReturnType = {\n\t Byte: 'byte',\n\t Float: 'float'\n\t };\n\t /**\n\t\t * Run the analysis given the current settings and return the \n\t\t * result as a TypedArray. \n\t\t * @returns {TypedArray}\n\t\t */\n\t Tone.Analyser.prototype.analyse = function () {\n\t if (this._type === Tone.Analyser.Type.FFT) {\n\t if (this._returnType === Tone.Analyser.ReturnType.Byte) {\n\t this._analyser.getByteFrequencyData(this._buffer);\n\t } else {\n\t this._analyser.getFloatFrequencyData(this._buffer);\n\t }\n\t } else if (this._type === Tone.Analyser.Type.Waveform) {\n\t if (this._returnType === Tone.Analyser.ReturnType.Byte) {\n\t this._analyser.getByteTimeDomainData(this._buffer);\n\t } else {\n\t this._analyser.getFloatTimeDomainData(this._buffer);\n\t }\n\t }\n\t return this._buffer;\n\t };\n\t /**\n\t\t * The size of analysis. This must be a power of two in the range 32 to 32768.\n\t\t * @memberOf Tone.Analyser#\n\t\t * @type {Number}\n\t\t * @name size\n\t\t */\n\t Object.defineProperty(Tone.Analyser.prototype, 'size', {\n\t get: function () {\n\t return this._analyser.frequencyBinCount;\n\t },\n\t set: function (size) {\n\t this._analyser.fftSize = size * 2;\n\t this.type = this._type;\n\t }\n\t });\n\t /**\n\t\t * The return type of Tone.Analyser.analyse(), either \"byte\" or \"float\". \n\t\t * When the type is set to \"byte\" the range of values returned in the array\n\t\t * are between 0-255. \"float\" values are between \n\t\t * [-1, 1] when the type is set to \"waveform\" and between \n\t\t * [minDecibels,maxDecibels] when the type is \"fft\".\n\t\t * @memberOf Tone.Analyser#\n\t\t * @type {String}\n\t\t * @name type\n\t\t */\n\t Object.defineProperty(Tone.Analyser.prototype, 'returnType', {\n\t get: function () {\n\t return this._returnType;\n\t },\n\t set: function (type) {\n\t if (type === Tone.Analyser.ReturnType.Byte) {\n\t this._buffer = new Uint8Array(this._analyser.frequencyBinCount);\n\t } else if (type === Tone.Analyser.ReturnType.Float) {\n\t this._buffer = new Float32Array(this._analyser.frequencyBinCount);\n\t } else {\n\t throw new TypeError('Tone.Analayser: invalid return type: ' + type);\n\t }\n\t this._returnType = type;\n\t }\n\t });\n\t /**\n\t\t * The analysis function returned by Tone.Analyser.analyse(), either \"fft\" or \"waveform\". \n\t\t * @memberOf Tone.Analyser#\n\t\t * @type {String}\n\t\t * @name type\n\t\t */\n\t Object.defineProperty(Tone.Analyser.prototype, 'type', {\n\t get: function () {\n\t return this._type;\n\t },\n\t set: function (type) {\n\t if (type !== Tone.Analyser.Type.Waveform && type !== Tone.Analyser.Type.FFT) {\n\t throw new TypeError('Tone.Analyser: invalid type: ' + type);\n\t }\n\t this._type = type;\n\t }\n\t });\n\t /**\n\t\t * 0 represents no time averaging with the last analysis frame.\n\t\t * @memberOf Tone.Analyser#\n\t\t * @type {NormalRange}\n\t\t * @name smoothing\n\t\t */\n\t Object.defineProperty(Tone.Analyser.prototype, 'smoothing', {\n\t get: function () {\n\t return this._analyser.smoothingTimeConstant;\n\t },\n\t set: function (val) {\n\t this._analyser.smoothingTimeConstant = val;\n\t }\n\t });\n\t /**\n\t\t * The smallest decibel value which is analysed by the FFT. \n\t\t * @memberOf Tone.Analyser#\n\t\t * @type {Decibels}\n\t\t * @name minDecibels\n\t\t */\n\t Object.defineProperty(Tone.Analyser.prototype, 'minDecibels', {\n\t get: function () {\n\t return this._analyser.minDecibels;\n\t },\n\t set: function (val) {\n\t this._analyser.minDecibels = val;\n\t }\n\t });\n\t /**\n\t\t * The largest decibel value which is analysed by the FFT. \n\t\t * @memberOf Tone.Analyser#\n\t\t * @type {Decibels}\n\t\t * @name maxDecibels\n\t\t */\n\t Object.defineProperty(Tone.Analyser.prototype, 'maxDecibels', {\n\t get: function () {\n\t return this._analyser.maxDecibels;\n\t },\n\t set: function (val) {\n\t this._analyser.maxDecibels = val;\n\t }\n\t });\n\t /**\n\t\t * Clean up.\n\t\t * @return {Tone.Analyser} this\n\t\t */\n\t Tone.Analyser.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._analyser.disconnect();\n\t this._analyser = null;\n\t this._buffer = null;\n\t };\n\t return Tone.Analyser;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Compressor is a thin wrapper around the Web Audio \n\t\t * [DynamicsCompressorNode](http://webaudio.github.io/web-audio-api/#the-dynamicscompressornode-interface).\n\t\t * Compression reduces the volume of loud sounds or amplifies quiet sounds \n\t\t * by narrowing or \"compressing\" an audio signal's dynamic range. \n\t\t * Read more on [Wikipedia](https://en.wikipedia.org/wiki/Dynamic_range_compression).\n\t\t *\n\t\t * @extends {Tone}\n\t\t * @constructor\n\t\t * @param {Decibels|Object} [threshold] The value above which the compression starts to be applied.\n\t\t * @param {Positive} [ratio] The gain reduction ratio.\n\t\t * @example\n\t\t * var comp = new Tone.Compressor(-30, 3);\n\t\t */\n\t Tone.Compressor = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'threshold',\n\t 'ratio'\n\t ], Tone.Compressor.defaults);\n\t /**\n\t\t\t * the compressor node\n\t\t\t * @type {DynamicsCompressorNode}\n\t\t\t * @private\n\t\t\t */\n\t this._compressor = this.input = this.output = this.context.createDynamicsCompressor();\n\t /**\n\t\t\t * the threshold vaue\n\t\t\t * @type {Decibels}\n\t\t\t * @signal\n\t\t\t */\n\t this.threshold = new Tone.Param({\n\t 'param': this._compressor.threshold,\n\t 'units': Tone.Type.Decibels,\n\t 'convert': false\n\t });\n\t /**\n\t\t\t * The attack parameter\n\t\t\t * @type {Time}\n\t\t\t * @signal\n\t\t\t */\n\t this.attack = new Tone.Param(this._compressor.attack, Tone.Type.Time);\n\t /**\n\t\t\t * The release parameter\n\t\t\t * @type {Time}\n\t\t\t * @signal\n\t\t\t */\n\t this.release = new Tone.Param(this._compressor.release, Tone.Type.Time);\n\t /**\n\t\t\t * The knee parameter\n\t\t\t * @type {Decibels}\n\t\t\t * @signal\n\t\t\t */\n\t this.knee = new Tone.Param({\n\t 'param': this._compressor.knee,\n\t 'units': Tone.Type.Decibels,\n\t 'convert': false\n\t });\n\t /**\n\t\t\t * The ratio value\n\t\t\t * @type {Number}\n\t\t\t * @signal\n\t\t\t */\n\t this.ratio = new Tone.Param({\n\t 'param': this._compressor.ratio,\n\t 'convert': false\n\t });\n\t //set the defaults\n\t this._readOnly([\n\t 'knee',\n\t 'release',\n\t 'attack',\n\t 'ratio',\n\t 'threshold'\n\t ]);\n\t this.set(options);\n\t };\n\t Tone.extend(Tone.Compressor);\n\t /**\n\t\t * @static\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.Compressor.defaults = {\n\t 'ratio': 12,\n\t 'threshold': -24,\n\t 'release': 0.25,\n\t 'attack': 0.003,\n\t 'knee': 30\n\t };\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.Compressor} this\n\t\t */\n\t Tone.Compressor.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._writable([\n\t 'knee',\n\t 'release',\n\t 'attack',\n\t 'ratio',\n\t 'threshold'\n\t ]);\n\t this._compressor.disconnect();\n\t this._compressor = null;\n\t this.attack.dispose();\n\t this.attack = null;\n\t this.release.dispose();\n\t this.release = null;\n\t this.threshold.dispose();\n\t this.threshold = null;\n\t this.ratio.dispose();\n\t this.ratio = null;\n\t this.knee.dispose();\n\t this.knee = null;\n\t return this;\n\t };\n\t return Tone.Compressor;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Add a signal and a number or two signals. When no value is\n\t\t * passed into the constructor, Tone.Add will sum <code>input[0]</code>\n\t\t * and <code>input[1]</code>. If a value is passed into the constructor, \n\t\t * the it will be added to the input.\n\t\t * \n\t\t * @constructor\n\t\t * @extends {Tone.Signal}\n\t\t * @param {number=} value If no value is provided, Tone.Add will sum the first\n\t\t * and second inputs. \n\t\t * @example\n\t\t * var signal = new Tone.Signal(2);\n\t\t * var add = new Tone.Add(2);\n\t\t * signal.connect(add);\n\t\t * //the output of add equals 4\n\t\t * @example\n\t\t * //if constructed with no arguments\n\t\t * //it will add the first and second inputs\n\t\t * var add = new Tone.Add();\n\t\t * var sig0 = new Tone.Signal(3).connect(add, 0, 0);\n\t\t * var sig1 = new Tone.Signal(4).connect(add, 0, 1);\n\t\t * //the output of add equals 7. \n\t\t */\n\t Tone.Add = function (value) {\n\t this.createInsOuts(2, 0);\n\t /**\n\t\t\t * the summing node\n\t\t\t * @type {GainNode}\n\t\t\t * @private\n\t\t\t */\n\t this._sum = this.input[0] = this.input[1] = this.output = new Tone.Gain();\n\t /**\n\t\t\t * @private\n\t\t\t * @type {Tone.Signal}\n\t\t\t */\n\t this._param = this.input[1] = new Tone.Signal(value);\n\t this._param.connect(this._sum);\n\t };\n\t Tone.extend(Tone.Add, Tone.Signal);\n\t /**\n\t\t * Clean up.\n\t\t * @returns {Tone.Add} this\n\t\t */\n\t Tone.Add.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._sum.dispose();\n\t this._sum = null;\n\t this._param.dispose();\n\t this._param = null;\n\t return this;\n\t };\n\t return Tone.Add;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Multiply two incoming signals. Or, if a number is given in the constructor, \n\t\t * multiplies the incoming signal by that value. \n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.Signal}\n\t\t * @param {number=} value Constant value to multiple. If no value is provided,\n\t\t * it will return the product of the first and second inputs\n\t\t * @example\n\t\t * var mult = new Tone.Multiply();\n\t\t * var sigA = new Tone.Signal(3);\n\t\t * var sigB = new Tone.Signal(4);\n\t\t * sigA.connect(mult, 0, 0);\n\t\t * sigB.connect(mult, 0, 1);\n\t\t * //output of mult is 12.\n\t\t * @example\n\t\t * var mult = new Tone.Multiply(10);\n\t\t * var sig = new Tone.Signal(2).connect(mult);\n\t\t * //the output of mult is 20. \n\t\t */\n\t Tone.Multiply = function (value) {\n\t this.createInsOuts(2, 0);\n\t /**\n\t\t\t * the input node is the same as the output node\n\t\t\t * it is also the GainNode which handles the scaling of incoming signal\n\t\t\t * \n\t\t\t * @type {GainNode}\n\t\t\t * @private\n\t\t\t */\n\t this._mult = this.input[0] = this.output = new Tone.Gain();\n\t /**\n\t\t\t * the scaling parameter\n\t\t\t * @type {AudioParam}\n\t\t\t * @private\n\t\t\t */\n\t this._param = this.input[1] = this.output.gain;\n\t this._param.value = this.defaultArg(value, 0);\n\t };\n\t Tone.extend(Tone.Multiply, Tone.Signal);\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.Multiply} this\n\t\t */\n\t Tone.Multiply.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._mult.dispose();\n\t this._mult = null;\n\t this._param = null;\n\t return this;\n\t };\n\t return Tone.Multiply;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Negate the incoming signal. i.e. an input signal of 10 will output -10\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.SignalBase}\n\t\t * @example\n\t\t * var neg = new Tone.Negate();\n\t\t * var sig = new Tone.Signal(-2).connect(neg);\n\t\t * //output of neg is positive 2. \n\t\t */\n\t Tone.Negate = function () {\n\t /**\n\t\t\t * negation is done by multiplying by -1\n\t\t\t * @type {Tone.Multiply}\n\t\t\t * @private\n\t\t\t */\n\t this._multiply = this.input = this.output = new Tone.Multiply(-1);\n\t };\n\t Tone.extend(Tone.Negate, Tone.SignalBase);\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.Negate} this\n\t\t */\n\t Tone.Negate.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._multiply.dispose();\n\t this._multiply = null;\n\t return this;\n\t };\n\t return Tone.Negate;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Subtract the signal connected to <code>input[1]</code> from the signal connected \n\t\t * to <code>input[0]</code>. If an argument is provided in the constructor, the \n\t\t * signals <code>.value</code> will be subtracted from the incoming signal.\n\t\t *\n\t\t * @extends {Tone.Signal}\n\t\t * @constructor\n\t\t * @param {number=} value The value to subtract from the incoming signal. If the value\n\t\t * is omitted, it will subtract the second signal from the first.\n\t\t * @example\n\t\t * var sub = new Tone.Subtract(1);\n\t\t * var sig = new Tone.Signal(4).connect(sub);\n\t\t * //the output of sub is 3. \n\t\t * @example\n\t\t * var sub = new Tone.Subtract();\n\t\t * var sigA = new Tone.Signal(10);\n\t\t * var sigB = new Tone.Signal(2.5);\n\t\t * sigA.connect(sub, 0, 0);\n\t\t * sigB.connect(sub, 0, 1);\n\t\t * //output of sub is 7.5\n\t\t */\n\t Tone.Subtract = function (value) {\n\t this.createInsOuts(2, 0);\n\t /**\n\t\t\t * the summing node\n\t\t\t * @type {GainNode}\n\t\t\t * @private\n\t\t\t */\n\t this._sum = this.input[0] = this.output = new Tone.Gain();\n\t /**\n\t\t\t * negate the input of the second input before connecting it\n\t\t\t * to the summing node.\n\t\t\t * @type {Tone.Negate}\n\t\t\t * @private\n\t\t\t */\n\t this._neg = new Tone.Negate();\n\t /**\n\t\t\t * the node where the value is set\n\t\t\t * @private\n\t\t\t * @type {Tone.Signal}\n\t\t\t */\n\t this._param = this.input[1] = new Tone.Signal(value);\n\t this._param.chain(this._neg, this._sum);\n\t };\n\t Tone.extend(Tone.Subtract, Tone.Signal);\n\t /**\n\t\t * Clean up.\n\t\t * @returns {Tone.SignalBase} this\n\t\t */\n\t Tone.Subtract.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._neg.dispose();\n\t this._neg = null;\n\t this._sum.disconnect();\n\t this._sum = null;\n\t this._param.dispose();\n\t this._param = null;\n\t return this;\n\t };\n\t return Tone.Subtract;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class GreaterThanZero outputs 1 when the input is strictly greater than zero\n\t\t * \n\t\t * @constructor\n\t\t * @extends {Tone.SignalBase}\n\t\t * @example\n\t\t * var gt0 = new Tone.GreaterThanZero();\n\t\t * var sig = new Tone.Signal(0.01).connect(gt0);\n\t\t * //the output of gt0 is 1. \n\t\t * sig.value = 0;\n\t\t * //the output of gt0 is 0. \n\t\t */\n\t Tone.GreaterThanZero = function () {\n\t /**\n\t\t\t * @type {Tone.WaveShaper}\n\t\t\t * @private\n\t\t\t */\n\t this._thresh = this.output = new Tone.WaveShaper(function (val) {\n\t if (val <= 0) {\n\t return 0;\n\t } else {\n\t return 1;\n\t }\n\t }, 127);\n\t /**\n\t\t\t * scale the first thresholded signal by a large value.\n\t\t\t * this will help with values which are very close to 0\n\t\t\t * @type {Tone.Multiply}\n\t\t\t * @private\n\t\t\t */\n\t this._scale = this.input = new Tone.Multiply(10000);\n\t //connections\n\t this._scale.connect(this._thresh);\n\t };\n\t Tone.extend(Tone.GreaterThanZero, Tone.SignalBase);\n\t /**\n\t\t * dispose method\n\t\t * @returns {Tone.GreaterThanZero} this\n\t\t */\n\t Tone.GreaterThanZero.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._scale.dispose();\n\t this._scale = null;\n\t this._thresh.dispose();\n\t this._thresh = null;\n\t return this;\n\t };\n\t return Tone.GreaterThanZero;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Output 1 if the signal is greater than the value, otherwise outputs 0.\n\t\t * can compare two signals or a signal and a number. \n\t\t * \n\t\t * @constructor\n\t\t * @extends {Tone.Signal}\n\t\t * @param {number} [value=0] the value to compare to the incoming signal\n\t\t * @example\n\t\t * var gt = new Tone.GreaterThan(2);\n\t\t * var sig = new Tone.Signal(4).connect(gt);\n\t\t * //output of gt is equal 1. \n\t\t */\n\t Tone.GreaterThan = function (value) {\n\t this.createInsOuts(2, 0);\n\t /**\n\t\t\t * subtract the amount from the incoming signal\n\t\t\t * @type {Tone.Subtract}\n\t\t\t * @private\n\t\t\t */\n\t this._param = this.input[0] = new Tone.Subtract(value);\n\t this.input[1] = this._param.input[1];\n\t /**\n\t\t\t * compare that amount to zero\n\t\t\t * @type {Tone.GreaterThanZero}\n\t\t\t * @private\n\t\t\t */\n\t this._gtz = this.output = new Tone.GreaterThanZero();\n\t //connect\n\t this._param.connect(this._gtz);\n\t };\n\t Tone.extend(Tone.GreaterThan, Tone.Signal);\n\t /**\n\t\t * dispose method\n\t\t * @returns {Tone.GreaterThan} this\n\t\t */\n\t Tone.GreaterThan.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._param.dispose();\n\t this._param = null;\n\t this._gtz.dispose();\n\t this._gtz = null;\n\t return this;\n\t };\n\t return Tone.GreaterThan;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Return the absolute value of an incoming signal. \n\t\t * \n\t\t * @constructor\n\t\t * @extends {Tone.SignalBase}\n\t\t * @example\n\t\t * var signal = new Tone.Signal(-1);\n\t\t * var abs = new Tone.Abs();\n\t\t * signal.connect(abs);\n\t\t * //the output of abs is 1. \n\t\t */\n\t Tone.Abs = function () {\n\t /**\n\t\t\t * @type {Tone.LessThan}\n\t\t\t * @private\n\t\t\t */\n\t this._abs = this.input = this.output = new Tone.WaveShaper(function (val) {\n\t if (val === 0) {\n\t return 0;\n\t } else {\n\t return Math.abs(val);\n\t }\n\t }, 127);\n\t };\n\t Tone.extend(Tone.Abs, Tone.SignalBase);\n\t /**\n\t\t * dispose method\n\t\t * @returns {Tone.Abs} this\n\t\t */\n\t Tone.Abs.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._abs.dispose();\n\t this._abs = null;\n\t return this;\n\t };\n\t return Tone.Abs;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Signal-rate modulo operator. Only works in AudioRange [-1, 1] and for modulus\n\t\t * values in the NormalRange. \n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.SignalBase}\n\t\t * @param {NormalRange} modulus The modulus to apply.\n\t\t * @example\n\t\t * var mod = new Tone.Modulo(0.2)\n\t\t * var sig = new Tone.Signal(0.5).connect(mod);\n\t\t * //mod outputs 0.1\n\t\t */\n\t Tone.Modulo = function (modulus) {\n\t this.createInsOuts(1, 0);\n\t /**\n\t\t\t * A waveshaper gets the integer multiple of \n\t\t\t * the input signal and the modulus.\n\t\t\t * @private\n\t\t\t * @type {Tone.WaveShaper}\n\t\t\t */\n\t this._shaper = new Tone.WaveShaper(Math.pow(2, 16));\n\t /**\n\t\t\t * the integer multiple is multiplied by the modulus\n\t\t\t * @type {Tone.Multiply}\n\t\t\t * @private\n\t\t\t */\n\t this._multiply = new Tone.Multiply();\n\t /**\n\t\t\t * and subtracted from the input signal\n\t\t\t * @type {Tone.Subtract}\n\t\t\t * @private\n\t\t\t */\n\t this._subtract = this.output = new Tone.Subtract();\n\t /**\n\t\t\t * the modulus signal\n\t\t\t * @type {Tone.Signal}\n\t\t\t * @private\n\t\t\t */\n\t this._modSignal = new Tone.Signal(modulus);\n\t //connections\n\t this.input.fan(this._shaper, this._subtract);\n\t this._modSignal.connect(this._multiply, 0, 0);\n\t this._shaper.connect(this._multiply, 0, 1);\n\t this._multiply.connect(this._subtract, 0, 1);\n\t this._setWaveShaper(modulus);\n\t };\n\t Tone.extend(Tone.Modulo, Tone.SignalBase);\n\t /**\n\t\t * @param {number} mod the modulus to apply\n\t\t * @private\n\t\t */\n\t Tone.Modulo.prototype._setWaveShaper = function (mod) {\n\t this._shaper.setMap(function (val) {\n\t var multiple = Math.floor((val + 0.0001) / mod);\n\t return multiple;\n\t });\n\t };\n\t /**\n\t\t * The modulus value.\n\t\t * @memberOf Tone.Modulo#\n\t\t * @type {NormalRange}\n\t\t * @name value\n\t\t */\n\t Object.defineProperty(Tone.Modulo.prototype, 'value', {\n\t get: function () {\n\t return this._modSignal.value;\n\t },\n\t set: function (mod) {\n\t this._modSignal.value = mod;\n\t this._setWaveShaper(mod);\n\t }\n\t });\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.Modulo} this\n\t\t */\n\t Tone.Modulo.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._shaper.dispose();\n\t this._shaper = null;\n\t this._multiply.dispose();\n\t this._multiply = null;\n\t this._subtract.dispose();\n\t this._subtract = null;\n\t this._modSignal.dispose();\n\t this._modSignal = null;\n\t return this;\n\t };\n\t return Tone.Modulo;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class AudioToGain converts an input in AudioRange [-1,1] to NormalRange [0,1]. \n\t\t * See Tone.GainToAudio.\n\t\t *\n\t\t * @extends {Tone.SignalBase}\n\t\t * @constructor\n\t\t * @example\n\t\t * var a2g = new Tone.AudioToGain();\n\t\t */\n\t Tone.AudioToGain = function () {\n\t /**\n\t\t\t * @type {WaveShaperNode}\n\t\t\t * @private\n\t\t\t */\n\t this._norm = this.input = this.output = new Tone.WaveShaper(function (x) {\n\t return (x + 1) / 2;\n\t });\n\t };\n\t Tone.extend(Tone.AudioToGain, Tone.SignalBase);\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.AudioToGain} this\n\t\t */\n\t Tone.AudioToGain.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._norm.dispose();\n\t this._norm = null;\n\t return this;\n\t };\n\t return Tone.AudioToGain;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Evaluate an expression at audio rate. <br><br>\n\t\t * Parsing code modified from https://code.google.com/p/tapdigit/\n\t\t * Copyright 2011 2012 Ariya Hidayat, New BSD License\n\t\t *\n\t\t * @extends {Tone.SignalBase}\n\t\t * @constructor\n\t\t * @param {string} expr the expression to generate\n\t\t * @example\n\t\t * //adds the signals from input[0] and input[1].\n\t\t * var expr = new Tone.Expr(\"$0 + $1\");\n\t\t */\n\t Tone.Expr = function () {\n\t var expr = this._replacements(Array.prototype.slice.call(arguments));\n\t var inputCount = this._parseInputs(expr);\n\t /**\n\t\t\t * hold onto all of the nodes for disposal\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._nodes = [];\n\t /**\n\t\t\t * The inputs. The length is determined by the expression. \n\t\t\t * @type {Array}\n\t\t\t */\n\t this.input = new Array(inputCount);\n\t //create a gain for each input\n\t for (var i = 0; i < inputCount; i++) {\n\t this.input[i] = this.context.createGain();\n\t }\n\t //parse the syntax tree\n\t var tree = this._parseTree(expr);\n\t //evaluate the results\n\t var result;\n\t try {\n\t result = this._eval(tree);\n\t } catch (e) {\n\t this._disposeNodes();\n\t throw new Error('Tone.Expr: Could evaluate expression: ' + expr);\n\t }\n\t /**\n\t\t\t * The output node is the result of the expression\n\t\t\t * @type {Tone}\n\t\t\t */\n\t this.output = result;\n\t };\n\t Tone.extend(Tone.Expr, Tone.SignalBase);\n\t //some helpers to cut down the amount of code\n\t function applyBinary(Constructor, args, self) {\n\t var op = new Constructor();\n\t self._eval(args[0]).connect(op, 0, 0);\n\t self._eval(args[1]).connect(op, 0, 1);\n\t return op;\n\t }\n\t function applyUnary(Constructor, args, self) {\n\t var op = new Constructor();\n\t self._eval(args[0]).connect(op, 0, 0);\n\t return op;\n\t }\n\t function getNumber(arg) {\n\t return arg ? parseFloat(arg) : undefined;\n\t }\n\t function literalNumber(arg) {\n\t return arg && arg.args ? parseFloat(arg.args) : undefined;\n\t }\n\t /*\n\t\t * the Expressions that Tone.Expr can parse.\n\t\t *\n\t\t * each expression belongs to a group and contains a regexp \n\t\t * for selecting the operator as well as that operators method\n\t\t * \n\t\t * @type {Object}\n\t\t * @private\n\t\t */\n\t Tone.Expr._Expressions = {\n\t //values\n\t 'value': {\n\t 'signal': {\n\t regexp: /^\\d+\\.\\d+|^\\d+/,\n\t method: function (arg) {\n\t var sig = new Tone.Signal(getNumber(arg));\n\t return sig;\n\t }\n\t },\n\t 'input': {\n\t regexp: /^\\$\\d/,\n\t method: function (arg, self) {\n\t return self.input[getNumber(arg.substr(1))];\n\t }\n\t }\n\t },\n\t //syntactic glue\n\t 'glue': {\n\t '(': { regexp: /^\\(/ },\n\t ')': { regexp: /^\\)/ },\n\t ',': { regexp: /^,/ }\n\t },\n\t //functions\n\t 'func': {\n\t 'abs': {\n\t regexp: /^abs/,\n\t method: applyUnary.bind(this, Tone.Abs)\n\t },\n\t 'mod': {\n\t regexp: /^mod/,\n\t method: function (args, self) {\n\t var modulus = literalNumber(args[1]);\n\t var op = new Tone.Modulo(modulus);\n\t self._eval(args[0]).connect(op);\n\t return op;\n\t }\n\t },\n\t 'pow': {\n\t regexp: /^pow/,\n\t method: function (args, self) {\n\t var exp = literalNumber(args[1]);\n\t var op = new Tone.Pow(exp);\n\t self._eval(args[0]).connect(op);\n\t return op;\n\t }\n\t },\n\t 'a2g': {\n\t regexp: /^a2g/,\n\t method: function (args, self) {\n\t var op = new Tone.AudioToGain();\n\t self._eval(args[0]).connect(op);\n\t return op;\n\t }\n\t }\n\t },\n\t //binary expressions\n\t 'binary': {\n\t '+': {\n\t regexp: /^\\+/,\n\t precedence: 1,\n\t method: applyBinary.bind(this, Tone.Add)\n\t },\n\t '-': {\n\t regexp: /^\\-/,\n\t precedence: 1,\n\t method: function (args, self) {\n\t //both unary and binary op\n\t if (args.length === 1) {\n\t return applyUnary(Tone.Negate, args, self);\n\t } else {\n\t return applyBinary(Tone.Subtract, args, self);\n\t }\n\t }\n\t },\n\t '*': {\n\t regexp: /^\\*/,\n\t precedence: 0,\n\t method: applyBinary.bind(this, Tone.Multiply)\n\t }\n\t },\n\t //unary expressions\n\t 'unary': {\n\t '-': {\n\t regexp: /^\\-/,\n\t method: applyUnary.bind(this, Tone.Negate)\n\t },\n\t '!': {\n\t regexp: /^\\!/,\n\t method: applyUnary.bind(this, Tone.NOT)\n\t }\n\t }\n\t };\n\t /**\n\t\t * @param {string} expr the expression string\n\t\t * @return {number} the input count\n\t\t * @private\n\t\t */\n\t Tone.Expr.prototype._parseInputs = function (expr) {\n\t var inputArray = expr.match(/\\$\\d/g);\n\t var inputMax = 0;\n\t if (inputArray !== null) {\n\t for (var i = 0; i < inputArray.length; i++) {\n\t var inputNum = parseInt(inputArray[i].substr(1)) + 1;\n\t inputMax = Math.max(inputMax, inputNum);\n\t }\n\t }\n\t return inputMax;\n\t };\n\t /**\n\t\t * @param {Array} args \tan array of arguments\n\t\t * @return {string} the results of the replacements being replaced\n\t\t * @private\n\t\t */\n\t Tone.Expr.prototype._replacements = function (args) {\n\t var expr = args.shift();\n\t for (var i = 0; i < args.length; i++) {\n\t expr = expr.replace(/\\%/i, args[i]);\n\t }\n\t return expr;\n\t };\n\t /**\n\t\t * tokenize the expression based on the Expressions object\n\t\t * @param {string} expr \n\t\t * @return {Object} returns two methods on the tokenized list, next and peek\n\t\t * @private\n\t\t */\n\t Tone.Expr.prototype._tokenize = function (expr) {\n\t var position = -1;\n\t var tokens = [];\n\t while (expr.length > 0) {\n\t expr = expr.trim();\n\t var token = getNextToken(expr);\n\t tokens.push(token);\n\t expr = expr.substr(token.value.length);\n\t }\n\t function getNextToken(expr) {\n\t for (var type in Tone.Expr._Expressions) {\n\t var group = Tone.Expr._Expressions[type];\n\t for (var opName in group) {\n\t var op = group[opName];\n\t var reg = op.regexp;\n\t var match = expr.match(reg);\n\t if (match !== null) {\n\t return {\n\t type: type,\n\t value: match[0],\n\t method: op.method\n\t };\n\t }\n\t }\n\t }\n\t throw new SyntaxError('Tone.Expr: Unexpected token ' + expr);\n\t }\n\t return {\n\t next: function () {\n\t return tokens[++position];\n\t },\n\t peek: function () {\n\t return tokens[position + 1];\n\t }\n\t };\n\t };\n\t /**\n\t\t * recursively parse the string expression into a syntax tree\n\t\t * \n\t\t * @param {string} expr \n\t\t * @return {Object}\n\t\t * @private\n\t\t */\n\t Tone.Expr.prototype._parseTree = function (expr) {\n\t var lexer = this._tokenize(expr);\n\t var isUndef = this.isUndef.bind(this);\n\t function matchSyntax(token, syn) {\n\t return !isUndef(token) && token.type === 'glue' && token.value === syn;\n\t }\n\t function matchGroup(token, groupName, prec) {\n\t var ret = false;\n\t var group = Tone.Expr._Expressions[groupName];\n\t if (!isUndef(token)) {\n\t for (var opName in group) {\n\t var op = group[opName];\n\t if (op.regexp.test(token.value)) {\n\t if (!isUndef(prec)) {\n\t if (op.precedence === prec) {\n\t return true;\n\t }\n\t } else {\n\t return true;\n\t }\n\t }\n\t }\n\t }\n\t return ret;\n\t }\n\t function parseExpression(precedence) {\n\t if (isUndef(precedence)) {\n\t precedence = 5;\n\t }\n\t var expr;\n\t if (precedence < 0) {\n\t expr = parseUnary();\n\t } else {\n\t expr = parseExpression(precedence - 1);\n\t }\n\t var token = lexer.peek();\n\t while (matchGroup(token, 'binary', precedence)) {\n\t token = lexer.next();\n\t expr = {\n\t operator: token.value,\n\t method: token.method,\n\t args: [\n\t expr,\n\t parseExpression(precedence - 1)\n\t ]\n\t };\n\t token = lexer.peek();\n\t }\n\t return expr;\n\t }\n\t function parseUnary() {\n\t var token, expr;\n\t token = lexer.peek();\n\t if (matchGroup(token, 'unary')) {\n\t token = lexer.next();\n\t expr = parseUnary();\n\t return {\n\t operator: token.value,\n\t method: token.method,\n\t args: [expr]\n\t };\n\t }\n\t return parsePrimary();\n\t }\n\t function parsePrimary() {\n\t var token, expr;\n\t token = lexer.peek();\n\t if (isUndef(token)) {\n\t throw new SyntaxError('Tone.Expr: Unexpected termination of expression');\n\t }\n\t if (token.type === 'func') {\n\t token = lexer.next();\n\t return parseFunctionCall(token);\n\t }\n\t if (token.type === 'value') {\n\t token = lexer.next();\n\t return {\n\t method: token.method,\n\t args: token.value\n\t };\n\t }\n\t if (matchSyntax(token, '(')) {\n\t lexer.next();\n\t expr = parseExpression();\n\t token = lexer.next();\n\t if (!matchSyntax(token, ')')) {\n\t throw new SyntaxError('Expected )');\n\t }\n\t return expr;\n\t }\n\t throw new SyntaxError('Tone.Expr: Parse error, cannot process token ' + token.value);\n\t }\n\t function parseFunctionCall(func) {\n\t var token, args = [];\n\t token = lexer.next();\n\t if (!matchSyntax(token, '(')) {\n\t throw new SyntaxError('Tone.Expr: Expected ( in a function call \"' + func.value + '\"');\n\t }\n\t token = lexer.peek();\n\t if (!matchSyntax(token, ')')) {\n\t args = parseArgumentList();\n\t }\n\t token = lexer.next();\n\t if (!matchSyntax(token, ')')) {\n\t throw new SyntaxError('Tone.Expr: Expected ) in a function call \"' + func.value + '\"');\n\t }\n\t return {\n\t method: func.method,\n\t args: args,\n\t name: name\n\t };\n\t }\n\t function parseArgumentList() {\n\t var token, expr, args = [];\n\t while (true) {\n\t expr = parseExpression();\n\t if (isUndef(expr)) {\n\t // TODO maybe throw exception?\n\t break;\n\t }\n\t args.push(expr);\n\t token = lexer.peek();\n\t if (!matchSyntax(token, ',')) {\n\t break;\n\t }\n\t lexer.next();\n\t }\n\t return args;\n\t }\n\t return parseExpression();\n\t };\n\t /**\n\t\t * recursively evaluate the expression tree\n\t\t * @param {Object} tree \n\t\t * @return {AudioNode} the resulting audio node from the expression\n\t\t * @private\n\t\t */\n\t Tone.Expr.prototype._eval = function (tree) {\n\t if (!this.isUndef(tree)) {\n\t var node = tree.method(tree.args, this);\n\t this._nodes.push(node);\n\t return node;\n\t }\n\t };\n\t /**\n\t\t * dispose all the nodes\n\t\t * @private\n\t\t */\n\t Tone.Expr.prototype._disposeNodes = function () {\n\t for (var i = 0; i < this._nodes.length; i++) {\n\t var node = this._nodes[i];\n\t if (this.isFunction(node.dispose)) {\n\t node.dispose();\n\t } else if (this.isFunction(node.disconnect)) {\n\t node.disconnect();\n\t }\n\t node = null;\n\t this._nodes[i] = null;\n\t }\n\t this._nodes = null;\n\t };\n\t /**\n\t\t * clean up\n\t\t */\n\t Tone.Expr.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._disposeNodes();\n\t };\n\t return Tone.Expr;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Convert an incoming signal between 0, 1 to an equal power gain scale.\n\t\t *\n\t\t * @extends {Tone.SignalBase}\n\t\t * @constructor\n\t\t * @example\n\t\t * var eqPowGain = new Tone.EqualPowerGain();\n\t\t */\n\t Tone.EqualPowerGain = function () {\n\t /**\n\t\t\t * @type {Tone.WaveShaper}\n\t\t\t * @private\n\t\t\t */\n\t this._eqPower = this.input = this.output = new Tone.WaveShaper(function (val) {\n\t if (Math.abs(val) < 0.001) {\n\t //should output 0 when input is 0\n\t return 0;\n\t } else {\n\t return this.equalPowerScale(val);\n\t }\n\t }.bind(this), 4096);\n\t };\n\t Tone.extend(Tone.EqualPowerGain, Tone.SignalBase);\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.EqualPowerGain} this\n\t\t */\n\t Tone.EqualPowerGain.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._eqPower.dispose();\n\t this._eqPower = null;\n\t return this;\n\t };\n\t return Tone.EqualPowerGain;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Crossfade provides equal power fading between two inputs. \n\t\t * More on crossfading technique [here](https://en.wikipedia.org/wiki/Fade_(audio_engineering)#Crossfading).\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone}\n\t\t * @param {NormalRange} [initialFade=0.5]\n\t\t * @example\n\t\t * var crossFade = new Tone.CrossFade(0.5);\n\t\t * //connect effect A to crossfade from\n\t\t * //effect output 0 to crossfade input 0\n\t\t * effectA.connect(crossFade, 0, 0);\n\t\t * //connect effect B to crossfade from\n\t\t * //effect output 0 to crossfade input 1\n\t\t * effectB.connect(crossFade, 0, 1);\n\t\t * crossFade.fade.value = 0;\n\t\t * // ^ only effectA is output\n\t\t * crossFade.fade.value = 1;\n\t\t * // ^ only effectB is output\n\t\t * crossFade.fade.value = 0.5;\n\t\t * // ^ the two signals are mixed equally. \n\t\t */\n\t Tone.CrossFade = function (initialFade) {\n\t this.createInsOuts(2, 1);\n\t /**\n\t\t\t * Alias for <code>input[0]</code>. \n\t\t\t * @type {Tone.Gain}\n\t\t\t */\n\t this.a = this.input[0] = new Tone.Gain();\n\t /**\n\t\t\t * Alias for <code>input[1]</code>. \n\t\t\t * @type {Tone.Gain}\n\t\t\t */\n\t this.b = this.input[1] = new Tone.Gain();\n\t /**\n\t\t\t * \tThe mix between the two inputs. A fade value of 0\n\t\t\t * \twill output 100% <code>input[0]</code> and \n\t\t\t * \ta value of 1 will output 100% <code>input[1]</code>. \n\t\t\t * @type {NormalRange}\n\t\t\t * @signal\n\t\t\t */\n\t this.fade = new Tone.Signal(this.defaultArg(initialFade, 0.5), Tone.Type.NormalRange);\n\t /**\n\t\t\t * equal power gain cross fade\n\t\t\t * @private\n\t\t\t * @type {Tone.EqualPowerGain}\n\t\t\t */\n\t this._equalPowerA = new Tone.EqualPowerGain();\n\t /**\n\t\t\t * equal power gain cross fade\n\t\t\t * @private\n\t\t\t * @type {Tone.EqualPowerGain}\n\t\t\t */\n\t this._equalPowerB = new Tone.EqualPowerGain();\n\t /**\n\t\t\t * invert the incoming signal\n\t\t\t * @private\n\t\t\t * @type {Tone}\n\t\t\t */\n\t this._invert = new Tone.Expr('1 - $0');\n\t //connections\n\t this.a.connect(this.output);\n\t this.b.connect(this.output);\n\t this.fade.chain(this._equalPowerB, this.b.gain);\n\t this.fade.chain(this._invert, this._equalPowerA, this.a.gain);\n\t this._readOnly('fade');\n\t };\n\t Tone.extend(Tone.CrossFade);\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.CrossFade} this\n\t\t */\n\t Tone.CrossFade.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._writable('fade');\n\t this._equalPowerA.dispose();\n\t this._equalPowerA = null;\n\t this._equalPowerB.dispose();\n\t this._equalPowerB = null;\n\t this.fade.dispose();\n\t this.fade = null;\n\t this._invert.dispose();\n\t this._invert = null;\n\t this.a.dispose();\n\t this.a = null;\n\t this.b.dispose();\n\t this.b = null;\n\t return this;\n\t };\n\t return Tone.CrossFade;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Filter is a filter which allows for all of the same native methods\n\t\t * as the [BiquadFilterNode](http://webaudio.github.io/web-audio-api/#the-biquadfilternode-interface). \n\t\t * Tone.Filter has the added ability to set the filter rolloff at -12 \n\t\t * (default), -24 and -48. \n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone}\n\t\t * @param {Frequency|Object} [frequency] The cutoff frequency of the filter.\n\t\t * @param {string=} type The type of filter.\n\t\t * @param {number=} rolloff The drop in decibels per octave after the cutoff frequency.\n\t\t * 3 choices: -12, -24, and -48\n\t\t * @example\n\t\t * var filter = new Tone.Filter(200, \"highpass\");\n\t\t */\n\t Tone.Filter = function () {\n\t this.createInsOuts(1, 1);\n\t var options = this.optionsObject(arguments, [\n\t 'frequency',\n\t 'type',\n\t 'rolloff'\n\t ], Tone.Filter.defaults);\n\t /**\n\t\t\t * the filter(s)\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._filters = [];\n\t /**\n\t\t\t * The cutoff frequency of the filter. \n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.frequency = new Tone.Signal(options.frequency, Tone.Type.Frequency);\n\t /**\n\t\t\t * The detune parameter\n\t\t\t * @type {Cents}\n\t\t\t * @signal\n\t\t\t */\n\t this.detune = new Tone.Signal(0, Tone.Type.Cents);\n\t /**\n\t\t\t * The gain of the filter, only used in certain filter types\n\t\t\t * @type {Number}\n\t\t\t * @signal\n\t\t\t */\n\t this.gain = new Tone.Signal({\n\t 'value': options.gain,\n\t 'convert': false\n\t });\n\t /**\n\t\t\t * The Q or Quality of the filter\n\t\t\t * @type {Positive}\n\t\t\t * @signal\n\t\t\t */\n\t this.Q = new Tone.Signal(options.Q);\n\t /**\n\t\t\t * the type of the filter\n\t\t\t * @type {string}\n\t\t\t * @private\n\t\t\t */\n\t this._type = options.type;\n\t /**\n\t\t\t * the rolloff value of the filter\n\t\t\t * @type {number}\n\t\t\t * @private\n\t\t\t */\n\t this._rolloff = options.rolloff;\n\t //set the rolloff;\n\t this.rolloff = options.rolloff;\n\t this._readOnly([\n\t 'detune',\n\t 'frequency',\n\t 'gain',\n\t 'Q'\n\t ]);\n\t };\n\t Tone.extend(Tone.Filter);\n\t /**\n\t\t * the default parameters\n\t\t *\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.Filter.defaults = {\n\t 'type': 'lowpass',\n\t 'frequency': 350,\n\t 'rolloff': -12,\n\t 'Q': 1,\n\t 'gain': 0\n\t };\n\t /**\n\t\t * The type of the filter. Types: \"lowpass\", \"highpass\", \n\t\t * \"bandpass\", \"lowshelf\", \"highshelf\", \"notch\", \"allpass\", or \"peaking\". \n\t\t * @memberOf Tone.Filter#\n\t\t * @type {string}\n\t\t * @name type\n\t\t */\n\t Object.defineProperty(Tone.Filter.prototype, 'type', {\n\t get: function () {\n\t return this._type;\n\t },\n\t set: function (type) {\n\t var types = [\n\t 'lowpass',\n\t 'highpass',\n\t 'bandpass',\n\t 'lowshelf',\n\t 'highshelf',\n\t 'notch',\n\t 'allpass',\n\t 'peaking'\n\t ];\n\t if (types.indexOf(type) === -1) {\n\t throw new TypeError('Tone.Filter: invalid type ' + type);\n\t }\n\t this._type = type;\n\t for (var i = 0; i < this._filters.length; i++) {\n\t this._filters[i].type = type;\n\t }\n\t }\n\t });\n\t /**\n\t\t * The rolloff of the filter which is the drop in db\n\t\t * per octave. Implemented internally by cascading filters.\n\t\t * Only accepts the values -12, -24, -48 and -96.\n\t\t * @memberOf Tone.Filter#\n\t\t * @type {number}\n\t\t * @name rolloff\n\t\t */\n\t Object.defineProperty(Tone.Filter.prototype, 'rolloff', {\n\t get: function () {\n\t return this._rolloff;\n\t },\n\t set: function (rolloff) {\n\t rolloff = parseInt(rolloff, 10);\n\t var possibilities = [\n\t -12,\n\t -24,\n\t -48,\n\t -96\n\t ];\n\t var cascadingCount = possibilities.indexOf(rolloff);\n\t //check the rolloff is valid\n\t if (cascadingCount === -1) {\n\t throw new RangeError('Tone.Filter: rolloff can only be -12, -24, -48 or -96');\n\t }\n\t cascadingCount += 1;\n\t this._rolloff = rolloff;\n\t //first disconnect the filters and throw them away\n\t this.input.disconnect();\n\t for (var i = 0; i < this._filters.length; i++) {\n\t this._filters[i].disconnect();\n\t this._filters[i] = null;\n\t }\n\t this._filters = new Array(cascadingCount);\n\t for (var count = 0; count < cascadingCount; count++) {\n\t var filter = this.context.createBiquadFilter();\n\t filter.type = this._type;\n\t this.frequency.connect(filter.frequency);\n\t this.detune.connect(filter.detune);\n\t this.Q.connect(filter.Q);\n\t this.gain.connect(filter.gain);\n\t this._filters[count] = filter;\n\t }\n\t //connect them up\n\t var connectionChain = [this.input].concat(this._filters).concat([this.output]);\n\t this.connectSeries.apply(this, connectionChain);\n\t }\n\t });\n\t /**\n\t\t * Clean up. \n\t\t * @return {Tone.Filter} this\n\t\t */\n\t Tone.Filter.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t for (var i = 0; i < this._filters.length; i++) {\n\t this._filters[i].disconnect();\n\t this._filters[i] = null;\n\t }\n\t this._filters = null;\n\t this._writable([\n\t 'detune',\n\t 'frequency',\n\t 'gain',\n\t 'Q'\n\t ]);\n\t this.frequency.dispose();\n\t this.Q.dispose();\n\t this.frequency = null;\n\t this.Q = null;\n\t this.detune.dispose();\n\t this.detune = null;\n\t this.gain.dispose();\n\t this.gain = null;\n\t return this;\n\t };\n\t return Tone.Filter;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Split the incoming signal into three bands (low, mid, high)\n\t\t * with two crossover frequency controls. \n\t\t *\n\t\t * @extends {Tone}\n\t\t * @constructor\n\t\t * @param {Frequency|Object} [lowFrequency] the low/mid crossover frequency\n\t\t * @param {Frequency} [highFrequency] the mid/high crossover frequency\n\t\t */\n\t Tone.MultibandSplit = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'lowFrequency',\n\t 'highFrequency'\n\t ], Tone.MultibandSplit.defaults);\n\t /**\n\t\t\t * the input\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this.input = new Tone.Gain();\n\t /**\n\t\t\t * the outputs\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this.output = new Array(3);\n\t /**\n\t\t\t * The low band. Alias for <code>output[0]</code>\n\t\t\t * @type {Tone.Filter}\n\t\t\t */\n\t this.low = this.output[0] = new Tone.Filter(0, 'lowpass');\n\t /**\n\t\t\t * the lower filter of the mid band\n\t\t\t * @type {Tone.Filter}\n\t\t\t * @private\n\t\t\t */\n\t this._lowMidFilter = new Tone.Filter(0, 'highpass');\n\t /**\n\t\t\t * The mid band output. Alias for <code>output[1]</code>\n\t\t\t * @type {Tone.Filter}\n\t\t\t */\n\t this.mid = this.output[1] = new Tone.Filter(0, 'lowpass');\n\t /**\n\t\t\t * The high band output. Alias for <code>output[2]</code>\n\t\t\t * @type {Tone.Filter}\n\t\t\t */\n\t this.high = this.output[2] = new Tone.Filter(0, 'highpass');\n\t /**\n\t\t\t * The low/mid crossover frequency.\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.lowFrequency = new Tone.Signal(options.lowFrequency, Tone.Type.Frequency);\n\t /**\n\t\t\t * The mid/high crossover frequency.\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.highFrequency = new Tone.Signal(options.highFrequency, Tone.Type.Frequency);\n\t /**\n\t\t\t * The quality of all the filters\n\t\t\t * @type {Number}\n\t\t\t * @signal\n\t\t\t */\n\t this.Q = new Tone.Signal(options.Q);\n\t this.input.fan(this.low, this.high);\n\t this.input.chain(this._lowMidFilter, this.mid);\n\t //the frequency control signal\n\t this.lowFrequency.connect(this.low.frequency);\n\t this.lowFrequency.connect(this._lowMidFilter.frequency);\n\t this.highFrequency.connect(this.mid.frequency);\n\t this.highFrequency.connect(this.high.frequency);\n\t //the Q value\n\t this.Q.connect(this.low.Q);\n\t this.Q.connect(this._lowMidFilter.Q);\n\t this.Q.connect(this.mid.Q);\n\t this.Q.connect(this.high.Q);\n\t this._readOnly([\n\t 'high',\n\t 'mid',\n\t 'low',\n\t 'highFrequency',\n\t 'lowFrequency'\n\t ]);\n\t };\n\t Tone.extend(Tone.MultibandSplit);\n\t /**\n\t\t * @private\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.MultibandSplit.defaults = {\n\t 'lowFrequency': 400,\n\t 'highFrequency': 2500,\n\t 'Q': 1\n\t };\n\t /**\n\t\t * Clean up.\n\t\t * @returns {Tone.MultibandSplit} this\n\t\t */\n\t Tone.MultibandSplit.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._writable([\n\t 'high',\n\t 'mid',\n\t 'low',\n\t 'highFrequency',\n\t 'lowFrequency'\n\t ]);\n\t this.low.dispose();\n\t this.low = null;\n\t this._lowMidFilter.dispose();\n\t this._lowMidFilter = null;\n\t this.mid.dispose();\n\t this.mid = null;\n\t this.high.dispose();\n\t this.high = null;\n\t this.lowFrequency.dispose();\n\t this.lowFrequency = null;\n\t this.highFrequency.dispose();\n\t this.highFrequency = null;\n\t this.Q.dispose();\n\t this.Q = null;\n\t return this;\n\t };\n\t return Tone.MultibandSplit;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.EQ3 is a three band EQ with control over low, mid, and high gain as\n\t\t * well as the low and high crossover frequencies.\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone}\n\t\t * \n\t\t * @param {Decibels|Object} [lowLevel] The gain applied to the lows.\n\t\t * @param {Decibels} [midLevel] The gain applied to the mid.\n\t\t * @param {Decibels} [highLevel] The gain applied to the high.\n\t\t * @example\n\t\t * var eq = new Tone.EQ3(-10, 3, -20);\n\t\t */\n\t Tone.EQ3 = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'low',\n\t 'mid',\n\t 'high'\n\t ], Tone.EQ3.defaults);\n\t /**\n\t\t\t * the output node\n\t\t\t * @type {GainNode}\n\t\t\t * @private\n\t\t\t */\n\t this.output = new Tone.Gain();\n\t /**\n\t\t\t * the multiband split\n\t\t\t * @type {Tone.MultibandSplit}\n\t\t\t * @private\n\t\t\t */\n\t this._multibandSplit = this.input = new Tone.MultibandSplit({\n\t 'lowFrequency': options.lowFrequency,\n\t 'highFrequency': options.highFrequency\n\t });\n\t /**\n\t\t\t * The gain for the lower signals\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this._lowGain = new Tone.Gain(options.low, Tone.Type.Decibels);\n\t /**\n\t\t\t * The gain for the mid signals\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this._midGain = new Tone.Gain(options.mid, Tone.Type.Decibels);\n\t /**\n\t\t\t * The gain in decibels of the high part\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this._highGain = new Tone.Gain(options.high, Tone.Type.Decibels);\n\t /**\n\t\t\t * The gain in decibels of the low part\n\t\t\t * @type {Decibels}\n\t\t\t * @signal\n\t\t\t */\n\t this.low = this._lowGain.gain;\n\t /**\n\t\t\t * The gain in decibels of the mid part\n\t\t\t * @type {Decibels}\n\t\t\t * @signal\n\t\t\t */\n\t this.mid = this._midGain.gain;\n\t /**\n\t\t\t * The gain in decibels of the high part\n\t\t\t * @type {Decibels}\n\t\t\t * @signal\n\t\t\t */\n\t this.high = this._highGain.gain;\n\t /**\n\t\t\t * The Q value for all of the filters. \n\t\t\t * @type {Positive}\n\t\t\t * @signal\n\t\t\t */\n\t this.Q = this._multibandSplit.Q;\n\t /**\n\t\t\t * The low/mid crossover frequency. \n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.lowFrequency = this._multibandSplit.lowFrequency;\n\t /**\n\t\t\t * The mid/high crossover frequency. \n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.highFrequency = this._multibandSplit.highFrequency;\n\t //the frequency bands\n\t this._multibandSplit.low.chain(this._lowGain, this.output);\n\t this._multibandSplit.mid.chain(this._midGain, this.output);\n\t this._multibandSplit.high.chain(this._highGain, this.output);\n\t this._readOnly([\n\t 'low',\n\t 'mid',\n\t 'high',\n\t 'lowFrequency',\n\t 'highFrequency'\n\t ]);\n\t };\n\t Tone.extend(Tone.EQ3);\n\t /**\n\t\t * the default values\n\t\t */\n\t Tone.EQ3.defaults = {\n\t 'low': 0,\n\t 'mid': 0,\n\t 'high': 0,\n\t 'lowFrequency': 400,\n\t 'highFrequency': 2500\n\t };\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.EQ3} this\n\t\t */\n\t Tone.EQ3.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._writable([\n\t 'low',\n\t 'mid',\n\t 'high',\n\t 'lowFrequency',\n\t 'highFrequency'\n\t ]);\n\t this._multibandSplit.dispose();\n\t this._multibandSplit = null;\n\t this.lowFrequency = null;\n\t this.highFrequency = null;\n\t this._lowGain.dispose();\n\t this._lowGain = null;\n\t this._midGain.dispose();\n\t this._midGain = null;\n\t this._highGain.dispose();\n\t this._highGain = null;\n\t this.low = null;\n\t this.mid = null;\n\t this.high = null;\n\t this.Q = null;\n\t return this;\n\t };\n\t return Tone.EQ3;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Performs a linear scaling on an input signal.\n\t\t * Scales a NormalRange input to between\n\t\t * outputMin and outputMax.\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.SignalBase}\n\t\t * @param {number} [outputMin=0] The output value when the input is 0. \n\t\t * @param {number} [outputMax=1]\tThe output value when the input is 1. \n\t\t * @example\n\t\t * var scale = new Tone.Scale(50, 100);\n\t\t * var signal = new Tone.Signal(0.5).connect(scale);\n\t\t * //the output of scale equals 75\n\t\t */\n\t Tone.Scale = function (outputMin, outputMax) {\n\t /** \n\t\t\t * @private\n\t\t\t * @type {number}\n\t\t\t */\n\t this._outputMin = this.defaultArg(outputMin, 0);\n\t /** \n\t\t\t * @private\n\t\t\t * @type {number}\n\t\t\t */\n\t this._outputMax = this.defaultArg(outputMax, 1);\n\t /** \n\t\t\t * @private\n\t\t\t * @type {Tone.Multiply}\n\t\t\t * @private\n\t\t\t */\n\t this._scale = this.input = new Tone.Multiply(1);\n\t /** \n\t\t\t * @private\n\t\t\t * @type {Tone.Add}\n\t\t\t * @private\n\t\t\t */\n\t this._add = this.output = new Tone.Add(0);\n\t this._scale.connect(this._add);\n\t this._setRange();\n\t };\n\t Tone.extend(Tone.Scale, Tone.SignalBase);\n\t /**\n\t\t * The minimum output value. This number is output when \n\t\t * the value input value is 0. \n\t\t * @memberOf Tone.Scale#\n\t\t * @type {number}\n\t\t * @name min\n\t\t */\n\t Object.defineProperty(Tone.Scale.prototype, 'min', {\n\t get: function () {\n\t return this._outputMin;\n\t },\n\t set: function (min) {\n\t this._outputMin = min;\n\t this._setRange();\n\t }\n\t });\n\t /**\n\t\t * The maximum output value. This number is output when \n\t\t * the value input value is 1. \n\t\t * @memberOf Tone.Scale#\n\t\t * @type {number}\n\t\t * @name max\n\t\t */\n\t Object.defineProperty(Tone.Scale.prototype, 'max', {\n\t get: function () {\n\t return this._outputMax;\n\t },\n\t set: function (max) {\n\t this._outputMax = max;\n\t this._setRange();\n\t }\n\t });\n\t /**\n\t\t * set the values\n\t\t * @private\n\t\t */\n\t Tone.Scale.prototype._setRange = function () {\n\t this._add.value = this._outputMin;\n\t this._scale.value = this._outputMax - this._outputMin;\n\t };\n\t /**\n\t\t * Clean up.\n\t\t * @returns {Tone.Scale} this\n\t\t */\n\t Tone.Scale.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._add.dispose();\n\t this._add = null;\n\t this._scale.dispose();\n\t this._scale = null;\n\t return this;\n\t };\n\t return Tone.Scale;\n\t});\n\tModule(function (Tone) {\n\t /**\n\t\t * @class Performs an exponential scaling on an input signal.\n\t\t * Scales a NormalRange value [0,1] exponentially\n\t\t * to the output range of outputMin to outputMax.\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.SignalBase}\n\t\t * @param {number} [outputMin=0] The output value when the input is 0. \n\t\t * @param {number} [outputMax=1]\tThe output value when the input is 1. \n\t\t * @param {number} [exponent=2] The exponent which scales the incoming signal.\n\t\t * @example\n\t\t * var scaleExp = new Tone.ScaleExp(0, 100, 2);\n\t\t * var signal = new Tone.Signal(0.5).connect(scaleExp);\n\t\t */\n\t Tone.ScaleExp = function (outputMin, outputMax, exponent) {\n\t /**\n\t\t\t * scale the input to the output range\n\t\t\t * @type {Tone.Scale}\n\t\t\t * @private\n\t\t\t */\n\t this._scale = this.output = new Tone.Scale(outputMin, outputMax);\n\t /**\n\t\t\t * @private\n\t\t\t * @type {Tone.Pow}\n\t\t\t * @private\n\t\t\t */\n\t this._exp = this.input = new Tone.Pow(this.defaultArg(exponent, 2));\n\t this._exp.connect(this._scale);\n\t };\n\t Tone.extend(Tone.ScaleExp, Tone.SignalBase);\n\t /**\n\t\t * Instead of interpolating linearly between the <code>min</code> and \n\t\t * <code>max</code> values, setting the exponent will interpolate between\n\t\t * the two values with an exponential curve. \n\t\t * @memberOf Tone.ScaleExp#\n\t\t * @type {number}\n\t\t * @name exponent\n\t\t */\n\t Object.defineProperty(Tone.ScaleExp.prototype, 'exponent', {\n\t get: function () {\n\t return this._exp.value;\n\t },\n\t set: function (exp) {\n\t this._exp.value = exp;\n\t }\n\t });\n\t /**\n\t\t * The minimum output value. This number is output when \n\t\t * the value input value is 0. \n\t\t * @memberOf Tone.ScaleExp#\n\t\t * @type {number}\n\t\t * @name min\n\t\t */\n\t Object.defineProperty(Tone.ScaleExp.prototype, 'min', {\n\t get: function () {\n\t return this._scale.min;\n\t },\n\t set: function (min) {\n\t this._scale.min = min;\n\t }\n\t });\n\t /**\n\t\t * The maximum output value. This number is output when \n\t\t * the value input value is 1. \n\t\t * @memberOf Tone.ScaleExp#\n\t\t * @type {number}\n\t\t * @name max\n\t\t */\n\t Object.defineProperty(Tone.ScaleExp.prototype, 'max', {\n\t get: function () {\n\t return this._scale.max;\n\t },\n\t set: function (max) {\n\t this._scale.max = max;\n\t }\n\t });\n\t /**\n\t\t * Clean up.\n\t\t * @returns {Tone.ScaleExp} this\n\t\t */\n\t Tone.ScaleExp.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._scale.dispose();\n\t this._scale = null;\n\t this._exp.dispose();\n\t this._exp = null;\n\t return this;\n\t };\n\t return Tone.ScaleExp;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * createDelay shim\n\t\t * @private\n\t\t */\n\t if (window.DelayNode && !AudioContext.prototype.createDelay) {\n\t AudioContext.prototype.createDelay = AudioContext.prototype.createDelayNode;\n\t }\n\t /**\n\t\t * @class Wrapper around Web Audio's native [DelayNode](http://webaudio.github.io/web-audio-api/#the-delaynode-interface). \n\t\t * @extends {Tone}\n\t\t * @param {Time=} delayTime The delay applied to the incoming signal.\n\t\t * @param {Time=} maxDelay The maximum delay time. \n\t\t */\n\t Tone.Delay = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'delayTime',\n\t 'maxDelay'\n\t ], Tone.Delay.defaults);\n\t /**\n\t\t\t * The native delay node\n\t\t\t * @type {DelayNode}\n\t\t\t * @private\n\t\t\t */\n\t this._delayNode = this.input = this.output = this.context.createDelay(this.toSeconds(options.maxDelay));\n\t /**\n\t\t\t * The amount of time the incoming signal is\n\t\t\t * delayed. \n\t\t\t * @type {Tone.Param}\n\t\t\t * @signal\n\t\t\t */\n\t this.delayTime = new Tone.Param({\n\t 'param': this._delayNode.delayTime,\n\t 'units': Tone.Type.Time,\n\t 'value': options.delayTime\n\t });\n\t this._readOnly('delayTime');\n\t };\n\t Tone.extend(Tone.Delay);\n\t /**\n\t\t * The defaults\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.Delay.defaults = {\n\t 'maxDelay': 1,\n\t 'delayTime': 0\n\t };\n\t /**\n\t\t * Clean up.\n\t\t * @return {Tone.Delay} this\n\t\t */\n\t Tone.Delay.prototype.dispose = function () {\n\t Tone.Param.prototype.dispose.call(this);\n\t this._delayNode.disconnect();\n\t this._delayNode = null;\n\t this._writable('delayTime');\n\t this.delayTime = null;\n\t return this;\n\t };\n\t return Tone.Delay;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Comb filters are basic building blocks for physical modeling. Read more\n\t\t * about comb filters on [CCRMA's website](https://ccrma.stanford.edu/~jos/pasp/Feedback_Comb_Filters.html).\n\t\t *\n\t\t * @extends {Tone}\n\t\t * @constructor\n\t\t * @param {Time|Object} [delayTime] The delay time of the filter. \n\t\t * @param {NormalRange=} resonance The amount of feedback the filter has. \n\t\t */\n\t Tone.FeedbackCombFilter = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'delayTime',\n\t 'resonance'\n\t ], Tone.FeedbackCombFilter.defaults);\n\t /**\n\t\t\t * the delay node\n\t\t\t * @type {DelayNode}\n\t\t\t * @private\n\t\t\t */\n\t this._delay = this.input = this.output = new Tone.Delay(options.delayTime);\n\t /**\n\t\t\t * The amount of delay of the comb filter. \n\t\t\t * @type {Time}\n\t\t\t * @signal\n\t\t\t */\n\t this.delayTime = this._delay.delayTime;\n\t /**\n\t\t\t * the feedback node\n\t\t\t * @type {GainNode}\n\t\t\t * @private\n\t\t\t */\n\t this._feedback = new Tone.Gain(options.resonance, Tone.Type.NormalRange);\n\t /**\n\t\t\t * The amount of feedback of the delayed signal. \n\t\t\t * @type {NormalRange}\n\t\t\t * @signal\n\t\t\t */\n\t this.resonance = this._feedback.gain;\n\t this._delay.chain(this._feedback, this._delay);\n\t this._readOnly([\n\t 'resonance',\n\t 'delayTime'\n\t ]);\n\t };\n\t Tone.extend(Tone.FeedbackCombFilter);\n\t /**\n\t\t * the default parameters\n\t\t * @static\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.FeedbackCombFilter.defaults = {\n\t 'delayTime': 0.1,\n\t 'resonance': 0.5\n\t };\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.FeedbackCombFilter} this\n\t\t */\n\t Tone.FeedbackCombFilter.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._writable([\n\t 'resonance',\n\t 'delayTime'\n\t ]);\n\t this._delay.dispose();\n\t this._delay = null;\n\t this.delayTime = null;\n\t this._feedback.dispose();\n\t this._feedback = null;\n\t this.resonance = null;\n\t return this;\n\t };\n\t return Tone.FeedbackCombFilter;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Follower is a crude envelope follower which will follow \n\t\t * the amplitude of an incoming signal. \n\t\t * Take care with small (< 0.02) attack or decay values \n\t\t * as follower has some ripple which is exaggerated\n\t\t * at these values. Read more about envelope followers (also known \n\t\t * as envelope detectors) on [Wikipedia](https://en.wikipedia.org/wiki/Envelope_detector).\n\t\t * \n\t\t * @constructor\n\t\t * @extends {Tone}\n\t\t * @param {Time|Object} [attack] The rate at which the follower rises.\n\t\t * @param {Time=} release The rate at which the folower falls. \n\t\t * @example\n\t\t * var follower = new Tone.Follower(0.2, 0.4);\n\t\t */\n\t Tone.Follower = function () {\n\t this.createInsOuts(1, 1);\n\t var options = this.optionsObject(arguments, [\n\t 'attack',\n\t 'release'\n\t ], Tone.Follower.defaults);\n\t /**\n\t\t\t * @type {Tone.Abs}\n\t\t\t * @private\n\t\t\t */\n\t this._abs = new Tone.Abs();\n\t /**\n\t\t\t * the lowpass filter which smooths the input\n\t\t\t * @type {BiquadFilterNode}\n\t\t\t * @private\n\t\t\t */\n\t this._filter = this.context.createBiquadFilter();\n\t this._filter.type = 'lowpass';\n\t this._filter.frequency.value = 0;\n\t this._filter.Q.value = -100;\n\t /**\n\t\t\t * @type {WaveShaperNode}\n\t\t\t * @private\n\t\t\t */\n\t this._frequencyValues = new Tone.WaveShaper();\n\t /**\n\t\t\t * @type {Tone.Subtract}\n\t\t\t * @private\n\t\t\t */\n\t this._sub = new Tone.Subtract();\n\t /**\n\t\t\t * @type {Tone.Delay}\n\t\t\t * @private\n\t\t\t */\n\t this._delay = new Tone.Delay(this.blockTime);\n\t /**\n\t\t\t * this keeps it far from 0, even for very small differences\n\t\t\t * @type {Tone.Multiply}\n\t\t\t * @private\n\t\t\t */\n\t this._mult = new Tone.Multiply(10000);\n\t /**\n\t\t\t * @private\n\t\t\t * @type {number}\n\t\t\t */\n\t this._attack = options.attack;\n\t /**\n\t\t\t * @private\n\t\t\t * @type {number}\n\t\t\t */\n\t this._release = options.release;\n\t //the smoothed signal to get the values\n\t this.input.chain(this._abs, this._filter, this.output);\n\t //the difference path\n\t this._abs.connect(this._sub, 0, 1);\n\t this._filter.chain(this._delay, this._sub);\n\t //threshold the difference and use the thresh to set the frequency\n\t this._sub.chain(this._mult, this._frequencyValues, this._filter.frequency);\n\t //set the attack and release values in the table\n\t this._setAttackRelease(this._attack, this._release);\n\t };\n\t Tone.extend(Tone.Follower);\n\t /**\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.Follower.defaults = {\n\t 'attack': 0.05,\n\t 'release': 0.5\n\t };\n\t /**\n\t\t * sets the attack and release times in the wave shaper\n\t\t * @param {Time} attack \n\t\t * @param {Time} release \n\t\t * @private\n\t\t */\n\t Tone.Follower.prototype._setAttackRelease = function (attack, release) {\n\t var minTime = this.blockTime;\n\t attack = Tone.Time(attack).toFrequency();\n\t release = Tone.Time(release).toFrequency();\n\t attack = Math.max(attack, minTime);\n\t release = Math.max(release, minTime);\n\t this._frequencyValues.setMap(function (val) {\n\t if (val <= 0) {\n\t return attack;\n\t } else {\n\t return release;\n\t }\n\t });\n\t };\n\t /**\n\t\t * The attack time.\n\t\t * @memberOf Tone.Follower#\n\t\t * @type {Time}\n\t\t * @name attack\n\t\t */\n\t Object.defineProperty(Tone.Follower.prototype, 'attack', {\n\t get: function () {\n\t return this._attack;\n\t },\n\t set: function (attack) {\n\t this._attack = attack;\n\t this._setAttackRelease(this._attack, this._release);\n\t }\n\t });\n\t /**\n\t\t * The release time.\n\t\t * @memberOf Tone.Follower#\n\t\t * @type {Time}\n\t\t * @name release\n\t\t */\n\t Object.defineProperty(Tone.Follower.prototype, 'release', {\n\t get: function () {\n\t return this._release;\n\t },\n\t set: function (release) {\n\t this._release = release;\n\t this._setAttackRelease(this._attack, this._release);\n\t }\n\t });\n\t /**\n\t\t * Borrows the connect method from Signal so that the output can be used\n\t\t * as a Tone.Signal control signal.\n\t\t * @function\n\t\t */\n\t Tone.Follower.prototype.connect = Tone.Signal.prototype.connect;\n\t /**\n\t\t * dispose\n\t\t * @returns {Tone.Follower} this\n\t\t */\n\t Tone.Follower.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._filter.disconnect();\n\t this._filter = null;\n\t this._frequencyValues.disconnect();\n\t this._frequencyValues = null;\n\t this._delay.dispose();\n\t this._delay = null;\n\t this._sub.disconnect();\n\t this._sub = null;\n\t this._abs.dispose();\n\t this._abs = null;\n\t this._mult.dispose();\n\t this._mult = null;\n\t this._curve = null;\n\t return this;\n\t };\n\t return Tone.Follower;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.ScaledEnvelop is an envelope which can be scaled \n\t\t * to any range. It's useful for applying an envelope \n\t\t * to a frequency or any other non-NormalRange signal \n\t\t * parameter. \n\t\t *\n\t\t * @extends {Tone.Envelope}\n\t\t * @constructor\n\t\t * @param {Time|Object} [attack]\tthe attack time in seconds\n\t\t * @param {Time} [decay]\tthe decay time in seconds\n\t\t * @param {number} [sustain] \ta percentage (0-1) of the full amplitude\n\t\t * @param {Time} [release]\tthe release time in seconds\n\t\t * @example\n\t\t * var scaledEnv = new Tone.ScaledEnvelope({\n\t\t * \t\"attack\" : 0.2,\n\t\t * \t\"min\" : 200,\n\t\t * \t\"max\" : 2000\n\t\t * });\n\t\t * scaledEnv.connect(oscillator.frequency);\n\t\t */\n\t Tone.ScaledEnvelope = function () {\n\t //get all of the defaults\n\t var options = this.optionsObject(arguments, [\n\t 'attack',\n\t 'decay',\n\t 'sustain',\n\t 'release'\n\t ], Tone.Envelope.defaults);\n\t Tone.Envelope.call(this, options);\n\t options = this.defaultArg(options, Tone.ScaledEnvelope.defaults);\n\t /** \n\t\t\t * scale the incoming signal by an exponent\n\t\t\t * @type {Tone.Pow}\n\t\t\t * @private\n\t\t\t */\n\t this._exp = this.output = new Tone.Pow(options.exponent);\n\t /**\n\t\t\t * scale the signal to the desired range\n\t\t\t * @type {Tone.Multiply}\n\t\t\t * @private\n\t\t\t */\n\t this._scale = this.output = new Tone.Scale(options.min, options.max);\n\t this._sig.chain(this._exp, this._scale);\n\t };\n\t Tone.extend(Tone.ScaledEnvelope, Tone.Envelope);\n\t /**\n\t\t * the default parameters\n\t\t * @static\n\t\t */\n\t Tone.ScaledEnvelope.defaults = {\n\t 'min': 0,\n\t 'max': 1,\n\t 'exponent': 1\n\t };\n\t /**\n\t\t * The envelope's min output value. This is the value which it\n\t\t * starts at. \n\t\t * @memberOf Tone.ScaledEnvelope#\n\t\t * @type {number}\n\t\t * @name min\n\t\t */\n\t Object.defineProperty(Tone.ScaledEnvelope.prototype, 'min', {\n\t get: function () {\n\t return this._scale.min;\n\t },\n\t set: function (min) {\n\t this._scale.min = min;\n\t }\n\t });\n\t /**\n\t\t * The envelope's max output value. In other words, the value\n\t\t * at the peak of the attack portion of the envelope. \n\t\t * @memberOf Tone.ScaledEnvelope#\n\t\t * @type {number}\n\t\t * @name max\n\t\t */\n\t Object.defineProperty(Tone.ScaledEnvelope.prototype, 'max', {\n\t get: function () {\n\t return this._scale.max;\n\t },\n\t set: function (max) {\n\t this._scale.max = max;\n\t }\n\t });\n\t /**\n\t\t * The envelope's exponent value. \n\t\t * @memberOf Tone.ScaledEnvelope#\n\t\t * @type {number}\n\t\t * @name exponent\n\t\t */\n\t Object.defineProperty(Tone.ScaledEnvelope.prototype, 'exponent', {\n\t get: function () {\n\t return this._exp.value;\n\t },\n\t set: function (exp) {\n\t this._exp.value = exp;\n\t }\n\t });\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.ScaledEnvelope} this\n\t\t */\n\t Tone.ScaledEnvelope.prototype.dispose = function () {\n\t Tone.Envelope.prototype.dispose.call(this);\n\t this._scale.dispose();\n\t this._scale = null;\n\t this._exp.dispose();\n\t this._exp = null;\n\t return this;\n\t };\n\t return Tone.ScaledEnvelope;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.FrequencyEnvelope is a Tone.ScaledEnvelope, but instead of `min` and `max`\n\t\t * it's got a `baseFrequency` and `octaves` parameter. \n\t\t *\n\t\t * @extends {Tone.Envelope}\n\t\t * @constructor\n\t\t * @param {Time|Object} [attack]\tthe attack time in seconds\n\t\t * @param {Time} [decay]\tthe decay time in seconds\n\t\t * @param {number} [sustain] \ta percentage (0-1) of the full amplitude\n\t\t * @param {Time} [release]\tthe release time in seconds\n\t\t * @example\n\t\t * var env = new Tone.FrequencyEnvelope({\n\t\t * \t\"attack\" : 0.2,\n\t\t * \t\"baseFrequency\" : \"C2\",\n\t\t * \t\"octaves\" : 4\n\t\t * });\n\t\t * scaledEnv.connect(oscillator.frequency);\n\t\t */\n\t Tone.FrequencyEnvelope = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'attack',\n\t 'decay',\n\t 'sustain',\n\t 'release'\n\t ], Tone.Envelope.defaults);\n\t Tone.ScaledEnvelope.call(this, options);\n\t options = this.defaultArg(options, Tone.FrequencyEnvelope.defaults);\n\t /**\n\t\t\t * Stores the octave value\n\t\t\t * @type {Positive}\n\t\t\t * @private\n\t\t\t */\n\t this._octaves = options.octaves;\n\t //setup\n\t this.baseFrequency = options.baseFrequency;\n\t this.octaves = options.octaves;\n\t };\n\t Tone.extend(Tone.FrequencyEnvelope, Tone.Envelope);\n\t /**\n\t\t * the default parameters\n\t\t * @static\n\t\t */\n\t Tone.FrequencyEnvelope.defaults = {\n\t 'baseFrequency': 200,\n\t 'octaves': 4,\n\t 'exponent': 2\n\t };\n\t /**\n\t\t * The envelope's mininum output value. This is the value which it\n\t\t * starts at. \n\t\t * @memberOf Tone.FrequencyEnvelope#\n\t\t * @type {Frequency}\n\t\t * @name baseFrequency\n\t\t */\n\t Object.defineProperty(Tone.FrequencyEnvelope.prototype, 'baseFrequency', {\n\t get: function () {\n\t return this._scale.min;\n\t },\n\t set: function (min) {\n\t this._scale.min = this.toFrequency(min);\n\t //also update the octaves\n\t this.octaves = this._octaves;\n\t }\n\t });\n\t /**\n\t\t * The number of octaves above the baseFrequency that the\n\t\t * envelope will scale to.\n\t\t * @memberOf Tone.FrequencyEnvelope#\n\t\t * @type {Positive}\n\t\t * @name octaves\n\t\t */\n\t Object.defineProperty(Tone.FrequencyEnvelope.prototype, 'octaves', {\n\t get: function () {\n\t return this._octaves;\n\t },\n\t set: function (octaves) {\n\t this._octaves = octaves;\n\t this._scale.max = this.baseFrequency * Math.pow(2, octaves);\n\t }\n\t });\n\t /**\n\t\t * The envelope's exponent value. \n\t\t * @memberOf Tone.FrequencyEnvelope#\n\t\t * @type {number}\n\t\t * @name exponent\n\t\t */\n\t Object.defineProperty(Tone.FrequencyEnvelope.prototype, 'exponent', {\n\t get: function () {\n\t return this._exp.value;\n\t },\n\t set: function (exp) {\n\t this._exp.value = exp;\n\t }\n\t });\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.FrequencyEnvelope} this\n\t\t */\n\t Tone.FrequencyEnvelope.prototype.dispose = function () {\n\t Tone.ScaledEnvelope.prototype.dispose.call(this);\n\t return this;\n\t };\n\t return Tone.FrequencyEnvelope;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Gate only passes a signal through when the incoming \n\t\t * signal exceeds a specified threshold. To do this, Gate uses \n\t\t * a Tone.Follower to follow the amplitude of the incoming signal. \n\t\t * A common implementation of this class is a [Noise Gate](https://en.wikipedia.org/wiki/Noise_gate).\n\t\t * \n\t\t * @constructor\n\t\t * @extends {Tone}\n\t\t * @param {Decibels|Object} [threshold] The threshold above which the gate will open. \n\t\t * @param {Time=} attack The follower's attack time\n\t\t * @param {Time=} release The follower's release time\n\t\t * @example\n\t\t * var gate = new Tone.Gate(-30, 0.2, 0.3).toMaster();\n\t\t * var mic = new Tone.UserMedia().connect(gate);\n\t\t * //the gate will only pass through the incoming \n\t\t * //signal when it's louder than -30db\n\t\t */\n\t Tone.Gate = function () {\n\t this.createInsOuts(1, 1);\n\t var options = this.optionsObject(arguments, [\n\t 'threshold',\n\t 'attack',\n\t 'release'\n\t ], Tone.Gate.defaults);\n\t /**\n\t\t\t * @type {Tone.Follower}\n\t\t\t * @private\n\t\t\t */\n\t this._follower = new Tone.Follower(options.attack, options.release);\n\t /**\n\t\t\t * @type {Tone.GreaterThan}\n\t\t\t * @private\n\t\t\t */\n\t this._gt = new Tone.GreaterThan(this.dbToGain(options.threshold));\n\t //the connections\n\t this.input.connect(this.output);\n\t //the control signal\n\t this.input.chain(this._gt, this._follower, this.output.gain);\n\t };\n\t Tone.extend(Tone.Gate);\n\t /**\n\t\t * @const\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.Gate.defaults = {\n\t 'attack': 0.1,\n\t 'release': 0.1,\n\t 'threshold': -40\n\t };\n\t /**\n\t\t * The threshold of the gate in decibels\n\t\t * @memberOf Tone.Gate#\n\t\t * @type {Decibels}\n\t\t * @name threshold\n\t\t */\n\t Object.defineProperty(Tone.Gate.prototype, 'threshold', {\n\t get: function () {\n\t return this.gainToDb(this._gt.value);\n\t },\n\t set: function (thresh) {\n\t this._gt.value = this.dbToGain(thresh);\n\t }\n\t });\n\t /**\n\t\t * The attack speed of the gate\n\t\t * @memberOf Tone.Gate#\n\t\t * @type {Time}\n\t\t * @name attack\n\t\t */\n\t Object.defineProperty(Tone.Gate.prototype, 'attack', {\n\t get: function () {\n\t return this._follower.attack;\n\t },\n\t set: function (attackTime) {\n\t this._follower.attack = attackTime;\n\t }\n\t });\n\t /**\n\t\t * The release speed of the gate\n\t\t * @memberOf Tone.Gate#\n\t\t * @type {Time}\n\t\t * @name release\n\t\t */\n\t Object.defineProperty(Tone.Gate.prototype, 'release', {\n\t get: function () {\n\t return this._follower.release;\n\t },\n\t set: function (releaseTime) {\n\t this._follower.release = releaseTime;\n\t }\n\t });\n\t /**\n\t\t * Clean up. \n\t\t * @returns {Tone.Gate} this\n\t\t */\n\t Tone.Gate.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._follower.dispose();\n\t this._gt.dispose();\n\t this._follower = null;\n\t this._gt = null;\n\t return this;\n\t };\n\t return Tone.Gate;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class A Timeline State. Provides the methods: <code>setStateAtTime(\"state\", time)</code>\n\t\t * and <code>getValueAtTime(time)</code>.\n\t\t *\n\t\t * @extends {Tone.Timeline}\n\t\t * @param {String} initial The initial state of the TimelineState. \n\t\t * Defaults to <code>undefined</code>\n\t\t */\n\t Tone.TimelineState = function (initial) {\n\t Tone.Timeline.call(this);\n\t /**\n\t\t\t * The initial state\n\t\t\t * @private\n\t\t\t * @type {String}\n\t\t\t */\n\t this._initial = initial;\n\t };\n\t Tone.extend(Tone.TimelineState, Tone.Timeline);\n\t /**\n\t\t * Returns the scheduled state scheduled before or at\n\t\t * the given time.\n\t\t * @param {Number} time The time to query.\n\t\t * @return {String} The name of the state input in setStateAtTime.\n\t\t */\n\t Tone.TimelineState.prototype.getValueAtTime = function (time) {\n\t var event = this.get(time);\n\t if (event !== null) {\n\t return event.state;\n\t } else {\n\t return this._initial;\n\t }\n\t };\n\t /**\n\t\t * Returns the scheduled state scheduled before or at\n\t\t * the given time.\n\t\t * @param {String} state The name of the state to set.\n\t\t * @param {Number} time The time to query.\n\t\t */\n\t Tone.TimelineState.prototype.setStateAtTime = function (state, time) {\n\t this.add({\n\t 'state': state,\n\t 'time': time\n\t });\n\t };\n\t return Tone.TimelineState;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class A sample accurate clock which provides a callback at the given rate. \n\t\t * While the callback is not sample-accurate (it is still susceptible to\n\t\t * loose JS timing), the time passed in as the argument to the callback\n\t\t * is precise. For most applications, it is better to use Tone.Transport\n\t\t * instead of the Clock by itself since you can synchronize multiple callbacks.\n\t\t *\n\t\t * \t@constructor\n\t\t * @extends {Tone.Emitter}\n\t\t * \t@param {function} callback The callback to be invoked with the time of the audio event\n\t\t * \t@param {Frequency} frequency The rate of the callback\n\t\t * \t@example\n\t\t * //the callback will be invoked approximately once a second\n\t\t * //and will print the time exactly once a second apart.\n\t\t * var clock = new Tone.Clock(function(time){\n\t\t * \tconsole.log(time);\n\t\t * }, 1);\n\t\t */\n\t Tone.Clock = function () {\n\t Tone.Emitter.call(this);\n\t var options = this.optionsObject(arguments, [\n\t 'callback',\n\t 'frequency'\n\t ], Tone.Clock.defaults);\n\t /**\n\t\t\t * The callback function to invoke at the scheduled tick.\n\t\t\t * @type {Function}\n\t\t\t */\n\t this.callback = options.callback;\n\t /**\n\t\t\t * The next time the callback is scheduled.\n\t\t\t * @type {Number}\n\t\t\t * @private\n\t\t\t */\n\t this._nextTick = 0;\n\t /**\n\t\t\t * The last state of the clock.\n\t\t\t * @type {State}\n\t\t\t * @private\n\t\t\t */\n\t this._lastState = Tone.State.Stopped;\n\t /**\n\t\t\t * The rate the callback function should be invoked. \n\t\t\t * @type {BPM}\n\t\t\t * @signal\n\t\t\t */\n\t this.frequency = new Tone.TimelineSignal(options.frequency, Tone.Type.Frequency);\n\t this._readOnly('frequency');\n\t /**\n\t\t\t * The number of times the callback was invoked. Starts counting at 0\n\t\t\t * and increments after the callback was invoked. \n\t\t\t * @type {Ticks}\n\t\t\t * @readOnly\n\t\t\t */\n\t this.ticks = 0;\n\t /**\n\t\t\t * The state timeline\n\t\t\t * @type {Tone.TimelineState}\n\t\t\t * @private\n\t\t\t */\n\t this._state = new Tone.TimelineState(Tone.State.Stopped);\n\t /**\n\t\t\t * The loop function bound to its context. \n\t\t\t * This is necessary to remove the event in the end.\n\t\t\t * @type {Function}\n\t\t\t * @private\n\t\t\t */\n\t this._boundLoop = this._loop.bind(this);\n\t //bind a callback to the worker thread\n\t this.context.on('tick', this._boundLoop);\n\t };\n\t Tone.extend(Tone.Clock, Tone.Emitter);\n\t /**\n\t\t * The defaults\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.Clock.defaults = {\n\t 'callback': Tone.noOp,\n\t 'frequency': 1,\n\t 'lookAhead': 'auto'\n\t };\n\t /**\n\t\t * Returns the playback state of the source, either \"started\", \"stopped\" or \"paused\".\n\t\t * @type {Tone.State}\n\t\t * @readOnly\n\t\t * @memberOf Tone.Clock#\n\t\t * @name state\n\t\t */\n\t Object.defineProperty(Tone.Clock.prototype, 'state', {\n\t get: function () {\n\t return this._state.getValueAtTime(this.now());\n\t }\n\t });\n\t /**\n\t\t * Start the clock at the given time. Optionally pass in an offset\n\t\t * of where to start the tick counter from.\n\t\t * @param {Time} time The time the clock should start\n\t\t * @param {Ticks=} offset Where the tick counter starts counting from.\n\t\t * @return {Tone.Clock} this\n\t\t */\n\t Tone.Clock.prototype.start = function (time, offset) {\n\t time = this.toSeconds(time);\n\t if (this._state.getValueAtTime(time) !== Tone.State.Started) {\n\t this._state.add({\n\t 'state': Tone.State.Started,\n\t 'time': time,\n\t 'offset': offset\n\t });\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Stop the clock. Stopping the clock resets the tick counter to 0.\n\t\t * @param {Time} [time=now] The time when the clock should stop.\n\t\t * @returns {Tone.Clock} this\n\t\t * @example\n\t\t * clock.stop();\n\t\t */\n\t Tone.Clock.prototype.stop = function (time) {\n\t time = this.toSeconds(time);\n\t this._state.cancel(time);\n\t this._state.setStateAtTime(Tone.State.Stopped, time);\n\t return this;\n\t };\n\t /**\n\t\t * Pause the clock. Pausing does not reset the tick counter.\n\t\t * @param {Time} [time=now] The time when the clock should stop.\n\t\t * @returns {Tone.Clock} this\n\t\t */\n\t Tone.Clock.prototype.pause = function (time) {\n\t time = this.toSeconds(time);\n\t if (this._state.getValueAtTime(time) === Tone.State.Started) {\n\t this._state.setStateAtTime(Tone.State.Paused, time);\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * The scheduling loop.\n\t\t * @param {Number} time The current page time starting from 0\n\t\t * when the page was loaded.\n\t\t * @private\n\t\t */\n\t Tone.Clock.prototype._loop = function () {\n\t //get the frequency value to compute the value of the next loop\n\t var now = this.now();\n\t //if it's started\n\t var lookAhead = this.context.lookAhead;\n\t var updateInterval = this.context.updateInterval;\n\t var lagCompensation = this.context.lag * 2;\n\t var loopInterval = now + lookAhead + updateInterval + lagCompensation;\n\t while (loopInterval > this._nextTick && this._state) {\n\t var currentState = this._state.getValueAtTime(this._nextTick);\n\t if (currentState !== this._lastState) {\n\t this._lastState = currentState;\n\t var event = this._state.get(this._nextTick);\n\t // emit an event\n\t if (currentState === Tone.State.Started) {\n\t //correct the time\n\t this._nextTick = event.time;\n\t if (!this.isUndef(event.offset)) {\n\t this.ticks = event.offset;\n\t }\n\t this.emit('start', event.time, this.ticks);\n\t } else if (currentState === Tone.State.Stopped) {\n\t this.ticks = 0;\n\t this.emit('stop', event.time);\n\t } else if (currentState === Tone.State.Paused) {\n\t this.emit('pause', event.time);\n\t }\n\t }\n\t var tickTime = this._nextTick;\n\t if (this.frequency) {\n\t this._nextTick += 1 / this.frequency.getValueAtTime(this._nextTick);\n\t if (currentState === Tone.State.Started) {\n\t this.callback(tickTime);\n\t this.ticks++;\n\t }\n\t }\n\t }\n\t };\n\t /**\n\t\t * Returns the scheduled state at the given time.\n\t\t * @param {Time} time The time to query.\n\t\t * @return {String} The name of the state input in setStateAtTime.\n\t\t * @example\n\t\t * clock.start(\"+0.1\");\n\t\t * clock.getStateAtTime(\"+0.1\"); //returns \"started\"\n\t\t */\n\t Tone.Clock.prototype.getStateAtTime = function (time) {\n\t time = this.toSeconds(time);\n\t return this._state.getValueAtTime(time);\n\t };\n\t /**\n\t\t * Clean up\n\t\t * @returns {Tone.Clock} this\n\t\t */\n\t Tone.Clock.prototype.dispose = function () {\n\t Tone.Emitter.prototype.dispose.call(this);\n\t this.context.off('tick', this._boundLoop);\n\t this._writable('frequency');\n\t this.frequency.dispose();\n\t this.frequency = null;\n\t this._boundLoop = null;\n\t this._nextTick = Infinity;\n\t this.callback = null;\n\t this._state.dispose();\n\t this._state = null;\n\t };\n\t return Tone.Clock;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Similar to Tone.Timeline, but all events represent\n\t\t * intervals with both \"time\" and \"duration\" times. The \n\t\t * events are placed in a tree structure optimized\n\t\t * for querying an intersection point with the timeline\n\t\t * events. Internally uses an [Interval Tree](https://en.wikipedia.org/wiki/Interval_tree)\n\t\t * to represent the data.\n\t\t * @extends {Tone}\n\t\t */\n\t Tone.IntervalTimeline = function () {\n\t /**\n\t\t\t * The root node of the inteval tree\n\t\t\t * @type {IntervalNode}\n\t\t\t * @private\n\t\t\t */\n\t this._root = null;\n\t /**\n\t\t\t * Keep track of the length of the timeline.\n\t\t\t * @type {Number}\n\t\t\t * @private\n\t\t\t */\n\t this._length = 0;\n\t };\n\t Tone.extend(Tone.IntervalTimeline);\n\t /**\n\t\t * The event to add to the timeline. All events must \n\t\t * have a time and duration value\n\t\t * @param {Object} event The event to add to the timeline\n\t\t * @return {Tone.IntervalTimeline} this\n\t\t */\n\t Tone.IntervalTimeline.prototype.add = function (event) {\n\t if (this.isUndef(event.time) || this.isUndef(event.duration)) {\n\t throw new Error('Tone.IntervalTimeline: events must have time and duration parameters');\n\t }\n\t var node = new IntervalNode(event.time, event.time + event.duration, event);\n\t if (this._root === null) {\n\t this._root = node;\n\t } else {\n\t this._root.insert(node);\n\t }\n\t this._length++;\n\t // Restructure tree to be balanced\n\t while (node !== null) {\n\t node.updateHeight();\n\t node.updateMax();\n\t this._rebalance(node);\n\t node = node.parent;\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Remove an event from the timeline.\n\t\t * @param {Object} event The event to remove from the timeline\n\t\t * @return {Tone.IntervalTimeline} this\n\t\t */\n\t Tone.IntervalTimeline.prototype.remove = function (event) {\n\t if (this._root !== null) {\n\t var results = [];\n\t this._root.search(event.time, results);\n\t for (var i = 0; i < results.length; i++) {\n\t var node = results[i];\n\t if (node.event === event) {\n\t this._removeNode(node);\n\t this._length--;\n\t break;\n\t }\n\t }\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * The number of items in the timeline.\n\t\t * @type {Number}\n\t\t * @memberOf Tone.IntervalTimeline#\n\t\t * @name length\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone.IntervalTimeline.prototype, 'length', {\n\t get: function () {\n\t return this._length;\n\t }\n\t });\n\t /**\n\t\t * Remove events whose time time is after the given time\n\t\t * @param {Number} time The time to query.\n\t\t * @returns {Tone.IntervalTimeline} this\n\t\t */\n\t Tone.IntervalTimeline.prototype.cancel = function (after) {\n\t this.forEachAfter(after, function (event) {\n\t this.remove(event);\n\t }.bind(this));\n\t return this;\n\t };\n\t /**\n\t\t * Set the root node as the given node\n\t\t * @param {IntervalNode} node\n\t\t * @private\n\t\t */\n\t Tone.IntervalTimeline.prototype._setRoot = function (node) {\n\t this._root = node;\n\t if (this._root !== null) {\n\t this._root.parent = null;\n\t }\n\t };\n\t /**\n\t\t * Replace the references to the node in the node's parent\n\t\t * with the replacement node.\n\t\t * @param {IntervalNode} node \n\t\t * @param {IntervalNode} replacement \n\t\t * @private\n\t\t */\n\t Tone.IntervalTimeline.prototype._replaceNodeInParent = function (node, replacement) {\n\t if (node.parent !== null) {\n\t if (node.isLeftChild()) {\n\t node.parent.left = replacement;\n\t } else {\n\t node.parent.right = replacement;\n\t }\n\t this._rebalance(node.parent);\n\t } else {\n\t this._setRoot(replacement);\n\t }\n\t };\n\t /**\n\t\t * Remove the node from the tree and replace it with \n\t\t * a successor which follows the schema.\n\t\t * @param {IntervalNode} node\n\t\t * @private\n\t\t */\n\t Tone.IntervalTimeline.prototype._removeNode = function (node) {\n\t if (node.left === null && node.right === null) {\n\t this._replaceNodeInParent(node, null);\n\t } else if (node.right === null) {\n\t this._replaceNodeInParent(node, node.left);\n\t } else if (node.left === null) {\n\t this._replaceNodeInParent(node, node.right);\n\t } else {\n\t var balance = node.getBalance();\n\t var replacement, temp;\n\t if (balance > 0) {\n\t if (node.left.right === null) {\n\t replacement = node.left;\n\t replacement.right = node.right;\n\t temp = replacement;\n\t } else {\n\t replacement = node.left.right;\n\t while (replacement.right !== null) {\n\t replacement = replacement.right;\n\t }\n\t replacement.parent.right = replacement.left;\n\t temp = replacement.parent;\n\t replacement.left = node.left;\n\t replacement.right = node.right;\n\t }\n\t } else {\n\t if (node.right.left === null) {\n\t replacement = node.right;\n\t replacement.left = node.left;\n\t temp = replacement;\n\t } else {\n\t replacement = node.right.left;\n\t while (replacement.left !== null) {\n\t replacement = replacement.left;\n\t }\n\t replacement.parent = replacement.parent;\n\t replacement.parent.left = replacement.right;\n\t temp = replacement.parent;\n\t replacement.left = node.left;\n\t replacement.right = node.right;\n\t }\n\t }\n\t if (node.parent !== null) {\n\t if (node.isLeftChild()) {\n\t node.parent.left = replacement;\n\t } else {\n\t node.parent.right = replacement;\n\t }\n\t } else {\n\t this._setRoot(replacement);\n\t }\n\t // this._replaceNodeInParent(node, replacement);\n\t this._rebalance(temp);\n\t }\n\t node.dispose();\n\t };\n\t /**\n\t\t * Rotate the tree to the left\n\t\t * @param {IntervalNode} node\n\t\t * @private\n\t\t */\n\t Tone.IntervalTimeline.prototype._rotateLeft = function (node) {\n\t var parent = node.parent;\n\t var isLeftChild = node.isLeftChild();\n\t // Make node.right the new root of this sub tree (instead of node)\n\t var pivotNode = node.right;\n\t node.right = pivotNode.left;\n\t pivotNode.left = node;\n\t if (parent !== null) {\n\t if (isLeftChild) {\n\t parent.left = pivotNode;\n\t } else {\n\t parent.right = pivotNode;\n\t }\n\t } else {\n\t this._setRoot(pivotNode);\n\t }\n\t };\n\t /**\n\t\t * Rotate the tree to the right\n\t\t * @param {IntervalNode} node\n\t\t * @private\n\t\t */\n\t Tone.IntervalTimeline.prototype._rotateRight = function (node) {\n\t var parent = node.parent;\n\t var isLeftChild = node.isLeftChild();\n\t // Make node.left the new root of this sub tree (instead of node)\n\t var pivotNode = node.left;\n\t node.left = pivotNode.right;\n\t pivotNode.right = node;\n\t if (parent !== null) {\n\t if (isLeftChild) {\n\t parent.left = pivotNode;\n\t } else {\n\t parent.right = pivotNode;\n\t }\n\t } else {\n\t this._setRoot(pivotNode);\n\t }\n\t };\n\t /**\n\t\t * Balance the BST\n\t\t * @param {IntervalNode} node\n\t\t * @private\n\t\t */\n\t Tone.IntervalTimeline.prototype._rebalance = function (node) {\n\t var balance = node.getBalance();\n\t if (balance > 1) {\n\t if (node.left.getBalance() < 0) {\n\t this._rotateLeft(node.left);\n\t } else {\n\t this._rotateRight(node);\n\t }\n\t } else if (balance < -1) {\n\t if (node.right.getBalance() > 0) {\n\t this._rotateRight(node.right);\n\t } else {\n\t this._rotateLeft(node);\n\t }\n\t }\n\t };\n\t /**\n\t\t * Get an event whose time and duration span the give time. Will\n\t\t * return the match whose \"time\" value is closest to the given time.\n\t\t * @param {Object} event The event to add to the timeline\n\t\t * @return {Object} The event which spans the desired time\n\t\t */\n\t Tone.IntervalTimeline.prototype.get = function (time) {\n\t if (this._root !== null) {\n\t var results = [];\n\t this._root.search(time, results);\n\t if (results.length > 0) {\n\t var max = results[0];\n\t for (var i = 1; i < results.length; i++) {\n\t if (results[i].low > max.low) {\n\t max = results[i];\n\t }\n\t }\n\t return max.event;\n\t }\n\t }\n\t return null;\n\t };\n\t /**\n\t\t * Iterate over everything in the timeline.\n\t\t * @param {Function} callback The callback to invoke with every item\n\t\t * @returns {Tone.IntervalTimeline} this\n\t\t */\n\t Tone.IntervalTimeline.prototype.forEach = function (callback) {\n\t if (this._root !== null) {\n\t var allNodes = [];\n\t if (this._root !== null) {\n\t this._root.traverse(function (node) {\n\t allNodes.push(node);\n\t });\n\t }\n\t for (var i = 0; i < allNodes.length; i++) {\n\t var ev = allNodes[i].event;\n\t if (ev) {\n\t callback(ev);\n\t }\n\t }\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Iterate over everything in the array in which the given time\n\t\t * overlaps with the time and duration time of the event.\n\t\t * @param {Number} time The time to check if items are overlapping\n\t\t * @param {Function} callback The callback to invoke with every item\n\t\t * @returns {Tone.IntervalTimeline} this\n\t\t */\n\t Tone.IntervalTimeline.prototype.forEachAtTime = function (time, callback) {\n\t if (this._root !== null) {\n\t var results = [];\n\t this._root.search(time, results);\n\t for (var i = results.length - 1; i >= 0; i--) {\n\t var ev = results[i].event;\n\t if (ev) {\n\t callback(ev);\n\t }\n\t }\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Iterate over everything in the array in which the time is greater\n\t\t * than the given time.\n\t\t * @param {Number} time The time to check if items are before\n\t\t * @param {Function} callback The callback to invoke with every item\n\t\t * @returns {Tone.IntervalTimeline} this\n\t\t */\n\t Tone.IntervalTimeline.prototype.forEachAfter = function (time, callback) {\n\t if (this._root !== null) {\n\t var results = [];\n\t this._root.searchAfter(time, results);\n\t for (var i = results.length - 1; i >= 0; i--) {\n\t var ev = results[i].event;\n\t if (ev) {\n\t callback(ev);\n\t }\n\t }\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Clean up\n\t\t * @return {Tone.IntervalTimeline} this\n\t\t */\n\t Tone.IntervalTimeline.prototype.dispose = function () {\n\t var allNodes = [];\n\t if (this._root !== null) {\n\t this._root.traverse(function (node) {\n\t allNodes.push(node);\n\t });\n\t }\n\t for (var i = 0; i < allNodes.length; i++) {\n\t allNodes[i].dispose();\n\t }\n\t allNodes = null;\n\t this._root = null;\n\t return this;\n\t };\n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tINTERVAL NODE HELPER\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * Represents a node in the binary search tree, with the addition\n\t\t * of a \"high\" value which keeps track of the highest value of\n\t\t * its children. \n\t\t * References: \n\t\t * https://brooknovak.wordpress.com/2013/12/07/augmented-interval-tree-in-c/\n\t\t * http://www.mif.vu.lt/~valdas/ALGORITMAI/LITERATURA/Cormen/Cormen.pdf\n\t\t * @param {Number} low\n\t\t * @param {Number} high\n\t\t * @private\n\t\t */\n\t var IntervalNode = function (low, high, event) {\n\t //the event container\n\t this.event = event;\n\t //the low value\n\t this.low = low;\n\t //the high value\n\t this.high = high;\n\t //the high value for this and all child nodes\n\t this.max = this.high;\n\t //the nodes to the left\n\t this._left = null;\n\t //the nodes to the right\n\t this._right = null;\n\t //the parent node\n\t this.parent = null;\n\t //the number of child nodes\n\t this.height = 0;\n\t };\n\t /** \n\t\t * Insert a node into the correct spot in the tree\n\t\t * @param {IntervalNode} node\n\t\t */\n\t IntervalNode.prototype.insert = function (node) {\n\t if (node.low <= this.low) {\n\t if (this.left === null) {\n\t this.left = node;\n\t } else {\n\t this.left.insert(node);\n\t }\n\t } else {\n\t if (this.right === null) {\n\t this.right = node;\n\t } else {\n\t this.right.insert(node);\n\t }\n\t }\n\t };\n\t /**\n\t\t * Search the tree for nodes which overlap \n\t\t * with the given point\n\t\t * @param {Number} point The point to query\n\t\t * @param {Array} results The array to put the results\n\t\t */\n\t IntervalNode.prototype.search = function (point, results) {\n\t // If p is to the right of the rightmost point of any interval\n\t // in this node and all children, there won't be any matches.\n\t if (point > this.max) {\n\t return;\n\t }\n\t // Search left children\n\t if (this.left !== null) {\n\t this.left.search(point, results);\n\t }\n\t // Check this node\n\t if (this.low <= point && this.high > point) {\n\t results.push(this);\n\t }\n\t // If p is to the left of the time of this interval,\n\t // then it can't be in any child to the right.\n\t if (this.low > point) {\n\t return;\n\t }\n\t // Search right children\n\t if (this.right !== null) {\n\t this.right.search(point, results);\n\t }\n\t };\n\t /**\n\t\t * Search the tree for nodes which are less \n\t\t * than the given point\n\t\t * @param {Number} point The point to query\n\t\t * @param {Array} results The array to put the results\n\t\t */\n\t IntervalNode.prototype.searchAfter = function (point, results) {\n\t // Check this node\n\t if (this.low >= point) {\n\t results.push(this);\n\t if (this.left !== null) {\n\t this.left.searchAfter(point, results);\n\t }\n\t }\n\t // search the right side\n\t if (this.right !== null) {\n\t this.right.searchAfter(point, results);\n\t }\n\t };\n\t /**\n\t\t * Invoke the callback on this element and both it's branches\n\t\t * @param {Function} callback\n\t\t */\n\t IntervalNode.prototype.traverse = function (callback) {\n\t callback(this);\n\t if (this.left !== null) {\n\t this.left.traverse(callback);\n\t }\n\t if (this.right !== null) {\n\t this.right.traverse(callback);\n\t }\n\t };\n\t /**\n\t\t * Update the height of the node\n\t\t */\n\t IntervalNode.prototype.updateHeight = function () {\n\t if (this.left !== null && this.right !== null) {\n\t this.height = Math.max(this.left.height, this.right.height) + 1;\n\t } else if (this.right !== null) {\n\t this.height = this.right.height + 1;\n\t } else if (this.left !== null) {\n\t this.height = this.left.height + 1;\n\t } else {\n\t this.height = 0;\n\t }\n\t };\n\t /**\n\t\t * Update the height of the node\n\t\t */\n\t IntervalNode.prototype.updateMax = function () {\n\t this.max = this.high;\n\t if (this.left !== null) {\n\t this.max = Math.max(this.max, this.left.max);\n\t }\n\t if (this.right !== null) {\n\t this.max = Math.max(this.max, this.right.max);\n\t }\n\t };\n\t /**\n\t\t * The balance is how the leafs are distributed on the node\n\t\t * @return {Number} Negative numbers are balanced to the right\n\t\t */\n\t IntervalNode.prototype.getBalance = function () {\n\t var balance = 0;\n\t if (this.left !== null && this.right !== null) {\n\t balance = this.left.height - this.right.height;\n\t } else if (this.left !== null) {\n\t balance = this.left.height + 1;\n\t } else if (this.right !== null) {\n\t balance = -(this.right.height + 1);\n\t }\n\t return balance;\n\t };\n\t /**\n\t\t * @returns {Boolean} true if this node is the left child\n\t\t * of its parent\n\t\t */\n\t IntervalNode.prototype.isLeftChild = function () {\n\t return this.parent !== null && this.parent.left === this;\n\t };\n\t /**\n\t\t * get/set the left node\n\t\t * @type {IntervalNode}\n\t\t */\n\t Object.defineProperty(IntervalNode.prototype, 'left', {\n\t get: function () {\n\t return this._left;\n\t },\n\t set: function (node) {\n\t this._left = node;\n\t if (node !== null) {\n\t node.parent = this;\n\t }\n\t this.updateHeight();\n\t this.updateMax();\n\t }\n\t });\n\t /**\n\t\t * get/set the right node\n\t\t * @type {IntervalNode}\n\t\t */\n\t Object.defineProperty(IntervalNode.prototype, 'right', {\n\t get: function () {\n\t return this._right;\n\t },\n\t set: function (node) {\n\t this._right = node;\n\t if (node !== null) {\n\t node.parent = this;\n\t }\n\t this.updateHeight();\n\t this.updateMax();\n\t }\n\t });\n\t /**\n\t\t * null out references.\n\t\t */\n\t IntervalNode.prototype.dispose = function () {\n\t this.parent = null;\n\t this._left = null;\n\t this._right = null;\n\t this.event = null;\n\t };\n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tEND INTERVAL NODE HELPER\n\t ///////////////////////////////////////////////////////////////////////////\n\t return Tone.IntervalTimeline;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Transport for timing musical events.\n\t\t * Supports tempo curves and time changes. Unlike browser-based timing (setInterval, requestAnimationFrame)\n\t\t * Tone.Transport timing events pass in the exact time of the scheduled event\n\t\t * in the argument of the callback function. Pass that time value to the object\n\t\t * you're scheduling. <br><br>\n\t\t * A single transport is created for you when the library is initialized. \n\t\t * <br><br>\n\t\t * The transport emits the events: \"start\", \"stop\", \"pause\", and \"loop\" which are\n\t\t * called with the time of that event as the argument. \n\t\t *\n\t\t * @extends {Tone.Emitter}\n\t\t * @singleton\n\t\t * @example\n\t\t * //repeated event every 8th note\n\t\t * Tone.Transport.scheduleRepeat(function(time){\n\t\t * \t//do something with the time\n\t\t * }, \"8n\");\n\t\t * @example\n\t\t * //schedule an event on the 16th measure\n\t\t * Tone.Transport.schedule(function(time){\n\t\t * \t//do something with the time\n\t\t * }, \"16:0:0\");\n\t\t */\n\t Tone.Transport = function () {\n\t Tone.Emitter.call(this);\n\t ///////////////////////////////////////////////////////////////////////\n\t //\tLOOPING\n\t //////////////////////////////////////////////////////////////////////\n\t /** \n\t\t\t * \tIf the transport loops or not.\n\t\t\t * @type {boolean}\n\t\t\t */\n\t this.loop = false;\n\t /** \n\t\t\t * \tThe loop start position in ticks\n\t\t\t * @type {Ticks}\n\t\t\t * @private\n\t\t\t */\n\t this._loopStart = 0;\n\t /** \n\t\t\t * \tThe loop end position in ticks\n\t\t\t * @type {Ticks}\n\t\t\t * @private\n\t\t\t */\n\t this._loopEnd = 0;\n\t ///////////////////////////////////////////////////////////////////////\n\t //\tCLOCK/TEMPO\n\t //////////////////////////////////////////////////////////////////////\n\t /**\n\t\t\t * Pulses per quarter is the number of ticks per quarter note.\n\t\t\t * @private\n\t\t\t * @type {Number}\n\t\t\t */\n\t this._ppq = TransportConstructor.defaults.PPQ;\n\t /**\n\t\t\t * watches the main oscillator for timing ticks\n\t\t\t * initially starts at 120bpm\n\t\t\t * @private\n\t\t\t * @type {Tone.Clock}\n\t\t\t */\n\t this._clock = new Tone.Clock({\n\t 'callback': this._processTick.bind(this),\n\t 'frequency': 0\n\t });\n\t this._bindClockEvents();\n\t /**\n\t\t\t * The Beats Per Minute of the Transport. \n\t\t\t * @type {BPM}\n\t\t\t * @signal\n\t\t\t * @example\n\t\t\t * Tone.Transport.bpm.value = 80;\n\t\t\t * //ramp the bpm to 120 over 10 seconds\n\t\t\t * Tone.Transport.bpm.rampTo(120, 10);\n\t\t\t */\n\t this.bpm = this._clock.frequency;\n\t this.bpm._toUnits = this._toUnits.bind(this);\n\t this.bpm._fromUnits = this._fromUnits.bind(this);\n\t this.bpm.units = Tone.Type.BPM;\n\t this.bpm.value = TransportConstructor.defaults.bpm;\n\t this._readOnly('bpm');\n\t /**\n\t\t\t * The time signature, or more accurately the numerator\n\t\t\t * of the time signature over a denominator of 4. \n\t\t\t * @type {Number}\n\t\t\t * @private\n\t\t\t */\n\t this._timeSignature = TransportConstructor.defaults.timeSignature;\n\t ///////////////////////////////////////////////////////////////////////\n\t //\tTIMELINE EVENTS\n\t //////////////////////////////////////////////////////////////////////\n\t /**\n\t\t\t * All the events in an object to keep track by ID\n\t\t\t * @type {Object}\n\t\t\t * @private\n\t\t\t */\n\t this._scheduledEvents = {};\n\t /**\n\t\t\t * The event ID counter\n\t\t\t * @type {Number}\n\t\t\t * @private\n\t\t\t */\n\t this._eventID = 0;\n\t /**\n\t\t\t * \tThe scheduled events.\n\t\t\t * @type {Tone.Timeline}\n\t\t\t * @private\n\t\t\t */\n\t this._timeline = new Tone.Timeline();\n\t /**\n\t\t\t * Repeated events\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._repeatedEvents = new Tone.IntervalTimeline();\n\t /**\n\t\t\t * Events that occur once\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._onceEvents = new Tone.Timeline();\n\t /** \n\t\t\t * All of the synced Signals\n\t\t\t * @private \n\t\t\t * @type {Array}\n\t\t\t */\n\t this._syncedSignals = [];\n\t ///////////////////////////////////////////////////////////////////////\n\t //\tSWING\n\t //////////////////////////////////////////////////////////////////////\n\t /**\n\t\t\t * The subdivision of the swing\n\t\t\t * @type {Ticks}\n\t\t\t * @private\n\t\t\t */\n\t this._swingTicks = TransportConstructor.defaults.PPQ / 2;\n\t //8n\n\t /**\n\t\t\t * The swing amount\n\t\t\t * @type {NormalRange}\n\t\t\t * @private\n\t\t\t */\n\t this._swingAmount = 0;\n\t };\n\t Tone.extend(Tone.Transport, Tone.Emitter);\n\t /**\n\t\t * the defaults\n\t\t * @type {Object}\n\t\t * @const\n\t\t * @static\n\t\t */\n\t Tone.Transport.defaults = {\n\t 'bpm': 120,\n\t 'swing': 0,\n\t 'swingSubdivision': '8n',\n\t 'timeSignature': 4,\n\t 'loopStart': 0,\n\t 'loopEnd': '4m',\n\t 'PPQ': 192\n\t };\n\t ///////////////////////////////////////////////////////////////////////////////\n\t //\tTICKS\n\t ///////////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * called on every tick\n\t\t * @param {number} tickTime clock relative tick time\n\t\t * @private\n\t\t */\n\t Tone.Transport.prototype._processTick = function (tickTime) {\n\t var ticks = this._clock.ticks;\n\t //handle swing\n\t if (this._swingAmount > 0 && ticks % this._ppq !== 0 && //not on a downbeat\n\t ticks % (this._swingTicks * 2) !== 0) {\n\t //add some swing\n\t var progress = ticks % (this._swingTicks * 2) / (this._swingTicks * 2);\n\t var amount = Math.sin(progress * Math.PI) * this._swingAmount;\n\t tickTime += Tone.Time(this._swingTicks * 2 / 3, 'i') * amount;\n\t }\n\t //do the loop test\n\t if (this.loop) {\n\t if (ticks === this._loopEnd) {\n\t this.emit('loopEnd', tickTime);\n\t this._clock.ticks = this._loopStart;\n\t ticks = this._loopStart;\n\t this.emit('loopStart', tickTime, this.seconds);\n\t this.emit('loop', tickTime);\n\t }\n\t }\n\t //process the single occurrence events\n\t this._onceEvents.forEachBefore(ticks, function (event) {\n\t event.callback(tickTime);\n\t //remove the event\n\t delete this._scheduledEvents[event.id.toString()];\n\t }.bind(this));\n\t //and clear the single occurrence timeline\n\t this._onceEvents.cancelBefore(ticks);\n\t //fire the next tick events if their time has come\n\t this._timeline.forEachAtTime(ticks, function (event) {\n\t event.callback(tickTime);\n\t });\n\t //process the repeated events\n\t this._repeatedEvents.forEachAtTime(ticks, function (event) {\n\t if ((ticks - event.time) % event.interval === 0) {\n\t event.callback(tickTime);\n\t }\n\t });\n\t };\n\t ///////////////////////////////////////////////////////////////////////////////\n\t //\tSCHEDULABLE EVENTS\n\t ///////////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * Schedule an event along the timeline.\n\t\t * @param {Function} callback The callback to be invoked at the time.\n\t\t * @param {TransportTime} time The time to invoke the callback at.\n\t\t * @return {Number} The id of the event which can be used for canceling the event. \n\t\t * @example\n\t\t * //trigger the callback when the Transport reaches the desired time\n\t\t * Tone.Transport.schedule(function(time){\n\t\t * \tenvelope.triggerAttack(time);\n\t\t * }, \"128i\");\n\t\t */\n\t Tone.Transport.prototype.schedule = function (callback, time) {\n\t var event = {\n\t 'time': this.toTicks(time),\n\t 'callback': callback\n\t };\n\t var id = this._eventID++;\n\t this._scheduledEvents[id.toString()] = {\n\t 'event': event,\n\t 'timeline': this._timeline\n\t };\n\t this._timeline.add(event);\n\t return id;\n\t };\n\t /**\n\t\t * Schedule a repeated event along the timeline. The event will fire\n\t\t * at the `interval` starting at the `startTime` and for the specified\n\t\t * `duration`. \n\t\t * @param {Function} callback The callback to invoke.\n\t\t * @param {Time} interval The duration between successive\n\t\t * callbacks.\n\t\t * @param {TimelinePosition=} startTime When along the timeline the events should\n\t\t * start being invoked.\n\t\t * @param {Time} [duration=Infinity] How long the event should repeat. \n\t\t * @return {Number} The ID of the scheduled event. Use this to cancel\n\t\t * the event. \n\t\t * @example\n\t\t * //a callback invoked every eighth note after the first measure\n\t\t * Tone.Transport.scheduleRepeat(callback, \"8n\", \"1m\");\n\t\t */\n\t Tone.Transport.prototype.scheduleRepeat = function (callback, interval, startTime, duration) {\n\t if (interval <= 0) {\n\t throw new Error('Tone.Transport: repeat events must have an interval larger than 0');\n\t }\n\t var event = {\n\t 'time': this.toTicks(startTime),\n\t 'duration': this.toTicks(this.defaultArg(duration, Infinity)),\n\t 'interval': this.toTicks(interval),\n\t 'callback': callback\n\t };\n\t var id = this._eventID++;\n\t this._scheduledEvents[id.toString()] = {\n\t 'event': event,\n\t 'timeline': this._repeatedEvents\n\t };\n\t this._repeatedEvents.add(event);\n\t return id;\n\t };\n\t /**\n\t\t * Schedule an event that will be removed after it is invoked. \n\t\t * Note that if the given time is less than the current transport time, \n\t\t * the event will be invoked immediately. \n\t\t * @param {Function} callback The callback to invoke once.\n\t\t * @param {TransportTime} time The time the callback should be invoked.\n\t\t * @returns {Number} The ID of the scheduled event. \n\t\t */\n\t Tone.Transport.prototype.scheduleOnce = function (callback, time) {\n\t var id = this._eventID++;\n\t var event = {\n\t 'time': this.toTicks(time),\n\t 'callback': callback,\n\t 'id': id\n\t };\n\t this._scheduledEvents[id.toString()] = {\n\t 'event': event,\n\t 'timeline': this._onceEvents\n\t };\n\t this._onceEvents.add(event);\n\t return id;\n\t };\n\t /**\n\t\t * Clear the passed in event id from the timeline\n\t\t * @param {Number} eventId The id of the event.\n\t\t * @returns {Tone.Transport} this\n\t\t */\n\t Tone.Transport.prototype.clear = function (eventId) {\n\t if (this._scheduledEvents.hasOwnProperty(eventId)) {\n\t var item = this._scheduledEvents[eventId.toString()];\n\t item.timeline.remove(item.event);\n\t delete this._scheduledEvents[eventId.toString()];\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Remove scheduled events from the timeline after\n\t\t * the given time. Repeated events will be removed\n\t\t * if their startTime is after the given time\n\t\t * @param {TransportTime} [after=0] Clear all events after\n\t\t * this time. \n\t\t * @returns {Tone.Transport} this\n\t\t */\n\t Tone.Transport.prototype.cancel = function (after) {\n\t after = this.defaultArg(after, 0);\n\t after = this.toTicks(after);\n\t this._timeline.cancel(after);\n\t this._onceEvents.cancel(after);\n\t this._repeatedEvents.cancel(after);\n\t return this;\n\t };\n\t ///////////////////////////////////////////////////////////////////////////////\n\t //\tSTART/STOP/PAUSE\n\t ///////////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * Bind start/stop/pause events from the clock and emit them.\n\t\t */\n\t Tone.Transport.prototype._bindClockEvents = function () {\n\t this._clock.on('start', function (time, offset) {\n\t offset = Tone.Time(this._clock.ticks, 'i').toSeconds();\n\t this.emit('start', time, offset);\n\t }.bind(this));\n\t this._clock.on('stop', function (time) {\n\t this.emit('stop', time);\n\t }.bind(this));\n\t this._clock.on('pause', function (time) {\n\t this.emit('pause', time);\n\t }.bind(this));\n\t };\n\t /**\n\t\t * Returns the playback state of the source, either \"started\", \"stopped\", or \"paused\"\n\t\t * @type {Tone.State}\n\t\t * @readOnly\n\t\t * @memberOf Tone.Transport#\n\t\t * @name state\n\t\t */\n\t Object.defineProperty(Tone.Transport.prototype, 'state', {\n\t get: function () {\n\t return this._clock.getStateAtTime(this.now());\n\t }\n\t });\n\t /**\n\t\t * Start the transport and all sources synced to the transport.\n\t\t * @param {Time} [time=now] The time when the transport should start.\n\t\t * @param {TransportTime=} offset The timeline offset to start the transport.\n\t\t * @returns {Tone.Transport} this\n\t\t * @example\n\t\t * //start the transport in one second starting at beginning of the 5th measure. \n\t\t * Tone.Transport.start(\"+1\", \"4:0:0\");\n\t\t */\n\t Tone.Transport.prototype.start = function (time, offset) {\n\t //start the clock\n\t if (!this.isUndef(offset)) {\n\t offset = this.toTicks(offset);\n\t }\n\t this._clock.start(time, offset);\n\t return this;\n\t };\n\t /**\n\t\t * Stop the transport and all sources synced to the transport.\n\t\t * @param {Time} [time=now] The time when the transport should stop. \n\t\t * @returns {Tone.Transport} this\n\t\t * @example\n\t\t * Tone.Transport.stop();\n\t\t */\n\t Tone.Transport.prototype.stop = function (time) {\n\t this._clock.stop(time);\n\t return this;\n\t };\n\t /**\n\t\t * Pause the transport and all sources synced to the transport.\n\t\t * @param {Time} [time=now]\n\t\t * @returns {Tone.Transport} this\n\t\t */\n\t Tone.Transport.prototype.pause = function (time) {\n\t this._clock.pause(time);\n\t return this;\n\t };\n\t ///////////////////////////////////////////////////////////////////////////////\n\t //\tSETTERS/GETTERS\n\t ///////////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * The time signature as just the numerator over 4. \n\t\t * For example 4/4 would be just 4 and 6/8 would be 3.\n\t\t * @memberOf Tone.Transport#\n\t\t * @type {Number|Array}\n\t\t * @name timeSignature\n\t\t * @example\n\t\t * //common time\n\t\t * Tone.Transport.timeSignature = 4;\n\t\t * // 7/8\n\t\t * Tone.Transport.timeSignature = [7, 8];\n\t\t * //this will be reduced to a single number\n\t\t * Tone.Transport.timeSignature; //returns 3.5\n\t\t */\n\t Object.defineProperty(Tone.Transport.prototype, 'timeSignature', {\n\t get: function () {\n\t return this._timeSignature;\n\t },\n\t set: function (timeSig) {\n\t if (this.isArray(timeSig)) {\n\t timeSig = timeSig[0] / timeSig[1] * 4;\n\t }\n\t this._timeSignature = timeSig;\n\t }\n\t });\n\t /**\n\t\t * When the Tone.Transport.loop = true, this is the starting position of the loop.\n\t\t * @memberOf Tone.Transport#\n\t\t * @type {TransportTime}\n\t\t * @name loopStart\n\t\t */\n\t Object.defineProperty(Tone.Transport.prototype, 'loopStart', {\n\t get: function () {\n\t return Tone.TransportTime(this._loopStart, 'i').toSeconds();\n\t },\n\t set: function (startPosition) {\n\t this._loopStart = this.toTicks(startPosition);\n\t }\n\t });\n\t /**\n\t\t * When the Tone.Transport.loop = true, this is the ending position of the loop.\n\t\t * @memberOf Tone.Transport#\n\t\t * @type {TransportTime}\n\t\t * @name loopEnd\n\t\t */\n\t Object.defineProperty(Tone.Transport.prototype, 'loopEnd', {\n\t get: function () {\n\t return Tone.TransportTime(this._loopEnd, 'i').toSeconds();\n\t },\n\t set: function (endPosition) {\n\t this._loopEnd = this.toTicks(endPosition);\n\t }\n\t });\n\t /**\n\t\t * Set the loop start and stop at the same time. \n\t\t * @param {TransportTime} startPosition \n\t\t * @param {TransportTime} endPosition \n\t\t * @returns {Tone.Transport} this\n\t\t * @example\n\t\t * //loop over the first measure\n\t\t * Tone.Transport.setLoopPoints(0, \"1m\");\n\t\t * Tone.Transport.loop = true;\n\t\t */\n\t Tone.Transport.prototype.setLoopPoints = function (startPosition, endPosition) {\n\t this.loopStart = startPosition;\n\t this.loopEnd = endPosition;\n\t return this;\n\t };\n\t /**\n\t\t * The swing value. Between 0-1 where 1 equal to \n\t\t * the note + half the subdivision.\n\t\t * @memberOf Tone.Transport#\n\t\t * @type {NormalRange}\n\t\t * @name swing\n\t\t */\n\t Object.defineProperty(Tone.Transport.prototype, 'swing', {\n\t get: function () {\n\t return this._swingAmount;\n\t },\n\t set: function (amount) {\n\t //scale the values to a normal range\n\t this._swingAmount = amount;\n\t }\n\t });\n\t /**\n\t\t * Set the subdivision which the swing will be applied to. \n\t\t * The default value is an 8th note. Value must be less \n\t\t * than a quarter note.\n\t\t * \n\t\t * @memberOf Tone.Transport#\n\t\t * @type {Time}\n\t\t * @name swingSubdivision\n\t\t */\n\t Object.defineProperty(Tone.Transport.prototype, 'swingSubdivision', {\n\t get: function () {\n\t return Tone.Time(this._swingTicks, 'i').toNotation();\n\t },\n\t set: function (subdivision) {\n\t this._swingTicks = this.toTicks(subdivision);\n\t }\n\t });\n\t /**\n\t\t * The Transport's position in Bars:Beats:Sixteenths.\n\t\t * Setting the value will jump to that position right away. \n\t\t * @memberOf Tone.Transport#\n\t\t * @type {BarsBeatsSixteenths}\n\t\t * @name position\n\t\t */\n\t Object.defineProperty(Tone.Transport.prototype, 'position', {\n\t get: function () {\n\t return Tone.TransportTime(this.ticks, 'i').toBarsBeatsSixteenths();\n\t },\n\t set: function (progress) {\n\t var ticks = this.toTicks(progress);\n\t this.ticks = ticks;\n\t }\n\t });\n\t /**\n\t\t * The Transport's position in seconds\n\t\t * Setting the value will jump to that position right away. \n\t\t * @memberOf Tone.Transport#\n\t\t * @type {Seconds}\n\t\t * @name seconds\n\t\t */\n\t Object.defineProperty(Tone.Transport.prototype, 'seconds', {\n\t get: function () {\n\t return Tone.TransportTime(this.ticks, 'i').toSeconds();\n\t },\n\t set: function (progress) {\n\t var ticks = this.toTicks(progress);\n\t this.ticks = ticks;\n\t }\n\t });\n\t /**\n\t\t * The Transport's loop position as a normalized value. Always\n\t\t * returns 0 if the transport if loop is not true. \n\t\t * @memberOf Tone.Transport#\n\t\t * @name progress\n\t\t * @type {NormalRange}\n\t\t */\n\t Object.defineProperty(Tone.Transport.prototype, 'progress', {\n\t get: function () {\n\t if (this.loop) {\n\t return (this.ticks - this._loopStart) / (this._loopEnd - this._loopStart);\n\t } else {\n\t return 0;\n\t }\n\t }\n\t });\n\t /**\n\t\t * The transports current tick position.\n\t\t * \n\t\t * @memberOf Tone.Transport#\n\t\t * @type {Ticks}\n\t\t * @name ticks\n\t\t */\n\t Object.defineProperty(Tone.Transport.prototype, 'ticks', {\n\t get: function () {\n\t return this._clock.ticks;\n\t },\n\t set: function (t) {\n\t if (this._clock.ticks !== t) {\n\t var now = this.now();\n\t //stop everything synced to the transport\n\t if (this.state === Tone.State.Started) {\n\t this.emit('stop', now);\n\t this._clock.ticks = t;\n\t //restart it with the new time\n\t this.emit('start', now, this.seconds);\n\t } else {\n\t this._clock.ticks = t;\n\t }\n\t }\n\t }\n\t });\n\t /**\n\t\t * Pulses Per Quarter note. This is the smallest resolution\n\t\t * the Transport timing supports. This should be set once\n\t\t * on initialization and not set again. Changing this value \n\t\t * after other objects have been created can cause problems. \n\t\t * \n\t\t * @memberOf Tone.Transport#\n\t\t * @type {Number}\n\t\t * @name PPQ\n\t\t */\n\t Object.defineProperty(Tone.Transport.prototype, 'PPQ', {\n\t get: function () {\n\t return this._ppq;\n\t },\n\t set: function (ppq) {\n\t var bpm = this.bpm.value;\n\t this._ppq = ppq;\n\t this.bpm.value = bpm;\n\t }\n\t });\n\t /**\n\t\t * The hint to the type of playback. Affects tradeoffs between audio \n\t\t * output latency and responsiveness. \n\t\t * \n\t\t * In addition to setting the value in seconds, the latencyHint also\n\t\t * accepts the strings \"interactive\" (prioritizes low latency), \n\t\t * \"playback\" (prioritizes sustained playback), \"balanced\" (balances\n\t\t * latency and performance), and \"fastest\" (lowest latency, might glitch more often). \n\t\t * @memberOf Tone.Transport#\n\t\t * @type {Seconds|String}\n\t\t * @name latencyHint\n\t\t */\n\t Object.defineProperty(Tone.Transport.prototype, 'latencyHint', {\n\t get: function () {\n\t return Tone.Clock.latencyHint;\n\t },\n\t set: function (hint) {\n\t Tone.Clock.latencyHint = hint;\n\t }\n\t });\n\t /**\n\t\t * Convert from BPM to frequency (factoring in PPQ)\n\t\t * @param {BPM} bpm The BPM value to convert to frequency\n\t\t * @return {Frequency} The BPM as a frequency with PPQ factored in.\n\t\t * @private\n\t\t */\n\t Tone.Transport.prototype._fromUnits = function (bpm) {\n\t return 1 / (60 / bpm / this.PPQ);\n\t };\n\t /**\n\t\t * Convert from frequency (with PPQ) into BPM\n\t\t * @param {Frequency} freq The clocks frequency to convert to BPM\n\t\t * @return {BPM} The frequency value as BPM.\n\t\t * @private\n\t\t */\n\t Tone.Transport.prototype._toUnits = function (freq) {\n\t return freq / this.PPQ * 60;\n\t };\n\t ///////////////////////////////////////////////////////////////////////////////\n\t //\tSYNCING\n\t ///////////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * Returns the time aligned to the next subdivision\n\t\t * of the Transport. If the Transport is not started,\n\t\t * it will return 0.\n\t\t * Note: this will not work precisely during tempo ramps.\n\t\t * @param {Time} subdivision The subdivision to quantize to\n\t\t * @return {Number} The context time of the next subdivision.\n\t\t * @example\n\t\t * Tone.Transport.start(); //the transport must be started\n\t\t * Tone.Transport.nextSubdivision(\"4n\");\n\t\t */\n\t Tone.Transport.prototype.nextSubdivision = function (subdivision) {\n\t subdivision = this.toSeconds(subdivision);\n\t //if the transport's not started, return 0\n\t var now;\n\t if (this.state === Tone.State.Started) {\n\t now = this._clock._nextTick;\n\t } else {\n\t return 0;\n\t }\n\t var transportPos = Tone.Time(this.ticks, 'i');\n\t var remainingTime = subdivision - transportPos % subdivision;\n\t if (remainingTime === 0) {\n\t remainingTime = subdivision;\n\t }\n\t return now + remainingTime;\n\t };\n\t /**\n\t\t * Attaches the signal to the tempo control signal so that \n\t\t * any changes in the tempo will change the signal in the same\n\t\t * ratio. \n\t\t * \n\t\t * @param {Tone.Signal} signal \n\t\t * @param {number=} ratio Optionally pass in the ratio between\n\t\t * the two signals. Otherwise it will be computed\n\t\t * based on their current values. \n\t\t * @returns {Tone.Transport} this\n\t\t */\n\t Tone.Transport.prototype.syncSignal = function (signal, ratio) {\n\t if (!ratio) {\n\t //get the sync ratio\n\t if (signal._param.value !== 0) {\n\t ratio = signal._param.value / this.bpm._param.value;\n\t } else {\n\t ratio = 0;\n\t }\n\t }\n\t var ratioSignal = new Tone.Gain(ratio);\n\t this.bpm.chain(ratioSignal, signal._param);\n\t this._syncedSignals.push({\n\t 'ratio': ratioSignal,\n\t 'signal': signal,\n\t 'initial': signal._param.value\n\t });\n\t signal._param.value = 0;\n\t return this;\n\t };\n\t /**\n\t\t * Unsyncs a previously synced signal from the transport's control. \n\t\t * See Tone.Transport.syncSignal.\n\t\t * @param {Tone.Signal} signal \n\t\t * @returns {Tone.Transport} this\n\t\t */\n\t Tone.Transport.prototype.unsyncSignal = function (signal) {\n\t for (var i = this._syncedSignals.length - 1; i >= 0; i--) {\n\t var syncedSignal = this._syncedSignals[i];\n\t if (syncedSignal.signal === signal) {\n\t syncedSignal.ratio.dispose();\n\t syncedSignal.signal._param.value = syncedSignal.initial;\n\t this._syncedSignals.splice(i, 1);\n\t }\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Clean up. \n\t\t * @returns {Tone.Transport} this\n\t\t * @private\n\t\t */\n\t Tone.Transport.prototype.dispose = function () {\n\t Tone.Emitter.prototype.dispose.call(this);\n\t this._clock.dispose();\n\t this._clock = null;\n\t this._writable('bpm');\n\t this.bpm = null;\n\t this._timeline.dispose();\n\t this._timeline = null;\n\t this._onceEvents.dispose();\n\t this._onceEvents = null;\n\t this._repeatedEvents.dispose();\n\t this._repeatedEvents = null;\n\t return this;\n\t };\n\t ///////////////////////////////////////////////////////////////////////////////\n\t //\tINITIALIZATION\n\t ///////////////////////////////////////////////////////////////////////////////\n\t var TransportConstructor = Tone.Transport;\n\t Tone.Transport = new TransportConstructor();\n\t Tone.Context.on('init', function (context) {\n\t if (context.Transport instanceof TransportConstructor) {\n\t Tone.Transport = context.Transport;\n\t } else {\n\t Tone.Transport = new TransportConstructor();\n\t //store the Transport on the context so it can be retrieved later\n\t context.Transport = Tone.Transport;\n\t }\n\t });\n\t return Tone.Transport;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Volume is a simple volume node, useful for creating a volume fader. \n\t\t *\n\t\t * @extends {Tone}\n\t\t * @constructor\n\t\t * @param {Decibels} [volume=0] the initial volume\n\t\t * @example\n\t\t * var vol = new Tone.Volume(-12);\n\t\t * instrument.chain(vol, Tone.Master);\n\t\t */\n\t Tone.Volume = function () {\n\t var options = this.optionsObject(arguments, ['volume'], Tone.Volume.defaults);\n\t /**\n\t\t\t * the output node\n\t\t\t * @type {GainNode}\n\t\t\t * @private\n\t\t\t */\n\t this.output = this.input = new Tone.Gain(options.volume, Tone.Type.Decibels);\n\t /**\n\t\t\t * The unmuted volume\n\t\t\t * @type {Decibels}\n\t\t\t * @private\n\t\t\t */\n\t this._unmutedVolume = options.volume;\n\t /**\n\t\t\t * The volume control in decibels. \n\t\t\t * @type {Decibels}\n\t\t\t * @signal\n\t\t\t */\n\t this.volume = this.output.gain;\n\t this._readOnly('volume');\n\t //set the mute initially\n\t this.mute = options.mute;\n\t };\n\t Tone.extend(Tone.Volume);\n\t /**\n\t\t * Defaults\n\t\t * @type {Object}\n\t\t * @const\n\t\t * @static\n\t\t */\n\t Tone.Volume.defaults = {\n\t 'volume': 0,\n\t 'mute': false\n\t };\n\t /**\n\t\t * Mute the output. \n\t\t * @memberOf Tone.Volume#\n\t\t * @type {boolean}\n\t\t * @name mute\n\t\t * @example\n\t\t * //mute the output\n\t\t * volume.mute = true;\n\t\t */\n\t Object.defineProperty(Tone.Volume.prototype, 'mute', {\n\t get: function () {\n\t return this.volume.value === -Infinity;\n\t },\n\t set: function (mute) {\n\t if (!this.mute && mute) {\n\t this._unmutedVolume = this.volume.value;\n\t //maybe it should ramp here?\n\t this.volume.value = -Infinity;\n\t } else if (this.mute && !mute) {\n\t this.volume.value = this._unmutedVolume;\n\t }\n\t }\n\t });\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.Volume} this\n\t\t */\n\t Tone.Volume.prototype.dispose = function () {\n\t this.input.dispose();\n\t Tone.prototype.dispose.call(this);\n\t this._writable('volume');\n\t this.volume.dispose();\n\t this.volume = null;\n\t return this;\n\t };\n\t return Tone.Volume;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class A single master output which is connected to the\n\t\t * AudioDestinationNode (aka your speakers). \n\t\t * It provides useful conveniences such as the ability \n\t\t * to set the volume and mute the entire application. \n\t\t * It also gives you the ability to apply master effects to your application. \n\t\t * <br><br>\n\t\t * Like Tone.Transport, A single Tone.Master is created\n\t\t * on initialization and you do not need to explicitly construct one.\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone}\n\t\t * @singleton\n\t\t * @example\n\t\t * //the audio will go from the oscillator to the speakers\n\t\t * oscillator.connect(Tone.Master);\n\t\t * //a convenience for connecting to the master output is also provided:\n\t\t * oscillator.toMaster();\n\t\t * //the above two examples are equivalent.\n\t\t */\n\t Tone.Master = function () {\n\t this.createInsOuts(1, 1);\n\t /**\n\t\t\t * The private volume node\n\t\t\t * @type {Tone.Volume}\n\t\t\t * @private\n\t\t\t */\n\t this._volume = this.output = new Tone.Volume();\n\t /**\n\t\t\t * The volume of the master output.\n\t\t\t * @type {Decibels}\n\t\t\t * @signal\n\t\t\t */\n\t this.volume = this._volume.volume;\n\t this._readOnly('volume');\n\t //connections\n\t this.input.chain(this.output, this.context.destination);\n\t };\n\t Tone.extend(Tone.Master);\n\t /**\n\t\t * @type {Object}\n\t\t * @const\n\t\t */\n\t Tone.Master.defaults = {\n\t 'volume': 0,\n\t 'mute': false\n\t };\n\t /**\n\t\t * Mute the output. \n\t\t * @memberOf Tone.Master#\n\t\t * @type {boolean}\n\t\t * @name mute\n\t\t * @example\n\t\t * //mute the output\n\t\t * Tone.Master.mute = true;\n\t\t */\n\t Object.defineProperty(Tone.Master.prototype, 'mute', {\n\t get: function () {\n\t return this._volume.mute;\n\t },\n\t set: function (mute) {\n\t this._volume.mute = mute;\n\t }\n\t });\n\t /**\n\t\t * Add a master effects chain. NOTE: this will disconnect any nodes which were previously \n\t\t * chained in the master effects chain. \n\t\t * @param {AudioNode|Tone...} args All arguments will be connected in a row\n\t\t * and the Master will be routed through it.\n\t\t * @return {Tone.Master} this\n\t\t * @example\n\t\t * //some overall compression to keep the levels in check\n\t\t * var masterCompressor = new Tone.Compressor({\n\t\t * \t\"threshold\" : -6,\n\t\t * \t\"ratio\" : 3,\n\t\t * \t\"attack\" : 0.5,\n\t\t * \t\"release\" : 0.1\n\t\t * });\n\t\t * //give a little boost to the lows\n\t\t * var lowBump = new Tone.Filter(200, \"lowshelf\");\n\t\t * //route everything through the filter \n\t\t * //and compressor before going to the speakers\n\t\t * Tone.Master.chain(lowBump, masterCompressor);\n\t\t */\n\t Tone.Master.prototype.chain = function () {\n\t this.input.disconnect();\n\t this.input.chain.apply(this.input, arguments);\n\t arguments[arguments.length - 1].connect(this.output);\n\t };\n\t /**\n\t\t * Clean up\n\t\t * @return {Tone.Master} this\n\t\t */\n\t Tone.Master.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._writable('volume');\n\t this._volume.dispose();\n\t this._volume = null;\n\t this.volume = null;\n\t };\n\t ///////////////////////////////////////////////////////////////////////////\n\t //\tAUGMENT TONE's PROTOTYPE\n\t ///////////////////////////////////////////////////////////////////////////\n\t /**\n\t\t * Connect 'this' to the master output. Shorthand for this.connect(Tone.Master)\n\t\t * @returns {Tone} this\n\t\t * @example\n\t\t * //connect an oscillator to the master output\n\t\t * var osc = new Tone.Oscillator().toMaster();\n\t\t */\n\t Tone.prototype.toMaster = function () {\n\t this.connect(Tone.Master);\n\t return this;\n\t };\n\t /**\n\t\t * Also augment AudioNode's prototype to include toMaster\n\t\t * as a convenience\n\t\t * @returns {AudioNode} this\n\t\t */\n\t AudioNode.prototype.toMaster = function () {\n\t this.connect(Tone.Master);\n\t return this;\n\t };\n\t /**\n\t\t * initialize the module and listen for new audio contexts\n\t\t */\n\t var MasterConstructor = Tone.Master;\n\t Tone.Master = new MasterConstructor();\n\t Tone.Context.on('init', function (context) {\n\t // if it already exists, just restore it\n\t if (context.Master instanceof MasterConstructor) {\n\t Tone.Master = context.Master;\n\t } else {\n\t Tone.Master = new MasterConstructor();\n\t }\n\t context.Master = Tone.Master;\n\t });\n\t return Tone.Master;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Base class for sources. Sources have start/stop methods\n\t\t * and the ability to be synced to the \n\t\t * start/stop of Tone.Transport. \n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone}\n\t\t * @example\n\t\t * //Multiple state change events can be chained together,\n\t\t * //but must be set in the correct order and with ascending times\n\t\t * \n\t\t * // OK\n\t\t * state.start().stop(\"+0.2\");\n\t\t * // AND\n\t\t * state.start().stop(\"+0.2\").start(\"+0.4\").stop(\"+0.7\")\n\t\t *\n\t\t * // BAD\n\t\t * state.stop(\"+0.2\").start();\n\t\t * // OR\n\t\t * state.start(\"+0.3\").stop(\"+0.2\");\n\t\t * \n\t\t */\n\t Tone.Source = function (options) {\n\t // this.createInsOuts(0, 1);\n\t options = this.defaultArg(options, Tone.Source.defaults);\n\t /**\n\t\t\t * The output volume node\n\t\t\t * @type {Tone.Volume}\n\t\t\t * @private\n\t\t\t */\n\t this._volume = this.output = new Tone.Volume(options.volume);\n\t /**\n\t\t\t * The volume of the output in decibels.\n\t\t\t * @type {Decibels}\n\t\t\t * @signal\n\t\t\t * @example\n\t\t\t * source.volume.value = -6;\n\t\t\t */\n\t this.volume = this._volume.volume;\n\t this._readOnly('volume');\n\t /**\n\t\t\t * \tKeep track of the scheduled state.\n\t\t\t * @type {Tone.TimelineState}\n\t\t\t * @private\n\t\t\t */\n\t this._state = new Tone.TimelineState(Tone.State.Stopped);\n\t this._state.memory = 10;\n\t /**\n\t\t\t * The synced `start` callback function from the transport\n\t\t\t * @type {Function}\n\t\t\t * @private\n\t\t\t */\n\t this._synced = false;\n\t /**\n\t\t\t * Keep track of all of the scheduled event ids\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._scheduled = [];\n\t //make the output explicitly stereo\n\t this._volume.output.output.channelCount = 2;\n\t this._volume.output.output.channelCountMode = 'explicit';\n\t //mute initially\n\t this.mute = options.mute;\n\t };\n\t Tone.extend(Tone.Source);\n\t /**\n\t\t * The default parameters\n\t\t * @static\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.Source.defaults = {\n\t 'volume': 0,\n\t 'mute': false\n\t };\n\t /**\n\t\t * Returns the playback state of the source, either \"started\" or \"stopped\".\n\t\t * @type {Tone.State}\n\t\t * @readOnly\n\t\t * @memberOf Tone.Source#\n\t\t * @name state\n\t\t */\n\t Object.defineProperty(Tone.Source.prototype, 'state', {\n\t get: function () {\n\t if (this._synced) {\n\t if (Tone.Transport.state === Tone.State.Started) {\n\t return this._state.getValueAtTime(Tone.Transport.seconds);\n\t } else {\n\t return Tone.State.Stopped;\n\t }\n\t } else {\n\t return this._state.getValueAtTime(this.now());\n\t }\n\t }\n\t });\n\t /**\n\t\t * Mute the output. \n\t\t * @memberOf Tone.Source#\n\t\t * @type {boolean}\n\t\t * @name mute\n\t\t * @example\n\t\t * //mute the output\n\t\t * source.mute = true;\n\t\t */\n\t Object.defineProperty(Tone.Source.prototype, 'mute', {\n\t get: function () {\n\t return this._volume.mute;\n\t },\n\t set: function (mute) {\n\t this._volume.mute = mute;\n\t }\n\t });\n\t //overwrite these functions\n\t Tone.Source.prototype._start = Tone.noOp;\n\t Tone.Source.prototype._stop = Tone.noOp;\n\t /**\n\t\t * Start the source at the specified time. If no time is given, \n\t\t * start the source now.\n\t\t * @param {Time} [time=now] When the source should be started.\n\t\t * @returns {Tone.Source} this\n\t\t * @example\n\t\t * source.start(\"+0.5\"); //starts the source 0.5 seconds from now\n\t\t */\n\t Tone.Source.prototype.start = function (time, offset, duration) {\n\t if (this.isUndef(time) && this._synced) {\n\t time = Tone.Transport.seconds;\n\t } else {\n\t time = this.toSeconds(time);\n\t }\n\t //if it's started, stop it and restart it\n\t if (!this.retrigger && this._state.getValueAtTime(time) === Tone.State.Started) {\n\t this.stop(time);\n\t }\n\t this._state.setStateAtTime(Tone.State.Started, time);\n\t if (this._synced) {\n\t // add the offset time to the event\n\t var event = this._state.get(time);\n\t event.offset = this.defaultArg(offset, 0);\n\t event.duration = duration;\n\t var sched = Tone.Transport.schedule(function (t) {\n\t this._start(t, offset, duration);\n\t }.bind(this), time);\n\t this._scheduled.push(sched);\n\t } else {\n\t this._start.apply(this, arguments);\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Stop the source at the specified time. If no time is given, \n\t\t * stop the source now.\n\t\t * @param {Time} [time=now] When the source should be stopped. \n\t\t * @returns {Tone.Source} this\n\t\t * @example\n\t\t * source.stop(); // stops the source immediately\n\t\t */\n\t Tone.Source.prototype.stop = function (time) {\n\t if (this.isUndef(time) && this._synced) {\n\t time = Tone.Transport.seconds;\n\t } else {\n\t time = this.toSeconds(time);\n\t }\n\t this._state.cancel(time);\n\t this._state.setStateAtTime(Tone.State.Stopped, time);\n\t if (!this._synced) {\n\t this._stop.apply(this, arguments);\n\t } else {\n\t var sched = Tone.Transport.schedule(this._stop.bind(this), time);\n\t this._scheduled.push(sched);\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Sync the source to the Transport so that all subsequent\n\t\t * calls to `start` and `stop` are synced to the TransportTime\n\t\t * instead of the AudioContext time. \n\t\t *\n\t\t * @returns {Tone.Source} this\n\t\t * @example\n\t\t * //sync the source so that it plays between 0 and 0.3 on the Transport's timeline\n\t\t * source.sync().start(0).stop(0.3);\n\t\t * //start the transport.\n\t\t * Tone.Transport.start();\n\t\t *\n\t\t * @example\n\t\t * //start the transport with an offset and the sync'ed sources\n\t\t * //will start in the correct position\n\t\t * source.sync().start(0.1);\n\t\t * //the source will be invoked with an offset of 0.4\n\t\t * Tone.Transport.start(\"+0.5\", 0.5);\n\t\t */\n\t Tone.Source.prototype.sync = function () {\n\t this._synced = true;\n\t Tone.Transport.on('start loopStart', function (time, offset) {\n\t if (offset > 0) {\n\t // get the playback state at that time\n\t var stateEvent = this._state.get(offset);\n\t // listen for start events which may occur in the middle of the sync'ed time\n\t if (stateEvent && stateEvent.state === Tone.State.Started && stateEvent.time !== offset) {\n\t // get the offset\n\t var startOffset = offset - this.toSeconds(stateEvent.time);\n\t var duration;\n\t if (stateEvent.duration) {\n\t duration = this.toSeconds(stateEvent.duration) - startOffset;\n\t }\n\t this._start(time, this.toSeconds(stateEvent.offset) + startOffset, duration);\n\t }\n\t }\n\t }.bind(this));\n\t Tone.Transport.on('stop pause loopEnd', function (time) {\n\t if (this._state.getValueAtTime(Tone.Transport.seconds) === Tone.State.Started) {\n\t this._stop(time);\n\t }\n\t }.bind(this));\n\t return this;\n\t };\n\t /**\n\t\t * Unsync the source to the Transport. See Tone.Source.sync\n\t\t * @returns {Tone.Source} this\n\t\t */\n\t Tone.Source.prototype.unsync = function () {\n\t this._synced = false;\n\t Tone.Transport.off('start stop pause loopEnd loopStart');\n\t // clear all of the scheduled ids\n\t for (var i = 0; i < this._scheduled.length; i++) {\n\t var id = this._scheduled[i];\n\t Tone.Transport.clear(id);\n\t }\n\t this._scheduled = [];\n\t this._state.cancel(0);\n\t return this;\n\t };\n\t /**\n\t\t *\tClean up.\n\t\t * @return {Tone.Source} this\n\t\t */\n\t Tone.Source.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this.unsync();\n\t this._scheduled = null;\n\t this._writable('volume');\n\t this._volume.dispose();\n\t this._volume = null;\n\t this.volume = null;\n\t this._state.dispose();\n\t this._state = null;\n\t };\n\t return Tone.Source;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * OscillatorNode shim\n\t\t * @private\n\t\t */\n\t if (window.OscillatorNode && !OscillatorNode.prototype.start) {\n\t OscillatorNode.prototype.start = OscillatorNode.prototype.noteOn;\n\t OscillatorNode.prototype.stop = OscillatorNode.prototype.noteOff;\n\t if (!OscillatorNode.prototype.setPeriodicWave) {\n\t OscillatorNode.prototype.setPeriodicWave = OscillatorNode.prototype.setWaveTable;\n\t }\n\t if (!AudioContext.prototype.createPeriodicWave) {\n\t AudioContext.prototype.createPeriodicWave = AudioContext.prototype.createWaveTable;\n\t }\n\t }\n\t /**\n\t\t * @class Tone.Oscillator supports a number of features including\n\t\t * phase rotation, multiple oscillator types (see Tone.Oscillator.type), \n\t\t * and Transport syncing (see Tone.Oscillator.syncFrequency).\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.Source}\n\t\t * @param {Frequency} [frequency] Starting frequency\n\t\t * @param {string} [type] The oscillator type. Read more about type below.\n\t\t * @example\n\t\t * //make and start a 440hz sine tone\n\t\t * var osc = new Tone.Oscillator(440, \"sine\").toMaster().start();\n\t\t */\n\t Tone.Oscillator = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'frequency',\n\t 'type'\n\t ], Tone.Oscillator.defaults);\n\t Tone.Source.call(this, options);\n\t /**\n\t\t\t * the main oscillator\n\t\t\t * @type {OscillatorNode}\n\t\t\t * @private\n\t\t\t */\n\t this._oscillator = null;\n\t /**\n\t\t\t * The frequency control.\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.frequency = new Tone.Signal(options.frequency, Tone.Type.Frequency);\n\t /**\n\t\t\t * The detune control signal.\n\t\t\t * @type {Cents}\n\t\t\t * @signal\n\t\t\t */\n\t this.detune = new Tone.Signal(options.detune, Tone.Type.Cents);\n\t /**\n\t\t\t * the periodic wave\n\t\t\t * @type {PeriodicWave}\n\t\t\t * @private\n\t\t\t */\n\t this._wave = null;\n\t /**\n\t\t\t * The partials of the oscillator\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._partials = this.defaultArg(options.partials, [1]);\n\t /**\n\t\t\t * the phase of the oscillator\n\t\t\t * between 0 - 360\n\t\t\t * @type {number}\n\t\t\t * @private\n\t\t\t */\n\t this._phase = options.phase;\n\t /**\n\t\t\t * the type of the oscillator\n\t\t\t * @type {string}\n\t\t\t * @private\n\t\t\t */\n\t this._type = null;\n\t //setup\n\t this.type = options.type;\n\t this.phase = this._phase;\n\t this._readOnly([\n\t 'frequency',\n\t 'detune'\n\t ]);\n\t };\n\t Tone.extend(Tone.Oscillator, Tone.Source);\n\t /**\n\t\t * the default parameters\n\t\t * @type {Object}\n\t\t */\n\t Tone.Oscillator.defaults = {\n\t 'type': 'sine',\n\t 'frequency': 440,\n\t 'detune': 0,\n\t 'phase': 0,\n\t 'partials': []\n\t };\n\t /**\n\t\t * The Oscillator types\n\t\t * @enum {String}\n\t\t */\n\t Tone.Oscillator.Type = {\n\t Sine: 'sine',\n\t Triangle: 'triangle',\n\t Sawtooth: 'sawtooth',\n\t Square: 'square',\n\t Custom: 'custom'\n\t };\n\t /**\n\t\t * start the oscillator\n\t\t * @param {Time} [time=now] \n\t\t * @private\n\t\t */\n\t Tone.Oscillator.prototype._start = function (time) {\n\t //new oscillator with previous values\n\t this._oscillator = this.context.createOscillator();\n\t this._oscillator.setPeriodicWave(this._wave);\n\t //connect the control signal to the oscillator frequency & detune\n\t this._oscillator.connect(this.output);\n\t this.frequency.connect(this._oscillator.frequency);\n\t this.detune.connect(this._oscillator.detune);\n\t //start the oscillator\n\t this._oscillator.start(this.toSeconds(time));\n\t };\n\t /**\n\t\t * stop the oscillator\n\t\t * @private\n\t\t * @param {Time} [time=now] (optional) timing parameter\n\t\t * @returns {Tone.Oscillator} this\n\t\t */\n\t Tone.Oscillator.prototype._stop = function (time) {\n\t if (this._oscillator) {\n\t this._oscillator.stop(this.toSeconds(time));\n\t this._oscillator = null;\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Sync the signal to the Transport's bpm. Any changes to the transports bpm,\n\t\t * will also affect the oscillators frequency. \n\t\t * @returns {Tone.Oscillator} this\n\t\t * @example\n\t\t * Tone.Transport.bpm.value = 120;\n\t\t * osc.frequency.value = 440;\n\t\t * //the ration between the bpm and the frequency will be maintained\n\t\t * osc.syncFrequency();\n\t\t * Tone.Transport.bpm.value = 240; \n\t\t * // the frequency of the oscillator is doubled to 880\n\t\t */\n\t Tone.Oscillator.prototype.syncFrequency = function () {\n\t Tone.Transport.syncSignal(this.frequency);\n\t return this;\n\t };\n\t /**\n\t\t * Unsync the oscillator's frequency from the Transport. \n\t\t * See Tone.Oscillator.syncFrequency\n\t\t * @returns {Tone.Oscillator} this\n\t\t */\n\t Tone.Oscillator.prototype.unsyncFrequency = function () {\n\t Tone.Transport.unsyncSignal(this.frequency);\n\t return this;\n\t };\n\t /**\n\t\t * The type of the oscillator: either sine, square, triangle, or sawtooth. Also capable of\n\t\t * setting the first x number of partials of the oscillator. For example: \"sine4\" would\n\t\t * set be the first 4 partials of the sine wave and \"triangle8\" would set the first\n\t\t * 8 partials of the triangle wave.\n\t\t * <br><br> \n\t\t * Uses PeriodicWave internally even for native types so that it can set the phase. \n\t\t * PeriodicWave equations are from the \n\t\t * [Webkit Web Audio implementation](https://code.google.com/p/chromium/codesearch#chromium/src/third_party/WebKit/Source/modules/webaudio/PeriodicWave.cpp&sq=package:chromium).\n\t\t * \n\t\t * @memberOf Tone.Oscillator#\n\t\t * @type {string}\n\t\t * @name type\n\t\t * @example\n\t\t * //set it to a square wave\n\t\t * osc.type = \"square\";\n\t\t * @example\n\t\t * //set the first 6 partials of a sawtooth wave\n\t\t * osc.type = \"sawtooth6\";\n\t\t */\n\t Object.defineProperty(Tone.Oscillator.prototype, 'type', {\n\t get: function () {\n\t return this._type;\n\t },\n\t set: function (type) {\n\t var coefs = this._getRealImaginary(type, this._phase);\n\t var periodicWave = this.context.createPeriodicWave(coefs[0], coefs[1]);\n\t this._wave = periodicWave;\n\t if (this._oscillator !== null) {\n\t this._oscillator.setPeriodicWave(this._wave);\n\t }\n\t this._type = type;\n\t }\n\t });\n\t /**\n\t\t * Returns the real and imaginary components based \n\t\t * on the oscillator type.\n\t\t * @returns {Array} [real, imaginary]\n\t\t * @private\n\t\t */\n\t Tone.Oscillator.prototype._getRealImaginary = function (type, phase) {\n\t var fftSize = 4096;\n\t var periodicWaveSize = fftSize / 2;\n\t var real = new Float32Array(periodicWaveSize);\n\t var imag = new Float32Array(periodicWaveSize);\n\t var partialCount = 1;\n\t if (type === Tone.Oscillator.Type.Custom) {\n\t partialCount = this._partials.length + 1;\n\t periodicWaveSize = partialCount;\n\t } else {\n\t var partial = /^(sine|triangle|square|sawtooth)(\\d+)$/.exec(type);\n\t if (partial) {\n\t partialCount = parseInt(partial[2]) + 1;\n\t type = partial[1];\n\t partialCount = Math.max(partialCount, 2);\n\t periodicWaveSize = partialCount;\n\t }\n\t }\n\t for (var n = 1; n < periodicWaveSize; ++n) {\n\t var piFactor = 2 / (n * Math.PI);\n\t var b;\n\t switch (type) {\n\t case Tone.Oscillator.Type.Sine:\n\t b = n <= partialCount ? 1 : 0;\n\t break;\n\t case Tone.Oscillator.Type.Square:\n\t b = n & 1 ? 2 * piFactor : 0;\n\t break;\n\t case Tone.Oscillator.Type.Sawtooth:\n\t b = piFactor * (n & 1 ? 1 : -1);\n\t break;\n\t case Tone.Oscillator.Type.Triangle:\n\t if (n & 1) {\n\t b = 2 * (piFactor * piFactor) * (n - 1 >> 1 & 1 ? -1 : 1);\n\t } else {\n\t b = 0;\n\t }\n\t break;\n\t case Tone.Oscillator.Type.Custom:\n\t b = this._partials[n - 1];\n\t break;\n\t default:\n\t throw new TypeError('Tone.Oscillator: invalid type: ' + type);\n\t }\n\t if (b !== 0) {\n\t real[n] = -b * Math.sin(phase * n);\n\t imag[n] = b * Math.cos(phase * n);\n\t } else {\n\t real[n] = 0;\n\t imag[n] = 0;\n\t }\n\t }\n\t return [\n\t real,\n\t imag\n\t ];\n\t };\n\t /**\n\t\t * Compute the inverse FFT for a given phase.\t\n\t\t * @param {Float32Array} real\n\t\t * @param {Float32Array} imag \n\t\t * @param {NormalRange} phase \n\t\t * @return {AudioRange}\n\t\t * @private\n\t\t */\n\t Tone.Oscillator.prototype._inverseFFT = function (real, imag, phase) {\n\t var sum = 0;\n\t var len = real.length;\n\t for (var i = 0; i < len; i++) {\n\t sum += real[i] * Math.cos(i * phase) + imag[i] * Math.sin(i * phase);\n\t }\n\t return sum;\n\t };\n\t /**\n\t\t * Returns the initial value of the oscillator.\n\t\t * @return {AudioRange}\n\t\t * @private\n\t\t */\n\t Tone.Oscillator.prototype._getInitialValue = function () {\n\t var coefs = this._getRealImaginary(this._type, 0);\n\t var real = coefs[0];\n\t var imag = coefs[1];\n\t var maxValue = 0;\n\t var twoPi = Math.PI * 2;\n\t //check for peaks in 8 places\n\t for (var i = 0; i < 8; i++) {\n\t maxValue = Math.max(this._inverseFFT(real, imag, i / 8 * twoPi), maxValue);\n\t }\n\t return -this._inverseFFT(real, imag, this._phase) / maxValue;\n\t };\n\t /**\n\t\t * The partials of the waveform. A partial represents \n\t\t * the amplitude at a harmonic. The first harmonic is the \n\t\t * fundamental frequency, the second is the octave and so on\n\t\t * following the harmonic series. \n\t\t * Setting this value will automatically set the type to \"custom\". \n\t\t * The value is an empty array when the type is not \"custom\". \n\t\t * @memberOf Tone.Oscillator#\n\t\t * @type {Array}\n\t\t * @name partials\n\t\t * @example\n\t\t * osc.partials = [1, 0.2, 0.01];\n\t\t */\n\t Object.defineProperty(Tone.Oscillator.prototype, 'partials', {\n\t get: function () {\n\t if (this._type !== Tone.Oscillator.Type.Custom) {\n\t return [];\n\t } else {\n\t return this._partials;\n\t }\n\t },\n\t set: function (partials) {\n\t this._partials = partials;\n\t this.type = Tone.Oscillator.Type.Custom;\n\t }\n\t });\n\t /**\n\t\t * The phase of the oscillator in degrees. \n\t\t * @memberOf Tone.Oscillator#\n\t\t * @type {Degrees}\n\t\t * @name phase\n\t\t * @example\n\t\t * osc.phase = 180; //flips the phase of the oscillator\n\t\t */\n\t Object.defineProperty(Tone.Oscillator.prototype, 'phase', {\n\t get: function () {\n\t return this._phase * (180 / Math.PI);\n\t },\n\t set: function (phase) {\n\t this._phase = phase * Math.PI / 180;\n\t //reset the type\n\t this.type = this._type;\n\t }\n\t });\n\t /**\n\t\t * Dispose and disconnect.\n\t\t * @return {Tone.Oscillator} this\n\t\t */\n\t Tone.Oscillator.prototype.dispose = function () {\n\t Tone.Source.prototype.dispose.call(this);\n\t if (this._oscillator !== null) {\n\t this._oscillator.disconnect();\n\t this._oscillator = null;\n\t }\n\t this._wave = null;\n\t this._writable([\n\t 'frequency',\n\t 'detune'\n\t ]);\n\t this.frequency.dispose();\n\t this.frequency = null;\n\t this.detune.dispose();\n\t this.detune = null;\n\t this._partials = null;\n\t return this;\n\t };\n\t return Tone.Oscillator;\n\t});\n\tModule(function (Tone) {\n\t /**\n\t\t * @class Tone.Zero outputs 0's at audio-rate. The reason this has to be\n\t\t * it's own class is that many browsers optimize out Tone.Signal\n\t\t * with a value of 0 and will not process nodes further down the graph. \n\t\t * @extends {Tone}\n\t\t */\n\t Tone.Zero = function () {\n\t /**\n\t\t\t * The gain node\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this._gain = this.input = this.output = new Tone.Gain();\n\t this.context.getConstant(0).connect(this._gain);\n\t };\n\t Tone.extend(Tone.Zero);\n\t /**\n\t\t * clean up\n\t\t * @return {Tone.Zero} this\n\t\t */\n\t Tone.Zero.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._gain.dispose();\n\t this._gain = null;\n\t return this;\n\t };\n\t return Tone.Zero;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class LFO stands for low frequency oscillator. Tone.LFO produces an output signal \n\t\t * which can be attached to an AudioParam or Tone.Signal \n\t\t * in order to modulate that parameter with an oscillator. The LFO can \n\t\t * also be synced to the transport to start/stop and change when the tempo changes.\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.Oscillator}\n\t\t * @param {Frequency|Object} [frequency] The frequency of the oscillation. Typically, LFOs will be\n\t\t * in the frequency range of 0.1 to 10 hertz. \n\t\t * @param {number=} min The minimum output value of the LFO. \n\t\t * @param {number=} max The maximum value of the LFO. \n\t\t * @example\n\t\t * var lfo = new Tone.LFO(\"4n\", 400, 4000);\n\t\t * lfo.connect(filter.frequency);\n\t\t */\n\t Tone.LFO = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'frequency',\n\t 'min',\n\t 'max'\n\t ], Tone.LFO.defaults);\n\t /** \n\t\t\t * The oscillator. \n\t\t\t * @type {Tone.Oscillator}\n\t\t\t * @private\n\t\t\t */\n\t this._oscillator = new Tone.Oscillator({\n\t 'frequency': options.frequency,\n\t 'type': options.type\n\t });\n\t /**\n\t\t\t * the lfo's frequency\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.frequency = this._oscillator.frequency;\n\t /**\n\t\t\t * The amplitude of the LFO, which controls the output range between\n\t\t\t * the min and max output. For example if the min is -10 and the max \n\t\t\t * is 10, setting the amplitude to 0.5 would make the LFO modulate\n\t\t\t * between -5 and 5. \n\t\t\t * @type {Number}\n\t\t\t * @signal\n\t\t\t */\n\t this.amplitude = this._oscillator.volume;\n\t this.amplitude.units = Tone.Type.NormalRange;\n\t this.amplitude.value = options.amplitude;\n\t /**\n\t\t\t * The signal which is output when the LFO is stopped\n\t\t\t * @type {Tone.Signal}\n\t\t\t * @private\n\t\t\t */\n\t this._stoppedSignal = new Tone.Signal(0, Tone.Type.AudioRange);\n\t /**\n\t\t\t * Just outputs zeros.\n\t\t\t * @type {Tone.Zero}\n\t\t\t * @private\n\t\t\t */\n\t this._zeros = new Tone.Zero();\n\t /**\n\t\t\t * The value that the LFO outputs when it's stopped\n\t\t\t * @type {AudioRange}\n\t\t\t * @private\n\t\t\t */\n\t this._stoppedValue = 0;\n\t /**\n\t\t\t * @type {Tone.AudioToGain} \n\t\t\t * @private\n\t\t\t */\n\t this._a2g = new Tone.AudioToGain();\n\t /**\n\t\t\t * @type {Tone.Scale} \n\t\t\t * @private\n\t\t\t */\n\t this._scaler = this.output = new Tone.Scale(options.min, options.max);\n\t /**\n\t\t\t * the units of the LFO (used for converting)\n\t\t\t * @type {Tone.Type} \n\t\t\t * @private\n\t\t\t */\n\t this._units = Tone.Type.Default;\n\t this.units = options.units;\n\t //connect it up\n\t this._oscillator.chain(this._a2g, this._scaler);\n\t this._zeros.connect(this._a2g);\n\t this._stoppedSignal.connect(this._a2g);\n\t this._readOnly([\n\t 'amplitude',\n\t 'frequency'\n\t ]);\n\t this.phase = options.phase;\n\t };\n\t Tone.extend(Tone.LFO, Tone.Oscillator);\n\t /**\n\t\t * the default parameters\n\t\t *\n\t\t * @static\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.LFO.defaults = {\n\t 'type': 'sine',\n\t 'min': 0,\n\t 'max': 1,\n\t 'phase': 0,\n\t 'frequency': '4n',\n\t 'amplitude': 1,\n\t 'units': Tone.Type.Default\n\t };\n\t /**\n\t\t * Start the LFO. \n\t\t * @param {Time} [time=now] the time the LFO will start\n\t\t * @returns {Tone.LFO} this\n\t\t */\n\t Tone.LFO.prototype.start = function (time) {\n\t time = this.toSeconds(time);\n\t this._stoppedSignal.setValueAtTime(0, time);\n\t this._oscillator.start(time);\n\t return this;\n\t };\n\t /**\n\t\t * Stop the LFO. \n\t\t * @param {Time} [time=now] the time the LFO will stop\n\t\t * @returns {Tone.LFO} this\n\t\t */\n\t Tone.LFO.prototype.stop = function (time) {\n\t time = this.toSeconds(time);\n\t this._stoppedSignal.setValueAtTime(this._stoppedValue, time);\n\t this._oscillator.stop(time);\n\t return this;\n\t };\n\t /**\n\t\t * Sync the start/stop/pause to the transport \n\t\t * and the frequency to the bpm of the transport\n\t\t * @returns {Tone.LFO} this\n\t\t * @example\n\t\t * lfo.frequency.value = \"8n\";\n\t\t * lfo.sync().start(0)\n\t\t * //the rate of the LFO will always be an eighth note, \n\t\t * //even as the tempo changes\n\t\t */\n\t Tone.LFO.prototype.sync = function () {\n\t this._oscillator.sync();\n\t this._oscillator.syncFrequency();\n\t return this;\n\t };\n\t /**\n\t\t * unsync the LFO from transport control\n\t\t * @returns {Tone.LFO} this\n\t\t */\n\t Tone.LFO.prototype.unsync = function () {\n\t this._oscillator.unsync();\n\t this._oscillator.unsyncFrequency();\n\t return this;\n\t };\n\t /**\n\t\t * The miniumum output of the LFO.\n\t\t * @memberOf Tone.LFO#\n\t\t * @type {number}\n\t\t * @name min\n\t\t */\n\t Object.defineProperty(Tone.LFO.prototype, 'min', {\n\t get: function () {\n\t return this._toUnits(this._scaler.min);\n\t },\n\t set: function (min) {\n\t min = this._fromUnits(min);\n\t this._scaler.min = min;\n\t }\n\t });\n\t /**\n\t\t * The maximum output of the LFO.\n\t\t * @memberOf Tone.LFO#\n\t\t * @type {number}\n\t\t * @name max\n\t\t */\n\t Object.defineProperty(Tone.LFO.prototype, 'max', {\n\t get: function () {\n\t return this._toUnits(this._scaler.max);\n\t },\n\t set: function (max) {\n\t max = this._fromUnits(max);\n\t this._scaler.max = max;\n\t }\n\t });\n\t /**\n\t\t * The type of the oscillator: sine, square, sawtooth, triangle. \n\t\t * @memberOf Tone.LFO#\n\t\t * @type {string}\n\t\t * @name type\n\t\t */\n\t Object.defineProperty(Tone.LFO.prototype, 'type', {\n\t get: function () {\n\t return this._oscillator.type;\n\t },\n\t set: function (type) {\n\t this._oscillator.type = type;\n\t this._stoppedValue = this._oscillator._getInitialValue();\n\t this._stoppedSignal.value = this._stoppedValue;\n\t }\n\t });\n\t /**\n\t\t * The phase of the LFO.\n\t\t * @memberOf Tone.LFO#\n\t\t * @type {number}\n\t\t * @name phase\n\t\t */\n\t Object.defineProperty(Tone.LFO.prototype, 'phase', {\n\t get: function () {\n\t return this._oscillator.phase;\n\t },\n\t set: function (phase) {\n\t this._oscillator.phase = phase;\n\t this._stoppedValue = this._oscillator._getInitialValue();\n\t this._stoppedSignal.value = this._stoppedValue;\n\t }\n\t });\n\t /**\n\t\t * The output units of the LFO.\n\t\t * @memberOf Tone.LFO#\n\t\t * @type {Tone.Type}\n\t\t * @name units\n\t\t */\n\t Object.defineProperty(Tone.LFO.prototype, 'units', {\n\t get: function () {\n\t return this._units;\n\t },\n\t set: function (val) {\n\t var currentMin = this.min;\n\t var currentMax = this.max;\n\t //convert the min and the max\n\t this._units = val;\n\t this.min = currentMin;\n\t this.max = currentMax;\n\t }\n\t });\n\t /**\n\t\t * Mute the output. \n\t\t * @memberOf Tone.LFO#\n\t\t * @type {Boolean}\n\t\t * @name mute\n\t\t */\n\t Object.defineProperty(Tone.LFO.prototype, 'mute', {\n\t get: function () {\n\t return this._oscillator.mute;\n\t },\n\t set: function (mute) {\n\t this._oscillator.mute = mute;\n\t }\n\t });\n\t /**\n\t\t * Returns the playback state of the source, either \"started\" or \"stopped\".\n\t\t * @type {Tone.State}\n\t\t * @readOnly\n\t\t * @memberOf Tone.LFO#\n\t\t * @name state\n\t\t */\n\t Object.defineProperty(Tone.LFO.prototype, 'state', {\n\t get: function () {\n\t return this._oscillator.state;\n\t }\n\t });\n\t /**\n\t\t * Connect the output of the LFO to an AudioParam, AudioNode, or Tone Node. \n\t\t * Tone.LFO will automatically convert to the destination units of the \n\t\t * will get the units from the connected node.\n\t\t * @param {Tone | AudioParam | AudioNode} node \n\t\t * @param {number} [outputNum=0] optionally which output to connect from\n\t\t * @param {number} [inputNum=0] optionally which input to connect to\n\t\t * @returns {Tone.LFO} this\n\t\t * @private\n\t\t */\n\t Tone.LFO.prototype.connect = function (node) {\n\t if (node.constructor === Tone.Signal || node.constructor === Tone.Param || node.constructor === Tone.TimelineSignal) {\n\t this.convert = node.convert;\n\t this.units = node.units;\n\t }\n\t Tone.Signal.prototype.connect.apply(this, arguments);\n\t return this;\n\t };\n\t /**\n\t\t * private method borrowed from Param converts \n\t\t * units from their destination value\n\t\t * @function\n\t\t * @private\n\t\t */\n\t Tone.LFO.prototype._fromUnits = Tone.Param.prototype._fromUnits;\n\t /**\n\t\t * private method borrowed from Param converts \n\t\t * units to their destination value\n\t\t * @function\n\t\t * @private\n\t\t */\n\t Tone.LFO.prototype._toUnits = Tone.Param.prototype._toUnits;\n\t /**\n\t\t * disconnect and dispose\n\t\t * @returns {Tone.LFO} this\n\t\t */\n\t Tone.LFO.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._writable([\n\t 'amplitude',\n\t 'frequency'\n\t ]);\n\t this._oscillator.dispose();\n\t this._oscillator = null;\n\t this._stoppedSignal.dispose();\n\t this._stoppedSignal = null;\n\t this._zeros.dispose();\n\t this._zeros = null;\n\t this._scaler.dispose();\n\t this._scaler = null;\n\t this._a2g.dispose();\n\t this._a2g = null;\n\t this.frequency = null;\n\t this.amplitude = null;\n\t return this;\n\t };\n\t return Tone.LFO;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Limiter will limit the loudness of an incoming signal. \n\t\t * It is composed of a Tone.Compressor with a fast attack \n\t\t * and release. Limiters are commonly used to safeguard against \n\t\t * signal clipping. Unlike a compressor, limiters do not provide \n\t\t * smooth gain reduction and almost completely prevent \n\t\t * additional gain above the threshold.\n\t\t *\n\t\t * @extends {Tone}\n\t\t * @constructor\n\t\t * @param {number} threshold The theshold above which the limiting is applied. \n\t\t * @example\n\t\t * var limiter = new Tone.Limiter(-6);\n\t\t */\n\t Tone.Limiter = function () {\n\t var options = this.optionsObject(arguments, ['threshold'], Tone.Limiter.defaults);\n\t /**\n\t\t\t * the compressor\n\t\t\t * @private\n\t\t\t * @type {Tone.Compressor}\n\t\t\t */\n\t this._compressor = this.input = this.output = new Tone.Compressor({\n\t 'attack': 0.001,\n\t 'decay': 0.001,\n\t 'threshold': options.threshold\n\t });\n\t /**\n\t\t\t * The threshold of of the limiter\n\t\t\t * @type {Decibel}\n\t\t\t * @signal\n\t\t\t */\n\t this.threshold = this._compressor.threshold;\n\t this._readOnly('threshold');\n\t };\n\t Tone.extend(Tone.Limiter);\n\t /**\n\t\t * The default value\n\t\t * @type {Object}\n\t\t * @const\n\t\t * @static\n\t\t */\n\t Tone.Limiter.defaults = { 'threshold': -12 };\n\t /**\n\t\t * Clean up.\n\t\t * @returns {Tone.Limiter} this\n\t\t */\n\t Tone.Limiter.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._compressor.dispose();\n\t this._compressor = null;\n\t this._writable('threshold');\n\t this.threshold = null;\n\t return this;\n\t };\n\t return Tone.Limiter;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Lowpass is a lowpass feedback comb filter. It is similar to \n\t\t * Tone.FeedbackCombFilter, but includes a lowpass filter.\n\t\t *\n\t\t * @extends {Tone}\n\t\t * @constructor\n\t\t * @param {Time|Object} [delayTime] The delay time of the comb filter\n\t\t * @param {NormalRange=} resonance The resonance (feedback) of the comb filter\n\t\t * @param {Frequency=} dampening The cutoff of the lowpass filter dampens the\n\t\t * signal as it is fedback. \n\t\t */\n\t Tone.LowpassCombFilter = function () {\n\t this.createInsOuts(1, 1);\n\t var options = this.optionsObject(arguments, [\n\t 'delayTime',\n\t 'resonance',\n\t 'dampening'\n\t ], Tone.LowpassCombFilter.defaults);\n\t /**\n\t\t\t * the delay node\n\t\t\t * @type {DelayNode}\n\t\t\t * @private\n\t\t\t */\n\t this._delay = this.input = new Tone.Delay(options.delayTime);\n\t /**\n\t\t\t * The delayTime of the comb filter. \n\t\t\t * @type {Time}\n\t\t\t * @signal\n\t\t\t */\n\t this.delayTime = this._delay.delayTime;\n\t /**\n\t\t\t * the lowpass filter\n\t\t\t * @type {BiquadFilterNode}\n\t\t\t * @private\n\t\t\t */\n\t this._lowpass = this.output = this.context.createBiquadFilter();\n\t this._lowpass.Q.value = -3.0102999566398125;\n\t this._lowpass.type = 'lowpass';\n\t /**\n\t\t\t * The dampening control of the feedback\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.dampening = new Tone.Param({\n\t 'param': this._lowpass.frequency,\n\t 'units': Tone.Type.Frequency,\n\t 'value': options.dampening\n\t });\n\t /**\n\t\t\t * the feedback gain\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this._feedback = new Tone.Gain(options.resonance, Tone.Type.NormalRange);\n\t /**\n\t\t\t * The amount of feedback of the delayed signal. \n\t\t\t * @type {NormalRange}\n\t\t\t * @signal\n\t\t\t */\n\t this.resonance = this._feedback.gain;\n\t //connections\n\t this._delay.chain(this._lowpass, this._feedback, this._delay);\n\t this._readOnly([\n\t 'dampening',\n\t 'resonance',\n\t 'delayTime'\n\t ]);\n\t };\n\t Tone.extend(Tone.LowpassCombFilter);\n\t /**\n\t\t * the default parameters\n\t\t * @static\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.LowpassCombFilter.defaults = {\n\t 'delayTime': 0.1,\n\t 'resonance': 0.5,\n\t 'dampening': 3000\n\t };\n\t /**\n\t\t * Clean up. \n\t\t * @returns {Tone.LowpassCombFilter} this\n\t\t */\n\t Tone.LowpassCombFilter.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._writable([\n\t 'dampening',\n\t 'resonance',\n\t 'delayTime'\n\t ]);\n\t this.dampening.dispose();\n\t this.dampening = null;\n\t this.resonance.dispose();\n\t this.resonance = null;\n\t this._delay.dispose();\n\t this._delay = null;\n\t this.delayTime = null;\n\t this._lowpass.disconnect();\n\t this._lowpass = null;\n\t this._feedback.disconnect();\n\t this._feedback = null;\n\t return this;\n\t };\n\t return Tone.LowpassCombFilter;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Merge brings two signals into the left and right \n\t\t * channels of a single stereo channel.\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone}\n\t\t * @example\n\t\t * var merge = new Tone.Merge().toMaster();\n\t\t * //routing a sine tone in the left channel\n\t\t * //and noise in the right channel\n\t\t * var osc = new Tone.Oscillator().connect(merge.left);\n\t\t * var noise = new Tone.Noise().connect(merge.right);\n\t\t * //starting our oscillators\n\t\t * noise.start();\n\t\t * osc.start();\n\t\t */\n\t Tone.Merge = function () {\n\t this.createInsOuts(2, 0);\n\t /**\n\t\t\t * The left input channel.\n\t\t\t * Alias for <code>input[0]</code>\n\t\t\t * @type {GainNode}\n\t\t\t */\n\t this.left = this.input[0] = new Tone.Gain();\n\t /**\n\t\t\t * The right input channel.\n\t\t\t * Alias for <code>input[1]</code>.\n\t\t\t * @type {GainNode}\n\t\t\t */\n\t this.right = this.input[1] = new Tone.Gain();\n\t /**\n\t\t\t * the merger node for the two channels\n\t\t\t * @type {ChannelMergerNode}\n\t\t\t * @private\n\t\t\t */\n\t this._merger = this.output = this.context.createChannelMerger(2);\n\t //connections\n\t this.left.connect(this._merger, 0, 0);\n\t this.right.connect(this._merger, 0, 1);\n\t this.left.channelCount = 1;\n\t this.right.channelCount = 1;\n\t this.left.channelCountMode = 'explicit';\n\t this.right.channelCountMode = 'explicit';\n\t };\n\t Tone.extend(Tone.Merge);\n\t /**\n\t\t * Clean up.\n\t\t * @returns {Tone.Merge} this\n\t\t */\n\t Tone.Merge.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this.left.dispose();\n\t this.left = null;\n\t this.right.dispose();\n\t this.right = null;\n\t this._merger.disconnect();\n\t this._merger = null;\n\t return this;\n\t };\n\t return Tone.Merge;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Meter gets the [RMS](https://en.wikipedia.org/wiki/Root_mean_square)\n\t\t * of an input signal with some averaging applied. It can also get the raw \n\t\t * value of the input signal.\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone}\n\t\t * @param {String} type Either \"level\" or \"signal\". \n\t\t * @param {Number} smoothing The amount of smoothing applied between frames.\n\t\t * @example\n\t\t * var meter = new Tone.Meter();\n\t\t * var mic = new Tone.UserMedia().start();\n\t\t * //connect mic to the meter\n\t\t * mic.connect(meter);\n\t\t * //the current level of the mic input\n\t\t * var level = meter.value;\n\t\t */\n\t Tone.Meter = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'type',\n\t 'smoothing'\n\t ], Tone.Meter.defaults);\n\t /**\n\t\t\t * The type of the meter, either \"level\" or \"signal\". \n\t\t\t * A \"level\" meter will return the volume level (rms) of the \n\t\t\t * input signal and a \"signal\" meter will return\n\t\t\t * the signal value of the input. \n\t\t\t * @type {String}\n\t\t\t */\n\t this.type = options.type;\n\t /**\n\t\t\t * The analyser node which computes the levels.\n\t\t\t * @private\n\t\t\t * @type {Tone.Analyser}\n\t\t\t */\n\t this.input = this.output = this._analyser = new Tone.Analyser('waveform', 512);\n\t this._analyser.returnType = 'float';\n\t /**\n\t\t\t * The amount of carryover between the current and last frame. \n\t\t\t * Only applied meter for \"level\" type.\n\t\t\t * @type {Number}\n\t\t\t */\n\t this.smoothing = options.smoothing;\n\t /**\n\t\t\t * The last computed value\n\t\t\t * @type {Number}\n\t\t\t * @private\n\t\t\t */\n\t this._lastValue = 0;\n\t };\n\t Tone.extend(Tone.Meter);\n\t /**\n\t\t * @private\n\t\t * @enum {String}\n\t\t */\n\t Tone.Meter.Type = {\n\t Level: 'level',\n\t Signal: 'signal'\n\t };\n\t /**\n\t\t * The defaults\n\t\t * @type {Object}\n\t\t * @static\n\t\t * @const\n\t\t */\n\t Tone.Meter.defaults = {\n\t 'smoothing': 0.8,\n\t 'type': Tone.Meter.Type.Level\n\t };\n\t /**\n\t\t * The current value of the meter. A value of 1 is\n\t\t * \"unity\".\n\t\t * @memberOf Tone.Meter#\n\t\t * @type {Number}\n\t\t * @name value\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone.Meter.prototype, 'value', {\n\t get: function () {\n\t var signal = this._analyser.analyse();\n\t if (this.type === Tone.Meter.Type.Level) {\n\t //rms\n\t var sum = 0;\n\t for (var i = 0; i < signal.length; i++) {\n\t sum += Math.pow(signal[i], 2);\n\t }\n\t var rms = Math.sqrt(sum / signal.length);\n\t //smooth it\n\t rms = Math.max(rms, this._lastValue * this.smoothing);\n\t this._lastValue = rms;\n\t //scale it\n\t var unity = 0.35;\n\t var val = rms / unity;\n\t //scale the output curve\n\t return Math.sqrt(val);\n\t } else {\n\t return signal[0];\n\t }\n\t }\n\t });\n\t /**\n\t\t * Clean up.\n\t\t * @returns {Tone.Meter} this\n\t\t */\n\t Tone.Meter.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._analyser.dispose();\n\t this._analyser = null;\n\t return this;\n\t };\n\t return Tone.Meter;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t *\t@class Tone.Split splits an incoming signal into left and right channels.\n\t\t *\t\n\t\t * @constructor\n\t\t * @extends {Tone}\n\t\t * @example\n\t\t * var split = new Tone.Split();\n\t\t * stereoSignal.connect(split);\n\t\t */\n\t Tone.Split = function () {\n\t this.createInsOuts(0, 2);\n\t /** \n\t\t\t * @type {ChannelSplitterNode}\n\t\t\t * @private\n\t\t\t */\n\t this._splitter = this.input = this.context.createChannelSplitter(2);\n\t /** \n\t\t\t * Left channel output. \n\t\t\t * Alias for <code>output[0]</code>\n\t\t\t * @type {Tone.Gain}\n\t\t\t */\n\t this.left = this.output[0] = new Tone.Gain();\n\t /**\n\t\t\t * Right channel output.\n\t\t\t * Alias for <code>output[1]</code>\n\t\t\t * @type {Tone.Gain}\n\t\t\t */\n\t this.right = this.output[1] = new Tone.Gain();\n\t //connections\n\t this._splitter.connect(this.left, 0, 0);\n\t this._splitter.connect(this.right, 1, 0);\n\t };\n\t Tone.extend(Tone.Split);\n\t /**\n\t\t * Clean up. \n\t\t * @returns {Tone.Split} this\n\t\t */\n\t Tone.Split.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._splitter.disconnect();\n\t this.left.dispose();\n\t this.left = null;\n\t this.right.dispose();\n\t this.right = null;\n\t this._splitter = null;\n\t return this;\n\t };\n\t return Tone.Split;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Mid/Side processing separates the the 'mid' signal \n\t\t * (which comes out of both the left and the right channel) \n\t\t * and the 'side' (which only comes out of the the side channels). <br><br>\n\t\t * <code>\n\t\t * Mid = (Left+Right)/sqrt(2); // obtain mid-signal from left and right<br>\n\t\t * Side = (Left-Right)/sqrt(2); // obtain side-signal from left and righ<br>\n\t\t * </code>\n\t\t *\n\t\t * @extends {Tone}\n\t\t * @constructor\n\t\t */\n\t Tone.MidSideSplit = function () {\n\t this.createInsOuts(0, 2);\n\t /**\n\t\t\t * split the incoming signal into left and right channels\n\t\t\t * @type {Tone.Split}\n\t\t\t * @private\n\t\t\t */\n\t this._split = this.input = new Tone.Split();\n\t /**\n\t\t\t * The mid send. Connect to mid processing. Alias for\n\t\t\t * <code>output[0]</code>\n\t\t\t * @type {Tone.Expr}\n\t\t\t */\n\t this.mid = this.output[0] = new Tone.Expr('($0 + $1) * $2');\n\t /**\n\t\t\t * The side output. Connect to side processing. Alias for\n\t\t\t * <code>output[1]</code>\n\t\t\t * @type {Tone.Expr}\n\t\t\t */\n\t this.side = this.output[1] = new Tone.Expr('($0 - $1) * $2');\n\t this._split.connect(this.mid, 0, 0);\n\t this._split.connect(this.mid, 1, 1);\n\t this._split.connect(this.side, 0, 0);\n\t this._split.connect(this.side, 1, 1);\n\t this.context.getConstant(Math.SQRT1_2).connect(this.mid, 0, 2);\n\t this.context.getConstant(Math.SQRT1_2).connect(this.side, 0, 2);\n\t };\n\t Tone.extend(Tone.MidSideSplit);\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.MidSideSplit} this\n\t\t */\n\t Tone.MidSideSplit.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this.mid.dispose();\n\t this.mid = null;\n\t this.side.dispose();\n\t this.side = null;\n\t this._split.dispose();\n\t this._split = null;\n\t return this;\n\t };\n\t return Tone.MidSideSplit;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Mid/Side processing separates the the 'mid' signal \n\t\t * (which comes out of both the left and the right channel) \n\t\t * and the 'side' (which only comes out of the the side channels). \n\t\t * MidSideMerge merges the mid and side signal after they've been seperated\n\t\t * by Tone.MidSideSplit.<br><br>\n\t\t * <code>\n\t\t * Left = (Mid+Side)/sqrt(2); // obtain left signal from mid and side<br>\n\t\t * Right = (Mid-Side)/sqrt(2); // obtain right signal from mid and side<br>\n\t\t * </code>\n\t\t *\n\t\t * @extends {Tone.StereoEffect}\n\t\t * @constructor\n\t\t */\n\t Tone.MidSideMerge = function () {\n\t this.createInsOuts(2, 0);\n\t /**\n\t\t\t * The mid signal input. Alias for\n\t\t\t * <code>input[0]</code>\n\t\t\t * @type {Tone.Gain}\n\t\t\t */\n\t this.mid = this.input[0] = new Tone.Gain();\n\t /**\n\t\t\t * recombine the mid/side into Left\n\t\t\t * @type {Tone.Expr}\n\t\t\t * @private\n\t\t\t */\n\t this._left = new Tone.Expr('($0 + $1) * $2');\n\t /**\n\t\t\t * The side signal input. Alias for\n\t\t\t * <code>input[1]</code>\n\t\t\t * @type {Tone.Gain}\n\t\t\t */\n\t this.side = this.input[1] = new Tone.Gain();\n\t /**\n\t\t\t * recombine the mid/side into Right\n\t\t\t * @type {Tone.Expr}\n\t\t\t * @private\n\t\t\t */\n\t this._right = new Tone.Expr('($0 - $1) * $2');\n\t /**\n\t\t\t * Merge the left/right signal back into a stereo signal.\n\t\t\t * @type {Tone.Merge}\n\t\t\t * @private\n\t\t\t */\n\t this._merge = this.output = new Tone.Merge();\n\t this.mid.connect(this._left, 0, 0);\n\t this.side.connect(this._left, 0, 1);\n\t this.mid.connect(this._right, 0, 0);\n\t this.side.connect(this._right, 0, 1);\n\t this._left.connect(this._merge, 0, 0);\n\t this._right.connect(this._merge, 0, 1);\n\t this.context.getConstant(Math.SQRT1_2).connect(this._left, 0, 2);\n\t this.context.getConstant(Math.SQRT1_2).connect(this._right, 0, 2);\n\t };\n\t Tone.extend(Tone.MidSideMerge);\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.MidSideMerge} this\n\t\t */\n\t Tone.MidSideMerge.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this.mid.dispose();\n\t this.mid = null;\n\t this.side.dispose();\n\t this.side = null;\n\t this._left.dispose();\n\t this._left = null;\n\t this._right.dispose();\n\t this._right = null;\n\t this._merge.dispose();\n\t this._merge = null;\n\t return this;\n\t };\n\t return Tone.MidSideMerge;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.MidSideCompressor applies two different compressors to the mid\n\t\t * and side signal components. See Tone.MidSideSplit. \n\t\t *\n\t\t * @extends {Tone}\n\t\t * @param {Object} options The options that are passed to the mid and side\n\t\t * compressors. \n\t\t * @constructor\n\t\t */\n\t Tone.MidSideCompressor = function (options) {\n\t options = this.defaultArg(options, Tone.MidSideCompressor.defaults);\n\t /**\n\t\t\t * the mid/side split\n\t\t\t * @type {Tone.MidSideSplit}\n\t\t\t * @private\n\t\t\t */\n\t this._midSideSplit = this.input = new Tone.MidSideSplit();\n\t /**\n\t\t\t * the mid/side recombination\n\t\t\t * @type {Tone.MidSideMerge}\n\t\t\t * @private\n\t\t\t */\n\t this._midSideMerge = this.output = new Tone.MidSideMerge();\n\t /**\n\t\t\t * The compressor applied to the mid signal\n\t\t\t * @type {Tone.Compressor}\n\t\t\t */\n\t this.mid = new Tone.Compressor(options.mid);\n\t /**\n\t\t\t * The compressor applied to the side signal\n\t\t\t * @type {Tone.Compressor}\n\t\t\t */\n\t this.side = new Tone.Compressor(options.side);\n\t this._midSideSplit.mid.chain(this.mid, this._midSideMerge.mid);\n\t this._midSideSplit.side.chain(this.side, this._midSideMerge.side);\n\t this._readOnly([\n\t 'mid',\n\t 'side'\n\t ]);\n\t };\n\t Tone.extend(Tone.MidSideCompressor);\n\t /**\n\t\t * @const\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.MidSideCompressor.defaults = {\n\t 'mid': {\n\t 'ratio': 3,\n\t 'threshold': -24,\n\t 'release': 0.03,\n\t 'attack': 0.02,\n\t 'knee': 16\n\t },\n\t 'side': {\n\t 'ratio': 6,\n\t 'threshold': -30,\n\t 'release': 0.25,\n\t 'attack': 0.03,\n\t 'knee': 10\n\t }\n\t };\n\t /**\n\t\t * Clean up.\n\t\t * @returns {Tone.MidSideCompressor} this\n\t\t */\n\t Tone.MidSideCompressor.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._writable([\n\t 'mid',\n\t 'side'\n\t ]);\n\t this.mid.dispose();\n\t this.mid = null;\n\t this.side.dispose();\n\t this.side = null;\n\t this._midSideSplit.dispose();\n\t this._midSideSplit = null;\n\t this._midSideMerge.dispose();\n\t this._midSideMerge = null;\n\t return this;\n\t };\n\t return Tone.MidSideCompressor;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Mono coerces the incoming mono or stereo signal into a mono signal\n\t\t * where both left and right channels have the same value. This can be useful \n\t\t * for [stereo imaging](https://en.wikipedia.org/wiki/Stereo_imaging).\n\t\t *\n\t\t * @extends {Tone}\n\t\t * @constructor\n\t\t */\n\t Tone.Mono = function () {\n\t this.createInsOuts(1, 0);\n\t /**\n\t\t\t * merge the signal\n\t\t\t * @type {Tone.Merge}\n\t\t\t * @private\n\t\t\t */\n\t this._merge = this.output = new Tone.Merge();\n\t this.input.connect(this._merge, 0, 0);\n\t this.input.connect(this._merge, 0, 1);\n\t this.input.gain.value = this.dbToGain(-10);\n\t };\n\t Tone.extend(Tone.Mono);\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.Mono} this\n\t\t */\n\t Tone.Mono.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._merge.dispose();\n\t this._merge = null;\n\t return this;\n\t };\n\t return Tone.Mono;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class A compressor with seperate controls over low/mid/high dynamics\n\t\t *\n\t\t * @extends {Tone}\n\t\t * @constructor\n\t\t * @param {Object} options The low/mid/high compressor settings.\n\t\t * @example\n\t\t * var multiband = new Tone.MultibandCompressor({\n\t\t * \t\"lowFrequency\" : 200,\n\t\t * \t\"highFrequency\" : 1300\n\t\t * \t\"low\" : {\n\t\t * \t\t\"threshold\" : -12\n\t\t * \t}\n\t\t * })\n\t\t */\n\t Tone.MultibandCompressor = function (options) {\n\t options = this.defaultArg(arguments, Tone.MultibandCompressor.defaults);\n\t /**\n\t\t\t * split the incoming signal into high/mid/low\n\t\t\t * @type {Tone.MultibandSplit}\n\t\t\t * @private\n\t\t\t */\n\t this._splitter = this.input = new Tone.MultibandSplit({\n\t 'lowFrequency': options.lowFrequency,\n\t 'highFrequency': options.highFrequency\n\t });\n\t /**\n\t\t\t * low/mid crossover frequency.\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.lowFrequency = this._splitter.lowFrequency;\n\t /**\n\t\t\t * mid/high crossover frequency.\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.highFrequency = this._splitter.highFrequency;\n\t /**\n\t\t\t * the output\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this.output = new Tone.Gain();\n\t /**\n\t\t\t * The compressor applied to the low frequencies.\n\t\t\t * @type {Tone.Compressor}\n\t\t\t */\n\t this.low = new Tone.Compressor(options.low);\n\t /**\n\t\t\t * The compressor applied to the mid frequencies.\n\t\t\t * @type {Tone.Compressor}\n\t\t\t */\n\t this.mid = new Tone.Compressor(options.mid);\n\t /**\n\t\t\t * The compressor applied to the high frequencies.\n\t\t\t * @type {Tone.Compressor}\n\t\t\t */\n\t this.high = new Tone.Compressor(options.high);\n\t //connect the compressor\n\t this._splitter.low.chain(this.low, this.output);\n\t this._splitter.mid.chain(this.mid, this.output);\n\t this._splitter.high.chain(this.high, this.output);\n\t this._readOnly([\n\t 'high',\n\t 'mid',\n\t 'low',\n\t 'highFrequency',\n\t 'lowFrequency'\n\t ]);\n\t };\n\t Tone.extend(Tone.MultibandCompressor);\n\t /**\n\t\t * @const\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.MultibandCompressor.defaults = {\n\t 'low': Tone.Compressor.defaults,\n\t 'mid': Tone.Compressor.defaults,\n\t 'high': Tone.Compressor.defaults,\n\t 'lowFrequency': 250,\n\t 'highFrequency': 2000\n\t };\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.MultibandCompressor} this\n\t\t */\n\t Tone.MultibandCompressor.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._splitter.dispose();\n\t this._writable([\n\t 'high',\n\t 'mid',\n\t 'low',\n\t 'highFrequency',\n\t 'lowFrequency'\n\t ]);\n\t this.low.dispose();\n\t this.mid.dispose();\n\t this.high.dispose();\n\t this._splitter = null;\n\t this.low = null;\n\t this.mid = null;\n\t this.high = null;\n\t this.lowFrequency = null;\n\t this.highFrequency = null;\n\t return this;\n\t };\n\t return Tone.MultibandCompressor;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Panner is an equal power Left/Right Panner and does not\n\t\t * support 3D. Panner uses the StereoPannerNode when available. \n\t\t * \n\t\t * @constructor\n\t\t * @extends {Tone}\n\t\t * @param {NormalRange} [initialPan=0] The initail panner value (defaults to 0 = center)\n\t\t * @example\n\t\t * //pan the input signal hard right. \n\t\t * var panner = new Tone.Panner(1);\n\t\t */\n\t Tone.Panner = function (initialPan) {\n\t if (this._hasStereoPanner) {\n\t /**\n\t\t\t\t * the panner node\n\t\t\t\t * @type {StereoPannerNode}\n\t\t\t\t * @private\n\t\t\t\t */\n\t this._panner = this.input = this.output = this.context.createStereoPanner();\n\t /**\n\t\t\t\t * The pan control. -1 = hard left, 1 = hard right. \n\t\t\t\t * @type {NormalRange}\n\t\t\t\t * @signal\n\t\t\t\t */\n\t this.pan = this._panner.pan;\n\t } else {\n\t /**\n\t\t\t\t * the dry/wet knob\n\t\t\t\t * @type {Tone.CrossFade}\n\t\t\t\t * @private\n\t\t\t\t */\n\t this._crossFade = new Tone.CrossFade();\n\t /**\n\t\t\t\t * @type {Tone.Merge}\n\t\t\t\t * @private\n\t\t\t\t */\n\t this._merger = this.output = new Tone.Merge();\n\t /**\n\t\t\t\t * @type {Tone.Split}\n\t\t\t\t * @private\n\t\t\t\t */\n\t this._splitter = this.input = new Tone.Split();\n\t /**\n\t\t\t\t * The pan control. -1 = hard left, 1 = hard right. \n\t\t\t\t * @type {AudioRange}\n\t\t\t\t * @signal\n\t\t\t\t */\n\t this.pan = new Tone.Signal(0, Tone.Type.AudioRange);\n\t /**\n\t\t\t\t * always sends 0\n\t\t\t\t * @type {Tone.Zero}\n\t\t\t\t * @private\n\t\t\t\t */\n\t this._zero = new Tone.Zero();\n\t /**\n\t\t\t\t * The analog to gain conversion\n\t\t\t\t * @type {Tone.AudioToGain}\n\t\t\t\t * @private\n\t\t\t\t */\n\t this._a2g = new Tone.AudioToGain();\n\t //CONNECTIONS:\n\t this._zero.connect(this._a2g);\n\t this.pan.chain(this._a2g, this._crossFade.fade);\n\t //left channel is a, right channel is b\n\t this._splitter.connect(this._crossFade, 0, 0);\n\t this._splitter.connect(this._crossFade, 1, 1);\n\t //merge it back together\n\t this._crossFade.a.connect(this._merger, 0, 0);\n\t this._crossFade.b.connect(this._merger, 0, 1);\n\t }\n\t //initial value\n\t this.pan.value = this.defaultArg(initialPan, 0);\n\t this._readOnly('pan');\n\t };\n\t Tone.extend(Tone.Panner);\n\t /**\n\t\t * indicates if the panner is using the new StereoPannerNode internally\n\t\t * @type {boolean}\n\t\t * @private\n\t\t */\n\t Tone.Panner.prototype._hasStereoPanner = Tone.prototype.isFunction(Tone.context.createStereoPanner);\n\t /**\n\t\t * Clean up.\n\t\t * @returns {Tone.Panner} this\n\t\t */\n\t Tone.Panner.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._writable('pan');\n\t if (this._hasStereoPanner) {\n\t this._panner.disconnect();\n\t this._panner = null;\n\t this.pan = null;\n\t } else {\n\t this._zero.dispose();\n\t this._zero = null;\n\t this._crossFade.dispose();\n\t this._crossFade = null;\n\t this._splitter.dispose();\n\t this._splitter = null;\n\t this._merger.dispose();\n\t this._merger = null;\n\t this.pan.dispose();\n\t this.pan = null;\n\t this._a2g.dispose();\n\t this._a2g = null;\n\t }\n\t return this;\n\t };\n\t return Tone.Panner;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class A spatialized panner node which supports equalpower or HRTF panning.\n\t\t * Tries to normalize the API across various browsers. See Tone.Listener\n\t\t * \n\t\t * @constructor\n\t\t * @extends {Tone}\n\t\t * @param {Number} positionX The initial x position.\n\t\t * @param {Number} positionY The initial y position.\n\t\t * @param {Number} positionZ The initial z position.\n\t\t */\n\t Tone.Panner3D = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'positionX',\n\t 'positionY',\n\t 'positionZ'\n\t ], Tone.Panner3D.defaults);\n\t /**\n\t\t\t * The panner node\n\t\t\t * @type {PannerNode}\n\t\t\t * @private\n\t\t\t */\n\t this._panner = this.input = this.output = this.context.createPanner();\n\t //set some values\n\t this._panner.panningModel = options.panningModel;\n\t this._panner.maxDistance = options.maxDistance;\n\t this._panner.distanceModel = options.distanceModel;\n\t this._panner.coneOuterGain = options.coneOuterGain;\n\t this._panner.coneOuterAngle = options.coneOuterAngle;\n\t this._panner.coneInnerAngle = options.coneInnerAngle;\n\t this._panner.refDistance = options.refDistance;\n\t this._panner.rolloffFactor = options.rolloffFactor;\n\t /**\n\t\t\t * Holds the current orientation\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._orientation = [\n\t options.orientationX,\n\t options.orientationY,\n\t options.orientationZ\n\t ];\n\t /**\n\t\t\t * Holds the current position\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._position = [\n\t options.positionX,\n\t options.positionY,\n\t options.positionZ\n\t ];\n\t // set the default position/orientation\n\t this.orientationX = options.orientationX;\n\t this.orientationY = options.orientationY;\n\t this.orientationZ = options.orientationZ;\n\t this.positionX = options.positionX;\n\t this.positionY = options.positionY;\n\t this.positionZ = options.positionZ;\n\t };\n\t Tone.extend(Tone.Panner3D);\n\t /**\n\t\t * the default parameters\n\t\t * @static\n\t\t * @const\n\t\t * @type {Object}\n\t\t * Defaults according to the specification\n\t\t */\n\t Tone.Panner3D.defaults = {\n\t 'positionX': 0,\n\t 'positionY': 0,\n\t 'positionZ': 0,\n\t 'orientationX': 0,\n\t 'orientationY': 0,\n\t 'orientationZ': 0,\n\t 'panningModel': 'equalpower',\n\t 'maxDistance': 10000,\n\t 'distanceModel': 'inverse',\n\t 'coneOuterGain': 0,\n\t 'coneOuterAngle': 360,\n\t 'coneInnerAngle': 360,\n\t 'refDistance': 1,\n\t 'rolloffFactor': 1\n\t };\n\t /**\n\t\t * The ramp time which is applied to the setTargetAtTime\n\t\t * @type {Number}\n\t\t * @private\n\t\t */\n\t Tone.Panner3D.prototype._rampTimeConstant = 0.01;\n\t /**\n\t\t * Sets the position of the source in 3d space.\t\n\t\t * @param {Number} x\n\t\t * @param {Number} y\n\t\t * @param {Number} z\n\t\t * @return {Tone.Panner3D} this\n\t\t */\n\t Tone.Panner3D.prototype.setPosition = function (x, y, z) {\n\t if (this._panner.positionX) {\n\t var now = this.now();\n\t this._panner.positionX.setTargetAtTime(x, now, this._rampTimeConstant);\n\t this._panner.positionY.setTargetAtTime(y, now, this._rampTimeConstant);\n\t this._panner.positionZ.setTargetAtTime(z, now, this._rampTimeConstant);\n\t } else {\n\t this._panner.setPosition(x, y, z);\n\t }\n\t this._position = Array.prototype.slice.call(arguments);\n\t return this;\n\t };\n\t /**\n\t\t * Sets the orientation of the source in 3d space.\t\n\t\t * @param {Number} x\n\t\t * @param {Number} y\n\t\t * @param {Number} z\n\t\t * @return {Tone.Panner3D} this\n\t\t */\n\t Tone.Panner3D.prototype.setOrientation = function (x, y, z) {\n\t if (this._panner.orientationX) {\n\t var now = this.now();\n\t this._panner.orientationX.setTargetAtTime(x, now, this._rampTimeConstant);\n\t this._panner.orientationY.setTargetAtTime(y, now, this._rampTimeConstant);\n\t this._panner.orientationZ.setTargetAtTime(z, now, this._rampTimeConstant);\n\t } else {\n\t this._panner.setOrientation(x, y, z);\n\t }\n\t this._orientation = Array.prototype.slice.call(arguments);\n\t return this;\n\t };\n\t /**\n\t\t * The x position of the panner object.\n\t\t * @type {Number}\n\t\t * @memberOf Tone.Panner3D#\n\t\t * @name positionX\n\t\t */\n\t Object.defineProperty(Tone.Panner3D.prototype, 'positionX', {\n\t set: function (pos) {\n\t this._position[0] = pos;\n\t this.setPosition.apply(this, this._position);\n\t },\n\t get: function () {\n\t return this._position[0];\n\t }\n\t });\n\t /**\n\t\t * The y position of the panner object.\n\t\t * @type {Number}\n\t\t * @memberOf Tone.Panner3D#\n\t\t * @name positionY\n\t\t */\n\t Object.defineProperty(Tone.Panner3D.prototype, 'positionY', {\n\t set: function (pos) {\n\t this._position[1] = pos;\n\t this.setPosition.apply(this, this._position);\n\t },\n\t get: function () {\n\t return this._position[1];\n\t }\n\t });\n\t /**\n\t\t * The z position of the panner object.\n\t\t * @type {Number}\n\t\t * @memberOf Tone.Panner3D#\n\t\t * @name positionZ\n\t\t */\n\t Object.defineProperty(Tone.Panner3D.prototype, 'positionZ', {\n\t set: function (pos) {\n\t this._position[2] = pos;\n\t this.setPosition.apply(this, this._position);\n\t },\n\t get: function () {\n\t return this._position[2];\n\t }\n\t });\n\t /**\n\t\t * The x orientation of the panner object.\n\t\t * @type {Number}\n\t\t * @memberOf Tone.Panner3D#\n\t\t * @name orientationX\n\t\t */\n\t Object.defineProperty(Tone.Panner3D.prototype, 'orientationX', {\n\t set: function (pos) {\n\t this._orientation[0] = pos;\n\t this.setOrientation.apply(this, this._orientation);\n\t },\n\t get: function () {\n\t return this._orientation[0];\n\t }\n\t });\n\t /**\n\t\t * The y orientation of the panner object.\n\t\t * @type {Number}\n\t\t * @memberOf Tone.Panner3D#\n\t\t * @name orientationY\n\t\t */\n\t Object.defineProperty(Tone.Panner3D.prototype, 'orientationY', {\n\t set: function (pos) {\n\t this._orientation[1] = pos;\n\t this.setOrientation.apply(this, this._orientation);\n\t },\n\t get: function () {\n\t return this._orientation[1];\n\t }\n\t });\n\t /**\n\t\t * The z orientation of the panner object.\n\t\t * @type {Number}\n\t\t * @memberOf Tone.Panner3D#\n\t\t * @name orientationZ\n\t\t */\n\t Object.defineProperty(Tone.Panner3D.prototype, 'orientationZ', {\n\t set: function (pos) {\n\t this._orientation[2] = pos;\n\t this.setOrientation.apply(this, this._orientation);\n\t },\n\t get: function () {\n\t return this._orientation[2];\n\t }\n\t });\n\t /**\n\t\t * Proxy a property on the panner to an exposed public propery\n\t\t * @param {String} prop\n\t\t * @private\n\t\t */\n\t Tone.Panner3D._aliasProperty = function (prop) {\n\t Object.defineProperty(Tone.Panner3D.prototype, prop, {\n\t set: function (val) {\n\t this._panner[prop] = val;\n\t },\n\t get: function () {\n\t return this._panner[prop];\n\t }\n\t });\n\t };\n\t /**\n\t\t * The panning model. Either \"equalpower\" or \"HRTF\".\n\t\t * @type {String}\n\t\t * @memberOf Tone.Panner3D#\n\t\t * @name panningModel\n\t\t */\n\t Tone.Panner3D._aliasProperty('panningModel');\n\t /**\n\t\t * A reference distance for reducing volume as source move further from the listener\n\t\t * @type {Number}\n\t\t * @memberOf Tone.Panner3D#\n\t\t * @name refDistance\n\t\t */\n\t Tone.Panner3D._aliasProperty('refDistance');\n\t /**\n\t\t * Describes how quickly the volume is reduced as source moves away from listener.\n\t\t * @type {Number}\n\t\t * @memberOf Tone.Panner3D#\n\t\t * @name rolloffFactor\n\t\t */\n\t Tone.Panner3D._aliasProperty('rolloffFactor');\n\t /**\n\t\t * The distance model used by, \"linear\", \"inverse\", or \"exponential\".\n\t\t * @type {String}\n\t\t * @memberOf Tone.Panner3D#\n\t\t * @name distanceModel\n\t\t */\n\t Tone.Panner3D._aliasProperty('distanceModel');\n\t /**\n\t\t * The angle, in degrees, inside of which there will be no volume reduction\n\t\t * @type {Degrees}\n\t\t * @memberOf Tone.Panner3D#\n\t\t * @name coneInnerAngle\n\t\t */\n\t Tone.Panner3D._aliasProperty('coneInnerAngle');\n\t /**\n\t\t * The angle, in degrees, outside of which the volume will be reduced \n\t\t * to a constant value of coneOuterGain\n\t\t * @type {Degrees}\n\t\t * @memberOf Tone.Panner3D#\n\t\t * @name coneOuterAngle\n\t\t */\n\t Tone.Panner3D._aliasProperty('coneOuterAngle');\n\t /**\n\t\t * The gain outside of the coneOuterAngle\n\t\t * @type {Gain}\n\t\t * @memberOf Tone.Panner3D#\n\t\t * @name coneOuterGain\n\t\t */\n\t Tone.Panner3D._aliasProperty('coneOuterGain');\n\t /**\n\t\t * The maximum distance between source and listener, \n\t\t * after which the volume will not be reduced any further.\n\t\t * @type {Positive}\n\t\t * @memberOf Tone.Panner3D#\n\t\t * @name maxDistance\n\t\t */\n\t Tone.Panner3D._aliasProperty('maxDistance');\n\t /**\n\t\t * Clean up.\n\t\t * @returns {Tone.Panner3D} this\n\t\t */\n\t Tone.Panner3D.prototype.dispose = function () {\n\t this._panner.disconnect();\n\t this._panner = null;\n\t this._orientation = null;\n\t this._position = null;\n\t return this;\n\t };\n\t return Tone.Panner3D;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.PanVol is a Tone.Panner and Tone.Volume in one.\n\t\t *\n\t\t * @extends {Tone}\n\t\t * @constructor\n\t\t * @param {AudioRange} pan the initial pan\n\t\t * @param {number} volume The output volume. \n\t\t * @example\n\t\t * //pan the incoming signal left and drop the volume\n\t\t * var panVol = new Tone.PanVol(0.25, -12);\n\t\t */\n\t Tone.PanVol = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'pan',\n\t 'volume'\n\t ], Tone.PanVol.defaults);\n\t /**\n\t\t\t * The panning node\n\t\t\t * @type {Tone.Panner}\n\t\t\t * @private\n\t\t\t */\n\t this._panner = this.input = new Tone.Panner(options.pan);\n\t /**\n\t\t\t * The L/R panning control.\n\t\t\t * @type {AudioRange}\n\t\t\t * @signal\n\t\t\t */\n\t this.pan = this._panner.pan;\n\t /**\n\t\t\t * The volume node\n\t\t\t * @type {Tone.Volume}\n\t\t\t */\n\t this._volume = this.output = new Tone.Volume(options.volume);\n\t /**\n\t\t\t * The volume control in decibels. \n\t\t\t * @type {Decibels}\n\t\t\t * @signal\n\t\t\t */\n\t this.volume = this._volume.volume;\n\t //connections\n\t this._panner.connect(this._volume);\n\t this._readOnly([\n\t 'pan',\n\t 'volume'\n\t ]);\n\t };\n\t Tone.extend(Tone.PanVol);\n\t /**\n\t\t * The defaults\n\t\t * @type {Object}\n\t\t * @const\n\t\t * @static\n\t\t */\n\t Tone.PanVol.defaults = {\n\t 'pan': 0.5,\n\t 'volume': 0\n\t };\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.PanVol} this\n\t\t */\n\t Tone.PanVol.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._writable([\n\t 'pan',\n\t 'volume'\n\t ]);\n\t this._panner.dispose();\n\t this._panner = null;\n\t this.pan = null;\n\t this._volume.dispose();\n\t this._volume = null;\n\t this.volume = null;\n\t return this;\n\t };\n\t return Tone.PanVol;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.CtrlInterpolate will interpolate between given values based\n\t\t * on the \"index\" property. Passing in an array or object literal\n\t\t * will interpolate each of the parameters. Note (i.e. \"C3\")\n\t\t * and Time (i.e. \"4n + 2\") can be interpolated. All other values are\n\t\t * assumed to be numbers. \n\t\t * @example\n\t\t * var interp = new Tone.CtrlInterpolate([0, 2, 9, 4]);\n\t\t * interp.index = 0.75;\n\t\t * interp.value; //returns 1.5\n\t\t *\n\t\t * @example\n\t\t * var interp = new Tone.CtrlInterpolate([\n\t\t * \t[2, 4, 5],\n\t\t * \t[9, 3, 2],\n\t\t * ]);\n\t\t * @param {Array} values The array of values to interpolate over\n\t\t * @param {Positive} index The initial interpolation index.\n\t\t * @extends {Tone}\n\t\t */\n\t Tone.CtrlInterpolate = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'values',\n\t 'index'\n\t ], Tone.CtrlInterpolate.defaults);\n\t /**\n\t\t\t * The values to interpolate between\n\t\t\t * @type {Array}\n\t\t\t */\n\t this.values = options.values;\n\t /**\n\t\t\t * The interpolated index between values. For example: a value of 1.5\n\t\t\t * would interpolate equally between the value at index 1\n\t\t\t * and the value at index 2. \n\t\t\t * @example\n\t\t\t * interp.index = 0; \n\t\t\t * interp.value; //returns the value at 0\n\t\t\t * interp.index = 0.5;\n\t\t\t * interp.value; //returns the value between indices 0 and 1. \n\t\t\t * @type {Positive}\n\t\t\t */\n\t this.index = options.index;\n\t };\n\t Tone.extend(Tone.CtrlInterpolate);\n\t /**\n\t\t * The defaults\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.CtrlInterpolate.defaults = {\n\t 'index': 0,\n\t 'values': []\n\t };\n\t /**\n\t\t * The current interpolated value based on the index\n\t\t * @readOnly\n\t\t * @memberOf Tone.CtrlInterpolate#\n\t\t * @type {*}\n\t\t * @name value\n\t\t */\n\t Object.defineProperty(Tone.CtrlInterpolate.prototype, 'value', {\n\t get: function () {\n\t var index = this.index;\n\t index = Math.min(index, this.values.length - 1);\n\t var lowerPosition = Math.floor(index);\n\t var lower = this.values[lowerPosition];\n\t var upper = this.values[Math.ceil(index)];\n\t return this._interpolate(index - lowerPosition, lower, upper);\n\t }\n\t });\n\t /**\n\t\t * Internal interpolation routine\n\t\t * @param {NormalRange} index The index between the lower and upper\n\t\t * @param {*} lower \n\t\t * @param {*} upper \n\t\t * @return {*} The interpolated value\n\t\t * @private\n\t\t */\n\t Tone.CtrlInterpolate.prototype._interpolate = function (index, lower, upper) {\n\t if (this.isArray(lower)) {\n\t var retArray = [];\n\t for (var i = 0; i < lower.length; i++) {\n\t retArray[i] = this._interpolate(index, lower[i], upper[i]);\n\t }\n\t return retArray;\n\t } else if (this.isObject(lower)) {\n\t var retObj = {};\n\t for (var attr in lower) {\n\t retObj[attr] = this._interpolate(index, lower[attr], upper[attr]);\n\t }\n\t return retObj;\n\t } else {\n\t lower = this._toNumber(lower);\n\t upper = this._toNumber(upper);\n\t return (1 - index) * lower + index * upper;\n\t }\n\t };\n\t /**\n\t\t * Convert from the given type into a number\n\t\t * @param {Number|String} value\n\t\t * @return {Number}\n\t\t * @private\n\t\t */\n\t Tone.CtrlInterpolate.prototype._toNumber = function (val) {\n\t if (this.isNumber(val)) {\n\t return val;\n\t } else {\n\t //otherwise assume that it's Time...\n\t return this.toSeconds(val);\n\t }\n\t };\n\t /**\n\t\t * Clean up\n\t\t * @return {Tone.CtrlInterpolate} this\n\t\t */\n\t Tone.CtrlInterpolate.prototype.dispose = function () {\n\t this.values = null;\n\t };\n\t return Tone.CtrlInterpolate;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.CtrlMarkov represents a Markov Chain where each call\n\t\t * to Tone.CtrlMarkov.next will move to the next state. If the next\n\t\t * state choice is an array, the next state is chosen randomly with\n\t\t * even probability for all of the choices. For a weighted probability\n\t\t * of the next choices, pass in an object with \"state\" and \"probability\" attributes. \n\t\t * The probabilities will be normalized and then chosen. If no next options\n\t\t * are given for the current state, the state will stay there. \n\t\t * @extends {Tone}\n\t\t * @example\n\t\t * var chain = new Tone.CtrlMarkov({\n\t\t * \t\"beginning\" : [\"end\", \"middle\"],\n\t\t * \t\"middle\" : \"end\"\n\t\t * });\n\t\t * chain.value = \"beginning\";\n\t\t * chain.next(); //returns \"end\" or \"middle\" with 50% probability\n\t\t *\n\t\t * @example\n\t\t * var chain = new Tone.CtrlMarkov({\n\t\t * \t\"beginning\" : [{\"value\" : \"end\", \"probability\" : 0.8}, \n\t\t * \t\t\t\t\t{\"value\" : \"middle\", \"probability\" : 0.2}],\n\t\t * \t\"middle\" : \"end\"\n\t\t * });\n\t\t * chain.value = \"beginning\";\n\t\t * chain.next(); //returns \"end\" with 80% probability or \"middle\" with 20%.\n\t\t * @param {Object} values An object with the state names as the keys\n\t\t * and the next state(s) as the values. \n\t\t */\n\t Tone.CtrlMarkov = function (values, initial) {\n\t /**\n\t\t\t * The Markov values with states as the keys\n\t\t\t * and next state(s) as the values. \n\t\t\t * @type {Object}\n\t\t\t */\n\t this.values = this.defaultArg(values, {});\n\t /**\n\t\t\t * The current state of the Markov values. The next\n\t\t\t * state will be evaluated and returned when Tone.CtrlMarkov.next\n\t\t\t * is invoked.\n\t\t\t * @type {String}\n\t\t\t */\n\t this.value = this.defaultArg(initial, Object.keys(this.values)[0]);\n\t };\n\t Tone.extend(Tone.CtrlMarkov);\n\t /**\n\t\t * Returns the next state of the Markov values. \n\t\t * @return {String}\n\t\t */\n\t Tone.CtrlMarkov.prototype.next = function () {\n\t if (this.values.hasOwnProperty(this.value)) {\n\t var next = this.values[this.value];\n\t if (this.isArray(next)) {\n\t var distribution = this._getProbDistribution(next);\n\t var rand = Math.random();\n\t var total = 0;\n\t for (var i = 0; i < distribution.length; i++) {\n\t var dist = distribution[i];\n\t if (rand > total && rand < total + dist) {\n\t var chosen = next[i];\n\t if (this.isObject(chosen)) {\n\t this.value = chosen.value;\n\t } else {\n\t this.value = chosen;\n\t }\n\t }\n\t total += dist;\n\t }\n\t } else {\n\t this.value = next;\n\t }\n\t }\n\t return this.value;\n\t };\n\t /**\n\t\t * Choose randomly from an array weighted options in the form \n\t\t * {\"state\" : string, \"probability\" : number} or an array of values\n\t\t * @param {Array} options \n\t\t * @return {Array} The randomly selected choice\n\t\t * @private\n\t\t */\n\t Tone.CtrlMarkov.prototype._getProbDistribution = function (options) {\n\t var distribution = [];\n\t var total = 0;\n\t var needsNormalizing = false;\n\t for (var i = 0; i < options.length; i++) {\n\t var option = options[i];\n\t if (this.isObject(option)) {\n\t needsNormalizing = true;\n\t distribution[i] = option.probability;\n\t } else {\n\t distribution[i] = 1 / options.length;\n\t }\n\t total += distribution[i];\n\t }\n\t if (needsNormalizing) {\n\t //normalize the values\n\t for (var j = 0; j < distribution.length; j++) {\n\t distribution[j] = distribution[j] / total;\n\t }\n\t }\n\t return distribution;\n\t };\n\t /**\n\t\t * Clean up\n\t\t * @return {Tone.CtrlMarkov} this\n\t\t */\n\t Tone.CtrlMarkov.prototype.dispose = function () {\n\t this.values = null;\n\t };\n\t return Tone.CtrlMarkov;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Generate patterns from an array of values.\n\t\t * Has a number of arpeggiation and randomized\n\t\t * selection patterns. \n\t\t * <ul>\n\t\t * \t <li>\"up\" - cycles upward</li>\n\t\t * \t\t\t<li>\"down\" - cycles downward</li>\n\t\t * \t\t\t<li>\"upDown\" - up then and down</li>\n\t\t * \t\t\t<li>\"downUp\" - cycles down then and up</li>\n\t\t * \t\t\t<li>\"alternateUp\" - jump up two and down one</li>\n\t\t * \t\t\t<li>\"alternateDown\" - jump down two and up one</li>\n\t\t * \t\t\t<li>\"random\" - randomly select an index</li>\n\t\t * \t\t\t<li>\"randomWalk\" - randomly moves one index away from the current position</li>\n\t\t * \t\t\t<li>\"randomOnce\" - randomly select an index without repeating until all values have been chosen.</li>\n\t\t * \t\t</ul>\n\t\t * @param {Array} values An array of options to choose from.\n\t\t * @param {Tone.CtrlPattern.Type=} type The name of the pattern.\n\t\t * @extends {Tone}\n\t\t */\n\t Tone.CtrlPattern = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'values',\n\t 'type'\n\t ], Tone.CtrlPattern.defaults);\n\t /**\n\t\t\t * The array of values to arpeggiate over\n\t\t\t * @type {Array}\n\t\t\t */\n\t this.values = options.values;\n\t /**\n\t\t\t * The current position in the values array\n\t\t\t * @type {Number}\n\t\t\t */\n\t this.index = 0;\n\t /**\n\t\t\t * The type placeholder\n\t\t\t * @type {Tone.CtrlPattern.Type}\n\t\t\t * @private\n\t\t\t */\n\t this._type = null;\n\t /**\n\t\t\t * Shuffled values for the RandomOnce type\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._shuffled = null;\n\t /**\n\t\t\t * The direction of the movement\n\t\t\t * @type {String}\n\t\t\t * @private\n\t\t\t */\n\t this._direction = null;\n\t this.type = options.type;\n\t };\n\t Tone.extend(Tone.CtrlPattern);\n\t /**\n\t\t * The Control Patterns\n\t\t * @type {Object}\n\t\t * @static\n\t\t */\n\t Tone.CtrlPattern.Type = {\n\t Up: 'up',\n\t Down: 'down',\n\t UpDown: 'upDown',\n\t DownUp: 'downUp',\n\t AlternateUp: 'alternateUp',\n\t AlternateDown: 'alternateDown',\n\t Random: 'random',\n\t RandomWalk: 'randomWalk',\n\t RandomOnce: 'randomOnce'\n\t };\n\t /**\n\t\t * The default values. \n\t\t * @type {Object}\n\t\t */\n\t Tone.CtrlPattern.defaults = {\n\t 'type': Tone.CtrlPattern.Type.Up,\n\t 'values': []\n\t };\n\t /**\n\t\t * The value at the current index of the pattern.\n\t\t * @readOnly\n\t\t * @memberOf Tone.CtrlPattern#\n\t\t * @type {*}\n\t\t * @name value\n\t\t */\n\t Object.defineProperty(Tone.CtrlPattern.prototype, 'value', {\n\t get: function () {\n\t //some safeguards\n\t if (this.values.length === 0) {\n\t return;\n\t } else if (this.values.length === 1) {\n\t return this.values[0];\n\t }\n\t this.index = Math.min(this.index, this.values.length - 1);\n\t var val = this.values[this.index];\n\t if (this.type === Tone.CtrlPattern.Type.RandomOnce) {\n\t if (this.values.length !== this._shuffled.length) {\n\t this._shuffleValues();\n\t }\n\t val = this.values[this._shuffled[this.index]];\n\t }\n\t return val;\n\t }\n\t });\n\t /**\n\t\t * The pattern used to select the next\n\t\t * item from the values array\n\t\t * @memberOf Tone.CtrlPattern#\n\t\t * @type {Tone.CtrlPattern.Type}\n\t\t * @name type\n\t\t */\n\t Object.defineProperty(Tone.CtrlPattern.prototype, 'type', {\n\t get: function () {\n\t return this._type;\n\t },\n\t set: function (type) {\n\t this._type = type;\n\t this._shuffled = null;\n\t //the first index\n\t if (this._type === Tone.CtrlPattern.Type.Up || this._type === Tone.CtrlPattern.Type.UpDown || this._type === Tone.CtrlPattern.Type.RandomOnce || this._type === Tone.CtrlPattern.Type.AlternateUp) {\n\t this.index = 0;\n\t } else if (this._type === Tone.CtrlPattern.Type.Down || this._type === Tone.CtrlPattern.Type.DownUp || this._type === Tone.CtrlPattern.Type.AlternateDown) {\n\t this.index = this.values.length - 1;\n\t }\n\t //the direction\n\t if (this._type === Tone.CtrlPattern.Type.UpDown || this._type === Tone.CtrlPattern.Type.AlternateUp) {\n\t this._direction = Tone.CtrlPattern.Type.Up;\n\t } else if (this._type === Tone.CtrlPattern.Type.DownUp || this._type === Tone.CtrlPattern.Type.AlternateDown) {\n\t this._direction = Tone.CtrlPattern.Type.Down;\n\t }\n\t //randoms\n\t if (this._type === Tone.CtrlPattern.Type.RandomOnce) {\n\t this._shuffleValues();\n\t } else if (this._type === Tone.CtrlPattern.Random) {\n\t this.index = Math.floor(Math.random() * this.values.length);\n\t }\n\t }\n\t });\n\t /**\n\t\t * Return the next value given the current position\n\t\t * and pattern.\n\t\t * @return {*} The next value\n\t\t */\n\t Tone.CtrlPattern.prototype.next = function () {\n\t var type = this.type;\n\t //choose the next index\n\t if (type === Tone.CtrlPattern.Type.Up) {\n\t this.index++;\n\t if (this.index >= this.values.length) {\n\t this.index = 0;\n\t }\n\t } else if (type === Tone.CtrlPattern.Type.Down) {\n\t this.index--;\n\t if (this.index < 0) {\n\t this.index = this.values.length - 1;\n\t }\n\t } else if (type === Tone.CtrlPattern.Type.UpDown || type === Tone.CtrlPattern.Type.DownUp) {\n\t if (this._direction === Tone.CtrlPattern.Type.Up) {\n\t this.index++;\n\t } else {\n\t this.index--;\n\t }\n\t if (this.index < 0) {\n\t this.index = 1;\n\t this._direction = Tone.CtrlPattern.Type.Up;\n\t } else if (this.index >= this.values.length) {\n\t this.index = this.values.length - 2;\n\t this._direction = Tone.CtrlPattern.Type.Down;\n\t }\n\t } else if (type === Tone.CtrlPattern.Type.Random) {\n\t this.index = Math.floor(Math.random() * this.values.length);\n\t } else if (type === Tone.CtrlPattern.Type.RandomWalk) {\n\t if (Math.random() < 0.5) {\n\t this.index--;\n\t this.index = Math.max(this.index, 0);\n\t } else {\n\t this.index++;\n\t this.index = Math.min(this.index, this.values.length - 1);\n\t }\n\t } else if (type === Tone.CtrlPattern.Type.RandomOnce) {\n\t this.index++;\n\t if (this.index >= this.values.length) {\n\t this.index = 0;\n\t //reshuffle the values for next time\n\t this._shuffleValues();\n\t }\n\t } else if (type === Tone.CtrlPattern.Type.AlternateUp) {\n\t if (this._direction === Tone.CtrlPattern.Type.Up) {\n\t this.index += 2;\n\t this._direction = Tone.CtrlPattern.Type.Down;\n\t } else {\n\t this.index -= 1;\n\t this._direction = Tone.CtrlPattern.Type.Up;\n\t }\n\t if (this.index >= this.values.length) {\n\t this.index = 0;\n\t this._direction = Tone.CtrlPattern.Type.Up;\n\t }\n\t } else if (type === Tone.CtrlPattern.Type.AlternateDown) {\n\t if (this._direction === Tone.CtrlPattern.Type.Up) {\n\t this.index += 1;\n\t this._direction = Tone.CtrlPattern.Type.Down;\n\t } else {\n\t this.index -= 2;\n\t this._direction = Tone.CtrlPattern.Type.Up;\n\t }\n\t if (this.index < 0) {\n\t this.index = this.values.length - 1;\n\t this._direction = Tone.CtrlPattern.Type.Down;\n\t }\n\t }\n\t return this.value;\n\t };\n\t /**\n\t\t * Shuffles the values and places the results into the _shuffled\n\t\t * @private\n\t\t */\n\t Tone.CtrlPattern.prototype._shuffleValues = function () {\n\t var copy = [];\n\t this._shuffled = [];\n\t for (var i = 0; i < this.values.length; i++) {\n\t copy[i] = i;\n\t }\n\t while (copy.length > 0) {\n\t var randVal = copy.splice(Math.floor(copy.length * Math.random()), 1);\n\t this._shuffled.push(randVal[0]);\n\t }\n\t };\n\t /**\n\t\t * Clean up\n\t\t * @returns {Tone.CtrlPattern} this\n\t\t */\n\t Tone.CtrlPattern.prototype.dispose = function () {\n\t this._shuffled = null;\n\t this.values = null;\n\t };\n\t return Tone.CtrlPattern;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Choose a random value.\n\t\t * @extends {Tone}\n\t\t * @example\n\t\t * var randomWalk = new Tone.CtrlRandom({\n\t\t * \t\"min\" : 0,\n\t\t * \t\"max\" : 10,\n\t\t * \t\"integer\" : true\n\t\t * });\n\t\t * randomWalk.eval();\n\t\t *\n\t\t * @param {Number|Time=} min The minimum return value.\n\t\t * @param {Number|Time=} max The maximum return value.\n\t\t */\n\t Tone.CtrlRandom = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'min',\n\t 'max'\n\t ], Tone.CtrlRandom.defaults);\n\t /**\n\t\t\t * The minimum return value\n\t\t\t * @type {Number|Time}\n\t\t\t */\n\t this.min = options.min;\n\t /**\n\t\t\t * The maximum return value\n\t\t\t * @type {Number|Time}\n\t\t\t */\n\t this.max = options.max;\n\t /**\n\t\t\t * If the return value should be an integer\n\t\t\t * @type {Boolean}\n\t\t\t */\n\t this.integer = options.integer;\n\t };\n\t Tone.extend(Tone.CtrlRandom);\n\t /**\n\t\t * The defaults\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.CtrlRandom.defaults = {\n\t 'min': 0,\n\t 'max': 1,\n\t 'integer': false\n\t };\n\t /**\n\t\t * Return a random value between min and max. \n\t\t * @readOnly\n\t\t * @memberOf Tone.CtrlRandom#\n\t\t * @type {*}\n\t\t * @name value\n\t\t */\n\t Object.defineProperty(Tone.CtrlRandom.prototype, 'value', {\n\t get: function () {\n\t var min = this.toSeconds(this.min);\n\t var max = this.toSeconds(this.max);\n\t var rand = Math.random();\n\t var val = rand * min + (1 - rand) * max;\n\t if (this.integer) {\n\t val = Math.floor(val);\n\t }\n\t return val;\n\t }\n\t });\n\t return Tone.CtrlRandom;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * AudioBuffer.copyToChannel polyfill\n\t\t * @private\n\t\t */\n\t if (window.AudioBuffer && !AudioBuffer.prototype.copyToChannel) {\n\t AudioBuffer.prototype.copyToChannel = function (src, chanNum, start) {\n\t var channel = this.getChannelData(chanNum);\n\t start = start || 0;\n\t for (var i = 0; i < channel.length; i++) {\n\t channel[i + start] = src[i];\n\t }\n\t };\n\t AudioBuffer.prototype.copyFromChannel = function (dest, chanNum, start) {\n\t var channel = this.getChannelData(chanNum);\n\t start = start || 0;\n\t for (var i = 0; i < channel.length; i++) {\n\t dest[i] = channel[i + start];\n\t }\n\t };\n\t }\n\t /**\n\t\t * @class Buffer loading and storage. Tone.Buffer is used internally by all \n\t\t * classes that make requests for audio files such as Tone.Player,\n\t\t * Tone.Sampler and Tone.Convolver.\n\t\t * <br><br>\n\t\t * Aside from load callbacks from individual buffers, Tone.Buffer \n\t\t * \t\tprovides static methods which keep track of the loading progress \n\t\t * \t\tof all of the buffers. These methods are Tone.Buffer.on(\"load\" / \"progress\" / \"error\")\n\t\t *\n\t\t * @constructor \n\t\t * @extends {Tone}\n\t\t * @param {AudioBuffer|string} url The url to load, or the audio buffer to set. \n\t\t * @param {Function=} onload A callback which is invoked after the buffer is loaded. \n\t\t * It's recommended to use Tone.Buffer.onload instead \n\t\t * since it will give you a callback when ALL buffers are loaded.\n\t\t * @param {Function=} onerror The callback to invoke if there is an error\n\t\t * @example\n\t\t * var buffer = new Tone.Buffer(\"path/to/sound.mp3\", function(){\n\t\t * \t//the buffer is now available.\n\t\t * \tvar buff = buffer.get();\n\t\t * });\n\t\t */\n\t Tone.Buffer = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'url',\n\t 'onload',\n\t 'onerror'\n\t ], Tone.Buffer.defaults);\n\t /**\n\t\t\t * stores the loaded AudioBuffer\n\t\t\t * @type {AudioBuffer}\n\t\t\t * @private\n\t\t\t */\n\t this._buffer = null;\n\t /**\n\t\t\t * indicates if the buffer should be reversed or not\n\t\t\t * @type {Boolean}\n\t\t\t * @private\n\t\t\t */\n\t this._reversed = options.reverse;\n\t /**\n\t\t\t * The XHR\n\t\t\t * @type {XMLHttpRequest}\n\t\t\t * @private\n\t\t\t */\n\t this._xhr = null;\n\t if (options.url instanceof AudioBuffer || options.url instanceof Tone.Buffer) {\n\t this.set(options.url);\n\t // invoke the onload callback\n\t if (options.onload) {\n\t options.onload(this);\n\t }\n\t } else if (this.isString(options.url)) {\n\t this.load(options.url, options.onload, options.onerror);\n\t }\n\t };\n\t Tone.extend(Tone.Buffer);\n\t /**\n\t\t * the default parameters\n\t\t * @type {Object}\n\t\t */\n\t Tone.Buffer.defaults = {\n\t 'url': undefined,\n\t 'reverse': false\n\t };\n\t /**\n\t\t * Pass in an AudioBuffer or Tone.Buffer to set the value\n\t\t * of this buffer.\n\t\t * @param {AudioBuffer|Tone.Buffer} buffer the buffer\n\t\t * @returns {Tone.Buffer} this\n\t\t */\n\t Tone.Buffer.prototype.set = function (buffer) {\n\t if (buffer instanceof Tone.Buffer) {\n\t this._buffer = buffer.get();\n\t } else {\n\t this._buffer = buffer;\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * @return {AudioBuffer} The audio buffer stored in the object.\n\t\t */\n\t Tone.Buffer.prototype.get = function () {\n\t return this._buffer;\n\t };\n\t /**\n\t\t * Makes an xhr reqest for the selected url then decodes\n\t\t * the file as an audio buffer. Invokes\n\t\t * the callback once the audio buffer loads.\n\t\t * @param {String} url The url of the buffer to load.\n\t\t * filetype support depends on the\n\t\t * browser.\n\t\t * @returns {Promise} returns a Promise which resolves with the Tone.Buffer\n\t\t */\n\t Tone.Buffer.prototype.load = function (url, onload, onerror) {\n\t var promise = new Promise(function (load, error) {\n\t this._xhr = Tone.Buffer.load(url, //success\n\t function (buff) {\n\t this._xhr = null;\n\t this.set(buff);\n\t load(this);\n\t if (onload) {\n\t onload(this);\n\t }\n\t }.bind(this), //error\n\t function (err) {\n\t this._xhr = null;\n\t error(err);\n\t if (onerror) {\n\t onerror(err);\n\t }\n\t }.bind(this));\n\t }.bind(this));\n\t return promise;\n\t };\n\t /**\n\t\t * dispose and disconnect\n\t\t * @returns {Tone.Buffer} this\n\t\t */\n\t Tone.Buffer.prototype.dispose = function () {\n\t Tone.Emitter.prototype.dispose.call(this);\n\t this._buffer = null;\n\t if (this._xhr) {\n\t Tone.Buffer._currentDownloads--;\n\t this._xhr.abort();\n\t this._xhr = null;\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * If the buffer is loaded or not\n\t\t * @memberOf Tone.Buffer#\n\t\t * @type {Boolean}\n\t\t * @name loaded\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone.Buffer.prototype, 'loaded', {\n\t get: function () {\n\t return this.length > 0;\n\t }\n\t });\n\t /**\n\t\t * The duration of the buffer. \n\t\t * @memberOf Tone.Buffer#\n\t\t * @type {Number}\n\t\t * @name duration\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone.Buffer.prototype, 'duration', {\n\t get: function () {\n\t if (this._buffer) {\n\t return this._buffer.duration;\n\t } else {\n\t return 0;\n\t }\n\t }\n\t });\n\t /**\n\t\t * The length of the buffer in samples\n\t\t * @memberOf Tone.Buffer#\n\t\t * @type {Number}\n\t\t * @name length\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone.Buffer.prototype, 'length', {\n\t get: function () {\n\t if (this._buffer) {\n\t return this._buffer.length;\n\t } else {\n\t return 0;\n\t }\n\t }\n\t });\n\t /**\n\t\t * The number of discrete audio channels. Returns 0 if no buffer\n\t\t * is loaded.\n\t\t * @memberOf Tone.Buffer#\n\t\t * @type {Number}\n\t\t * @name numberOfChannels\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone.Buffer.prototype, 'numberOfChannels', {\n\t get: function () {\n\t if (this._buffer) {\n\t return this._buffer.numberOfChannels;\n\t } else {\n\t return 0;\n\t }\n\t }\n\t });\n\t /**\n\t\t * Set the audio buffer from the array\n\t\t * @param {Float32Array} array The array to fill the audio buffer\n\t\t * @param {Number} [channels=1] The number of channels contained in the array. \n\t\t * If the channel is more than 1, the input array\n\t\t * is expected to be a multidimensional array\n\t\t * with dimensions equal to the number of channels.\n\t\t * @return {Tone.Buffer} this\n\t\t */\n\t Tone.Buffer.prototype.fromArray = function (array) {\n\t var isMultidimensional = array[0].length > 0;\n\t var channels = isMultidimensional ? array.length : 1;\n\t var len = isMultidimensional ? array[0].length : array.length;\n\t var buffer = this.context.createBuffer(channels, len, this.context.sampleRate);\n\t if (!isMultidimensional && channels === 1) {\n\t array = [array];\n\t }\n\t for (var c = 0; c < channels; c++) {\n\t buffer.copyToChannel(array[c], c);\n\t }\n\t this._buffer = buffer;\n\t return this;\n\t };\n\t /**\n\t\t * \tSums muliple channels into 1 channel\n\t\t * @param {Number=} channel Optionally only copy a single channel from the array.\n\t\t * @return {Array}\n\t\t */\n\t Tone.Buffer.prototype.toMono = function (chanNum) {\n\t if (this.isNumber(chanNum)) {\n\t this.fromArray(this.toArray(chanNum));\n\t } else {\n\t var outputArray = new Float32Array(this.length);\n\t var numChannels = this.numberOfChannels;\n\t for (var channel = 0; channel < numChannels; channel++) {\n\t var channelArray = this.toArray(channel);\n\t for (var i = 0; i < channelArray.length; i++) {\n\t outputArray[i] += channelArray[i];\n\t }\n\t }\n\t //divide by the number of channels\n\t outputArray = outputArray.map(function (sample) {\n\t return sample / numChannels;\n\t });\n\t this.fromArray(outputArray);\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * \tGet the buffer as an array. Single channel buffers will return a 1-dimensional \n\t\t * \tFloat32Array, and multichannel buffers will return multidimensional arrays.\n\t\t * @param {Number=} channel Optionally only copy a single channel from the array.\n\t\t * @return {Array}\n\t\t */\n\t Tone.Buffer.prototype.toArray = function (channel) {\n\t if (this.isNumber(channel)) {\n\t return this.getChannelData(channel);\n\t } else if (this.numberOfChannels === 1) {\n\t return this.toArray(0);\n\t } else {\n\t var ret = [];\n\t for (var c = 0; c < this.numberOfChannels; c++) {\n\t ret[c] = this.getChannelData(c);\n\t }\n\t return ret;\n\t }\n\t };\n\t /**\n\t\t * Returns the Float32Array representing the PCM audio data for the specific channel.\n\t\t * @param {Number} channel The channel number to return\n\t\t * @return {Float32Array} The audio as a TypedArray\n\t\t */\n\t Tone.Buffer.prototype.getChannelData = function (channel) {\n\t return this._buffer.getChannelData(channel);\n\t };\n\t /**\n\t\t * Cut a subsection of the array and return a buffer of the\n\t\t * subsection. Does not modify the original buffer\n\t\t * @param {Time} start The time to start the slice\n\t\t * @param {Time=} end The end time to slice. If none is given\n\t\t * will default to the end of the buffer\n\t\t * @return {Tone.Buffer} this\n\t\t */\n\t Tone.Buffer.prototype.slice = function (start, end) {\n\t end = this.defaultArg(end, this.duration);\n\t var startSamples = Math.floor(this.context.sampleRate * this.toSeconds(start));\n\t var endSamples = Math.floor(this.context.sampleRate * this.toSeconds(end));\n\t var replacement = [];\n\t for (var i = 0; i < this.numberOfChannels; i++) {\n\t replacement[i] = this.toArray(i).slice(startSamples, endSamples);\n\t }\n\t var retBuffer = new Tone.Buffer().fromArray(replacement);\n\t return retBuffer;\n\t };\n\t /**\n\t\t * Reverse the buffer.\n\t\t * @private\n\t\t * @return {Tone.Buffer} this\n\t\t */\n\t Tone.Buffer.prototype._reverse = function () {\n\t if (this.loaded) {\n\t for (var i = 0; i < this.numberOfChannels; i++) {\n\t Array.prototype.reverse.call(this.getChannelData(i));\n\t }\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Reverse the buffer.\n\t\t * @memberOf Tone.Buffer#\n\t\t * @type {Boolean}\n\t\t * @name reverse\n\t\t */\n\t Object.defineProperty(Tone.Buffer.prototype, 'reverse', {\n\t get: function () {\n\t return this._reversed;\n\t },\n\t set: function (rev) {\n\t if (this._reversed !== rev) {\n\t this._reversed = rev;\n\t this._reverse();\n\t }\n\t }\n\t });\n\t ///////////////////////////////////////////////////////////////////////////\n\t // STATIC METHODS\n\t ///////////////////////////////////////////////////////////////////////////\n\t //statically inherits Emitter methods\n\t Tone.Emitter.mixin(Tone.Buffer);\n\t /**\n\t\t * the static queue for all of the xhr requests\n\t\t * @type {Array}\n\t\t * @private\n\t\t */\n\t Tone.Buffer._downloadQueue = [];\n\t /**\n\t\t * the total number of downloads\n\t\t * @type {Number}\n\t\t * @private\n\t\t */\n\t Tone.Buffer._currentDownloads = 0;\n\t /**\n\t\t * A path which is prefixed before every url.\n\t\t * @type {String}\n\t\t * @static\n\t\t */\n\t Tone.Buffer.baseUrl = '';\n\t /**\n\t\t * Loads a url using XMLHttpRequest.\n\t\t * @param {String} url\n\t\t * @param {Function} onload\n\t\t * @param {Function} onerror\n\t\t * @param {Function} onprogress\n\t\t * @return {XMLHttpRequest}\n\t\t */\n\t Tone.Buffer.load = function (url, onload, onerror) {\n\t //default\n\t onload = onload || Tone.noOp;\n\t function onError(e) {\n\t if (onerror) {\n\t onerror(e);\n\t Tone.Buffer.emit('error', e);\n\t } else {\n\t throw new Error(e);\n\t }\n\t }\n\t function onProgress() {\n\t //calculate the progress\n\t var totalProgress = 0;\n\t for (var i = 0; i < Tone.Buffer._downloadQueue.length; i++) {\n\t totalProgress += Tone.Buffer._downloadQueue[i].progress;\n\t }\n\t Tone.Buffer.emit('progress', totalProgress / Tone.Buffer._downloadQueue.length);\n\t }\n\t var request = new XMLHttpRequest();\n\t request.open('GET', Tone.Buffer.baseUrl + url, true);\n\t request.responseType = 'arraybuffer';\n\t //start out as 0\n\t request.progress = 0;\n\t Tone.Buffer._currentDownloads++;\n\t Tone.Buffer._downloadQueue.push(request);\n\t request.addEventListener('load', function () {\n\t if (request.status === 200) {\n\t Tone.context.decodeAudioData(request.response, function (buff) {\n\t request.progress = 1;\n\t onProgress();\n\t onload(buff);\n\t Tone.Buffer._currentDownloads--;\n\t if (Tone.Buffer._currentDownloads === 0) {\n\t // clear the downloads\n\t Tone.Buffer._downloadQueue = [];\n\t //emit the event at the end\n\t Tone.Buffer.emit('load');\n\t }\n\t }, function () {\n\t onError('Tone.Buffer: could not decode audio data: ' + url);\n\t });\n\t } else {\n\t onError('Tone.Buffer: could not locate file: ' + url);\n\t }\n\t });\n\t request.addEventListener('error', onError);\n\t request.addEventListener('progress', function (event) {\n\t if (event.lengthComputable) {\n\t //only go to 95%, the last 5% is when the audio is decoded\n\t request.progress = event.loaded / event.total * 0.95;\n\t onProgress();\n\t }\n\t });\n\t request.send();\n\t return request;\n\t };\n\t /**\n\t\t * Stop all of the downloads in progress\n\t\t * @return {Tone.Buffer}\n\t\t * @static\n\t\t */\n\t Tone.Buffer.cancelDownloads = function () {\n\t Tone.Buffer._downloadQueue.forEach(function (request) {\n\t request.abort();\n\t });\n\t Tone.Buffer._currentDownloads = 0;\n\t return Tone.Buffer;\n\t };\n\t /**\n\t\t * Checks a url's extension to see if the current browser can play that file type.\n\t\t * @param {String} url The url/extension to test\n\t\t * @return {Boolean} If the file extension can be played\n\t\t * @static\n\t\t * @example\n\t\t * Tone.Buffer.supportsType(\"wav\"); //returns true\n\t\t * Tone.Buffer.supportsType(\"path/to/file.wav\"); //returns true\n\t\t */\n\t Tone.Buffer.supportsType = function (url) {\n\t var extension = url.split('.');\n\t extension = extension[extension.length - 1];\n\t var response = document.createElement('audio').canPlayType('audio/' + extension);\n\t return response !== '';\n\t };\n\t /**\n\t\t * Returns a Promise which resolves when all of the buffers have loaded\n\t\t * @return {Promise}\n\t\t */\n\t Tone.loaded = function () {\n\t var onload, onerror;\n\t function removeEvents() {\n\t //remove the events when it's resolved\n\t Tone.Buffer.off('load', onload);\n\t Tone.Buffer.off('error', onerror);\n\t }\n\t return new Promise(function (success, fail) {\n\t onload = function () {\n\t success();\n\t };\n\t onerror = function () {\n\t fail();\n\t };\n\t //add the event listeners\n\t Tone.Buffer.on('load', onload);\n\t Tone.Buffer.on('error', onerror);\n\t }).then(removeEvents).catch(function (e) {\n\t removeEvents();\n\t throw new Error(e);\n\t });\n\t };\n\t return Tone.Buffer;\n\t});\n\tModule(function (Tone) {\n\t /**\n\t\t * @class A data structure for holding multiple buffers.\n\t\t * \n\t\t * @param {Object|Array} urls An object literal or array\n\t\t * of urls to load.\n\t\t * @param {Function=} callback The callback to invoke when\n\t\t * the buffers are loaded. \n\t\t * @extends {Tone}\n\t\t * @example\n\t\t * //load a whole bank of piano samples\n\t\t * var pianoSamples = new Tone.Buffers({\n\t\t * \t\"C4\" : \"path/to/C4.mp3\"\n\t\t * \t\"C#4\" : \"path/to/C#4.mp3\"\n\t\t * \t\"D4\" : \"path/to/D4.mp3\"\n\t\t * \t\"D#4\" : \"path/to/D#4.mp3\"\n\t\t * \t...\n\t\t * }, function(){\n\t\t * \t//play one of the samples when they all load\n\t\t * \tplayer.buffer = pianoSamples.get(\"C4\");\n\t\t * \tplayer.start();\n\t\t * });\n\t\t * \n\t\t */\n\t Tone.Buffers = function (urls, onload, baseUrl) {\n\t /**\n\t\t\t * All of the buffers\n\t\t\t * @type {Object}\n\t\t\t * @private\n\t\t\t */\n\t this._buffers = {};\n\t /**\n\t\t\t * A path which is prefixed before every url.\n\t\t\t * @type {String}\n\t\t\t */\n\t this.baseUrl = this.defaultArg(baseUrl, '');\n\t urls = this._flattenUrls(urls);\n\t this._loadingCount = 0;\n\t //add each one\n\t for (var key in urls) {\n\t this._loadingCount++;\n\t this.add(key, urls[key], this._bufferLoaded.bind(this, onload));\n\t }\n\t };\n\t Tone.extend(Tone.Buffers);\n\t /**\n\t\t * True if the buffers object has a buffer by that name.\n\t\t * @param {String|Number} name The key or index of the \n\t\t * buffer.\n\t\t * @return {Boolean}\n\t\t */\n\t Tone.Buffers.prototype.has = function (name) {\n\t return this._buffers.hasOwnProperty(name);\n\t };\n\t /**\n\t\t * Get a buffer by name. If an array was loaded, \n\t\t * then use the array index.\n\t\t * @param {String|Number} name The key or index of the \n\t\t * buffer.\n\t\t * @return {Tone.Buffer}\n\t\t */\n\t Tone.Buffers.prototype.get = function (name) {\n\t if (this.has(name)) {\n\t return this._buffers[name];\n\t } else {\n\t throw new Error('Tone.Buffers: no buffer named ' + name);\n\t }\n\t };\n\t /**\n\t\t * A buffer was loaded. decrement the counter.\n\t\t * @param {Function} callback \n\t\t * @private\n\t\t */\n\t Tone.Buffers.prototype._bufferLoaded = function (callback) {\n\t this._loadingCount--;\n\t if (this._loadingCount === 0 && callback) {\n\t callback(this);\n\t }\n\t };\n\t /**\n\t\t * If the buffers are loaded or not\n\t\t * @memberOf Tone.Buffers#\n\t\t * @type {Boolean}\n\t\t * @name loaded\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone.Buffers.prototype, 'loaded', {\n\t get: function () {\n\t var isLoaded = true;\n\t for (var buffName in this._buffers) {\n\t var buff = this.get(buffName);\n\t isLoaded = isLoaded && buff.loaded;\n\t }\n\t return isLoaded;\n\t }\n\t });\n\t /**\n\t\t * Add a buffer by name and url to the Buffers\n\t\t * @param {String} name A unique name to give\n\t\t * the buffer\n\t\t * @param {String|Tone.Buffer|Audiobuffer} url Either the url of the bufer, \n\t\t * or a buffer which will be added\n\t\t * with the given name.\n\t\t * @param {Function=} callback The callback to invoke \n\t\t * when the url is loaded.\n\t\t */\n\t Tone.Buffers.prototype.add = function (name, url, callback) {\n\t callback = this.defaultArg(callback, Tone.noOp);\n\t if (url instanceof Tone.Buffer) {\n\t this._buffers[name] = url;\n\t callback(this);\n\t } else if (url instanceof AudioBuffer) {\n\t this._buffers[name] = new Tone.Buffer(url);\n\t callback(this);\n\t } else if (this.isString(url)) {\n\t this._buffers[name] = new Tone.Buffer(this.baseUrl + url, callback);\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Flatten an object into a single depth object. \n\t\t * thanks to https://gist.github.com/penguinboy/762197\n\t\t * @param {Object} ob \t\n\t\t * @return {Object} \n\t\t * @private\n\t\t */\n\t Tone.Buffers.prototype._flattenUrls = function (ob) {\n\t var toReturn = {};\n\t for (var i in ob) {\n\t if (!ob.hasOwnProperty(i))\n\t continue;\n\t if (this.isObject(ob[i])) {\n\t var flatObject = this._flattenUrls(ob[i]);\n\t for (var x in flatObject) {\n\t if (!flatObject.hasOwnProperty(x))\n\t continue;\n\t toReturn[i + '.' + x] = flatObject[x];\n\t }\n\t } else {\n\t toReturn[i] = ob[i];\n\t }\n\t }\n\t return toReturn;\n\t };\n\t /**\n\t\t * Clean up.\n\t\t * @return {Tone.Buffers} this\n\t\t */\n\t Tone.Buffers.prototype.dispose = function () {\n\t for (var name in this._buffers) {\n\t this._buffers[name].dispose();\n\t }\n\t this._buffers = null;\n\t return this;\n\t };\n\t return Tone.Buffers;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * buses are another way of routing audio\n\t\t *\n\t\t * augments Tone.prototype to include send and recieve\n\t\t */\n\t /**\n\t\t * All of the routes\n\t\t * \n\t\t * @type {Object}\n\t\t * @static\n\t\t * @private\n\t\t */\n\t var Buses = {};\n\t /**\n\t\t * Send this signal to the channel name. \n\t\t * @param {string} channelName A named channel to send the signal to.\n\t\t * @param {Decibels} amount The amount of the source to send to the bus. \n\t\t * @return {GainNode} The gain node which connects this node to the desired channel. \n\t\t * Can be used to adjust the levels of the send.\n\t\t * @example\n\t\t * source.send(\"reverb\", -12);\n\t\t */\n\t Tone.prototype.send = function (channelName, amount) {\n\t if (!Buses.hasOwnProperty(channelName)) {\n\t Buses[channelName] = this.context.createGain();\n\t }\n\t amount = this.defaultArg(amount, 0);\n\t var sendKnob = new Tone.Gain(amount, Tone.Type.Decibels);\n\t this.output.chain(sendKnob, Buses[channelName]);\n\t return sendKnob;\n\t };\n\t /**\n\t\t * Recieve the input from the desired channelName to the input\n\t\t *\n\t\t * @param {string} channelName A named channel to send the signal to.\n\t\t * @param {AudioNode} [input] If no input is selected, the\n\t\t * input of the current node is\n\t\t * chosen. \n\t\t * @returns {Tone} this\n\t\t * @example\n\t\t * reverbEffect.receive(\"reverb\");\n\t\t */\n\t Tone.prototype.receive = function (channelName, input) {\n\t if (!Buses.hasOwnProperty(channelName)) {\n\t Buses[channelName] = this.context.createGain();\n\t }\n\t if (this.isUndef(input)) {\n\t input = this.input;\n\t }\n\t Buses[channelName].connect(input);\n\t return this;\n\t };\n\t //remove all the send/receives when a new audio context is passed in\n\t Tone.Context.on('init', function (context) {\n\t if (context.Buses) {\n\t Buses = context.Buses;\n\t } else {\n\t Buses = {};\n\t context.Buses = Buses;\n\t }\n\t });\n\t return Tone;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Draw is useful for synchronizing visuals and audio events.\n\t\t * Callbacks from Tone.Transport or any of the Tone.Event classes\n\t\t * always happen _before_ the scheduled time and are not synchronized\n\t\t * to the animation frame so they are not good for triggering tightly\n\t\t * synchronized visuals and sound. Tone.Draw makes it easy to schedule\n\t\t * callbacks using the AudioContext time and uses requestAnimationFrame.\n\t\t * \n\t\t * @singleton\n\t\t * @extends {Tone}\n\t\t * @example\n\t\t * Tone.Transport.schedule(function(time){\n\t\t * \t//use the time argument to schedule a callback with Tone.Draw\n\t\t * \tTone.Draw.schedule(function(){\n\t\t * \t\t//do drawing or DOM manipulation here\n\t\t * \t}, time)\n\t\t * }, \"+0.5\")\n\t\t */\n\t Tone.Draw = function () {\n\t /**\n\t\t\t * All of the events.\n\t\t\t * @type {Tone.Timeline}\n\t\t\t * @private\n\t\t\t */\n\t this._events = new Tone.Timeline();\n\t /**\n\t\t\t * The duration after which events are not invoked.\n\t\t\t * @type {Number}\n\t\t\t * @default 0.25\n\t\t\t */\n\t this.expiration = 0.25;\n\t /**\n\t\t\t * The amount of time before the scheduled time \n\t\t\t * that the callback can be invoked. Default is\n\t\t\t * half the time of an animation frame (0.008 seconds).\n\t\t\t * @type {Number}\n\t\t\t * @default 0.008\n\t\t\t */\n\t this.anticipation = 0.008;\n\t /**\n\t\t\t * The draw loop\n\t\t\t * @type {Function}\n\t\t\t * @private\n\t\t\t */\n\t this._boundDrawLoop = this._drawLoop.bind(this);\n\t };\n\t Tone.extend(Tone.Draw);\n\t /**\n\t\t * Schedule a function at the given time to be invoked\n\t\t * on the nearest animation frame.\n\t\t * @param {Function} callback Callback is invoked at the given time.\n\t\t * @param {Time} time The time relative to the AudioContext time\n\t\t * to invoke the callback.\n\t\t * @return {Tone.Draw} this\n\t\t */\n\t Tone.Draw.prototype.schedule = function (callback, time) {\n\t this._events.add({\n\t callback: callback,\n\t time: this.toSeconds(time)\n\t });\n\t //start the draw loop on the first event\n\t if (this._events.length === 1) {\n\t requestAnimationFrame(this._boundDrawLoop);\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Cancel events scheduled after the given time\n\t\t * @param {Time=} after Time after which scheduled events will \n\t\t * be removed from the scheduling timeline.\n\t\t * @return {Tone.Draw} this\n\t\t */\n\t Tone.Draw.prototype.cancel = function (after) {\n\t this._events.cancel(this.toSeconds(after));\n\t return this;\n\t };\n\t /**\n\t\t * The draw loop\n\t\t * @private\n\t\t */\n\t Tone.Draw.prototype._drawLoop = function () {\n\t var now = Tone.now();\n\t while (this._events.length && this._events.peek().time - this.anticipation <= now) {\n\t var event = this._events.shift();\n\t if (now - event.time <= this.expiration) {\n\t event.callback();\n\t }\n\t }\n\t if (this._events.length > 0) {\n\t requestAnimationFrame(this._boundDrawLoop);\n\t }\n\t };\n\t //make a singleton\n\t Tone.Draw = new Tone.Draw();\n\t return Tone.Draw;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Both Tone.Panner3D and Tone.Listener have a position in 3D space \n\t\t * using a right-handed cartesian coordinate system. \n\t\t * The units used in the coordinate system are not defined; \n\t\t * these coordinates are independent/invariant of any particular \n\t\t * units such as meters or feet. Tone.Panner3D objects have an forward \n\t\t * vector representing the direction the sound is projecting. Additionally, \n\t\t * they have a sound cone representing how directional the sound is. \n\t\t * For example, the sound could be omnidirectional, in which case it would \n\t\t * be heard anywhere regardless of its forward, or it can be more directional \n\t\t * and heard only if it is facing the listener. Tone.Listener objects \n\t\t * (representing a person's ears) have an forward and up vector \n\t\t * representing in which direction the person is facing. Because both the \n\t\t * source stream and the listener can be moving, they both have a velocity \n\t\t * vector representing both the speed and direction of movement. Taken together, \n\t\t * these two velocities can be used to generate a doppler shift effect which changes the pitch.\n\t\t * <br><br>\n\t\t * Note: the position of the Listener will have no effect on nodes not connected to a Tone.Panner3D\n\t\t * \n\t\t * @constructor\n\t\t * @extends {Tone}\n\t\t * @singleton\n\t\t * @param {Number} positionX The initial x position.\n\t\t * @param {Number} positionY The initial y position.\n\t\t * @param {Number} positionZ The initial z position.\n\t\t */\n\t Tone.Listener = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'positionX',\n\t 'positionY',\n\t 'positionZ'\n\t ], ListenerConstructor.defaults);\n\t /**\n\t\t\t * Holds the current forward orientation\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._orientation = [\n\t options.forwardX,\n\t options.forwardY,\n\t options.forwardZ,\n\t options.upX,\n\t options.upY,\n\t options.upZ\n\t ];\n\t /**\n\t\t\t * Holds the current position\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._position = [\n\t options.positionX,\n\t options.positionY,\n\t options.positionZ\n\t ];\n\t // set the default position/forward\n\t this.forwardX = options.forwardX;\n\t this.forwardY = options.forwardY;\n\t this.forwardZ = options.forwardZ;\n\t this.upX = options.upX;\n\t this.upY = options.upY;\n\t this.upZ = options.upZ;\n\t this.positionX = options.positionX;\n\t this.positionY = options.positionY;\n\t this.positionZ = options.positionZ;\n\t };\n\t Tone.extend(Tone.Listener);\n\t /**\n\t\t * the default parameters\n\t\t * @static\n\t\t * @const\n\t\t * @type {Object}\n\t\t * Defaults according to the specification\n\t\t */\n\t Tone.Listener.defaults = {\n\t 'positionX': 0,\n\t 'positionY': 0,\n\t 'positionZ': 0,\n\t 'forwardX': 0,\n\t 'forwardY': 0,\n\t 'forwardZ': 1,\n\t 'upX': 0,\n\t 'upY': 1,\n\t 'upZ': 0\n\t };\n\t /**\n\t\t * The ramp time which is applied to the setTargetAtTime\n\t\t * @type {Number}\n\t\t * @private\n\t\t */\n\t Tone.Listener.prototype._rampTimeConstant = 0.01;\n\t /**\n\t\t * Sets the position of the listener in 3d space.\t\n\t\t * @param {Number} x\n\t\t * @param {Number} y\n\t\t * @param {Number} z\n\t\t * @return {Tone.Listener} this\n\t\t */\n\t Tone.Listener.prototype.setPosition = function (x, y, z) {\n\t if (this.context.listener.positionX) {\n\t var now = this.now();\n\t this.context.listener.positionX.setTargetAtTime(x, now, this._rampTimeConstant);\n\t this.context.listener.positionY.setTargetAtTime(y, now, this._rampTimeConstant);\n\t this.context.listener.positionZ.setTargetAtTime(z, now, this._rampTimeConstant);\n\t } else {\n\t this.context.listener.setPosition(x, y, z);\n\t }\n\t this._position = Array.prototype.slice.call(arguments);\n\t return this;\n\t };\n\t /**\n\t\t * Sets the orientation of the listener using two vectors, the forward\n\t\t * vector (which direction the listener is facing) and the up vector \n\t\t * (which the up direction of the listener). An up vector\n\t\t * of 0, 0, 1 is equivalent to the listener standing up in the Z direction. \n\t\t * @param {Number} x\n\t\t * @param {Number} y\n\t\t * @param {Number} z\n\t\t * @param {Number} upX\n\t\t * @param {Number} upY\n\t\t * @param {Number} upZ\n\t\t * @return {Tone.Listener} this\n\t\t */\n\t Tone.Listener.prototype.setOrientation = function (x, y, z, upX, upY, upZ) {\n\t if (this.context.listener.forwardX) {\n\t var now = this.now();\n\t this.context.listener.forwardX.setTargetAtTime(x, now, this._rampTimeConstant);\n\t this.context.listener.forwardY.setTargetAtTime(y, now, this._rampTimeConstant);\n\t this.context.listener.forwardZ.setTargetAtTime(z, now, this._rampTimeConstant);\n\t this.context.listener.upX.setTargetAtTime(upX, now, this._rampTimeConstant);\n\t this.context.listener.upY.setTargetAtTime(upY, now, this._rampTimeConstant);\n\t this.context.listener.upZ.setTargetAtTime(upZ, now, this._rampTimeConstant);\n\t } else {\n\t this.context.listener.setOrientation(x, y, z, upX, upY, upZ);\n\t }\n\t this._orientation = Array.prototype.slice.call(arguments);\n\t return this;\n\t };\n\t /**\n\t\t * The x position of the panner object.\n\t\t * @type {Number}\n\t\t * @memberOf Tone.Listener#\n\t\t * @name positionX\n\t\t */\n\t Object.defineProperty(Tone.Listener.prototype, 'positionX', {\n\t set: function (pos) {\n\t this._position[0] = pos;\n\t this.setPosition.apply(this, this._position);\n\t },\n\t get: function () {\n\t return this._position[0];\n\t }\n\t });\n\t /**\n\t\t * The y position of the panner object.\n\t\t * @type {Number}\n\t\t * @memberOf Tone.Listener#\n\t\t * @name positionY\n\t\t */\n\t Object.defineProperty(Tone.Listener.prototype, 'positionY', {\n\t set: function (pos) {\n\t this._position[1] = pos;\n\t this.setPosition.apply(this, this._position);\n\t },\n\t get: function () {\n\t return this._position[1];\n\t }\n\t });\n\t /**\n\t\t * The z position of the panner object.\n\t\t * @type {Number}\n\t\t * @memberOf Tone.Listener#\n\t\t * @name positionZ\n\t\t */\n\t Object.defineProperty(Tone.Listener.prototype, 'positionZ', {\n\t set: function (pos) {\n\t this._position[2] = pos;\n\t this.setPosition.apply(this, this._position);\n\t },\n\t get: function () {\n\t return this._position[2];\n\t }\n\t });\n\t /**\n\t\t * The x coordinate of the listeners front direction. i.e. \n\t\t * which way they are facing.\n\t\t * @type {Number}\n\t\t * @memberOf Tone.Listener#\n\t\t * @name forwardX\n\t\t */\n\t Object.defineProperty(Tone.Listener.prototype, 'forwardX', {\n\t set: function (pos) {\n\t this._orientation[0] = pos;\n\t this.setOrientation.apply(this, this._orientation);\n\t },\n\t get: function () {\n\t return this._orientation[0];\n\t }\n\t });\n\t /**\n\t\t * The y coordinate of the listeners front direction. i.e. \n\t\t * which way they are facing.\n\t\t * @type {Number}\n\t\t * @memberOf Tone.Listener#\n\t\t * @name forwardY\n\t\t */\n\t Object.defineProperty(Tone.Listener.prototype, 'forwardY', {\n\t set: function (pos) {\n\t this._orientation[1] = pos;\n\t this.setOrientation.apply(this, this._orientation);\n\t },\n\t get: function () {\n\t return this._orientation[1];\n\t }\n\t });\n\t /**\n\t\t * The z coordinate of the listeners front direction. i.e. \n\t\t * which way they are facing.\n\t\t * @type {Number}\n\t\t * @memberOf Tone.Listener#\n\t\t * @name forwardZ\n\t\t */\n\t Object.defineProperty(Tone.Listener.prototype, 'forwardZ', {\n\t set: function (pos) {\n\t this._orientation[2] = pos;\n\t this.setOrientation.apply(this, this._orientation);\n\t },\n\t get: function () {\n\t return this._orientation[2];\n\t }\n\t });\n\t /**\n\t\t * The x coordinate of the listener's up direction. i.e.\n\t\t * the direction the listener is standing in.\n\t\t * @type {Number}\n\t\t * @memberOf Tone.Listener#\n\t\t * @name upX\n\t\t */\n\t Object.defineProperty(Tone.Listener.prototype, 'upX', {\n\t set: function (pos) {\n\t this._orientation[3] = pos;\n\t this.setOrientation.apply(this, this._orientation);\n\t },\n\t get: function () {\n\t return this._orientation[3];\n\t }\n\t });\n\t /**\n\t\t * The y coordinate of the listener's up direction. i.e.\n\t\t * the direction the listener is standing in.\n\t\t * @type {Number}\n\t\t * @memberOf Tone.Listener#\n\t\t * @name upY\n\t\t */\n\t Object.defineProperty(Tone.Listener.prototype, 'upY', {\n\t set: function (pos) {\n\t this._orientation[4] = pos;\n\t this.setOrientation.apply(this, this._orientation);\n\t },\n\t get: function () {\n\t return this._orientation[4];\n\t }\n\t });\n\t /**\n\t\t * The z coordinate of the listener's up direction. i.e.\n\t\t * the direction the listener is standing in.\n\t\t * @type {Number}\n\t\t * @memberOf Tone.Listener#\n\t\t * @name upZ\n\t\t */\n\t Object.defineProperty(Tone.Listener.prototype, 'upZ', {\n\t set: function (pos) {\n\t this._orientation[5] = pos;\n\t this.setOrientation.apply(this, this._orientation);\n\t },\n\t get: function () {\n\t return this._orientation[5];\n\t }\n\t });\n\t /**\n\t\t * Clean up.\n\t\t * @returns {Tone.Listener} this\n\t\t */\n\t Tone.Listener.prototype.dispose = function () {\n\t this._orientation = null;\n\t this._position = null;\n\t return this;\n\t };\n\t //SINGLETON SETUP\n\t var ListenerConstructor = Tone.Listener;\n\t Tone.Listener = new ListenerConstructor();\n\t Tone.Context.on('init', function (context) {\n\t if (context.Listener instanceof ListenerConstructor) {\n\t //a single listener object\n\t Tone.Listener = context.Listener;\n\t } else {\n\t //make new Listener insides\n\t Tone.Listener = new ListenerConstructor();\n\t }\n\t context.Listener = Tone.Listener;\n\t });\n\t //END SINGLETON SETUP\n\t return Tone.Listener;\n\t});\n\tModule(function (Tone) {\n\t /**\n\t\t * shim\n\t\t * @private\n\t\t */\n\t if (!window.hasOwnProperty('OfflineAudioContext') && window.hasOwnProperty('webkitOfflineAudioContext')) {\n\t window.OfflineAudioContext = window.webkitOfflineAudioContext;\n\t }\n\t /**\n\t\t * @class Wrapper around the OfflineAudioContext\n\t\t * @extends {Tone.Context\n\t\t * @param {Number} channels The number of channels to render\n\t\t * @param {Number} duration The duration to render in samples\n\t\t * @param {Number} sampleRate the sample rate to render at\n\t\t */\n\t Tone.OfflineContext = function (channels, duration, sampleRate) {\n\t /**\n\t\t\t * The offline context\n\t\t\t * @private\n\t\t\t * @type {OfflineAudioContext}\n\t\t\t */\n\t var offlineContext = new OfflineAudioContext(channels, duration * sampleRate, sampleRate);\n\t //wrap the methods/members\n\t Tone.Context.call(this, offlineContext);\n\t /**\n\t\t\t * A private reference to the duration\n\t\t\t * @private\n\t\t\t * @type {Number}\n\t\t\t */\n\t this._duration = duration;\n\t /**\n\t\t\t * An artificial clock source\n\t\t\t * @type {Number}\n\t\t\t * @private\n\t\t\t */\n\t this._currentTime = 0;\n\t //modify the lookAhead and updateInterval to one block\n\t this.lookAhead = this.blockTime;\n\t this.updateInterval = this.blockTime;\n\t };\n\t Tone.extend(Tone.OfflineContext, Tone.Context);\n\t /**\n\t\t * Override the now method to point to the internal clock time\n\t\t * @return {Number}\n\t\t */\n\t Tone.OfflineContext.prototype.now = function () {\n\t return this._currentTime;\n\t };\n\t /**\n\t\t * Overwrite this method since the worker is not necessary for the offline context\n\t\t * @private\n\t\t */\n\t Tone.OfflineContext.prototype._createWorker = function () {\n\t //dummy worker that does nothing\n\t return {\n\t postMessage: function () {\n\t }\n\t };\n\t };\n\t /**\n\t\t * Render the output of the OfflineContext\n\t\t * @return {Promise}\n\t\t */\n\t Tone.OfflineContext.prototype.render = function () {\n\t while (this._duration - this._currentTime >= 0) {\n\t //invoke all the callbacks on that time\n\t this.emit('tick');\n\t //increment the clock\n\t this._currentTime += Tone.prototype.blockTime;\n\t }\n\t //promise returned is not yet implemented in all browsers\n\t return new Promise(function (done) {\n\t this._context.oncomplete = function (e) {\n\t done(e.renderedBuffer);\n\t };\n\t this._context.startRendering();\n\t }.bind(this));\n\t };\n\t return Tone.OfflineContext;\n\t});\n\tModule(function (Tone) {\n\t /**\n\t\t * Generate a buffer by rendering all of the Tone.js code within the callback using the OfflineAudioContext. \n\t\t * The OfflineAudioContext is capable of rendering much faster than real time in many cases. \n\t\t * The callback function also passes in an offline instance of Tone.Transport which can be used\n\t\t * to schedule events along the Transport. \n\t\t * @param {Function} callback All Tone.js nodes which are created and scheduled within this callback are recorded into the output Buffer.\n\t\t * @param {Time} duration the amount of time to record for.\n\t\t * @return {Promise} The promise which is invoked with the Tone.Buffer of the recorded output.\n\t\t * @example\n\t\t * //render 2 seconds of the oscillator\n\t\t * Tone.Offline(function(){\n\t\t * \t//only nodes created in this callback will be recorded\n\t\t * \tvar oscillator = new Tone.Oscillator().toMaster().start(0)\n\t\t * \t//schedule their events\n\t\t * }, 2).then(function(buffer){\n\t\t * \t//do something with the output buffer\n\t\t * })\n\t\t * @example\n\t\t * //can also schedule events along the Transport\n\t\t * //using the passed in Offline Transport\n\t\t * Tone.Offline(function(Transport){\n\t\t * \tvar osc = new Tone.Oscillator().toMaster()\n\t\t * \tTransport.schedule(function(time){\n\t\t * \t\tosc.start(time).stop(time + 0.1)\n\t\t * \t}, 1)\n\t\t * \tTransport.start(0.2)\n\t\t * }, 4).then(function(buffer){\n\t\t * \t//do something with the output buffer\n\t\t * })\n\t\t */\n\t Tone.Offline = function (callback, duration) {\n\t //set the OfflineAudioContext\n\t var sampleRate = Tone.context.sampleRate;\n\t var originalContext = Tone.context;\n\t var context = new Tone.OfflineContext(2, duration, sampleRate);\n\t Tone.context = context;\n\t //invoke the callback/scheduling\n\t callback(Tone.Transport);\n\t //process the audio\n\t var rendered = context.render();\n\t //return the original AudioContext\n\t Tone.context = originalContext;\n\t //return the audio\n\t return rendered.then(function (buffer) {\n\t //wrap it in a Tone.Buffer\n\t return new Tone.Buffer(buffer);\n\t });\n\t };\n\t return Tone.Offline;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * \t@class Tone.Effect is the base class for effects. Connect the effect between\n\t\t * \t the effectSend and effectReturn GainNodes, then control the amount of\n\t\t * \t effect which goes to the output using the wet control.\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone}\n\t\t * @param {NormalRange|Object} [wet] The starting wet value. \n\t\t */\n\t Tone.Effect = function () {\n\t this.createInsOuts(1, 1);\n\t //get all of the defaults\n\t var options = this.optionsObject(arguments, ['wet'], Tone.Effect.defaults);\n\t /**\n\t\t\t * the drywet knob to control the amount of effect\n\t\t\t * @type {Tone.CrossFade}\n\t\t\t * @private\n\t\t\t */\n\t this._dryWet = new Tone.CrossFade(options.wet);\n\t /**\n\t\t\t * The wet control is how much of the effected\n\t\t\t * will pass through to the output. 1 = 100% effected\n\t\t\t * signal, 0 = 100% dry signal. \n\t\t\t * @type {NormalRange}\n\t\t\t * @signal\n\t\t\t */\n\t this.wet = this._dryWet.fade;\n\t /**\n\t\t\t * connect the effectSend to the input of hte effect\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this.effectSend = new Tone.Gain();\n\t /**\n\t\t\t * connect the output of the effect to the effectReturn\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this.effectReturn = new Tone.Gain();\n\t //connections\n\t this.input.connect(this._dryWet.a);\n\t this.input.connect(this.effectSend);\n\t this.effectReturn.connect(this._dryWet.b);\n\t this._dryWet.connect(this.output);\n\t this._readOnly(['wet']);\n\t };\n\t Tone.extend(Tone.Effect);\n\t /**\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.Effect.defaults = { 'wet': 1 };\n\t /**\n\t\t * chains the effect in between the effectSend and effectReturn\n\t\t * @param {Tone} effect\n\t\t * @private\n\t\t * @returns {Tone.Effect} this\n\t\t */\n\t Tone.Effect.prototype.connectEffect = function (effect) {\n\t this.effectSend.chain(effect, this.effectReturn);\n\t return this;\n\t };\n\t /**\n\t\t * Clean up. \n\t\t * @returns {Tone.Effect} this\n\t\t */\n\t Tone.Effect.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._dryWet.dispose();\n\t this._dryWet = null;\n\t this.effectSend.dispose();\n\t this.effectSend = null;\n\t this.effectReturn.dispose();\n\t this.effectReturn = null;\n\t this._writable(['wet']);\n\t this.wet = null;\n\t return this;\n\t };\n\t return Tone.Effect;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.AutoFilter is a Tone.Filter with a Tone.LFO connected to the filter cutoff frequency.\n\t\t * Setting the LFO rate and depth allows for control over the filter modulation rate \n\t\t * and depth.\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.Effect}\n\t\t * @param {Time|Object} [frequency] The rate of the LFO.\n\t\t * @param {Frequency=} baseFrequency The lower value of the LFOs oscillation\n\t \t * @param {Frequency=} octaves The number of octaves above the baseFrequency\n\t\t * @example\n\t\t * //create an autofilter and start it's LFO\n\t\t * var autoFilter = new Tone.AutoFilter(\"4n\").toMaster().start();\n\t\t * //route an oscillator through the filter and start it\n\t\t * var oscillator = new Tone.Oscillator().connect(autoFilter).start();\n\t\t */\n\t Tone.AutoFilter = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'frequency',\n\t 'baseFrequency',\n\t 'octaves'\n\t ], Tone.AutoFilter.defaults);\n\t Tone.Effect.call(this, options);\n\t /**\n\t\t\t * the lfo which drives the filter cutoff\n\t\t\t * @type {Tone.LFO}\n\t\t\t * @private\n\t\t\t */\n\t this._lfo = new Tone.LFO({\n\t 'frequency': options.frequency,\n\t 'amplitude': options.depth\n\t });\n\t /**\n\t\t\t * The range of the filter modulating between the min and max frequency. \n\t\t\t * 0 = no modulation. 1 = full modulation.\n\t\t\t * @type {NormalRange}\n\t\t\t * @signal\n\t\t\t */\n\t this.depth = this._lfo.amplitude;\n\t /**\n\t\t\t * How fast the filter modulates between min and max. \n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.frequency = this._lfo.frequency;\n\t /**\n\t\t\t * The filter node\n\t\t\t * @type {Tone.Filter}\n\t\t\t */\n\t this.filter = new Tone.Filter(options.filter);\n\t /**\n\t\t\t * The octaves placeholder\n\t\t\t * @type {Positive}\n\t\t\t * @private\n\t\t\t */\n\t this._octaves = 0;\n\t //connections\n\t this.connectEffect(this.filter);\n\t this._lfo.connect(this.filter.frequency);\n\t this.type = options.type;\n\t this._readOnly([\n\t 'frequency',\n\t 'depth'\n\t ]);\n\t this.octaves = options.octaves;\n\t this.baseFrequency = options.baseFrequency;\n\t };\n\t //extend Effect\n\t Tone.extend(Tone.AutoFilter, Tone.Effect);\n\t /**\n\t\t * defaults\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.AutoFilter.defaults = {\n\t 'frequency': 1,\n\t 'type': 'sine',\n\t 'depth': 1,\n\t 'baseFrequency': 200,\n\t 'octaves': 2.6,\n\t 'filter': {\n\t 'type': 'lowpass',\n\t 'rolloff': -12,\n\t 'Q': 1\n\t }\n\t };\n\t /**\n\t\t * Start the effect.\n\t\t * @param {Time} [time=now] When the LFO will start. \n\t\t * @returns {Tone.AutoFilter} this\n\t\t */\n\t Tone.AutoFilter.prototype.start = function (time) {\n\t this._lfo.start(time);\n\t return this;\n\t };\n\t /**\n\t\t * Stop the effect.\n\t\t * @param {Time} [time=now] When the LFO will stop. \n\t\t * @returns {Tone.AutoFilter} this\n\t\t */\n\t Tone.AutoFilter.prototype.stop = function (time) {\n\t this._lfo.stop(time);\n\t return this;\n\t };\n\t /**\n\t\t * Sync the filter to the transport.\n\t\t * @param {Time} [delay=0] Delay time before starting the effect after the\n\t\t * Transport has started. \n\t\t * @returns {Tone.AutoFilter} this\n\t\t */\n\t Tone.AutoFilter.prototype.sync = function (delay) {\n\t this._lfo.sync(delay);\n\t return this;\n\t };\n\t /**\n\t\t * Unsync the filter from the transport.\n\t\t * @returns {Tone.AutoFilter} this\n\t\t */\n\t Tone.AutoFilter.prototype.unsync = function () {\n\t this._lfo.unsync();\n\t return this;\n\t };\n\t /**\n\t\t * Type of oscillator attached to the AutoFilter. \n\t\t * Possible values: \"sine\", \"square\", \"triangle\", \"sawtooth\".\n\t\t * @memberOf Tone.AutoFilter#\n\t\t * @type {string}\n\t\t * @name type\n\t\t */\n\t Object.defineProperty(Tone.AutoFilter.prototype, 'type', {\n\t get: function () {\n\t return this._lfo.type;\n\t },\n\t set: function (type) {\n\t this._lfo.type = type;\n\t }\n\t });\n\t /**\n\t\t * The minimum value of the filter's cutoff frequency.\n\t\t * @memberOf Tone.AutoFilter#\n\t\t * @type {Frequency}\n\t\t * @name min\n\t\t */\n\t Object.defineProperty(Tone.AutoFilter.prototype, 'baseFrequency', {\n\t get: function () {\n\t return this._lfo.min;\n\t },\n\t set: function (freq) {\n\t this._lfo.min = this.toFrequency(freq);\n\t //and set the max\n\t this.octaves = this._octaves;\n\t }\n\t });\n\t /**\n\t\t * The maximum value of the filter's cutoff frequency. \n\t\t * @memberOf Tone.AutoFilter#\n\t\t * @type {Positive}\n\t\t * @name octaves\n\t\t */\n\t Object.defineProperty(Tone.AutoFilter.prototype, 'octaves', {\n\t get: function () {\n\t return this._octaves;\n\t },\n\t set: function (oct) {\n\t this._octaves = oct;\n\t this._lfo.max = this.baseFrequency * Math.pow(2, oct);\n\t }\n\t });\n\t /**\n\t\t * Clean up. \n\t\t * @returns {Tone.AutoFilter} this\n\t\t */\n\t Tone.AutoFilter.prototype.dispose = function () {\n\t Tone.Effect.prototype.dispose.call(this);\n\t this._lfo.dispose();\n\t this._lfo = null;\n\t this.filter.dispose();\n\t this.filter = null;\n\t this._writable([\n\t 'frequency',\n\t 'depth'\n\t ]);\n\t this.frequency = null;\n\t this.depth = null;\n\t return this;\n\t };\n\t return Tone.AutoFilter;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.AutoPanner is a Tone.Panner with an LFO connected to the pan amount. \n\t\t * More on using autopanners [here](https://www.ableton.com/en/blog/autopan-chopper-effect-and-more-liveschool/).\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.Effect}\n\t\t * @param {Frequency|Object} [frequency] Rate of left-right oscillation. \n\t\t * @example\n\t\t * //create an autopanner and start it's LFO\n\t\t * var autoPanner = new Tone.AutoPanner(\"4n\").toMaster().start();\n\t\t * //route an oscillator through the panner and start it\n\t\t * var oscillator = new Tone.Oscillator().connect(autoPanner).start();\n\t\t */\n\t Tone.AutoPanner = function () {\n\t var options = this.optionsObject(arguments, ['frequency'], Tone.AutoPanner.defaults);\n\t Tone.Effect.call(this, options);\n\t /**\n\t\t\t * the lfo which drives the panning\n\t\t\t * @type {Tone.LFO}\n\t\t\t * @private\n\t\t\t */\n\t this._lfo = new Tone.LFO({\n\t 'frequency': options.frequency,\n\t 'amplitude': options.depth,\n\t 'min': -1,\n\t 'max': 1\n\t });\n\t /**\n\t\t\t * The amount of panning between left and right. \n\t\t\t * 0 = always center. 1 = full range between left and right. \n\t\t\t * @type {NormalRange}\n\t\t\t * @signal\n\t\t\t */\n\t this.depth = this._lfo.amplitude;\n\t /**\n\t\t\t * the panner node which does the panning\n\t\t\t * @type {Tone.Panner}\n\t\t\t * @private\n\t\t\t */\n\t this._panner = new Tone.Panner();\n\t /**\n\t\t\t * How fast the panner modulates between left and right. \n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.frequency = this._lfo.frequency;\n\t //connections\n\t this.connectEffect(this._panner);\n\t this._lfo.connect(this._panner.pan);\n\t this.type = options.type;\n\t this._readOnly([\n\t 'depth',\n\t 'frequency'\n\t ]);\n\t };\n\t //extend Effect\n\t Tone.extend(Tone.AutoPanner, Tone.Effect);\n\t /**\n\t\t * defaults\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.AutoPanner.defaults = {\n\t 'frequency': 1,\n\t 'type': 'sine',\n\t 'depth': 1\n\t };\n\t /**\n\t\t * Start the effect.\n\t\t * @param {Time} [time=now] When the LFO will start. \n\t\t * @returns {Tone.AutoPanner} this\n\t\t */\n\t Tone.AutoPanner.prototype.start = function (time) {\n\t this._lfo.start(time);\n\t return this;\n\t };\n\t /**\n\t\t * Stop the effect.\n\t\t * @param {Time} [time=now] When the LFO will stop. \n\t\t * @returns {Tone.AutoPanner} this\n\t\t */\n\t Tone.AutoPanner.prototype.stop = function (time) {\n\t this._lfo.stop(time);\n\t return this;\n\t };\n\t /**\n\t\t * Sync the panner to the transport.\n\t\t * @param {Time} [delay=0] Delay time before starting the effect after the\n\t\t * Transport has started. \n\t\t * @returns {Tone.AutoPanner} this\n\t\t */\n\t Tone.AutoPanner.prototype.sync = function (delay) {\n\t this._lfo.sync(delay);\n\t return this;\n\t };\n\t /**\n\t\t * Unsync the panner from the transport\n\t\t * @returns {Tone.AutoPanner} this\n\t\t */\n\t Tone.AutoPanner.prototype.unsync = function () {\n\t this._lfo.unsync();\n\t return this;\n\t };\n\t /**\n\t\t * Type of oscillator attached to the AutoFilter. \n\t\t * Possible values: \"sine\", \"square\", \"triangle\", \"sawtooth\".\n\t\t * @memberOf Tone.AutoFilter#\n\t\t * @type {string}\n\t\t * @name type\n\t\t */\n\t Object.defineProperty(Tone.AutoPanner.prototype, 'type', {\n\t get: function () {\n\t return this._lfo.type;\n\t },\n\t set: function (type) {\n\t this._lfo.type = type;\n\t }\n\t });\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.AutoPanner} this\n\t\t */\n\t Tone.AutoPanner.prototype.dispose = function () {\n\t Tone.Effect.prototype.dispose.call(this);\n\t this._lfo.dispose();\n\t this._lfo = null;\n\t this._panner.dispose();\n\t this._panner = null;\n\t this._writable([\n\t 'depth',\n\t 'frequency'\n\t ]);\n\t this.frequency = null;\n\t this.depth = null;\n\t return this;\n\t };\n\t return Tone.AutoPanner;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.AutoWah connects a Tone.Follower to a bandpass filter (Tone.Filter).\n\t\t * The frequency of the filter is adjusted proportionally to the \n\t\t * incoming signal's amplitude. Inspiration from [Tuna.js](https://github.com/Dinahmoe/tuna).\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.Effect}\n\t\t * @param {Frequency|Object} [baseFrequency] The frequency the filter is set \n\t\t * to at the low point of the wah\n\t\t * @param {Positive} [octaves] The number of octaves above the baseFrequency\n\t\t * the filter will sweep to when fully open\n\t\t * @param {Decibels} [sensitivity] The decibel threshold sensitivity for \n\t\t * the incoming signal. Normal range of -40 to 0. \n\t\t * @example\n\t\t * var autoWah = new Tone.AutoWah(50, 6, -30).toMaster();\n\t\t * //initialize the synth and connect to autowah\n\t\t * var synth = new Synth.connect(autoWah);\n\t\t * //Q value influences the effect of the wah - default is 2\n\t\t * autoWah.Q.value = 6;\n\t\t * //more audible on higher notes\n\t\t * synth.triggerAttackRelease(\"C4\", \"8n\")\n\t\t */\n\t Tone.AutoWah = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'baseFrequency',\n\t 'octaves',\n\t 'sensitivity'\n\t ], Tone.AutoWah.defaults);\n\t Tone.Effect.call(this, options);\n\t /**\n\t\t\t * The envelope follower. Set the attack/release\n\t\t\t * timing to adjust how the envelope is followed. \n\t\t\t * @type {Tone.Follower}\n\t\t\t * @private\n\t\t\t */\n\t this.follower = new Tone.Follower(options.follower);\n\t /**\n\t\t\t * scales the follower value to the frequency domain\n\t\t\t * @type {Tone}\n\t\t\t * @private\n\t\t\t */\n\t this._sweepRange = new Tone.ScaleExp(0, 1, 0.5);\n\t /**\n\t\t\t * @type {number}\n\t\t\t * @private\n\t\t\t */\n\t this._baseFrequency = options.baseFrequency;\n\t /**\n\t\t\t * @type {number}\n\t\t\t * @private\n\t\t\t */\n\t this._octaves = options.octaves;\n\t /**\n\t\t\t * the input gain to adjust the sensitivity\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this._inputBoost = new Tone.Gain();\n\t /**\n\t\t\t * @type {BiquadFilterNode}\n\t\t\t * @private\n\t\t\t */\n\t this._bandpass = new Tone.Filter({\n\t 'rolloff': -48,\n\t 'frequency': 0,\n\t 'Q': options.Q\n\t });\n\t /**\n\t\t\t * @type {Tone.Filter}\n\t\t\t * @private\n\t\t\t */\n\t this._peaking = new Tone.Filter(0, 'peaking');\n\t this._peaking.gain.value = options.gain;\n\t /**\n\t\t\t * The gain of the filter.\n\t\t\t * @type {Number}\n\t\t\t * @signal\n\t\t\t */\n\t this.gain = this._peaking.gain;\n\t /**\n\t\t\t * The quality of the filter.\n\t\t\t * @type {Positive}\n\t\t\t * @signal\n\t\t\t */\n\t this.Q = this._bandpass.Q;\n\t //the control signal path\n\t this.effectSend.chain(this._inputBoost, this.follower, this._sweepRange);\n\t this._sweepRange.connect(this._bandpass.frequency);\n\t this._sweepRange.connect(this._peaking.frequency);\n\t //the filtered path\n\t this.effectSend.chain(this._bandpass, this._peaking, this.effectReturn);\n\t //set the initial value\n\t this._setSweepRange();\n\t this.sensitivity = options.sensitivity;\n\t this._readOnly([\n\t 'gain',\n\t 'Q'\n\t ]);\n\t };\n\t Tone.extend(Tone.AutoWah, Tone.Effect);\n\t /**\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.AutoWah.defaults = {\n\t 'baseFrequency': 100,\n\t 'octaves': 6,\n\t 'sensitivity': 0,\n\t 'Q': 2,\n\t 'gain': 2,\n\t 'follower': {\n\t 'attack': 0.3,\n\t 'release': 0.5\n\t }\n\t };\n\t /**\n\t\t * The number of octaves that the filter will sweep above the \n\t\t * baseFrequency. \n\t\t * @memberOf Tone.AutoWah#\n\t\t * @type {Number}\n\t\t * @name octaves\n\t\t */\n\t Object.defineProperty(Tone.AutoWah.prototype, 'octaves', {\n\t get: function () {\n\t return this._octaves;\n\t },\n\t set: function (octaves) {\n\t this._octaves = octaves;\n\t this._setSweepRange();\n\t }\n\t });\n\t /**\n\t\t * The base frequency from which the sweep will start from.\n\t\t * @memberOf Tone.AutoWah#\n\t\t * @type {Frequency}\n\t\t * @name baseFrequency\n\t\t */\n\t Object.defineProperty(Tone.AutoWah.prototype, 'baseFrequency', {\n\t get: function () {\n\t return this._baseFrequency;\n\t },\n\t set: function (baseFreq) {\n\t this._baseFrequency = baseFreq;\n\t this._setSweepRange();\n\t }\n\t });\n\t /**\n\t\t * The sensitivity to control how responsive to the input signal the filter is. \n\t\t * @memberOf Tone.AutoWah#\n\t\t * @type {Decibels}\n\t\t * @name sensitivity\n\t\t */\n\t Object.defineProperty(Tone.AutoWah.prototype, 'sensitivity', {\n\t get: function () {\n\t return this.gainToDb(1 / this._inputBoost.gain.value);\n\t },\n\t set: function (sensitivy) {\n\t this._inputBoost.gain.value = 1 / this.dbToGain(sensitivy);\n\t }\n\t });\n\t /**\n\t\t * sets the sweep range of the scaler\n\t\t * @private\n\t\t */\n\t Tone.AutoWah.prototype._setSweepRange = function () {\n\t this._sweepRange.min = this._baseFrequency;\n\t this._sweepRange.max = Math.min(this._baseFrequency * Math.pow(2, this._octaves), this.context.sampleRate / 2);\n\t };\n\t /**\n\t\t * Clean up.\n\t\t * @returns {Tone.AutoWah} this\n\t\t */\n\t Tone.AutoWah.prototype.dispose = function () {\n\t Tone.Effect.prototype.dispose.call(this);\n\t this.follower.dispose();\n\t this.follower = null;\n\t this._sweepRange.dispose();\n\t this._sweepRange = null;\n\t this._bandpass.dispose();\n\t this._bandpass = null;\n\t this._peaking.dispose();\n\t this._peaking = null;\n\t this._inputBoost.dispose();\n\t this._inputBoost = null;\n\t this._writable([\n\t 'gain',\n\t 'Q'\n\t ]);\n\t this.gain = null;\n\t this.Q = null;\n\t return this;\n\t };\n\t return Tone.AutoWah;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Bitcrusher downsamples the incoming signal to a different bitdepth. \n\t\t * Lowering the bitdepth of the signal creates distortion. Read more about Bitcrushing\n\t\t * on [Wikipedia](https://en.wikipedia.org/wiki/Bitcrusher).\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.Effect}\n\t\t * @param {Number} bits The number of bits to downsample the signal. Nominal range\n\t\t * of 1 to 8. \n\t\t * @example\n\t\t * //initialize crusher and route a synth through it\n\t\t * var crusher = new Tone.BitCrusher(4).toMaster();\n\t\t * var synth = new Tone.MonoSynth().connect(crusher);\n\t\t */\n\t Tone.BitCrusher = function () {\n\t var options = this.optionsObject(arguments, ['bits'], Tone.BitCrusher.defaults);\n\t Tone.Effect.call(this, options);\n\t var invStepSize = 1 / Math.pow(2, options.bits - 1);\n\t /**\n\t\t\t * Subtract the input signal and the modulus of the input signal\n\t\t\t * @type {Tone.Subtract}\n\t\t\t * @private\n\t\t\t */\n\t this._subtract = new Tone.Subtract();\n\t /**\n\t\t\t * The mod function\n\t\t\t * @type {Tone.Modulo}\n\t\t\t * @private\n\t\t\t */\n\t this._modulo = new Tone.Modulo(invStepSize);\n\t /**\n\t\t\t * keeps track of the bits\n\t\t\t * @type {number}\n\t\t\t * @private\n\t\t\t */\n\t this._bits = options.bits;\n\t //connect it up\n\t this.effectSend.fan(this._subtract, this._modulo);\n\t this._modulo.connect(this._subtract, 0, 1);\n\t this._subtract.connect(this.effectReturn);\n\t };\n\t Tone.extend(Tone.BitCrusher, Tone.Effect);\n\t /**\n\t\t * the default values\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.BitCrusher.defaults = { 'bits': 4 };\n\t /**\n\t\t * The bit depth of the effect. Nominal range of 1-8. \n\t\t * @memberOf Tone.BitCrusher#\n\t\t * @type {number}\n\t\t * @name bits\n\t\t */\n\t Object.defineProperty(Tone.BitCrusher.prototype, 'bits', {\n\t get: function () {\n\t return this._bits;\n\t },\n\t set: function (bits) {\n\t this._bits = bits;\n\t var invStepSize = 1 / Math.pow(2, bits - 1);\n\t this._modulo.value = invStepSize;\n\t }\n\t });\n\t /**\n\t\t * Clean up. \n\t\t * @returns {Tone.BitCrusher} this\n\t\t */\n\t Tone.BitCrusher.prototype.dispose = function () {\n\t Tone.Effect.prototype.dispose.call(this);\n\t this._subtract.dispose();\n\t this._subtract = null;\n\t this._modulo.dispose();\n\t this._modulo = null;\n\t return this;\n\t };\n\t return Tone.BitCrusher;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.ChebyShev is a Chebyshev waveshaper, an effect which is good \n\t\t * for making different types of distortion sounds.\n\t\t * Note that odd orders sound very different from even ones, \n\t\t * and order = 1 is no change. \n\t\t * Read more at [music.columbia.edu](http://music.columbia.edu/cmc/musicandcomputers/chapter4/04_06.php).\n\t\t *\n\t\t * @extends {Tone.Effect}\n\t\t * @constructor\n\t\t * @param {Positive|Object} [order] The order of the chebyshev polynomial. Normal range between 1-100. \n\t\t * @example\n\t\t * //create a new cheby\n\t\t * var cheby = new Tone.Chebyshev(50);\n\t\t * //create a monosynth connected to our cheby\n\t\t * synth = new Tone.MonoSynth().connect(cheby);\n\t\t */\n\t Tone.Chebyshev = function () {\n\t var options = this.optionsObject(arguments, ['order'], Tone.Chebyshev.defaults);\n\t Tone.Effect.call(this, options);\n\t /**\n\t\t\t * @type {WaveShaperNode}\n\t\t\t * @private\n\t\t\t */\n\t this._shaper = new Tone.WaveShaper(4096);\n\t /**\n\t\t\t * holds onto the order of the filter\n\t\t\t * @type {number}\n\t\t\t * @private\n\t\t\t */\n\t this._order = options.order;\n\t this.connectEffect(this._shaper);\n\t this.order = options.order;\n\t this.oversample = options.oversample;\n\t };\n\t Tone.extend(Tone.Chebyshev, Tone.Effect);\n\t /**\n\t\t * @static\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.Chebyshev.defaults = {\n\t 'order': 1,\n\t 'oversample': 'none'\n\t };\n\t /**\n\t\t * get the coefficient for that degree\n\t\t * @param {number} x the x value\n\t\t * @param {number} degree \n\t\t * @param {Object} memo memoize the computed value. \n\t\t * this speeds up computation greatly. \n\t\t * @return {number} the coefficient \n\t\t * @private\n\t\t */\n\t Tone.Chebyshev.prototype._getCoefficient = function (x, degree, memo) {\n\t if (memo.hasOwnProperty(degree)) {\n\t return memo[degree];\n\t } else if (degree === 0) {\n\t memo[degree] = 0;\n\t } else if (degree === 1) {\n\t memo[degree] = x;\n\t } else {\n\t memo[degree] = 2 * x * this._getCoefficient(x, degree - 1, memo) - this._getCoefficient(x, degree - 2, memo);\n\t }\n\t return memo[degree];\n\t };\n\t /**\n\t\t * The order of the Chebyshev polynomial which creates\n\t\t * the equation which is applied to the incoming \n\t\t * signal through a Tone.WaveShaper. The equations\n\t\t * are in the form:<br>\n\t\t * order 2: 2x^2 + 1<br>\n\t\t * order 3: 4x^3 + 3x <br>\n\t\t * @memberOf Tone.Chebyshev#\n\t\t * @type {Positive}\n\t\t * @name order\n\t\t */\n\t Object.defineProperty(Tone.Chebyshev.prototype, 'order', {\n\t get: function () {\n\t return this._order;\n\t },\n\t set: function (order) {\n\t this._order = order;\n\t var curve = new Array(4096);\n\t var len = curve.length;\n\t for (var i = 0; i < len; ++i) {\n\t var x = i * 2 / len - 1;\n\t if (x === 0) {\n\t //should output 0 when input is 0\n\t curve[i] = 0;\n\t } else {\n\t curve[i] = this._getCoefficient(x, order, {});\n\t }\n\t }\n\t this._shaper.curve = curve;\n\t }\n\t });\n\t /**\n\t\t * The oversampling of the effect. Can either be \"none\", \"2x\" or \"4x\".\n\t\t * @memberOf Tone.Chebyshev#\n\t\t * @type {string}\n\t\t * @name oversample\n\t\t */\n\t Object.defineProperty(Tone.Chebyshev.prototype, 'oversample', {\n\t get: function () {\n\t return this._shaper.oversample;\n\t },\n\t set: function (oversampling) {\n\t this._shaper.oversample = oversampling;\n\t }\n\t });\n\t /**\n\t\t * Clean up. \n\t\t * @returns {Tone.Chebyshev} this\n\t\t */\n\t Tone.Chebyshev.prototype.dispose = function () {\n\t Tone.Effect.prototype.dispose.call(this);\n\t this._shaper.dispose();\n\t this._shaper = null;\n\t return this;\n\t };\n\t return Tone.Chebyshev;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Base class for Stereo effects. Provides effectSendL/R and effectReturnL/R. \n\t\t *\n\t\t *\t@constructor\n\t\t *\t@extends {Tone.Effect}\n\t\t */\n\t Tone.StereoEffect = function () {\n\t this.createInsOuts(1, 1);\n\t //get the defaults\n\t var options = this.optionsObject(arguments, ['wet'], Tone.Effect.defaults);\n\t /**\n\t\t\t * the drywet knob to control the amount of effect\n\t\t\t * @type {Tone.CrossFade}\n\t\t\t * @private\n\t\t\t */\n\t this._dryWet = new Tone.CrossFade(options.wet);\n\t /**\n\t\t\t * The wet control, i.e. how much of the effected\n\t\t\t * will pass through to the output. \n\t\t\t * @type {NormalRange}\n\t\t\t * @signal\n\t\t\t */\n\t this.wet = this._dryWet.fade;\n\t /**\n\t\t\t * then split it\n\t\t\t * @type {Tone.Split}\n\t\t\t * @private\n\t\t\t */\n\t this._split = new Tone.Split();\n\t /**\n\t\t\t * the effects send LEFT\n\t\t\t * @type {GainNode}\n\t\t\t * @private\n\t\t\t */\n\t this.effectSendL = this._split.left;\n\t /**\n\t\t\t * the effects send RIGHT\n\t\t\t * @type {GainNode}\n\t\t\t * @private\n\t\t\t */\n\t this.effectSendR = this._split.right;\n\t /**\n\t\t\t * the stereo effect merger\n\t\t\t * @type {Tone.Merge}\n\t\t\t * @private\n\t\t\t */\n\t this._merge = new Tone.Merge();\n\t /**\n\t\t\t * the effect return LEFT\n\t\t\t * @type {GainNode}\n\t\t\t * @private\n\t\t\t */\n\t this.effectReturnL = this._merge.left;\n\t /**\n\t\t\t * the effect return RIGHT\n\t\t\t * @type {GainNode}\n\t\t\t * @private\n\t\t\t */\n\t this.effectReturnR = this._merge.right;\n\t //connections\n\t this.input.connect(this._split);\n\t //dry wet connections\n\t this.input.connect(this._dryWet, 0, 0);\n\t this._merge.connect(this._dryWet, 0, 1);\n\t this._dryWet.connect(this.output);\n\t this._readOnly(['wet']);\n\t };\n\t Tone.extend(Tone.StereoEffect, Tone.Effect);\n\t /**\n\t\t * Clean up. \n\t\t * @returns {Tone.StereoEffect} this\n\t\t */\n\t Tone.StereoEffect.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._dryWet.dispose();\n\t this._dryWet = null;\n\t this._split.dispose();\n\t this._split = null;\n\t this._merge.dispose();\n\t this._merge = null;\n\t this.effectSendL = null;\n\t this.effectSendR = null;\n\t this.effectReturnL = null;\n\t this.effectReturnR = null;\n\t this._writable(['wet']);\n\t this.wet = null;\n\t return this;\n\t };\n\t return Tone.StereoEffect;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * \t@class Tone.FeedbackEffect provides a loop between an \n\t\t * \t audio source and its own output. This is a base-class\n\t\t * \t for feedback effects. \n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.Effect}\n\t\t * @param {NormalRange|Object} [feedback] The initial feedback value.\n\t\t */\n\t Tone.FeedbackEffect = function () {\n\t var options = this.optionsObject(arguments, ['feedback']);\n\t options = this.defaultArg(options, Tone.FeedbackEffect.defaults);\n\t Tone.Effect.call(this, options);\n\t /**\n\t\t\t * the gain which controls the feedback\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this._feedbackGain = new Tone.Gain(options.feedback, Tone.Type.NormalRange);\n\t /**\n\t\t\t * The amount of signal which is fed back into the effect input. \n\t\t\t * @type {NormalRange}\n\t\t\t * @signal\n\t\t\t */\n\t this.feedback = this._feedbackGain.gain;\n\t //the feedback loop\n\t this.effectReturn.chain(this._feedbackGain, this.effectSend);\n\t this._readOnly(['feedback']);\n\t };\n\t Tone.extend(Tone.FeedbackEffect, Tone.Effect);\n\t /**\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.FeedbackEffect.defaults = { 'feedback': 0.125 };\n\t /**\n\t\t * Clean up. \n\t\t * @returns {Tone.FeedbackEffect} this\n\t\t */\n\t Tone.FeedbackEffect.prototype.dispose = function () {\n\t Tone.Effect.prototype.dispose.call(this);\n\t this._writable(['feedback']);\n\t this._feedbackGain.dispose();\n\t this._feedbackGain = null;\n\t this.feedback = null;\n\t return this;\n\t };\n\t return Tone.FeedbackEffect;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Just like a stereo feedback effect, but the feedback is routed from left to right\n\t\t * and right to left instead of on the same channel.\n\t\t *\n\t\t *\t@constructor\n\t\t *\t@extends {Tone.FeedbackEffect}\n\t\t */\n\t Tone.StereoXFeedbackEffect = function () {\n\t var options = this.optionsObject(arguments, ['feedback'], Tone.FeedbackEffect.defaults);\n\t Tone.StereoEffect.call(this, options);\n\t /**\n\t\t\t * The amount of feedback from the output\n\t\t\t * back into the input of the effect (routed\n\t\t\t * across left and right channels).\n\t\t\t * @type {NormalRange}\n\t\t\t * @signal\n\t\t\t */\n\t this.feedback = new Tone.Signal(options.feedback, Tone.Type.NormalRange);\n\t /**\n\t\t\t * the left side feeback\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this._feedbackLR = new Tone.Gain();\n\t /**\n\t\t\t * the right side feeback\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this._feedbackRL = new Tone.Gain();\n\t //connect it up\n\t this.effectReturnL.chain(this._feedbackLR, this.effectSendR);\n\t this.effectReturnR.chain(this._feedbackRL, this.effectSendL);\n\t this.feedback.fan(this._feedbackLR.gain, this._feedbackRL.gain);\n\t this._readOnly(['feedback']);\n\t };\n\t Tone.extend(Tone.StereoXFeedbackEffect, Tone.FeedbackEffect);\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.StereoXFeedbackEffect} this\n\t\t */\n\t Tone.StereoXFeedbackEffect.prototype.dispose = function () {\n\t Tone.StereoEffect.prototype.dispose.call(this);\n\t this._writable(['feedback']);\n\t this.feedback.dispose();\n\t this.feedback = null;\n\t this._feedbackLR.dispose();\n\t this._feedbackLR = null;\n\t this._feedbackRL.dispose();\n\t this._feedbackRL = null;\n\t return this;\n\t };\n\t return Tone.StereoXFeedbackEffect;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Chorus is a stereo chorus effect with feedback composed of \n\t\t * a left and right delay with a Tone.LFO applied to the delayTime of each channel. \n\t\t * Inspiration from [Tuna.js](https://github.com/Dinahmoe/tuna/blob/master/tuna.js).\n\t\t * Read more on the chorus effect on [SoundOnSound](http://www.soundonsound.com/sos/jun04/articles/synthsecrets.htm).\n\t\t *\n\t\t *\t@constructor\n\t\t *\t@extends {Tone.StereoXFeedbackEffect}\n\t\t *\t@param {Frequency|Object} [frequency] The frequency of the LFO.\n\t\t *\t@param {Milliseconds} [delayTime] The delay of the chorus effect in ms. \n\t\t *\t@param {NormalRange} [depth] The depth of the chorus.\n\t\t *\t@example\n\t\t * var chorus = new Tone.Chorus(4, 2.5, 0.5);\n\t\t * var synth = new Tone.PolySynth(4, Tone.MonoSynth).connect(chorus);\n\t\t * synth.triggerAttackRelease([\"C3\",\"E3\",\"G3\"], \"8n\");\n\t\t */\n\t Tone.Chorus = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'frequency',\n\t 'delayTime',\n\t 'depth'\n\t ], Tone.Chorus.defaults);\n\t Tone.StereoXFeedbackEffect.call(this, options);\n\t /**\n\t\t\t * the depth of the chorus\n\t\t\t * @type {number}\n\t\t\t * @private\n\t\t\t */\n\t this._depth = options.depth;\n\t /**\n\t\t\t * the delayTime\n\t\t\t * @type {number}\n\t\t\t * @private\n\t\t\t */\n\t this._delayTime = options.delayTime / 1000;\n\t /**\n\t\t\t * the lfo which controls the delayTime\n\t\t\t * @type {Tone.LFO}\n\t\t\t * @private\n\t\t\t */\n\t this._lfoL = new Tone.LFO({\n\t 'frequency': options.frequency,\n\t 'min': 0,\n\t 'max': 1\n\t });\n\t /**\n\t\t\t * another LFO for the right side with a 180 degree phase diff\n\t\t\t * @type {Tone.LFO}\n\t\t\t * @private\n\t\t\t */\n\t this._lfoR = new Tone.LFO({\n\t 'frequency': options.frequency,\n\t 'min': 0,\n\t 'max': 1,\n\t 'phase': 180\n\t });\n\t /**\n\t\t\t * delay for left\n\t\t\t * @type {Tone.Delay}\n\t\t\t * @private\n\t\t\t */\n\t this._delayNodeL = new Tone.Delay();\n\t /**\n\t\t\t * delay for right\n\t\t\t * @type {Tone.Delay}\n\t\t\t * @private\n\t\t\t */\n\t this._delayNodeR = new Tone.Delay();\n\t /**\n\t\t\t * The frequency of the LFO which modulates the delayTime. \n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.frequency = this._lfoL.frequency;\n\t //connections\n\t this.effectSendL.chain(this._delayNodeL, this.effectReturnL);\n\t this.effectSendR.chain(this._delayNodeR, this.effectReturnR);\n\t //and pass through to make the detune apparent\n\t this.effectSendL.connect(this.effectReturnL);\n\t this.effectSendR.connect(this.effectReturnR);\n\t //lfo setup\n\t this._lfoL.connect(this._delayNodeL.delayTime);\n\t this._lfoR.connect(this._delayNodeR.delayTime);\n\t //start the lfo\n\t this._lfoL.start();\n\t this._lfoR.start();\n\t //have one LFO frequency control the other\n\t this._lfoL.frequency.connect(this._lfoR.frequency);\n\t //set the initial values\n\t this.depth = this._depth;\n\t this.frequency.value = options.frequency;\n\t this.type = options.type;\n\t this._readOnly(['frequency']);\n\t this.spread = options.spread;\n\t };\n\t Tone.extend(Tone.Chorus, Tone.StereoXFeedbackEffect);\n\t /**\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.Chorus.defaults = {\n\t 'frequency': 1.5,\n\t 'delayTime': 3.5,\n\t 'depth': 0.7,\n\t 'feedback': 0.1,\n\t 'type': 'sine',\n\t 'spread': 180\n\t };\n\t /**\n\t\t * The depth of the effect. A depth of 1 makes the delayTime\n\t\t * modulate between 0 and 2*delayTime (centered around the delayTime). \n\t\t * @memberOf Tone.Chorus#\n\t\t * @type {NormalRange}\n\t\t * @name depth\n\t\t */\n\t Object.defineProperty(Tone.Chorus.prototype, 'depth', {\n\t get: function () {\n\t return this._depth;\n\t },\n\t set: function (depth) {\n\t this._depth = depth;\n\t var deviation = this._delayTime * depth;\n\t this._lfoL.min = Math.max(this._delayTime - deviation, 0);\n\t this._lfoL.max = this._delayTime + deviation;\n\t this._lfoR.min = Math.max(this._delayTime - deviation, 0);\n\t this._lfoR.max = this._delayTime + deviation;\n\t }\n\t });\n\t /**\n\t\t * The delayTime in milliseconds of the chorus. A larger delayTime\n\t\t * will give a more pronounced effect. Nominal range a delayTime\n\t\t * is between 2 and 20ms. \n\t\t * @memberOf Tone.Chorus#\n\t\t * @type {Milliseconds}\n\t\t * @name delayTime\n\t\t */\n\t Object.defineProperty(Tone.Chorus.prototype, 'delayTime', {\n\t get: function () {\n\t return this._delayTime * 1000;\n\t },\n\t set: function (delayTime) {\n\t this._delayTime = delayTime / 1000;\n\t this.depth = this._depth;\n\t }\n\t });\n\t /**\n\t\t * The oscillator type of the LFO. \n\t\t * @memberOf Tone.Chorus#\n\t\t * @type {string}\n\t\t * @name type\n\t\t */\n\t Object.defineProperty(Tone.Chorus.prototype, 'type', {\n\t get: function () {\n\t return this._lfoL.type;\n\t },\n\t set: function (type) {\n\t this._lfoL.type = type;\n\t this._lfoR.type = type;\n\t }\n\t });\n\t /** \n\t\t * Amount of stereo spread. When set to 0, both LFO's will be panned centrally.\n\t\t * When set to 180, LFO's will be panned hard left and right respectively.\n\t\t * @memberOf Tone.Chorus#\n\t\t * @type {Degrees}\n\t\t * @name spread\n\t\t */\n\t Object.defineProperty(Tone.Chorus.prototype, 'spread', {\n\t get: function () {\n\t return this._lfoR.phase - this._lfoL.phase; //180\n\t },\n\t set: function (spread) {\n\t this._lfoL.phase = 90 - spread / 2;\n\t this._lfoR.phase = spread / 2 + 90;\n\t }\n\t });\n\t /**\n\t\t * Clean up. \n\t\t * @returns {Tone.Chorus} this\n\t\t */\n\t Tone.Chorus.prototype.dispose = function () {\n\t Tone.StereoXFeedbackEffect.prototype.dispose.call(this);\n\t this._lfoL.dispose();\n\t this._lfoL = null;\n\t this._lfoR.dispose();\n\t this._lfoR = null;\n\t this._delayNodeL.dispose();\n\t this._delayNodeL = null;\n\t this._delayNodeR.dispose();\n\t this._delayNodeR = null;\n\t this._writable('frequency');\n\t this.frequency = null;\n\t return this;\n\t };\n\t return Tone.Chorus;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Convolver is a wrapper around the Native Web Audio \n\t\t * [ConvolverNode](http://webaudio.github.io/web-audio-api/#the-convolvernode-interface).\n\t\t * Convolution is useful for reverb and filter emulation. Read more about convolution reverb on\n\t\t * [Wikipedia](https://en.wikipedia.org/wiki/Convolution_reverb).\n\t\t * \n\t\t * @constructor\n\t\t * @extends {Tone.Effect}\n\t\t * @param {string|Tone.Buffer|Object} [url] The URL of the impulse response or the Tone.Buffer\n\t\t * contianing the impulse response. \n\t\t * @param {Function} onload The callback to invoke when the url is loaded.\n\t\t * @example\n\t\t * //initializing the convolver with an impulse response\n\t\t * var convolver = new Tone.Convolver(\"./path/to/ir.wav\").toMaster();\n\t\t */\n\t Tone.Convolver = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'url',\n\t 'onload'\n\t ], Tone.Convolver.defaults);\n\t Tone.Effect.call(this, options);\n\t /**\n\t\t\t * convolver node\n\t\t\t * @type {ConvolverNode}\n\t\t\t * @private\n\t\t\t */\n\t this._convolver = this.context.createConvolver();\n\t /**\n\t\t\t * the convolution buffer\n\t\t\t * @type {Tone.Buffer}\n\t\t\t * @private\n\t\t\t */\n\t this._buffer = new Tone.Buffer();\n\t if (this.isString(options.url)) {\n\t this._buffer.load(options.url, function (buffer) {\n\t this.buffer = buffer;\n\t options.onload();\n\t }.bind(this));\n\t } else if (options.url) {\n\t this.buffer = options.url;\n\t options.onload();\n\t }\n\t this.connectEffect(this._convolver);\n\t };\n\t Tone.extend(Tone.Convolver, Tone.Effect);\n\t /**\n\t\t * @static\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.Convolver.defaults = { 'onload': Tone.noOp };\n\t /**\n\t\t * The convolver's buffer\n\t\t * @memberOf Tone.Convolver#\n\t\t * @type {AudioBuffer}\n\t\t * @name buffer\n\t\t */\n\t Object.defineProperty(Tone.Convolver.prototype, 'buffer', {\n\t get: function () {\n\t return this._buffer.get();\n\t },\n\t set: function (buffer) {\n\t this._buffer.set(buffer);\n\t this._convolver.buffer = this._buffer.get();\n\t }\n\t });\n\t /**\n\t\t * Load an impulse response url as an audio buffer.\n\t\t * Decodes the audio asynchronously and invokes\n\t\t * the callback once the audio buffer loads.\n\t\t * @param {string} url The url of the buffer to load.\n\t\t * filetype support depends on the\n\t\t * browser.\n\t\t * @param {function=} callback\n\t\t * @returns {Promise}\n\t\t */\n\t Tone.Convolver.prototype.load = function (url, callback) {\n\t return this._buffer.load(url, function (buff) {\n\t this.buffer = buff;\n\t if (callback) {\n\t callback();\n\t }\n\t }.bind(this));\n\t };\n\t /**\n\t\t * Clean up. \n\t\t * @returns {Tone.Convolver} this\n\t\t */\n\t Tone.Convolver.prototype.dispose = function () {\n\t Tone.Effect.prototype.dispose.call(this);\n\t this._convolver.disconnect();\n\t this._convolver = null;\n\t this._buffer.dispose();\n\t this._buffer = null;\n\t return this;\n\t };\n\t return Tone.Convolver;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Distortion is a simple distortion effect using Tone.WaveShaper.\n\t\t * Algorithm from [a stackoverflow answer](http://stackoverflow.com/a/22313408).\n\t\t *\n\t\t * @extends {Tone.Effect}\n\t\t * @constructor\n\t\t * @param {Number|Object} [distortion] The amount of distortion (nominal range of 0-1)\n\t\t * @example\n\t\t * var dist = new Tone.Distortion(0.8).toMaster();\n\t\t * var fm = new Tone.SimpleFM().connect(dist);\n\t\t * //this sounds good on bass notes\n\t\t * fm.triggerAttackRelease(\"A1\", \"8n\");\n\t\t */\n\t Tone.Distortion = function () {\n\t var options = this.optionsObject(arguments, ['distortion'], Tone.Distortion.defaults);\n\t Tone.Effect.call(this, options);\n\t /**\n\t\t\t * @type {Tone.WaveShaper}\n\t\t\t * @private\n\t\t\t */\n\t this._shaper = new Tone.WaveShaper(4096);\n\t /**\n\t\t\t * holds the distortion amount\n\t\t\t * @type {number}\n\t\t\t * @private\n\t\t\t */\n\t this._distortion = options.distortion;\n\t this.connectEffect(this._shaper);\n\t this.distortion = options.distortion;\n\t this.oversample = options.oversample;\n\t };\n\t Tone.extend(Tone.Distortion, Tone.Effect);\n\t /**\n\t\t * @static\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.Distortion.defaults = {\n\t 'distortion': 0.4,\n\t 'oversample': 'none'\n\t };\n\t /**\n\t\t * The amount of distortion.\n\t\t * @memberOf Tone.Distortion#\n\t\t * @type {NormalRange}\n\t\t * @name distortion\n\t\t */\n\t Object.defineProperty(Tone.Distortion.prototype, 'distortion', {\n\t get: function () {\n\t return this._distortion;\n\t },\n\t set: function (amount) {\n\t this._distortion = amount;\n\t var k = amount * 100;\n\t var deg = Math.PI / 180;\n\t this._shaper.setMap(function (x) {\n\t if (Math.abs(x) < 0.001) {\n\t //should output 0 when input is 0\n\t return 0;\n\t } else {\n\t return (3 + k) * x * 20 * deg / (Math.PI + k * Math.abs(x));\n\t }\n\t });\n\t }\n\t });\n\t /**\n\t\t * The oversampling of the effect. Can either be \"none\", \"2x\" or \"4x\".\n\t\t * @memberOf Tone.Distortion#\n\t\t * @type {string}\n\t\t * @name oversample\n\t\t */\n\t Object.defineProperty(Tone.Distortion.prototype, 'oversample', {\n\t get: function () {\n\t return this._shaper.oversample;\n\t },\n\t set: function (oversampling) {\n\t this._shaper.oversample = oversampling;\n\t }\n\t });\n\t /**\n\t\t * Clean up. \n\t\t * @returns {Tone.Distortion} this\n\t\t */\n\t Tone.Distortion.prototype.dispose = function () {\n\t Tone.Effect.prototype.dispose.call(this);\n\t this._shaper.dispose();\n\t this._shaper = null;\n\t return this;\n\t };\n\t return Tone.Distortion;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.FeedbackDelay is a DelayNode in which part of output\n\t\t * signal is fed back into the delay. \n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.FeedbackEffect}\n\t\t * @param {Time|Object} [delayTime] The delay applied to the incoming signal. \n\t\t * @param {NormalRange=} feedback The amount of the effected signal which \n\t\t * is fed back through the delay.\n\t\t * @example\n\t\t * var feedbackDelay = new Tone.FeedbackDelay(\"8n\", 0.5).toMaster();\n\t\t * var tom = new Tone.DrumSynth({\n\t\t * \t\"octaves\" : 4,\n\t\t * \t\"pitchDecay\" : 0.1\n\t\t * }).connect(feedbackDelay);\n\t\t * tom.triggerAttackRelease(\"A2\",\"32n\");\n\t\t */\n\t Tone.FeedbackDelay = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'delayTime',\n\t 'feedback'\n\t ], Tone.FeedbackDelay.defaults);\n\t Tone.FeedbackEffect.call(this, options);\n\t /**\n\t\t\t * the delay node\n\t\t\t * @type {Tone.Delay}\n\t\t\t * @private\n\t\t\t */\n\t this._delayNode = new Tone.Delay(options.delayTime);\n\t /**\n\t\t\t * The delayTime of the DelayNode. \n\t\t\t * @type {Time}\n\t\t\t * @signal\n\t\t\t */\n\t this.delayTime = this._delayNode.delayTime;\n\t // connect it up\n\t this.connectEffect(this._delayNode);\n\t this._readOnly(['delayTime']);\n\t };\n\t Tone.extend(Tone.FeedbackDelay, Tone.FeedbackEffect);\n\t /**\n\t\t * The default values. \n\t\t * @const\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.FeedbackDelay.defaults = { 'delayTime': 0.25 };\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.FeedbackDelay} this\n\t\t */\n\t Tone.FeedbackDelay.prototype.dispose = function () {\n\t Tone.FeedbackEffect.prototype.dispose.call(this);\n\t this._delayNode.dispose();\n\t this._delayNode = null;\n\t this._writable(['delayTime']);\n\t this.delayTime = null;\n\t return this;\n\t };\n\t return Tone.FeedbackDelay;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * an array of comb filter delay values from Freeverb implementation\n\t\t * @static\n\t\t * @private\n\t\t * @type {Array}\n\t\t */\n\t var combFilterTunings = [\n\t 1557 / 44100,\n\t 1617 / 44100,\n\t 1491 / 44100,\n\t 1422 / 44100,\n\t 1277 / 44100,\n\t 1356 / 44100,\n\t 1188 / 44100,\n\t 1116 / 44100\n\t ];\n\t /**\n\t\t * an array of allpass filter frequency values from Freeverb implementation\n\t\t * @private\n\t\t * @static\n\t\t * @type {Array}\n\t\t */\n\t var allpassFilterFrequencies = [\n\t 225,\n\t 556,\n\t 441,\n\t 341\n\t ];\n\t /**\n\t\t * @class Tone.Freeverb is a reverb based on [Freeverb](https://ccrma.stanford.edu/~jos/pasp/Freeverb.html).\n\t\t * Read more on reverb on [SoundOnSound](http://www.soundonsound.com/sos/may00/articles/reverb.htm).\n\t\t *\n\t\t * @extends {Tone.Effect}\n\t\t * @constructor\n\t\t * @param {NormalRange|Object} [roomSize] Correlated to the decay time. \n\t\t * @param {Frequency} [dampening] The cutoff frequency of a lowpass filter as part \n\t\t * of the reverb. \n\t\t * @example\n\t\t * var freeverb = new Tone.Freeverb().toMaster();\n\t\t * freeverb.dampening.value = 1000;\n\t\t * //routing synth through the reverb\n\t\t * var synth = new Tone.AMSynth().connect(freeverb);\n\t\t */\n\t Tone.Freeverb = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'roomSize',\n\t 'dampening'\n\t ], Tone.Freeverb.defaults);\n\t Tone.StereoEffect.call(this, options);\n\t /**\n\t\t\t * The roomSize value between. A larger roomSize\n\t\t\t * will result in a longer decay. \n\t\t\t * @type {NormalRange}\n\t\t\t * @signal\n\t\t\t */\n\t this.roomSize = new Tone.Signal(options.roomSize, Tone.Type.NormalRange);\n\t /**\n\t\t\t * The amount of dampening of the reverberant signal. \n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.dampening = new Tone.Signal(options.dampening, Tone.Type.Frequency);\n\t /**\n\t\t\t * the comb filters\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._combFilters = [];\n\t /**\n\t\t\t * the allpass filters on the left\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._allpassFiltersL = [];\n\t /**\n\t\t\t * the allpass filters on the right\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._allpassFiltersR = [];\n\t //make the allpass filters on the right\n\t for (var l = 0; l < allpassFilterFrequencies.length; l++) {\n\t var allpassL = this.context.createBiquadFilter();\n\t allpassL.type = 'allpass';\n\t allpassL.frequency.value = allpassFilterFrequencies[l];\n\t this._allpassFiltersL.push(allpassL);\n\t }\n\t //make the allpass filters on the left\n\t for (var r = 0; r < allpassFilterFrequencies.length; r++) {\n\t var allpassR = this.context.createBiquadFilter();\n\t allpassR.type = 'allpass';\n\t allpassR.frequency.value = allpassFilterFrequencies[r];\n\t this._allpassFiltersR.push(allpassR);\n\t }\n\t //make the comb filters\n\t for (var c = 0; c < combFilterTunings.length; c++) {\n\t var lfpf = new Tone.LowpassCombFilter(combFilterTunings[c]);\n\t if (c < combFilterTunings.length / 2) {\n\t this.effectSendL.chain(lfpf, this._allpassFiltersL[0]);\n\t } else {\n\t this.effectSendR.chain(lfpf, this._allpassFiltersR[0]);\n\t }\n\t this.roomSize.connect(lfpf.resonance);\n\t this.dampening.connect(lfpf.dampening);\n\t this._combFilters.push(lfpf);\n\t }\n\t //chain the allpass filters togetehr\n\t this.connectSeries.apply(this, this._allpassFiltersL);\n\t this.connectSeries.apply(this, this._allpassFiltersR);\n\t this._allpassFiltersL[this._allpassFiltersL.length - 1].connect(this.effectReturnL);\n\t this._allpassFiltersR[this._allpassFiltersR.length - 1].connect(this.effectReturnR);\n\t this._readOnly([\n\t 'roomSize',\n\t 'dampening'\n\t ]);\n\t };\n\t Tone.extend(Tone.Freeverb, Tone.StereoEffect);\n\t /**\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.Freeverb.defaults = {\n\t 'roomSize': 0.7,\n\t 'dampening': 3000\n\t };\n\t /**\n\t\t * Clean up. \n\t\t * @returns {Tone.Freeverb} this\n\t\t */\n\t Tone.Freeverb.prototype.dispose = function () {\n\t Tone.StereoEffect.prototype.dispose.call(this);\n\t for (var al = 0; al < this._allpassFiltersL.length; al++) {\n\t this._allpassFiltersL[al].disconnect();\n\t this._allpassFiltersL[al] = null;\n\t }\n\t this._allpassFiltersL = null;\n\t for (var ar = 0; ar < this._allpassFiltersR.length; ar++) {\n\t this._allpassFiltersR[ar].disconnect();\n\t this._allpassFiltersR[ar] = null;\n\t }\n\t this._allpassFiltersR = null;\n\t for (var cf = 0; cf < this._combFilters.length; cf++) {\n\t this._combFilters[cf].dispose();\n\t this._combFilters[cf] = null;\n\t }\n\t this._combFilters = null;\n\t this._writable([\n\t 'roomSize',\n\t 'dampening'\n\t ]);\n\t this.roomSize.dispose();\n\t this.roomSize = null;\n\t this.dampening.dispose();\n\t this.dampening = null;\n\t return this;\n\t };\n\t return Tone.Freeverb;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * an array of the comb filter delay time values\n\t\t * @private\n\t\t * @static\n\t\t * @type {Array}\n\t\t */\n\t var combFilterDelayTimes = [\n\t 1687 / 25000,\n\t 1601 / 25000,\n\t 2053 / 25000,\n\t 2251 / 25000\n\t ];\n\t /**\n\t\t * the resonances of each of the comb filters\n\t\t * @private\n\t\t * @static\n\t\t * @type {Array}\n\t\t */\n\t var combFilterResonances = [\n\t 0.773,\n\t 0.802,\n\t 0.753,\n\t 0.733\n\t ];\n\t /**\n\t\t * the allpass filter frequencies\n\t\t * @private\n\t\t * @static\n\t\t * @type {Array}\n\t\t */\n\t var allpassFilterFreqs = [\n\t 347,\n\t 113,\n\t 37\n\t ];\n\t /**\n\t\t * @class Tone.JCReverb is a simple [Schroeder Reverberator](https://ccrma.stanford.edu/~jos/pasp/Schroeder_Reverberators.html)\n\t\t * tuned by John Chowning in 1970.\n\t\t * It is made up of three allpass filters and four Tone.FeedbackCombFilter. \n\t\t * \n\t\t *\n\t\t * @extends {Tone.Effect}\n\t\t * @constructor\n\t\t * @param {NormalRange|Object} [roomSize] Coorelates to the decay time.\n\t\t * @example\n\t\t * var reverb = new Tone.JCReverb(0.4).connect(Tone.Master);\n\t\t * var delay = new Tone.FeedbackDelay(0.5); \n\t\t * //connecting the synth to reverb through delay\n\t\t * var synth = new Tone.DuoSynth().chain(delay, reverb);\n\t\t * synth.triggerAttackRelease(\"A4\",\"8n\");\n\t\t */\n\t Tone.JCReverb = function () {\n\t var options = this.optionsObject(arguments, ['roomSize'], Tone.JCReverb.defaults);\n\t Tone.StereoEffect.call(this, options);\n\t /**\n\t\t\t * room size control values between [0,1]\n\t\t\t * @type {NormalRange}\n\t\t\t * @signal\n\t\t\t */\n\t this.roomSize = new Tone.Signal(options.roomSize, Tone.Type.NormalRange);\n\t /**\n\t\t\t * scale the room size\n\t\t\t * @type {Tone.Scale}\n\t\t\t * @private\n\t\t\t */\n\t this._scaleRoomSize = new Tone.Scale(-0.733, 0.197);\n\t /**\n\t\t\t * a series of allpass filters\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._allpassFilters = [];\n\t /**\n\t\t\t * parallel feedback comb filters\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._feedbackCombFilters = [];\n\t //make the allpass filters\n\t for (var af = 0; af < allpassFilterFreqs.length; af++) {\n\t var allpass = this.context.createBiquadFilter();\n\t allpass.type = 'allpass';\n\t allpass.frequency.value = allpassFilterFreqs[af];\n\t this._allpassFilters.push(allpass);\n\t }\n\t //and the comb filters\n\t for (var cf = 0; cf < combFilterDelayTimes.length; cf++) {\n\t var fbcf = new Tone.FeedbackCombFilter(combFilterDelayTimes[cf], 0.1);\n\t this._scaleRoomSize.connect(fbcf.resonance);\n\t fbcf.resonance.value = combFilterResonances[cf];\n\t this._allpassFilters[this._allpassFilters.length - 1].connect(fbcf);\n\t if (cf < combFilterDelayTimes.length / 2) {\n\t fbcf.connect(this.effectReturnL);\n\t } else {\n\t fbcf.connect(this.effectReturnR);\n\t }\n\t this._feedbackCombFilters.push(fbcf);\n\t }\n\t //chain the allpass filters together\n\t this.roomSize.connect(this._scaleRoomSize);\n\t this.connectSeries.apply(this, this._allpassFilters);\n\t this.effectSendL.connect(this._allpassFilters[0]);\n\t this.effectSendR.connect(this._allpassFilters[0]);\n\t this._readOnly(['roomSize']);\n\t };\n\t Tone.extend(Tone.JCReverb, Tone.StereoEffect);\n\t /**\n\t\t * the default values\n\t\t * @static\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.JCReverb.defaults = { 'roomSize': 0.5 };\n\t /**\n\t\t * Clean up. \n\t\t * @returns {Tone.JCReverb} this\n\t\t */\n\t Tone.JCReverb.prototype.dispose = function () {\n\t Tone.StereoEffect.prototype.dispose.call(this);\n\t for (var apf = 0; apf < this._allpassFilters.length; apf++) {\n\t this._allpassFilters[apf].disconnect();\n\t this._allpassFilters[apf] = null;\n\t }\n\t this._allpassFilters = null;\n\t for (var fbcf = 0; fbcf < this._feedbackCombFilters.length; fbcf++) {\n\t this._feedbackCombFilters[fbcf].dispose();\n\t this._feedbackCombFilters[fbcf] = null;\n\t }\n\t this._feedbackCombFilters = null;\n\t this._writable(['roomSize']);\n\t this.roomSize.dispose();\n\t this.roomSize = null;\n\t this._scaleRoomSize.dispose();\n\t this._scaleRoomSize = null;\n\t return this;\n\t };\n\t return Tone.JCReverb;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Mid/Side processing separates the the 'mid' signal \n\t\t * (which comes out of both the left and the right channel) \n\t\t * and the 'side' (which only comes out of the the side channels) \n\t\t * and effects them separately before being recombined.\n\t\t * Applies a Mid/Side seperation and recombination.\n\t\t * Algorithm found in [kvraudio forums](http://www.kvraudio.com/forum/viewtopic.php?t=212587).\n\t\t * <br><br>\n\t\t * This is a base-class for Mid/Side Effects. \n\t\t *\n\t\t * @extends {Tone.Effect}\n\t\t * @constructor\n\t\t */\n\t Tone.MidSideEffect = function () {\n\t Tone.Effect.apply(this, arguments);\n\t /**\n\t\t\t * The mid/side split\n\t\t\t * @type {Tone.MidSideSplit}\n\t\t\t * @private\n\t\t\t */\n\t this._midSideSplit = new Tone.MidSideSplit();\n\t /**\n\t\t\t * The mid/side merge\n\t\t\t * @type {Tone.MidSideMerge}\n\t\t\t * @private\n\t\t\t */\n\t this._midSideMerge = new Tone.MidSideMerge();\n\t /**\n\t\t\t * The mid send. Connect to mid processing\n\t\t\t * @type {Tone.Expr}\n\t\t\t * @private\n\t\t\t */\n\t this.midSend = this._midSideSplit.mid;\n\t /**\n\t\t\t * The side send. Connect to side processing\n\t\t\t * @type {Tone.Expr}\n\t\t\t * @private\n\t\t\t */\n\t this.sideSend = this._midSideSplit.side;\n\t /**\n\t\t\t * The mid return connection\n\t\t\t * @type {GainNode}\n\t\t\t * @private\n\t\t\t */\n\t this.midReturn = this._midSideMerge.mid;\n\t /**\n\t\t\t * The side return connection\n\t\t\t * @type {GainNode}\n\t\t\t * @private\n\t\t\t */\n\t this.sideReturn = this._midSideMerge.side;\n\t //the connections\n\t this.effectSend.connect(this._midSideSplit);\n\t this._midSideMerge.connect(this.effectReturn);\n\t };\n\t Tone.extend(Tone.MidSideEffect, Tone.Effect);\n\t /**\n\t\t * Clean up. \n\t\t * @returns {Tone.MidSideEffect} this\n\t\t */\n\t Tone.MidSideEffect.prototype.dispose = function () {\n\t Tone.Effect.prototype.dispose.call(this);\n\t this._midSideSplit.dispose();\n\t this._midSideSplit = null;\n\t this._midSideMerge.dispose();\n\t this._midSideMerge = null;\n\t this.midSend = null;\n\t this.sideSend = null;\n\t this.midReturn = null;\n\t this.sideReturn = null;\n\t return this;\n\t };\n\t return Tone.MidSideEffect;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Phaser is a phaser effect. Phasers work by changing the phase\n\t\t * of different frequency components of an incoming signal. Read more on \n\t\t * [Wikipedia](https://en.wikipedia.org/wiki/Phaser_(effect)). \n\t\t * Inspiration for this phaser comes from [Tuna.js](https://github.com/Dinahmoe/tuna/).\n\t\t *\n\t\t *\t@extends {Tone.StereoEffect}\n\t\t *\t@constructor\n\t\t *\t@param {Frequency|Object} [frequency] The speed of the phasing. \n\t\t *\t@param {number} [octaves] The octaves of the effect. \n\t\t *\t@param {Frequency} [baseFrequency] The base frequency of the filters. \n\t\t *\t@example\n\t\t * var phaser = new Tone.Phaser({\n\t\t * \t\"frequency\" : 15, \n\t\t * \t\"octaves\" : 5, \n\t\t * \t\"baseFrequency\" : 1000\n\t\t * }).toMaster();\n\t\t * var synth = new Tone.FMSynth().connect(phaser);\n\t\t * synth.triggerAttackRelease(\"E3\", \"2n\");\n\t\t */\n\t Tone.Phaser = function () {\n\t //set the defaults\n\t var options = this.optionsObject(arguments, [\n\t 'frequency',\n\t 'octaves',\n\t 'baseFrequency'\n\t ], Tone.Phaser.defaults);\n\t Tone.StereoEffect.call(this, options);\n\t /**\n\t\t\t * the lfo which controls the frequency on the left side\n\t\t\t * @type {Tone.LFO}\n\t\t\t * @private\n\t\t\t */\n\t this._lfoL = new Tone.LFO(options.frequency, 0, 1);\n\t /**\n\t\t\t * the lfo which controls the frequency on the right side\n\t\t\t * @type {Tone.LFO}\n\t\t\t * @private\n\t\t\t */\n\t this._lfoR = new Tone.LFO(options.frequency, 0, 1);\n\t this._lfoR.phase = 180;\n\t /**\n\t\t\t * the base modulation frequency\n\t\t\t * @type {number}\n\t\t\t * @private\n\t\t\t */\n\t this._baseFrequency = options.baseFrequency;\n\t /**\n\t\t\t * the octaves of the phasing\n\t\t\t * @type {number}\n\t\t\t * @private\n\t\t\t */\n\t this._octaves = options.octaves;\n\t /**\n\t\t\t * The quality factor of the filters\n\t\t\t * @type {Positive}\n\t\t\t * @signal\n\t\t\t */\n\t this.Q = new Tone.Signal(options.Q, Tone.Type.Positive);\n\t /**\n\t\t\t * the array of filters for the left side\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._filtersL = this._makeFilters(options.stages, this._lfoL, this.Q);\n\t /**\n\t\t\t * the array of filters for the left side\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._filtersR = this._makeFilters(options.stages, this._lfoR, this.Q);\n\t /**\n\t\t\t * the frequency of the effect\n\t\t\t * @type {Tone.Signal}\n\t\t\t */\n\t this.frequency = this._lfoL.frequency;\n\t this.frequency.value = options.frequency;\n\t //connect them up\n\t this.effectSendL.connect(this._filtersL[0]);\n\t this.effectSendR.connect(this._filtersR[0]);\n\t this._filtersL[options.stages - 1].connect(this.effectReturnL);\n\t this._filtersR[options.stages - 1].connect(this.effectReturnR);\n\t //control the frequency with one LFO\n\t this._lfoL.frequency.connect(this._lfoR.frequency);\n\t //set the options\n\t this.baseFrequency = options.baseFrequency;\n\t this.octaves = options.octaves;\n\t //start the lfo\n\t this._lfoL.start();\n\t this._lfoR.start();\n\t this._readOnly([\n\t 'frequency',\n\t 'Q'\n\t ]);\n\t };\n\t Tone.extend(Tone.Phaser, Tone.StereoEffect);\n\t /**\n\t\t * defaults\n\t\t * @static\n\t\t * @type {object}\n\t\t */\n\t Tone.Phaser.defaults = {\n\t 'frequency': 0.5,\n\t 'octaves': 3,\n\t 'stages': 10,\n\t 'Q': 10,\n\t 'baseFrequency': 350\n\t };\n\t /**\n\t\t * @param {number} stages\n\t\t * @returns {Array} the number of filters all connected together\n\t\t * @private\n\t\t */\n\t Tone.Phaser.prototype._makeFilters = function (stages, connectToFreq, Q) {\n\t var filters = new Array(stages);\n\t //make all the filters\n\t for (var i = 0; i < stages; i++) {\n\t var filter = this.context.createBiquadFilter();\n\t filter.type = 'allpass';\n\t Q.connect(filter.Q);\n\t connectToFreq.connect(filter.frequency);\n\t filters[i] = filter;\n\t }\n\t this.connectSeries.apply(this, filters);\n\t return filters;\n\t };\n\t /**\n\t\t * The number of octaves the phase goes above\n\t\t * the baseFrequency\n\t\t * @memberOf Tone.Phaser#\n\t\t * @type {Positive}\n\t\t * @name octaves\n\t\t */\n\t Object.defineProperty(Tone.Phaser.prototype, 'octaves', {\n\t get: function () {\n\t return this._octaves;\n\t },\n\t set: function (octaves) {\n\t this._octaves = octaves;\n\t var max = this._baseFrequency * Math.pow(2, octaves);\n\t this._lfoL.max = max;\n\t this._lfoR.max = max;\n\t }\n\t });\n\t /**\n\t\t * The the base frequency of the filters. \n\t\t * @memberOf Tone.Phaser#\n\t\t * @type {number}\n\t\t * @name baseFrequency\n\t\t */\n\t Object.defineProperty(Tone.Phaser.prototype, 'baseFrequency', {\n\t get: function () {\n\t return this._baseFrequency;\n\t },\n\t set: function (freq) {\n\t this._baseFrequency = freq;\n\t this._lfoL.min = freq;\n\t this._lfoR.min = freq;\n\t this.octaves = this._octaves;\n\t }\n\t });\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.Phaser} this\n\t\t */\n\t Tone.Phaser.prototype.dispose = function () {\n\t Tone.StereoEffect.prototype.dispose.call(this);\n\t this._writable([\n\t 'frequency',\n\t 'Q'\n\t ]);\n\t this.Q.dispose();\n\t this.Q = null;\n\t this._lfoL.dispose();\n\t this._lfoL = null;\n\t this._lfoR.dispose();\n\t this._lfoR = null;\n\t for (var i = 0; i < this._filtersL.length; i++) {\n\t this._filtersL[i].disconnect();\n\t this._filtersL[i] = null;\n\t }\n\t this._filtersL = null;\n\t for (var j = 0; j < this._filtersR.length; j++) {\n\t this._filtersR[j].disconnect();\n\t this._filtersR[j] = null;\n\t }\n\t this._filtersR = null;\n\t this.frequency = null;\n\t return this;\n\t };\n\t return Tone.Phaser;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.PingPongDelay is a feedback delay effect where the echo is heard\n\t\t * first in one channel and next in the opposite channel. In a stereo\n\t\t * system these are the right and left channels.\n\t\t * PingPongDelay in more simplified terms is two Tone.FeedbackDelays \n\t\t * with independent delay values. Each delay is routed to one channel\n\t\t * (left or right), and the channel triggered second will always \n\t\t * trigger at the same interval after the first.\n\t\t *\n\t\t * \t@constructor\n\t\t * \t@extends {Tone.StereoXFeedbackEffect}\n\t\t * @param {Time|Object} [delayTime] The delayTime between consecutive echos.\n\t\t * @param {NormalRange=} feedback The amount of the effected signal which \n\t\t * is fed back through the delay.\n\t\t * @example\n\t\t * var pingPong = new Tone.PingPongDelay(\"4n\", 0.2).toMaster();\n\t\t * var drum = new Tone.DrumSynth().connect(pingPong);\n\t\t * drum.triggerAttackRelease(\"C4\", \"32n\");\n\t\t */\n\t Tone.PingPongDelay = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'delayTime',\n\t 'feedback'\n\t ], Tone.PingPongDelay.defaults);\n\t Tone.StereoXFeedbackEffect.call(this, options);\n\t /**\n\t\t\t * the delay node on the left side\n\t\t\t * @type {Tone.Delay}\n\t\t\t * @private\n\t\t\t */\n\t this._leftDelay = new Tone.Delay(0, options.maxDelayTime);\n\t /**\n\t\t\t * the delay node on the right side\n\t\t\t * @type {Tone.Delay}\n\t\t\t * @private\n\t\t\t */\n\t this._rightDelay = new Tone.Delay(0, options.maxDelayTime);\n\t /**\n\t\t\t * the predelay on the right side\n\t\t\t * @type {Tone.Delay}\n\t\t\t * @private\n\t\t\t */\n\t this._rightPreDelay = new Tone.Delay(0, options.maxDelayTime);\n\t /**\n\t\t\t * the delay time signal\n\t\t\t * @type {Time}\n\t\t\t * @signal\n\t\t\t */\n\t this.delayTime = new Tone.Signal(options.delayTime, Tone.Type.Time);\n\t //connect it up\n\t this.effectSendL.chain(this._leftDelay, this.effectReturnL);\n\t this.effectSendR.chain(this._rightPreDelay, this._rightDelay, this.effectReturnR);\n\t this.delayTime.fan(this._leftDelay.delayTime, this._rightDelay.delayTime, this._rightPreDelay.delayTime);\n\t //rearranged the feedback to be after the rightPreDelay\n\t this._feedbackLR.disconnect();\n\t this._feedbackLR.connect(this._rightDelay);\n\t this._readOnly(['delayTime']);\n\t };\n\t Tone.extend(Tone.PingPongDelay, Tone.StereoXFeedbackEffect);\n\t /**\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.PingPongDelay.defaults = {\n\t 'delayTime': 0.25,\n\t 'maxDelayTime': 1\n\t };\n\t /**\n\t\t * Clean up. \n\t\t * @returns {Tone.PingPongDelay} this\n\t\t */\n\t Tone.PingPongDelay.prototype.dispose = function () {\n\t Tone.StereoXFeedbackEffect.prototype.dispose.call(this);\n\t this._leftDelay.dispose();\n\t this._leftDelay = null;\n\t this._rightDelay.dispose();\n\t this._rightDelay = null;\n\t this._rightPreDelay.dispose();\n\t this._rightPreDelay = null;\n\t this._writable(['delayTime']);\n\t this.delayTime.dispose();\n\t this.delayTime = null;\n\t return this;\n\t };\n\t return Tone.PingPongDelay;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.PitchShift does near-realtime pitch shifting to the incoming signal. \n\t\t * The effect is achieved by speeding up or slowing down the delayTime\n\t\t * of a DelayNode using a sawtooth wave. \n\t\t * Algorithm found in [this pdf](http://dsp-book.narod.ru/soundproc.pdf).\n\t\t * Additional reference by [Miller Pucket](http://msp.ucsd.edu/techniques/v0.11/book-html/node115.html).\n\t\t * \n\t\t * @extends {Tone.FeedbackEffect}\n\t\t * @param {Interval=} pitch The interval to transpose the incoming signal by. \n\t\t */\n\t Tone.PitchShift = function () {\n\t var options = this.optionsObject(arguments, ['pitch'], Tone.PitchShift.defaults);\n\t Tone.FeedbackEffect.call(this, options);\n\t /**\n\t\t\t * The pitch signal\n\t\t\t * @type {Tone.Signal}\n\t\t\t * @private\n\t\t\t */\n\t this._frequency = new Tone.Signal(0);\n\t /**\n\t\t\t * Uses two DelayNodes to cover up the jump in\n\t\t\t * the sawtooth wave. \n\t\t\t * @type {DelayNode}\n\t\t\t * @private\n\t\t\t */\n\t this._delayA = new Tone.Delay(0, 1);\n\t /**\n\t\t\t * The first LFO.\n\t\t\t * @type {Tone.LFO}\n\t\t\t * @private\n\t\t\t */\n\t this._lfoA = new Tone.LFO({\n\t 'min': 0,\n\t 'max': 0.1,\n\t 'type': 'sawtooth'\n\t }).connect(this._delayA.delayTime);\n\t /**\n\t\t\t * The second DelayNode\n\t\t\t * @type {DelayNode}\n\t\t\t * @private\n\t\t\t */\n\t this._delayB = new Tone.Delay(0, 1);\n\t /**\n\t\t\t * The first LFO.\n\t\t\t * @type {Tone.LFO}\n\t\t\t * @private\n\t\t\t */\n\t this._lfoB = new Tone.LFO({\n\t 'min': 0,\n\t 'max': 0.1,\n\t 'type': 'sawtooth',\n\t 'phase': 180\n\t }).connect(this._delayB.delayTime);\n\t /**\n\t\t\t * Crossfade quickly between the two delay lines\n\t\t\t * to cover up the jump in the sawtooth wave\n\t\t\t * @type {Tone.CrossFade}\n\t\t\t * @private\n\t\t\t */\n\t this._crossFade = new Tone.CrossFade();\n\t /**\n\t\t\t * LFO which alternates between the two\n\t\t\t * delay lines to cover up the disparity in the\n\t\t\t * sawtooth wave. \n\t\t\t * @type {Tone.LFO}\n\t\t\t * @private\n\t\t\t */\n\t this._crossFadeLFO = new Tone.LFO({\n\t 'min': 0,\n\t 'max': 1,\n\t 'type': 'triangle',\n\t 'phase': 90\n\t }).connect(this._crossFade.fade);\n\t /**\n\t\t\t * The delay node\n\t\t\t * @type {Tone.Delay}\n\t\t\t * @private\n\t\t\t */\n\t this._feedbackDelay = new Tone.Delay(options.delayTime);\n\t /**\n\t\t\t * The amount of delay on the input signal\n\t\t\t * @type {Time}\n\t\t\t * @signal\n\t\t\t */\n\t this.delayTime = this._feedbackDelay.delayTime;\n\t this._readOnly('delayTime');\n\t /**\n\t\t\t * Hold the current pitch\n\t\t\t * @type {Number}\n\t\t\t * @private\n\t\t\t */\n\t this._pitch = options.pitch;\n\t /**\n\t\t\t * Hold the current windowSize\n\t\t\t * @type {Number}\n\t\t\t * @private\n\t\t\t */\n\t this._windowSize = options.windowSize;\n\t //connect the two delay lines up\n\t this._delayA.connect(this._crossFade.a);\n\t this._delayB.connect(this._crossFade.b);\n\t //connect the frequency\n\t this._frequency.fan(this._lfoA.frequency, this._lfoB.frequency, this._crossFadeLFO.frequency);\n\t //route the input\n\t this.effectSend.fan(this._delayA, this._delayB);\n\t this._crossFade.chain(this._feedbackDelay, this.effectReturn);\n\t //start the LFOs at the same time\n\t var now = this.now();\n\t this._lfoA.start(now);\n\t this._lfoB.start(now);\n\t this._crossFadeLFO.start(now);\n\t //set the initial value\n\t this.windowSize = this._windowSize;\n\t };\n\t Tone.extend(Tone.PitchShift, Tone.FeedbackEffect);\n\t /**\n\t\t * default values\n\t\t * @static\n\t\t * @type {Object}\n\t\t * @const\n\t\t */\n\t Tone.PitchShift.defaults = {\n\t 'pitch': 0,\n\t 'windowSize': 0.1,\n\t 'delayTime': 0,\n\t 'feedback': 0\n\t };\n\t /**\n\t\t * Repitch the incoming signal by some interval (measured\n\t\t * in semi-tones). \n\t\t * @memberOf Tone.PitchShift#\n\t\t * @type {Interval}\n\t\t * @name pitch\n\t\t * @example\n\t\t * pitchShift.pitch = -12; //down one octave\n\t\t * pitchShift.pitch = 7; //up a fifth\n\t\t */\n\t Object.defineProperty(Tone.PitchShift.prototype, 'pitch', {\n\t get: function () {\n\t return this._pitch;\n\t },\n\t set: function (interval) {\n\t this._pitch = interval;\n\t var factor = 0;\n\t if (interval < 0) {\n\t this._lfoA.min = 0;\n\t this._lfoA.max = this._windowSize;\n\t this._lfoB.min = 0;\n\t this._lfoB.max = this._windowSize;\n\t factor = this.intervalToFrequencyRatio(interval - 1) + 1;\n\t } else {\n\t this._lfoA.min = this._windowSize;\n\t this._lfoA.max = 0;\n\t this._lfoB.min = this._windowSize;\n\t this._lfoB.max = 0;\n\t factor = this.intervalToFrequencyRatio(interval) - 1;\n\t }\n\t this._frequency.value = factor * (1.2 / this._windowSize);\n\t }\n\t });\n\t /**\n\t\t * The window size corresponds roughly to the sample length in a looping sampler. \n\t\t * Smaller values are desirable for a less noticeable delay time of the pitch shifted\n\t\t * signal, but larger values will result in smoother pitch shifting for larger intervals. \n\t\t * A nominal range of 0.03 to 0.1 is recommended. \n\t\t * @memberOf Tone.PitchShift#\n\t\t * @type {Time}\n\t\t * @name windowSize\n\t\t * @example\n\t\t * pitchShift.windowSize = 0.1;\n\t\t */\n\t Object.defineProperty(Tone.PitchShift.prototype, 'windowSize', {\n\t get: function () {\n\t return this._windowSize;\n\t },\n\t set: function (size) {\n\t this._windowSize = this.toSeconds(size);\n\t this.pitch = this._pitch;\n\t }\n\t });\n\t /**\n\t\t * Clean up.\n\t\t * @return {Tone.PitchShift} this\n\t\t */\n\t Tone.PitchShift.prototype.dispose = function () {\n\t Tone.FeedbackEffect.prototype.dispose.call(this);\n\t this._frequency.dispose();\n\t this._frequency = null;\n\t this._delayA.disconnect();\n\t this._delayA = null;\n\t this._delayB.disconnect();\n\t this._delayB = null;\n\t this._lfoA.dispose();\n\t this._lfoA = null;\n\t this._lfoB.dispose();\n\t this._lfoB = null;\n\t this._crossFade.dispose();\n\t this._crossFade = null;\n\t this._crossFadeLFO.dispose();\n\t this._crossFadeLFO = null;\n\t this._writable('delayTime');\n\t this._feedbackDelay.dispose();\n\t this._feedbackDelay = null;\n\t this.delayTime = null;\n\t return this;\n\t };\n\t return Tone.PitchShift;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Base class for stereo feedback effects where the effectReturn\n\t\t * is fed back into the same channel. \n\t\t *\n\t\t *\t@constructor\n\t\t *\t@extends {Tone.FeedbackEffect}\n\t\t */\n\t Tone.StereoFeedbackEffect = function () {\n\t var options = this.optionsObject(arguments, ['feedback'], Tone.FeedbackEffect.defaults);\n\t Tone.StereoEffect.call(this, options);\n\t /**\n\t\t\t * controls the amount of feedback\n\t\t\t * @type {NormalRange}\n\t\t\t * @signal\n\t\t\t */\n\t this.feedback = new Tone.Signal(options.feedback, Tone.Type.NormalRange);\n\t /**\n\t\t\t * the left side feeback\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this._feedbackL = new Tone.Gain();\n\t /**\n\t\t\t * the right side feeback\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this._feedbackR = new Tone.Gain();\n\t //connect it up\n\t this.effectReturnL.chain(this._feedbackL, this.effectSendL);\n\t this.effectReturnR.chain(this._feedbackR, this.effectSendR);\n\t this.feedback.fan(this._feedbackL.gain, this._feedbackR.gain);\n\t this._readOnly(['feedback']);\n\t };\n\t Tone.extend(Tone.StereoFeedbackEffect, Tone.FeedbackEffect);\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.StereoFeedbackEffect} this\n\t\t */\n\t Tone.StereoFeedbackEffect.prototype.dispose = function () {\n\t Tone.StereoEffect.prototype.dispose.call(this);\n\t this._writable(['feedback']);\n\t this.feedback.dispose();\n\t this.feedback = null;\n\t this._feedbackL.dispose();\n\t this._feedbackL = null;\n\t this._feedbackR.dispose();\n\t this._feedbackR = null;\n\t return this;\n\t };\n\t return Tone.StereoFeedbackEffect;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Applies a width factor to the mid/side seperation. \n\t\t * 0 is all mid and 1 is all side.\n\t\t * Algorithm found in [kvraudio forums](http://www.kvraudio.com/forum/viewtopic.php?t=212587).\n\t\t * <br><br>\n\t\t * <code>\n\t\t * Mid *= 2*(1-width)<br>\n\t\t * Side *= 2*width\n\t\t * </code>\n\t\t *\n\t\t * @extends {Tone.MidSideEffect}\n\t\t * @constructor\n\t\t * @param {NormalRange|Object} [width] The stereo width. A width of 0 is mono and 1 is stereo. 0.5 is no change.\n\t\t */\n\t Tone.StereoWidener = function () {\n\t var options = this.optionsObject(arguments, ['width'], Tone.StereoWidener.defaults);\n\t Tone.MidSideEffect.call(this, options);\n\t /**\n\t\t\t * The width control. 0 = 100% mid. 1 = 100% side. 0.5 = no change. \n\t\t\t * @type {NormalRange}\n\t\t\t * @signal\n\t\t\t */\n\t this.width = new Tone.Signal(options.width, Tone.Type.NormalRange);\n\t /**\n\t\t\t * Mid multiplier\n\t\t\t * @type {Tone.Expr}\n\t\t\t * @private\n\t\t\t */\n\t this._midMult = new Tone.Expr('$0 * ($1 * (1 - $2))');\n\t /**\n\t\t\t * Side multiplier\n\t\t\t * @type {Tone.Expr}\n\t\t\t * @private\n\t\t\t */\n\t this._sideMult = new Tone.Expr('$0 * ($1 * $2)');\n\t /**\n\t\t\t * constant output of 2\n\t\t\t * @type {Tone}\n\t\t\t * @private\n\t\t\t */\n\t this._two = new Tone.Signal(2);\n\t //the mid chain\n\t this._two.connect(this._midMult, 0, 1);\n\t this.width.connect(this._midMult, 0, 2);\n\t //the side chain\n\t this._two.connect(this._sideMult, 0, 1);\n\t this.width.connect(this._sideMult, 0, 2);\n\t //connect it to the effect send/return\n\t this.midSend.chain(this._midMult, this.midReturn);\n\t this.sideSend.chain(this._sideMult, this.sideReturn);\n\t this._readOnly(['width']);\n\t };\n\t Tone.extend(Tone.StereoWidener, Tone.MidSideEffect);\n\t /**\n\t\t * the default values\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.StereoWidener.defaults = { 'width': 0.5 };\n\t /**\n\t\t * Clean up. \n\t\t * @returns {Tone.StereoWidener} this\n\t\t */\n\t Tone.StereoWidener.prototype.dispose = function () {\n\t Tone.MidSideEffect.prototype.dispose.call(this);\n\t this._writable(['width']);\n\t this.width.dispose();\n\t this.width = null;\n\t this._midMult.dispose();\n\t this._midMult = null;\n\t this._sideMult.dispose();\n\t this._sideMult = null;\n\t this._two.dispose();\n\t this._two = null;\n\t return this;\n\t };\n\t return Tone.StereoWidener;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Tremolo modulates the amplitude of an incoming signal using a Tone.LFO.\n\t\t * The type, frequency, and depth of the LFO is controllable.\n\t\t *\n\t\t * @extends {Tone.StereoEffect}\n\t\t * @constructor\n\t\t * @param {Frequency} [frequency] The rate of the effect.\n\t\t * @param {NormalRange} [depth] The depth of the effect.\n\t\t * @example\n\t\t * //create a tremolo and start it's LFO\n\t\t * var tremolo = new Tone.Tremolo(9, 0.75).toMaster().start();\n\t\t * //route an oscillator through the tremolo and start it\n\t\t * var oscillator = new Tone.Oscillator().connect(tremolo).start();\n\t\t */\n\t Tone.Tremolo = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'frequency',\n\t 'depth'\n\t ], Tone.Tremolo.defaults);\n\t Tone.StereoEffect.call(this, options);\n\t /**\n\t\t\t * The tremelo LFO in the left channel\n\t\t\t * @type {Tone.LFO}\n\t\t\t * @private\n\t\t\t */\n\t this._lfoL = new Tone.LFO({\n\t 'phase': options.spread,\n\t 'min': 1,\n\t 'max': 0\n\t });\n\t /**\n\t\t\t * The tremelo LFO in the left channel\n\t\t\t * @type {Tone.LFO}\n\t\t\t * @private\n\t\t\t */\n\t this._lfoR = new Tone.LFO({\n\t 'phase': options.spread,\n\t 'min': 1,\n\t 'max': 0\n\t });\n\t /**\n\t\t\t * Where the gain is multiplied\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this._amplitudeL = new Tone.Gain();\n\t /**\n\t\t\t * Where the gain is multiplied\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this._amplitudeR = new Tone.Gain();\n\t /**\n\t\t\t * The frequency of the tremolo.\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.frequency = new Tone.Signal(options.frequency, Tone.Type.Frequency);\n\t /**\n\t\t\t * The depth of the effect. A depth of 0, has no effect\n\t\t\t * on the amplitude, and a depth of 1 makes the amplitude\n\t\t\t * modulate fully between 0 and 1.\n\t\t\t * @type {NormalRange}\n\t\t\t * @signal\n\t\t\t */\n\t this.depth = new Tone.Signal(options.depth, Tone.Type.NormalRange);\n\t this._readOnly([\n\t 'frequency',\n\t 'depth'\n\t ]);\n\t this.effectSendL.chain(this._amplitudeL, this.effectReturnL);\n\t this.effectSendR.chain(this._amplitudeR, this.effectReturnR);\n\t this._lfoL.connect(this._amplitudeL.gain);\n\t this._lfoR.connect(this._amplitudeR.gain);\n\t this.frequency.fan(this._lfoL.frequency, this._lfoR.frequency);\n\t this.depth.fan(this._lfoR.amplitude, this._lfoL.amplitude);\n\t this.type = options.type;\n\t this.spread = options.spread;\n\t };\n\t Tone.extend(Tone.Tremolo, Tone.StereoEffect);\n\t /**\n\t\t * @static\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.Tremolo.defaults = {\n\t 'frequency': 10,\n\t 'type': 'sine',\n\t 'depth': 0.5,\n\t 'spread': 180\n\t };\n\t /**\n\t\t * Start the tremolo.\n\t\t * @param {Time} [time=now] When the tremolo begins.\n\t\t * @returns {Tone.Tremolo} this\n\t\t */\n\t Tone.Tremolo.prototype.start = function (time) {\n\t this._lfoL.start(time);\n\t this._lfoR.start(time);\n\t return this;\n\t };\n\t /**\n\t\t * Stop the tremolo.\n\t\t * @param {Time} [time=now] When the tremolo stops.\n\t\t * @returns {Tone.Tremolo} this\n\t\t */\n\t Tone.Tremolo.prototype.stop = function (time) {\n\t this._lfoL.stop(time);\n\t this._lfoR.stop(time);\n\t return this;\n\t };\n\t /**\n\t\t * Sync the effect to the transport.\n\t\t * @param {Time} [delay=0] Delay time before starting the effect after the\n\t\t * Transport has started.\n\t\t * @returns {Tone.AutoFilter} this\n\t\t */\n\t Tone.Tremolo.prototype.sync = function (delay) {\n\t this._lfoL.sync(delay);\n\t this._lfoR.sync(delay);\n\t return this;\n\t };\n\t /**\n\t\t * Unsync the filter from the transport\n\t\t * @returns {Tone.Tremolo} this\n\t\t */\n\t Tone.Tremolo.prototype.unsync = function () {\n\t this._lfoL.unsync();\n\t this._lfoR.unsync();\n\t return this;\n\t };\n\t /**\n\t\t * The Tremolo's oscillator type.\n\t\t * @memberOf Tone.Tremolo#\n\t\t * @type {string}\n\t\t * @name type\n\t\t */\n\t Object.defineProperty(Tone.Tremolo.prototype, 'type', {\n\t get: function () {\n\t return this._lfoL.type;\n\t },\n\t set: function (type) {\n\t this._lfoL.type = type;\n\t this._lfoR.type = type;\n\t }\n\t });\n\t /** \n\t\t * Amount of stereo spread. When set to 0, both LFO's will be panned centrally.\n\t\t * When set to 180, LFO's will be panned hard left and right respectively.\n\t\t * @memberOf Tone.Tremolo#\n\t\t * @type {Degrees}\n\t\t * @name spread\n\t\t */\n\t Object.defineProperty(Tone.Tremolo.prototype, 'spread', {\n\t get: function () {\n\t return this._lfoR.phase - this._lfoL.phase; //180\n\t },\n\t set: function (spread) {\n\t this._lfoL.phase = 90 - spread / 2;\n\t this._lfoR.phase = spread / 2 + 90;\n\t }\n\t });\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.Tremolo} this\n\t\t */\n\t Tone.Tremolo.prototype.dispose = function () {\n\t Tone.StereoEffect.prototype.dispose.call(this);\n\t this._writable([\n\t 'frequency',\n\t 'depth'\n\t ]);\n\t this._lfoL.dispose();\n\t this._lfoL = null;\n\t this._lfoR.dispose();\n\t this._lfoR = null;\n\t this._amplitudeL.dispose();\n\t this._amplitudeL = null;\n\t this._amplitudeR.dispose();\n\t this._amplitudeR = null;\n\t this.frequency = null;\n\t this.depth = null;\n\t return this;\n\t };\n\t return Tone.Tremolo;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class A Vibrato effect composed of a Tone.Delay and a Tone.LFO. The LFO\n\t\t * modulates the delayTime of the delay, causing the pitch to rise\n\t\t * and fall. \n\t\t * @extends {Tone.Effect}\n\t\t * @param {Frequency} frequency The frequency of the vibrato.\n\t\t * @param {NormalRange} depth The amount the pitch is modulated.\n\t\t */\n\t Tone.Vibrato = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'frequency',\n\t 'depth'\n\t ], Tone.Vibrato.defaults);\n\t Tone.Effect.call(this, options);\n\t /**\n\t\t\t * The delay node used for the vibrato effect\n\t\t\t * @type {Tone.Delay}\n\t\t\t * @private\n\t\t\t */\n\t this._delayNode = new Tone.Delay(0, options.maxDelay);\n\t /**\n\t\t\t * The LFO used to control the vibrato\n\t\t\t * @type {Tone.LFO}\n\t\t\t * @private\n\t\t\t */\n\t this._lfo = new Tone.LFO({\n\t 'type': options.type,\n\t 'min': 0,\n\t 'max': options.maxDelay,\n\t 'frequency': options.frequency,\n\t 'phase': -90 //offse the phase so the resting position is in the center\n\t }).start().connect(this._delayNode.delayTime);\n\t /**\n\t\t\t * The frequency of the vibrato\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.frequency = this._lfo.frequency;\n\t /**\n\t\t\t * The depth of the vibrato. \n\t\t\t * @type {NormalRange}\n\t\t\t * @signal\n\t\t\t */\n\t this.depth = this._lfo.amplitude;\n\t this.depth.value = options.depth;\n\t this._readOnly([\n\t 'frequency',\n\t 'depth'\n\t ]);\n\t this.effectSend.chain(this._delayNode, this.effectReturn);\n\t };\n\t Tone.extend(Tone.Vibrato, Tone.Effect);\n\t /**\n\t\t * The defaults\n\t\t * @type {Object}\n\t\t * @const\n\t\t */\n\t Tone.Vibrato.defaults = {\n\t 'maxDelay': 0.005,\n\t 'frequency': 5,\n\t 'depth': 0.1,\n\t 'type': 'sine'\n\t };\n\t /**\n\t\t * Type of oscillator attached to the Vibrato.\n\t\t * @memberOf Tone.Vibrato#\n\t\t * @type {string}\n\t\t * @name type\n\t\t */\n\t Object.defineProperty(Tone.Vibrato.prototype, 'type', {\n\t get: function () {\n\t return this._lfo.type;\n\t },\n\t set: function (type) {\n\t this._lfo.type = type;\n\t }\n\t });\n\t /**\n\t\t * Clean up.\n\t\t * @returns {Tone.Vibrato} this\n\t\t */\n\t Tone.Vibrato.prototype.dispose = function () {\n\t Tone.Effect.prototype.dispose.call(this);\n\t this._delayNode.dispose();\n\t this._delayNode = null;\n\t this._lfo.dispose();\n\t this._lfo = null;\n\t this._writable([\n\t 'frequency',\n\t 'depth'\n\t ]);\n\t this.frequency = null;\n\t this.depth = null;\n\t };\n\t return Tone.Vibrato;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Event abstracts away Tone.Transport.schedule and provides a schedulable\n\t\t * callback for a single or repeatable events along the timeline. \n\t\t *\n\t\t * @extends {Tone}\n\t\t * @param {function} callback The callback to invoke at the time. \n\t\t * @param {*} value The value or values which should be passed to\n\t\t * the callback function on invocation. \n\t\t * @example\n\t\t * var chord = new Tone.Event(function(time, chord){\n\t\t * \t//the chord as well as the exact time of the event\n\t\t * \t//are passed in as arguments to the callback function\n\t\t * }, [\"D4\", \"E4\", \"F4\"]);\n\t\t * //start the chord at the beginning of the transport timeline\n\t\t * chord.start();\n\t\t * //loop it every measure for 8 measures\n\t\t * chord.loop = 8;\n\t\t * chord.loopEnd = \"1m\";\n\t\t */\n\t Tone.Event = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'callback',\n\t 'value'\n\t ], Tone.Event.defaults);\n\t /**\n\t\t\t * Loop value\n\t\t\t * @type {Boolean|Positive}\n\t\t\t * @private\n\t\t\t */\n\t this._loop = options.loop;\n\t /**\n\t\t\t * The callback to invoke. \n\t\t\t * @type {Function}\n\t\t\t */\n\t this.callback = options.callback;\n\t /**\n\t\t\t * The value which is passed to the\n\t\t\t * callback function.\n\t\t\t * @type {*}\n\t\t\t * @private\n\t\t\t */\n\t this.value = options.value;\n\t /**\n\t\t\t * When the note is scheduled to start.\n\t\t\t * @type {Number}\n\t\t\t * @private\n\t\t\t */\n\t this._loopStart = this.toTicks(options.loopStart);\n\t /**\n\t\t\t * When the note is scheduled to start.\n\t\t\t * @type {Number}\n\t\t\t * @private\n\t\t\t */\n\t this._loopEnd = this.toTicks(options.loopEnd);\n\t /**\n\t\t\t * Tracks the scheduled events\n\t\t\t * @type {Tone.TimelineState}\n\t\t\t * @private\n\t\t\t */\n\t this._state = new Tone.TimelineState(Tone.State.Stopped);\n\t /**\n\t\t\t * The playback speed of the note. A speed of 1\n\t\t\t * is no change. \n\t\t\t * @private\n\t\t\t * @type {Positive}\n\t\t\t */\n\t this._playbackRate = 1;\n\t /**\n\t\t\t * A delay time from when the event is scheduled to start\n\t\t\t * @type {Ticks}\n\t\t\t * @private\n\t\t\t */\n\t this._startOffset = 0;\n\t /**\n\t\t\t * The probability that the callback will be invoked\n\t\t\t * at the scheduled time. \n\t\t\t * @type {NormalRange}\n\t\t\t * @example\n\t\t\t * //the callback will be invoked 50% of the time\n\t\t\t * event.probability = 0.5;\n\t\t\t */\n\t this.probability = options.probability;\n\t /**\n\t\t\t * If set to true, will apply small (+/-0.02 seconds) random variation\n\t\t\t * to the callback time. If the value is given as a time, it will randomize\n\t\t\t * by that amount.\n\t\t\t * @example\n\t\t\t * event.humanize = true;\n\t\t\t * @type {Boolean|Time}\n\t\t\t */\n\t this.humanize = options.humanize;\n\t /**\n\t\t\t * If mute is true, the callback won't be\n\t\t\t * invoked.\n\t\t\t * @type {Boolean}\n\t\t\t */\n\t this.mute = options.mute;\n\t //set the initial values\n\t this.playbackRate = options.playbackRate;\n\t };\n\t Tone.extend(Tone.Event);\n\t /**\n\t\t * The default values\n\t\t * @type {Object}\n\t\t * @const\n\t\t */\n\t Tone.Event.defaults = {\n\t 'callback': Tone.noOp,\n\t 'loop': false,\n\t 'loopEnd': '1m',\n\t 'loopStart': 0,\n\t 'playbackRate': 1,\n\t 'value': null,\n\t 'probability': 1,\n\t 'mute': false,\n\t 'humanize': false\n\t };\n\t /**\n\t\t * Reschedule all of the events along the timeline\n\t\t * with the updated values.\n\t\t * @param {Time} after Only reschedules events after the given time.\n\t\t * @return {Tone.Event} this\n\t\t * @private\n\t\t */\n\t Tone.Event.prototype._rescheduleEvents = function (after) {\n\t //if no argument is given, schedules all of the events\n\t after = this.defaultArg(after, -1);\n\t this._state.forEachFrom(after, function (event) {\n\t var duration;\n\t if (event.state === Tone.State.Started) {\n\t if (!this.isUndef(event.id)) {\n\t Tone.Transport.clear(event.id);\n\t }\n\t var startTick = event.time + Math.round(this.startOffset / this._playbackRate);\n\t if (this._loop) {\n\t duration = Infinity;\n\t if (this.isNumber(this._loop)) {\n\t duration = this._loop * this._getLoopDuration();\n\t }\n\t var nextEvent = this._state.getAfter(startTick);\n\t if (nextEvent !== null) {\n\t duration = Math.min(duration, nextEvent.time - startTick);\n\t }\n\t if (duration !== Infinity) {\n\t //schedule a stop since it's finite duration\n\t this._state.setStateAtTime(Tone.State.Stopped, startTick + duration + 1);\n\t duration = Tone.Time(duration, 'i');\n\t }\n\t var interval = Tone.Time(this._getLoopDuration(), 'i');\n\t event.id = Tone.Transport.scheduleRepeat(this._tick.bind(this), interval, Tone.TransportTime(startTick, 'i'), duration);\n\t } else {\n\t event.id = Tone.Transport.schedule(this._tick.bind(this), startTick + 'i');\n\t }\n\t }\n\t }.bind(this));\n\t return this;\n\t };\n\t /**\n\t\t * Returns the playback state of the note, either \"started\" or \"stopped\".\n\t\t * @type {String}\n\t\t * @readOnly\n\t\t * @memberOf Tone.Event#\n\t\t * @name state\n\t\t */\n\t Object.defineProperty(Tone.Event.prototype, 'state', {\n\t get: function () {\n\t return this._state.getValueAtTime(Tone.Transport.ticks);\n\t }\n\t });\n\t /**\n\t\t * The start from the scheduled start time\n\t\t * @type {Ticks}\n\t\t * @memberOf Tone.Event#\n\t\t * @name startOffset\n\t\t * @private\n\t\t */\n\t Object.defineProperty(Tone.Event.prototype, 'startOffset', {\n\t get: function () {\n\t return this._startOffset;\n\t },\n\t set: function (offset) {\n\t this._startOffset = offset;\n\t }\n\t });\n\t /**\n\t\t * Start the note at the given time. \n\t\t * @param {TimelinePosition} time When the note should start.\n\t\t * @return {Tone.Event} this\n\t\t */\n\t Tone.Event.prototype.start = function (time) {\n\t time = this.toTicks(time);\n\t if (this._state.getValueAtTime(time) === Tone.State.Stopped) {\n\t this._state.add({\n\t 'state': Tone.State.Started,\n\t 'time': time,\n\t 'id': undefined\n\t });\n\t this._rescheduleEvents(time);\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Stop the Event at the given time.\n\t\t * @param {TimelinePosition} time When the note should stop.\n\t\t * @return {Tone.Event} this\n\t\t */\n\t Tone.Event.prototype.stop = function (time) {\n\t this.cancel(time);\n\t time = this.toTicks(time);\n\t if (this._state.getValueAtTime(time) === Tone.State.Started) {\n\t this._state.setStateAtTime(Tone.State.Stopped, time);\n\t var previousEvent = this._state.getBefore(time);\n\t var reschedulTime = time;\n\t if (previousEvent !== null) {\n\t reschedulTime = previousEvent.time;\n\t }\n\t this._rescheduleEvents(reschedulTime);\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Cancel all scheduled events greater than or equal to the given time\n\t\t * @param {TimelinePosition} [time=0] The time after which events will be cancel.\n\t\t * @return {Tone.Event} this\n\t\t */\n\t Tone.Event.prototype.cancel = function (time) {\n\t time = this.defaultArg(time, -Infinity);\n\t time = this.toTicks(time);\n\t this._state.forEachFrom(time, function (event) {\n\t Tone.Transport.clear(event.id);\n\t });\n\t this._state.cancel(time);\n\t return this;\n\t };\n\t /**\n\t\t * The callback function invoker. Also \n\t\t * checks if the Event is done playing\n\t\t * @param {Number} time The time of the event in seconds\n\t\t * @private\n\t\t */\n\t Tone.Event.prototype._tick = function (time) {\n\t if (!this.mute && this._state.getValueAtTime(Tone.Transport.ticks) === Tone.State.Started) {\n\t if (this.probability < 1 && Math.random() > this.probability) {\n\t return;\n\t }\n\t if (this.humanize) {\n\t var variation = 0.02;\n\t if (!this.isBoolean(this.humanize)) {\n\t variation = this.toSeconds(this.humanize);\n\t }\n\t time += (Math.random() * 2 - 1) * variation;\n\t }\n\t this.callback(time, this.value);\n\t }\n\t };\n\t /**\n\t\t * Get the duration of the loop.\n\t\t * @return {Ticks}\n\t\t * @private\n\t\t */\n\t Tone.Event.prototype._getLoopDuration = function () {\n\t return Math.round((this._loopEnd - this._loopStart) / this._playbackRate);\n\t };\n\t /**\n\t\t * If the note should loop or not\n\t\t * between Tone.Event.loopStart and \n\t\t * Tone.Event.loopEnd. An integer\n\t\t * value corresponds to the number of\n\t\t * loops the Event does after it starts.\n\t\t * @memberOf Tone.Event#\n\t\t * @type {Boolean|Positive}\n\t\t * @name loop\n\t\t */\n\t Object.defineProperty(Tone.Event.prototype, 'loop', {\n\t get: function () {\n\t return this._loop;\n\t },\n\t set: function (loop) {\n\t this._loop = loop;\n\t this._rescheduleEvents();\n\t }\n\t });\n\t /**\n\t\t * \tThe playback rate of the note. Defaults to 1.\n\t\t * @memberOf Tone.Event#\n\t\t * @type {Positive}\n\t\t * @name playbackRate\n\t\t * @example\n\t\t * note.loop = true;\n\t\t * //repeat the note twice as fast\n\t\t * note.playbackRate = 2;\n\t\t */\n\t Object.defineProperty(Tone.Event.prototype, 'playbackRate', {\n\t get: function () {\n\t return this._playbackRate;\n\t },\n\t set: function (rate) {\n\t this._playbackRate = rate;\n\t this._rescheduleEvents();\n\t }\n\t });\n\t /**\n\t\t * The loopEnd point is the time the event will loop\n\t\t * if Tone.Event.loop is true.\n\t\t * @memberOf Tone.Event#\n\t\t * @type {TransportTime}\n\t\t * @name loopEnd\n\t\t */\n\t Object.defineProperty(Tone.Event.prototype, 'loopEnd', {\n\t get: function () {\n\t return Tone.TransportTime(this._loopEnd, 'i').toNotation();\n\t },\n\t set: function (loopEnd) {\n\t this._loopEnd = this.toTicks(loopEnd);\n\t if (this._loop) {\n\t this._rescheduleEvents();\n\t }\n\t }\n\t });\n\t /**\n\t\t * The time when the loop should start. \n\t\t * @memberOf Tone.Event#\n\t\t * @type {TransportTime}\n\t\t * @name loopStart\n\t\t */\n\t Object.defineProperty(Tone.Event.prototype, 'loopStart', {\n\t get: function () {\n\t return Tone.TransportTime(this._loopStart, 'i').toNotation();\n\t },\n\t set: function (loopStart) {\n\t this._loopStart = this.toTicks(loopStart);\n\t if (this._loop) {\n\t this._rescheduleEvents();\n\t }\n\t }\n\t });\n\t /**\n\t\t * The current progress of the loop interval.\n\t\t * Returns 0 if the event is not started yet or\n\t\t * it is not set to loop.\n\t\t * @memberOf Tone.Event#\n\t\t * @type {NormalRange}\n\t\t * @name progress\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone.Event.prototype, 'progress', {\n\t get: function () {\n\t if (this._loop) {\n\t var ticks = Tone.Transport.ticks;\n\t var lastEvent = this._state.get(ticks);\n\t if (lastEvent !== null && lastEvent.state === Tone.State.Started) {\n\t var loopDuration = this._getLoopDuration();\n\t var progress = (ticks - lastEvent.time) % loopDuration;\n\t return progress / loopDuration;\n\t } else {\n\t return 0;\n\t }\n\t } else {\n\t return 0;\n\t }\n\t }\n\t });\n\t /**\n\t\t * Clean up\n\t\t * @return {Tone.Event} this\n\t\t */\n\t Tone.Event.prototype.dispose = function () {\n\t this.cancel();\n\t this._state.dispose();\n\t this._state = null;\n\t this.callback = null;\n\t this.value = null;\n\t };\n\t return Tone.Event;\n\t});\n\tModule(function (Tone) {\n\t /**\n\t\t * @class Tone.Loop creates a looped callback at the \n\t\t * specified interval. The callback can be \n\t\t * started, stopped and scheduled along\n\t\t * the Transport's timeline. \n\t\t * @example\n\t\t * var loop = new Tone.Loop(function(time){\n\t\t * \t//triggered every eighth note. \n\t\t * \tconsole.log(time);\n\t\t * }, \"8n\").start(0);\n\t\t * Tone.Transport.start();\n\t\t * @extends {Tone}\n\t\t * @param {Function} callback The callback to invoke with the event.\n\t\t * @param {Time} interval The time between successive callback calls. \n\t\t */\n\t Tone.Loop = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'callback',\n\t 'interval'\n\t ], Tone.Loop.defaults);\n\t /**\n\t\t\t * The event which produces the callbacks\n\t\t\t */\n\t this._event = new Tone.Event({\n\t 'callback': this._tick.bind(this),\n\t 'loop': true,\n\t 'loopEnd': options.interval,\n\t 'playbackRate': options.playbackRate,\n\t 'probability': options.probability\n\t });\n\t /**\n\t\t\t * The callback to invoke with the next event in the pattern\n\t\t\t * @type {Function}\n\t\t\t */\n\t this.callback = options.callback;\n\t //set the iterations\n\t this.iterations = options.iterations;\n\t };\n\t Tone.extend(Tone.Loop);\n\t /**\n\t\t * The defaults\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.Loop.defaults = {\n\t 'interval': '4n',\n\t 'callback': Tone.noOp,\n\t 'playbackRate': 1,\n\t 'iterations': Infinity,\n\t 'probability': true,\n\t 'mute': false\n\t };\n\t /**\n\t\t * Start the loop at the specified time along the Transport's\n\t\t * timeline.\n\t\t * @param {TimelinePosition=} time When to start the Loop.\n\t\t * @return {Tone.Loop} this\n\t\t */\n\t Tone.Loop.prototype.start = function (time) {\n\t this._event.start(time);\n\t return this;\n\t };\n\t /**\n\t\t * Stop the loop at the given time.\n\t\t * @param {TimelinePosition=} time When to stop the Arpeggio\n\t\t * @return {Tone.Loop} this\n\t\t */\n\t Tone.Loop.prototype.stop = function (time) {\n\t this._event.stop(time);\n\t return this;\n\t };\n\t /**\n\t\t * Cancel all scheduled events greater than or equal to the given time\n\t\t * @param {TimelinePosition} [time=0] The time after which events will be cancel.\n\t\t * @return {Tone.Loop} this\n\t\t */\n\t Tone.Loop.prototype.cancel = function (time) {\n\t this._event.cancel(time);\n\t return this;\n\t };\n\t /**\n\t\t * Internal function called when the notes should be called\n\t\t * @param {Number} time The time the event occurs\n\t\t * @private\n\t\t */\n\t Tone.Loop.prototype._tick = function (time) {\n\t this.callback(time);\n\t };\n\t /**\n\t\t * The state of the Loop, either started or stopped.\n\t\t * @memberOf Tone.Loop#\n\t\t * @type {String}\n\t\t * @name state\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone.Loop.prototype, 'state', {\n\t get: function () {\n\t return this._event.state;\n\t }\n\t });\n\t /**\n\t\t * The progress of the loop as a value between 0-1. 0, when\n\t\t * the loop is stopped or done iterating. \n\t\t * @memberOf Tone.Loop#\n\t\t * @type {NormalRange}\n\t\t * @name progress\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone.Loop.prototype, 'progress', {\n\t get: function () {\n\t return this._event.progress;\n\t }\n\t });\n\t /**\n\t\t * The time between successive callbacks. \n\t\t * @example\n\t\t * loop.interval = \"8n\"; //loop every 8n\n\t\t * @memberOf Tone.Loop#\n\t\t * @type {Time}\n\t\t * @name interval\n\t\t */\n\t Object.defineProperty(Tone.Loop.prototype, 'interval', {\n\t get: function () {\n\t return this._event.loopEnd;\n\t },\n\t set: function (interval) {\n\t this._event.loopEnd = interval;\n\t }\n\t });\n\t /**\n\t\t * The playback rate of the loop. The normal playback rate is 1 (no change). \n\t\t * A `playbackRate` of 2 would be twice as fast. \n\t\t * @memberOf Tone.Loop#\n\t\t * @type {Time}\n\t\t * @name playbackRate\n\t\t */\n\t Object.defineProperty(Tone.Loop.prototype, 'playbackRate', {\n\t get: function () {\n\t return this._event.playbackRate;\n\t },\n\t set: function (rate) {\n\t this._event.playbackRate = rate;\n\t }\n\t });\n\t /**\n\t\t * Random variation +/-0.01s to the scheduled time. \n\t\t * Or give it a time value which it will randomize by.\n\t\t * @type {Boolean|Time}\n\t\t * @memberOf Tone.Loop#\n\t\t * @name humanize\n\t\t */\n\t Object.defineProperty(Tone.Loop.prototype, 'humanize', {\n\t get: function () {\n\t return this._event.humanize;\n\t },\n\t set: function (variation) {\n\t this._event.humanize = variation;\n\t }\n\t });\n\t /**\n\t\t * The probably of the callback being invoked.\n\t\t * @memberOf Tone.Loop#\n\t\t * @type {NormalRange}\n\t\t * @name probability\n\t\t */\n\t Object.defineProperty(Tone.Loop.prototype, 'probability', {\n\t get: function () {\n\t return this._event.probability;\n\t },\n\t set: function (prob) {\n\t this._event.probability = prob;\n\t }\n\t });\n\t /**\n\t\t * Muting the Loop means that no callbacks are invoked.\n\t\t * @memberOf Tone.Loop#\n\t\t * @type {Boolean}\n\t\t * @name mute\n\t\t */\n\t Object.defineProperty(Tone.Loop.prototype, 'mute', {\n\t get: function () {\n\t return this._event.mute;\n\t },\n\t set: function (mute) {\n\t this._event.mute = mute;\n\t }\n\t });\n\t /**\n\t\t * The number of iterations of the loop. The default\n\t\t * value is Infinity (loop forever).\n\t\t * @memberOf Tone.Loop#\n\t\t * @type {Positive}\n\t\t * @name iterations\n\t\t */\n\t Object.defineProperty(Tone.Loop.prototype, 'iterations', {\n\t get: function () {\n\t if (this._event.loop === true) {\n\t return Infinity;\n\t } else {\n\t return this._event.loop;\n\t }\n\t return this._pattern.index;\n\t },\n\t set: function (iters) {\n\t if (iters === Infinity) {\n\t this._event.loop = true;\n\t } else {\n\t this._event.loop = iters;\n\t }\n\t }\n\t });\n\t /**\n\t\t * Clean up\n\t\t * @return {Tone.Loop} this\n\t\t */\n\t Tone.Loop.prototype.dispose = function () {\n\t this._event.dispose();\n\t this._event = null;\n\t this.callback = null;\n\t };\n\t return Tone.Loop;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Part is a collection Tone.Events which can be\n\t\t * started/stoped and looped as a single unit.\n\t\t *\n\t\t * @extends {Tone.Event}\n\t\t * @param {Function} callback The callback to invoke on each event\n\t\t * @param {Array} events the array of events\n\t\t * @example\n\t\t * var part = new Tone.Part(function(time, note){\n\t\t * \t//the notes given as the second element in the array\n\t\t * \t//will be passed in as the second argument\n\t\t * \tsynth.triggerAttackRelease(note, \"8n\", time);\n\t\t * }, [[0, \"C2\"], [\"0:2\", \"C3\"], [\"0:3:2\", \"G2\"]]);\n\t\t * @example\n\t\t * //use an array of objects as long as the object has a \"time\" attribute\n\t\t * var part = new Tone.Part(function(time, value){\n\t\t * \t//the value is an object which contains both the note and the velocity\n\t\t * \tsynth.triggerAttackRelease(value.note, \"8n\", time, value.velocity);\n\t\t * }, [{\"time\" : 0, \"note\" : \"C3\", \"velocity\": 0.9}, \n\t\t * \t {\"time\" : \"0:2\", \"note\" : \"C4\", \"velocity\": 0.5}\n\t\t * ]).start(0);\n\t\t */\n\t Tone.Part = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'callback',\n\t 'events'\n\t ], Tone.Part.defaults);\n\t /**\n\t\t\t * If the part is looping or not\n\t\t\t * @type {Boolean|Positive}\n\t\t\t * @private\n\t\t\t */\n\t this._loop = options.loop;\n\t /**\n\t\t\t * When the note is scheduled to start.\n\t\t\t * @type {Ticks}\n\t\t\t * @private\n\t\t\t */\n\t this._loopStart = this.toTicks(options.loopStart);\n\t /**\n\t\t\t * When the note is scheduled to start.\n\t\t\t * @type {Ticks}\n\t\t\t * @private\n\t\t\t */\n\t this._loopEnd = this.toTicks(options.loopEnd);\n\t /**\n\t\t\t * The playback rate of the part\n\t\t\t * @type {Positive}\n\t\t\t * @private\n\t\t\t */\n\t this._playbackRate = options.playbackRate;\n\t /**\n\t\t\t * private holder of probability value\n\t\t\t * @type {NormalRange}\n\t\t\t * @private\n\t\t\t */\n\t this._probability = options.probability;\n\t /**\n\t\t\t * the amount of variation from the\n\t\t\t * given time. \n\t\t\t * @type {Boolean|Time}\n\t\t\t * @private\n\t\t\t */\n\t this._humanize = options.humanize;\n\t /**\n\t\t\t * The start offset\n\t\t\t * @type {Ticks}\n\t\t\t * @private\n\t\t\t */\n\t this._startOffset = 0;\n\t /**\n\t\t\t * Keeps track of the current state\n\t\t\t * @type {Tone.TimelineState}\n\t\t\t * @private\n\t\t\t */\n\t this._state = new Tone.TimelineState(Tone.State.Stopped);\n\t /**\n\t\t\t * An array of Objects. \n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._events = [];\n\t /**\n\t\t\t * The callback to invoke at all the scheduled events.\n\t\t\t * @type {Function}\n\t\t\t */\n\t this.callback = options.callback;\n\t /**\n\t\t\t * If mute is true, the callback won't be\n\t\t\t * invoked.\n\t\t\t * @type {Boolean}\n\t\t\t */\n\t this.mute = options.mute;\n\t //add the events\n\t var events = this.defaultArg(options.events, []);\n\t if (!this.isUndef(options.events)) {\n\t for (var i = 0; i < events.length; i++) {\n\t if (Array.isArray(events[i])) {\n\t this.add(events[i][0], events[i][1]);\n\t } else {\n\t this.add(events[i]);\n\t }\n\t }\n\t }\n\t };\n\t Tone.extend(Tone.Part, Tone.Event);\n\t /**\n\t\t * The default values\n\t\t * @type {Object}\n\t\t * @const\n\t\t */\n\t Tone.Part.defaults = {\n\t 'callback': Tone.noOp,\n\t 'loop': false,\n\t 'loopEnd': '1m',\n\t 'loopStart': 0,\n\t 'playbackRate': 1,\n\t 'probability': 1,\n\t 'humanize': false,\n\t 'mute': false\n\t };\n\t /**\n\t\t * Start the part at the given time. \n\t\t * @param {TransportTime} time When to start the part.\n\t\t * @param {Time=} offset The offset from the start of the part\n\t\t * to begin playing at.\n\t\t * @return {Tone.Part} this\n\t\t */\n\t Tone.Part.prototype.start = function (time, offset) {\n\t var ticks = this.toTicks(time);\n\t if (this._state.getValueAtTime(ticks) !== Tone.State.Started) {\n\t if (this._loop) {\n\t offset = this.defaultArg(offset, this._loopStart);\n\t } else {\n\t offset = this.defaultArg(offset, 0);\n\t }\n\t offset = this.toTicks(offset);\n\t this._state.add({\n\t 'state': Tone.State.Started,\n\t 'time': ticks,\n\t 'offset': offset\n\t });\n\t this._forEach(function (event) {\n\t this._startNote(event, ticks, offset);\n\t });\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Start the event in the given event at the correct time given\n\t\t * the ticks and offset and looping.\n\t\t * @param {Tone.Event} event \n\t\t * @param {Ticks} ticks\n\t\t * @param {Ticks} offset\n\t\t * @private\n\t\t */\n\t Tone.Part.prototype._startNote = function (event, ticks, offset) {\n\t ticks -= offset;\n\t if (this._loop) {\n\t if (event.startOffset >= this._loopStart && event.startOffset < this._loopEnd) {\n\t if (event.startOffset < offset) {\n\t //start it on the next loop\n\t ticks += this._getLoopDuration();\n\t }\n\t event.start(Tone.TransportTime(ticks, 'i'));\n\t } else if (event.startOffset < this._loopStart && event.startOffset >= offset) {\n\t event.loop = false;\n\t event.start(Tone.TransportTime(ticks, 'i'));\n\t }\n\t } else {\n\t if (event.startOffset >= offset) {\n\t event.start(Tone.TransportTime(ticks, 'i'));\n\t }\n\t }\n\t };\n\t /**\n\t\t * The start from the scheduled start time\n\t\t * @type {Ticks}\n\t\t * @memberOf Tone.Part#\n\t\t * @name startOffset\n\t\t * @private\n\t\t */\n\t Object.defineProperty(Tone.Part.prototype, 'startOffset', {\n\t get: function () {\n\t return this._startOffset;\n\t },\n\t set: function (offset) {\n\t this._startOffset = offset;\n\t this._forEach(function (event) {\n\t event.startOffset += this._startOffset;\n\t });\n\t }\n\t });\n\t /**\n\t\t * Stop the part at the given time.\n\t\t * @param {TimelinePosition} time When to stop the part.\n\t\t * @return {Tone.Part} this\n\t\t */\n\t Tone.Part.prototype.stop = function (time) {\n\t var ticks = this.toTicks(time);\n\t this._state.cancel(ticks);\n\t this._state.setStateAtTime(Tone.State.Stopped, ticks);\n\t this._forEach(function (event) {\n\t event.stop(time);\n\t });\n\t return this;\n\t };\n\t /**\n\t\t * Get/Set an Event's value at the given time. \n\t\t * If a value is passed in and no event exists at\n\t\t * the given time, one will be created with that value. \n\t\t * If two events are at the same time, the first one will\n\t\t * be returned.\n\t\t * @example\n\t\t * part.at(\"1m\"); //returns the part at the first measure\n\t\t *\n\t\t * part.at(\"2m\", \"C2\"); //set the value at \"2m\" to C2. \n\t\t * //if an event didn't exist at that time, it will be created.\n\t\t * @param {TransportTime} time The time of the event to get or set.\n\t\t * @param {*=} value If a value is passed in, the value of the\n\t\t * event at the given time will be set to it.\n\t\t * @return {Tone.Event} the event at the time\n\t\t */\n\t Tone.Part.prototype.at = function (time, value) {\n\t time = Tone.TransportTime(time);\n\t var tickTime = Tone.Time(1, 'i').toSeconds();\n\t for (var i = 0; i < this._events.length; i++) {\n\t var event = this._events[i];\n\t if (Math.abs(time.toTicks() - event.startOffset) < tickTime) {\n\t if (!this.isUndef(value)) {\n\t event.value = value;\n\t }\n\t return event;\n\t }\n\t }\n\t //if there was no event at that time, create one\n\t if (!this.isUndef(value)) {\n\t this.add(time, value);\n\t //return the new event\n\t return this._events[this._events.length - 1];\n\t } else {\n\t return null;\n\t }\n\t };\n\t /**\n\t\t * Add a an event to the part. \n\t\t * @param {Time} time The time the note should start.\n\t\t * If an object is passed in, it should\n\t\t * have a 'time' attribute and the rest\n\t\t * of the object will be used as the 'value'.\n\t\t * @param {Tone.Event|*} value \n\t\t * @returns {Tone.Part} this\n\t\t * @example\n\t\t * part.add(\"1m\", \"C#+11\");\n\t\t */\n\t Tone.Part.prototype.add = function (time, value) {\n\t //extract the parameters\n\t if (time.hasOwnProperty('time')) {\n\t value = time;\n\t time = value.time;\n\t }\n\t time = this.toTicks(time);\n\t var event;\n\t if (value instanceof Tone.Event) {\n\t event = value;\n\t event.callback = this._tick.bind(this);\n\t } else {\n\t event = new Tone.Event({\n\t 'callback': this._tick.bind(this),\n\t 'value': value\n\t });\n\t }\n\t //the start offset\n\t event.startOffset = time;\n\t //initialize the values\n\t event.set({\n\t 'loopEnd': this.loopEnd,\n\t 'loopStart': this.loopStart,\n\t 'loop': this.loop,\n\t 'humanize': this.humanize,\n\t 'playbackRate': this.playbackRate,\n\t 'probability': this.probability\n\t });\n\t this._events.push(event);\n\t //start the note if it should be played right now\n\t this._restartEvent(event);\n\t return this;\n\t };\n\t /**\n\t\t * Restart the given event\n\t\t * @param {Tone.Event} event \n\t\t * @private\n\t\t */\n\t Tone.Part.prototype._restartEvent = function (event) {\n\t this._state.forEach(function (stateEvent) {\n\t if (stateEvent.state === Tone.State.Started) {\n\t this._startNote(event, stateEvent.time, stateEvent.offset);\n\t } else {\n\t //stop the note\n\t event.stop(Tone.TransportTime(stateEvent.time, 'i'));\n\t }\n\t }.bind(this));\n\t };\n\t /**\n\t\t * Remove an event from the part. Will recursively iterate\n\t\t * into nested parts to find the event.\n\t\t * @param {Time} time The time of the event\n\t\t * @param {*} value Optionally select only a specific event value\n\t\t * @return {Tone.Part} this\n\t\t */\n\t Tone.Part.prototype.remove = function (time, value) {\n\t //extract the parameters\n\t if (time.hasOwnProperty('time')) {\n\t value = time;\n\t time = value.time;\n\t }\n\t time = this.toTicks(time);\n\t for (var i = this._events.length - 1; i >= 0; i--) {\n\t var event = this._events[i];\n\t if (event instanceof Tone.Part) {\n\t event.remove(time, value);\n\t } else {\n\t if (event.startOffset === time) {\n\t if (this.isUndef(value) || !this.isUndef(value) && event.value === value) {\n\t this._events.splice(i, 1);\n\t event.dispose();\n\t }\n\t }\n\t }\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Remove all of the notes from the group. \n\t\t * @return {Tone.Part} this\n\t\t */\n\t Tone.Part.prototype.removeAll = function () {\n\t this._forEach(function (event) {\n\t event.dispose();\n\t });\n\t this._events = [];\n\t return this;\n\t };\n\t /**\n\t\t * Cancel scheduled state change events: i.e. \"start\" and \"stop\".\n\t\t * @param {TimelinePosition} after The time after which to cancel the scheduled events.\n\t\t * @return {Tone.Part} this\n\t\t */\n\t Tone.Part.prototype.cancel = function (after) {\n\t after = this.toTicks(after);\n\t this._forEach(function (event) {\n\t event.cancel(after);\n\t });\n\t this._state.cancel(after);\n\t return this;\n\t };\n\t /**\n\t\t * Iterate over all of the events\n\t\t * @param {Function} callback\n\t\t * @param {Object} ctx The context\n\t\t * @private\n\t\t */\n\t Tone.Part.prototype._forEach = function (callback, ctx) {\n\t ctx = this.defaultArg(ctx, this);\n\t for (var i = this._events.length - 1; i >= 0; i--) {\n\t var e = this._events[i];\n\t if (e instanceof Tone.Part) {\n\t e._forEach(callback, ctx);\n\t } else {\n\t callback.call(ctx, e);\n\t }\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Set the attribute of all of the events\n\t\t * @param {String} attr the attribute to set\n\t\t * @param {*} value The value to set it to\n\t\t * @private\n\t\t */\n\t Tone.Part.prototype._setAll = function (attr, value) {\n\t this._forEach(function (event) {\n\t event[attr] = value;\n\t });\n\t };\n\t /**\n\t\t * Internal tick method\n\t\t * @param {Number} time The time of the event in seconds\n\t\t * @private\n\t\t */\n\t Tone.Part.prototype._tick = function (time, value) {\n\t if (!this.mute) {\n\t this.callback(time, value);\n\t }\n\t };\n\t /**\n\t\t * Determine if the event should be currently looping\n\t\t * given the loop boundries of this Part.\n\t\t * @param {Tone.Event} event The event to test\n\t\t * @private\n\t\t */\n\t Tone.Part.prototype._testLoopBoundries = function (event) {\n\t if (event.startOffset < this._loopStart || event.startOffset >= this._loopEnd) {\n\t event.cancel(0);\n\t } else {\n\t //reschedule it if it's stopped\n\t if (event.state === Tone.State.Stopped) {\n\t this._restartEvent(event);\n\t }\n\t }\n\t };\n\t /**\n\t\t * The probability of the notes being triggered.\n\t\t * @memberOf Tone.Part#\n\t\t * @type {NormalRange}\n\t\t * @name probability\n\t\t */\n\t Object.defineProperty(Tone.Part.prototype, 'probability', {\n\t get: function () {\n\t return this._probability;\n\t },\n\t set: function (prob) {\n\t this._probability = prob;\n\t this._setAll('probability', prob);\n\t }\n\t });\n\t /**\n\t\t * If set to true, will apply small random variation\n\t\t * to the callback time. If the value is given as a time, it will randomize\n\t\t * by that amount.\n\t\t * @example\n\t\t * event.humanize = true;\n\t\t * @type {Boolean|Time}\n\t\t * @name humanize\n\t\t */\n\t Object.defineProperty(Tone.Part.prototype, 'humanize', {\n\t get: function () {\n\t return this._humanize;\n\t },\n\t set: function (variation) {\n\t this._humanize = variation;\n\t this._setAll('humanize', variation);\n\t }\n\t });\n\t /**\n\t\t * If the part should loop or not\n\t\t * between Tone.Part.loopStart and \n\t\t * Tone.Part.loopEnd. An integer\n\t\t * value corresponds to the number of\n\t\t * loops the Part does after it starts.\n\t\t * @memberOf Tone.Part#\n\t\t * @type {Boolean|Positive}\n\t\t * @name loop\n\t\t * @example\n\t\t * //loop the part 8 times\n\t\t * part.loop = 8;\n\t\t */\n\t Object.defineProperty(Tone.Part.prototype, 'loop', {\n\t get: function () {\n\t return this._loop;\n\t },\n\t set: function (loop) {\n\t this._loop = loop;\n\t this._forEach(function (event) {\n\t event._loopStart = this._loopStart;\n\t event._loopEnd = this._loopEnd;\n\t event.loop = loop;\n\t this._testLoopBoundries(event);\n\t });\n\t }\n\t });\n\t /**\n\t\t * The loopEnd point determines when it will \n\t\t * loop if Tone.Part.loop is true.\n\t\t * @memberOf Tone.Part#\n\t\t * @type {TransportTime}\n\t\t * @name loopEnd\n\t\t */\n\t Object.defineProperty(Tone.Part.prototype, 'loopEnd', {\n\t get: function () {\n\t return Tone.TransportTime(this._loopEnd, 'i').toNotation();\n\t },\n\t set: function (loopEnd) {\n\t this._loopEnd = this.toTicks(loopEnd);\n\t if (this._loop) {\n\t this._forEach(function (event) {\n\t event.loopEnd = loopEnd;\n\t this._testLoopBoundries(event);\n\t });\n\t }\n\t }\n\t });\n\t /**\n\t\t * The loopStart point determines when it will \n\t\t * loop if Tone.Part.loop is true.\n\t\t * @memberOf Tone.Part#\n\t\t * @type {TransportTime}\n\t\t * @name loopStart\n\t\t */\n\t Object.defineProperty(Tone.Part.prototype, 'loopStart', {\n\t get: function () {\n\t return Tone.TransportTime(this._loopStart, 'i').toNotation();\n\t },\n\t set: function (loopStart) {\n\t this._loopStart = this.toTicks(loopStart);\n\t if (this._loop) {\n\t this._forEach(function (event) {\n\t event.loopStart = this.loopStart;\n\t this._testLoopBoundries(event);\n\t });\n\t }\n\t }\n\t });\n\t /**\n\t\t * \tThe playback rate of the part\n\t\t * @memberOf Tone.Part#\n\t\t * @type {Positive}\n\t\t * @name playbackRate\n\t\t */\n\t Object.defineProperty(Tone.Part.prototype, 'playbackRate', {\n\t get: function () {\n\t return this._playbackRate;\n\t },\n\t set: function (rate) {\n\t this._playbackRate = rate;\n\t this._setAll('playbackRate', rate);\n\t }\n\t });\n\t /**\n\t\t * \tThe number of scheduled notes in the part. \n\t\t * @memberOf Tone.Part#\n\t\t * @type {Positive}\n\t\t * @name length\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone.Part.prototype, 'length', {\n\t get: function () {\n\t return this._events.length;\n\t }\n\t });\n\t /**\n\t\t * Clean up\n\t\t * @return {Tone.Part} this\n\t\t */\n\t Tone.Part.prototype.dispose = function () {\n\t this.removeAll();\n\t this._state.dispose();\n\t this._state = null;\n\t this.callback = null;\n\t this._events = null;\n\t return this;\n\t };\n\t return Tone.Part;\n\t});\n\tModule(function (Tone) {\n\t /**\n\t\t * @class Tone.Pattern arpeggiates between the given notes\n\t\t * in a number of patterns. See Tone.CtrlPattern for\n\t\t * a full list of patterns.\n\t\t * @example\n\t\t * var pattern = new Tone.Pattern(function(time, note){\n\t\t * //the order of the notes passed in depends on the pattern\n\t\t * }, [\"C2\", \"D4\", \"E5\", \"A6\"], \"upDown\");\n\t\t * @extends {Tone.Loop}\n\t\t * @param {Function} callback The callback to invoke with the\n\t\t * event.\n\t\t * @param {Array} values The values to arpeggiate over.\n\t\t */\n\t Tone.Pattern = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'callback',\n\t 'values',\n\t 'pattern'\n\t ], Tone.Pattern.defaults);\n\t Tone.Loop.call(this, options);\n\t /**\n\t\t\t * The pattern manager\n\t\t\t * @type {Tone.CtrlPattern}\n\t\t\t * @private\n\t\t\t */\n\t this._pattern = new Tone.CtrlPattern({\n\t 'values': options.values,\n\t 'type': options.pattern,\n\t 'index': options.index\n\t });\n\t };\n\t Tone.extend(Tone.Pattern, Tone.Loop);\n\t /**\n\t\t * The defaults\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.Pattern.defaults = {\n\t 'pattern': Tone.CtrlPattern.Type.Up,\n\t 'values': []\n\t };\n\t /**\n\t\t * Internal function called when the notes should be called\n\t\t * @param {Number} time The time the event occurs\n\t\t * @private\n\t\t */\n\t Tone.Pattern.prototype._tick = function (time) {\n\t this.callback(time, this._pattern.value);\n\t this._pattern.next();\n\t };\n\t /**\n\t\t * The current index in the values array.\n\t\t * @memberOf Tone.Pattern#\n\t\t * @type {Positive}\n\t\t * @name index\n\t\t */\n\t Object.defineProperty(Tone.Pattern.prototype, 'index', {\n\t get: function () {\n\t return this._pattern.index;\n\t },\n\t set: function (i) {\n\t this._pattern.index = i;\n\t }\n\t });\n\t /**\n\t\t * The array of events.\n\t\t * @memberOf Tone.Pattern#\n\t\t * @type {Array}\n\t\t * @name values\n\t\t */\n\t Object.defineProperty(Tone.Pattern.prototype, 'values', {\n\t get: function () {\n\t return this._pattern.values;\n\t },\n\t set: function (vals) {\n\t this._pattern.values = vals;\n\t }\n\t });\n\t /**\n\t\t * The current value of the pattern.\n\t\t * @memberOf Tone.Pattern#\n\t\t * @type {*}\n\t\t * @name value\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone.Pattern.prototype, 'value', {\n\t get: function () {\n\t return this._pattern.value;\n\t }\n\t });\n\t /**\n\t\t * The pattern type. See Tone.CtrlPattern for the full list of patterns.\n\t\t * @memberOf Tone.Pattern#\n\t\t * @type {String}\n\t\t * @name pattern\n\t\t */\n\t Object.defineProperty(Tone.Pattern.prototype, 'pattern', {\n\t get: function () {\n\t return this._pattern.type;\n\t },\n\t set: function (pattern) {\n\t this._pattern.type = pattern;\n\t }\n\t });\n\t /**\n\t\t * Clean up\n\t\t * @return {Tone.Pattern} this\n\t\t */\n\t Tone.Pattern.prototype.dispose = function () {\n\t Tone.Loop.prototype.dispose.call(this);\n\t this._pattern.dispose();\n\t this._pattern = null;\n\t };\n\t return Tone.Pattern;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class A sequence is an alternate notation of a part. Instead\n\t\t * of passing in an array of [time, event] pairs, pass\n\t\t * in an array of events which will be spaced at the\n\t\t * given subdivision. Sub-arrays will subdivide that beat\n\t\t * by the number of items are in the array. \n\t\t * Sequence notation inspiration from [Tidal](http://yaxu.org/tidal/)\n\t\t * @param {Function} callback The callback to invoke with every note\n\t\t * @param {Array} events The sequence\n\t\t * @param {Time} subdivision The subdivision between which events are placed. \n\t\t * @extends {Tone.Part}\n\t\t * @example\n\t\t * var seq = new Tone.Sequence(function(time, note){\n\t\t * \tconsole.log(note);\n\t\t * //straight quater notes\n\t\t * }, [\"C4\", \"E4\", \"G4\", \"A4\"], \"4n\");\n\t\t * @example\n\t\t * var seq = new Tone.Sequence(function(time, note){\n\t\t * \tconsole.log(note);\n\t\t * //subdivisions are given as subarrays\n\t\t * }, [\"C4\", [\"E4\", \"D4\", \"E4\"], \"G4\", [\"A4\", \"G4\"]]);\n\t\t */\n\t Tone.Sequence = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'callback',\n\t 'events',\n\t 'subdivision'\n\t ], Tone.Sequence.defaults);\n\t //remove the events\n\t var events = options.events;\n\t delete options.events;\n\t Tone.Part.call(this, options);\n\t /**\n\t\t\t * The subdivison of each note\n\t\t\t * @type {Ticks}\n\t\t\t * @private\n\t\t\t */\n\t this._subdivision = this.toTicks(options.subdivision);\n\t //if no time was passed in, the loop end is the end of the cycle\n\t if (this.isUndef(options.loopEnd) && !this.isUndef(events)) {\n\t this._loopEnd = events.length * this._subdivision;\n\t }\n\t //defaults to looping\n\t this._loop = true;\n\t //add all of the events\n\t if (!this.isUndef(events)) {\n\t for (var i = 0; i < events.length; i++) {\n\t this.add(i, events[i]);\n\t }\n\t }\n\t };\n\t Tone.extend(Tone.Sequence, Tone.Part);\n\t /**\n\t\t * The default values.\n\t\t * @type {Object}\n\t\t */\n\t Tone.Sequence.defaults = { 'subdivision': '4n' };\n\t /**\n\t\t * The subdivision of the sequence. This can only be \n\t\t * set in the constructor. The subdivision is the \n\t\t * interval between successive steps. \n\t\t * @type {Time}\n\t\t * @memberOf Tone.Sequence#\n\t\t * @name subdivision\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone.Sequence.prototype, 'subdivision', {\n\t get: function () {\n\t return Tone.Time(this._subdivision, 'i').toNotation();\n\t }\n\t });\n\t /**\n\t\t * Get/Set an index of the sequence. If the index contains a subarray, \n\t\t * a Tone.Sequence representing that sub-array will be returned. \n\t\t * @example\n\t\t * var sequence = new Tone.Sequence(playNote, [\"E4\", \"C4\", \"F#4\", [\"A4\", \"Bb3\"]])\n\t\t * sequence.at(0)// => returns \"E4\"\n\t\t * //set a value\n\t\t * sequence.at(0, \"G3\");\n\t\t * //get a nested sequence\n\t\t * sequence.at(3).at(1)// => returns \"Bb3\"\n\t\t * @param {Positive} index The index to get or set\n\t\t * @param {*} value Optionally pass in the value to set at the given index.\n\t\t */\n\t Tone.Sequence.prototype.at = function (index, value) {\n\t //if the value is an array, \n\t if (this.isArray(value)) {\n\t //remove the current event at that index\n\t this.remove(index);\n\t }\n\t //call the parent's method\n\t return Tone.Part.prototype.at.call(this, this._indexTime(index), value);\n\t };\n\t /**\n\t\t * Add an event at an index, if there's already something\n\t\t * at that index, overwrite it. If `value` is an array, \n\t\t * it will be parsed as a subsequence.\n\t\t * @param {Number} index The index to add the event to\n\t\t * @param {*} value The value to add at that index\n\t\t * @returns {Tone.Sequence} this\n\t\t */\n\t Tone.Sequence.prototype.add = function (index, value) {\n\t if (value === null) {\n\t return this;\n\t }\n\t if (this.isArray(value)) {\n\t //make a subsequence and add that to the sequence\n\t var subSubdivision = Math.round(this._subdivision / value.length);\n\t value = new Tone.Sequence(this._tick.bind(this), value, Tone.Time(subSubdivision, 'i'));\n\t }\n\t Tone.Part.prototype.add.call(this, this._indexTime(index), value);\n\t return this;\n\t };\n\t /**\n\t\t * Remove a value from the sequence by index\n\t\t * @param {Number} index The index of the event to remove\n\t\t * @returns {Tone.Sequence} this\n\t\t */\n\t Tone.Sequence.prototype.remove = function (index, value) {\n\t Tone.Part.prototype.remove.call(this, this._indexTime(index), value);\n\t return this;\n\t };\n\t /**\n\t\t * Get the time of the index given the Sequence's subdivision\n\t\t * @param {Number} index \n\t\t * @return {Time} The time of that index\n\t\t * @private\n\t\t */\n\t Tone.Sequence.prototype._indexTime = function (index) {\n\t if (index instanceof Tone.TransportTime) {\n\t return index;\n\t } else {\n\t return Tone.TransportTime(index * this._subdivision + this.startOffset, 'i');\n\t }\n\t };\n\t /**\n\t\t * Clean up.\n\t\t * @return {Tone.Sequence} this\n\t\t */\n\t Tone.Sequence.prototype.dispose = function () {\n\t Tone.Part.prototype.dispose.call(this);\n\t return this;\n\t };\n\t return Tone.Sequence;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.PulseOscillator is a pulse oscillator with control over pulse width,\n\t\t * also known as the duty cycle. At 50% duty cycle (width = 0.5) the wave is \n\t\t * a square and only odd-numbered harmonics are present. At all other widths \n\t\t * even-numbered harmonics are present. Read more \n\t\t * [here](https://wigglewave.wordpress.com/2014/08/16/pulse-waveforms-and-harmonics/).\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.Oscillator}\n\t\t * @param {Frequency} [frequency] The frequency of the oscillator\n\t\t * @param {NormalRange} [width] The width of the pulse\n\t\t * @example\n\t\t * var pulse = new Tone.PulseOscillator(\"E5\", 0.4).toMaster().start();\n\t\t */\n\t Tone.PulseOscillator = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'frequency',\n\t 'width'\n\t ], Tone.Oscillator.defaults);\n\t Tone.Source.call(this, options);\n\t /**\n\t\t\t * The width of the pulse. \n\t\t\t * @type {NormalRange}\n\t\t\t * @signal\n\t\t\t */\n\t this.width = new Tone.Signal(options.width, Tone.Type.NormalRange);\n\t /**\n\t\t\t * gate the width amount\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this._widthGate = new Tone.Gain();\n\t /**\n\t\t\t * the sawtooth oscillator\n\t\t\t * @type {Tone.Oscillator}\n\t\t\t * @private\n\t\t\t */\n\t this._sawtooth = new Tone.Oscillator({\n\t frequency: options.frequency,\n\t detune: options.detune,\n\t type: 'sawtooth',\n\t phase: options.phase\n\t });\n\t /**\n\t\t\t * The frequency control.\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.frequency = this._sawtooth.frequency;\n\t /**\n\t\t\t * The detune in cents. \n\t\t\t * @type {Cents}\n\t\t\t * @signal\n\t\t\t */\n\t this.detune = this._sawtooth.detune;\n\t /**\n\t\t\t * Threshold the signal to turn it into a square\n\t\t\t * @type {Tone.WaveShaper}\n\t\t\t * @private\n\t\t\t */\n\t this._thresh = new Tone.WaveShaper(function (val) {\n\t if (val < 0) {\n\t return -1;\n\t } else {\n\t return 1;\n\t }\n\t });\n\t //connections\n\t this._sawtooth.chain(this._thresh, this.output);\n\t this.width.chain(this._widthGate, this._thresh);\n\t this._readOnly([\n\t 'width',\n\t 'frequency',\n\t 'detune'\n\t ]);\n\t };\n\t Tone.extend(Tone.PulseOscillator, Tone.Oscillator);\n\t /**\n\t\t * The default parameters.\n\t\t * @static\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.PulseOscillator.defaults = {\n\t 'frequency': 440,\n\t 'detune': 0,\n\t 'phase': 0,\n\t 'width': 0.2\n\t };\n\t /**\n\t\t * start the oscillator\n\t\t * @param {Time} time \n\t\t * @private\n\t\t */\n\t Tone.PulseOscillator.prototype._start = function (time) {\n\t time = this.toSeconds(time);\n\t this._sawtooth.start(time);\n\t this._widthGate.gain.setValueAtTime(1, time);\n\t };\n\t /**\n\t\t * stop the oscillator\n\t\t * @param {Time} time \n\t\t * @private\n\t\t */\n\t Tone.PulseOscillator.prototype._stop = function (time) {\n\t time = this.toSeconds(time);\n\t this._sawtooth.stop(time);\n\t //the width is still connected to the output. \n\t //that needs to be stopped also\n\t this._widthGate.gain.setValueAtTime(0, time);\n\t };\n\t /**\n\t\t * The phase of the oscillator in degrees.\n\t\t * @memberOf Tone.PulseOscillator#\n\t\t * @type {Degrees}\n\t\t * @name phase\n\t\t */\n\t Object.defineProperty(Tone.PulseOscillator.prototype, 'phase', {\n\t get: function () {\n\t return this._sawtooth.phase;\n\t },\n\t set: function (phase) {\n\t this._sawtooth.phase = phase;\n\t }\n\t });\n\t /**\n\t\t * The type of the oscillator. Always returns \"pulse\".\n\t\t * @readOnly\n\t\t * @memberOf Tone.PulseOscillator#\n\t\t * @type {string}\n\t\t * @name type\n\t\t */\n\t Object.defineProperty(Tone.PulseOscillator.prototype, 'type', {\n\t get: function () {\n\t return 'pulse';\n\t }\n\t });\n\t /**\n\t\t * The partials of the waveform. Cannot set partials for this waveform type\n\t\t * @memberOf Tone.PulseOscillator#\n\t\t * @type {Array}\n\t\t * @name partials\n\t\t * @private\n\t\t */\n\t Object.defineProperty(Tone.PulseOscillator.prototype, 'partials', {\n\t get: function () {\n\t return [];\n\t }\n\t });\n\t /**\n\t\t * Clean up method.\n\t\t * @return {Tone.PulseOscillator} this\n\t\t */\n\t Tone.PulseOscillator.prototype.dispose = function () {\n\t Tone.Source.prototype.dispose.call(this);\n\t this._sawtooth.dispose();\n\t this._sawtooth = null;\n\t this._writable([\n\t 'width',\n\t 'frequency',\n\t 'detune'\n\t ]);\n\t this.width.dispose();\n\t this.width = null;\n\t this._widthGate.dispose();\n\t this._widthGate = null;\n\t this._thresh.dispose();\n\t this._thresh = null;\n\t this.frequency = null;\n\t this.detune = null;\n\t return this;\n\t };\n\t return Tone.PulseOscillator;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.PWMOscillator modulates the width of a Tone.PulseOscillator \n\t\t * at the modulationFrequency. This has the effect of continuously\n\t\t * changing the timbre of the oscillator by altering the harmonics \n\t\t * generated.\n\t\t *\n\t\t * @extends {Tone.Oscillator}\n\t\t * @constructor\n\t\t * @param {Frequency} frequency The starting frequency of the oscillator. \n\t\t * @param {Frequency} modulationFrequency The modulation frequency of the width of the pulse. \n\t\t * @example\n\t\t * var pwm = new Tone.PWMOscillator(\"Ab3\", 0.3).toMaster().start();\n\t\t */\n\t Tone.PWMOscillator = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'frequency',\n\t 'modulationFrequency'\n\t ], Tone.PWMOscillator.defaults);\n\t Tone.Source.call(this, options);\n\t /**\n\t\t\t * the pulse oscillator\n\t\t\t * @type {Tone.PulseOscillator}\n\t\t\t * @private\n\t\t\t */\n\t this._pulse = new Tone.PulseOscillator(options.modulationFrequency);\n\t //change the pulse oscillator type\n\t this._pulse._sawtooth.type = 'sine';\n\t /**\n\t\t\t * the modulator\n\t\t\t * @type {Tone.Oscillator}\n\t\t\t * @private\n\t\t\t */\n\t this._modulator = new Tone.Oscillator({\n\t 'frequency': options.frequency,\n\t 'detune': options.detune,\n\t 'phase': options.phase\n\t });\n\t /**\n\t\t\t * Scale the oscillator so it doesn't go silent \n\t\t\t * at the extreme values.\n\t\t\t * @type {Tone.Multiply}\n\t\t\t * @private\n\t\t\t */\n\t this._scale = new Tone.Multiply(2);\n\t /**\n\t\t\t * The frequency control.\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.frequency = this._modulator.frequency;\n\t /**\n\t\t\t * The detune of the oscillator.\n\t\t\t * @type {Cents}\n\t\t\t * @signal\n\t\t\t */\n\t this.detune = this._modulator.detune;\n\t /**\n\t\t\t * The modulation rate of the oscillator. \n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.modulationFrequency = this._pulse.frequency;\n\t //connections\n\t this._modulator.chain(this._scale, this._pulse.width);\n\t this._pulse.connect(this.output);\n\t this._readOnly([\n\t 'modulationFrequency',\n\t 'frequency',\n\t 'detune'\n\t ]);\n\t };\n\t Tone.extend(Tone.PWMOscillator, Tone.Oscillator);\n\t /**\n\t\t * default values\n\t\t * @static\n\t\t * @type {Object}\n\t\t * @const\n\t\t */\n\t Tone.PWMOscillator.defaults = {\n\t 'frequency': 440,\n\t 'detune': 0,\n\t 'phase': 0,\n\t 'modulationFrequency': 0.4\n\t };\n\t /**\n\t\t * start the oscillator\n\t\t * @param {Time} [time=now]\n\t\t * @private\n\t\t */\n\t Tone.PWMOscillator.prototype._start = function (time) {\n\t time = this.toSeconds(time);\n\t this._modulator.start(time);\n\t this._pulse.start(time);\n\t };\n\t /**\n\t\t * stop the oscillator\n\t\t * @param {Time} time (optional) timing parameter\n\t\t * @private\n\t\t */\n\t Tone.PWMOscillator.prototype._stop = function (time) {\n\t time = this.toSeconds(time);\n\t this._modulator.stop(time);\n\t this._pulse.stop(time);\n\t };\n\t /**\n\t\t * The type of the oscillator. Always returns \"pwm\".\n\t\t * @readOnly\n\t\t * @memberOf Tone.PWMOscillator#\n\t\t * @type {string}\n\t\t * @name type\n\t\t */\n\t Object.defineProperty(Tone.PWMOscillator.prototype, 'type', {\n\t get: function () {\n\t return 'pwm';\n\t }\n\t });\n\t /**\n\t\t * The partials of the waveform. Cannot set partials for this waveform type\n\t\t * @memberOf Tone.PWMOscillator#\n\t\t * @type {Array}\n\t\t * @name partials\n\t\t * @private\n\t\t */\n\t Object.defineProperty(Tone.PWMOscillator.prototype, 'partials', {\n\t get: function () {\n\t return [];\n\t }\n\t });\n\t /**\n\t\t * The phase of the oscillator in degrees.\n\t\t * @memberOf Tone.PWMOscillator#\n\t\t * @type {number}\n\t\t * @name phase\n\t\t */\n\t Object.defineProperty(Tone.PWMOscillator.prototype, 'phase', {\n\t get: function () {\n\t return this._modulator.phase;\n\t },\n\t set: function (phase) {\n\t this._modulator.phase = phase;\n\t }\n\t });\n\t /**\n\t\t * Clean up.\n\t\t * @return {Tone.PWMOscillator} this\n\t\t */\n\t Tone.PWMOscillator.prototype.dispose = function () {\n\t Tone.Source.prototype.dispose.call(this);\n\t this._pulse.dispose();\n\t this._pulse = null;\n\t this._scale.dispose();\n\t this._scale = null;\n\t this._modulator.dispose();\n\t this._modulator = null;\n\t this._writable([\n\t 'modulationFrequency',\n\t 'frequency',\n\t 'detune'\n\t ]);\n\t this.frequency = null;\n\t this.detune = null;\n\t this.modulationFrequency = null;\n\t return this;\n\t };\n\t return Tone.PWMOscillator;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.FMOscillator \n\t\t *\n\t\t * @extends {Tone.Oscillator}\n\t\t * @constructor\n\t\t * @param {Frequency} frequency The starting frequency of the oscillator. \n\t\t * @param {String} type The type of the carrier oscillator.\n\t\t * @param {String} modulationType The type of the modulator oscillator.\n\t\t * @example\n\t\t * //a sine oscillator frequency-modulated by a square wave\n\t\t * var fmOsc = new Tone.FMOscillator(\"Ab3\", \"sine\", \"square\").toMaster().start();\n\t\t */\n\t Tone.FMOscillator = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'frequency',\n\t 'type',\n\t 'modulationType'\n\t ], Tone.FMOscillator.defaults);\n\t Tone.Source.call(this, options);\n\t /**\n\t\t\t * The carrier oscillator\n\t\t\t * @type {Tone.Oscillator}\n\t\t\t * @private\n\t\t\t */\n\t this._carrier = new Tone.Oscillator(options.frequency, options.type);\n\t /**\n\t\t\t * The oscillator's frequency\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.frequency = new Tone.Signal(options.frequency, Tone.Type.Frequency);\n\t /**\n\t\t\t * The detune control signal.\n\t\t\t * @type {Cents}\n\t\t\t * @signal\n\t\t\t */\n\t this.detune = this._carrier.detune;\n\t this.detune.value = options.detune;\n\t /**\n\t\t\t * The modulation index which is in essence the depth or amount of the modulation. In other terms it is the \n\t\t\t * ratio of the frequency of the modulating signal (mf) to the amplitude of the \n\t\t\t * modulating signal (ma) -- as in ma/mf. \n\t\t\t *\t@type {Positive}\n\t\t\t *\t@signal\n\t\t\t */\n\t this.modulationIndex = new Tone.Multiply(options.modulationIndex);\n\t this.modulationIndex.units = Tone.Type.Positive;\n\t /**\n\t\t\t * The modulating oscillator\n\t\t\t * @type {Tone.Oscillator}\n\t\t\t * @private\n\t\t\t */\n\t this._modulator = new Tone.Oscillator(options.frequency, options.modulationType);\n\t /**\n\t\t\t * Harmonicity is the frequency ratio between the carrier and the modulator oscillators. \n\t\t\t * A harmonicity of 1 gives both oscillators the same frequency. \n\t\t\t * Harmonicity = 2 means a change of an octave. \n\t\t\t * @type {Positive}\n\t\t\t * @signal\n\t\t\t * @example\n\t\t\t * //pitch the modulator an octave below carrier\n\t\t\t * synth.harmonicity.value = 0.5;\n\t\t\t */\n\t this.harmonicity = new Tone.Multiply(options.harmonicity);\n\t this.harmonicity.units = Tone.Type.Positive;\n\t /**\n\t\t\t * the node where the modulation happens\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this._modulationNode = new Tone.Gain(0);\n\t //connections\n\t this.frequency.connect(this._carrier.frequency);\n\t this.frequency.chain(this.harmonicity, this._modulator.frequency);\n\t this.frequency.chain(this.modulationIndex, this._modulationNode);\n\t this._modulator.connect(this._modulationNode.gain);\n\t this._modulationNode.connect(this._carrier.frequency);\n\t this._carrier.connect(this.output);\n\t this.detune.connect(this._modulator.detune);\n\t this.phase = options.phase;\n\t this._readOnly([\n\t 'modulationIndex',\n\t 'frequency',\n\t 'detune',\n\t 'harmonicity'\n\t ]);\n\t };\n\t Tone.extend(Tone.FMOscillator, Tone.Oscillator);\n\t /**\n\t\t * default values\n\t\t * @static\n\t\t * @type {Object}\n\t\t * @const\n\t\t */\n\t Tone.FMOscillator.defaults = {\n\t 'frequency': 440,\n\t 'detune': 0,\n\t 'phase': 0,\n\t 'modulationIndex': 2,\n\t 'modulationType': 'square',\n\t 'harmonicity': 1\n\t };\n\t /**\n\t\t * start the oscillator\n\t\t * @param {Time} [time=now]\n\t\t * @private\n\t\t */\n\t Tone.FMOscillator.prototype._start = function (time) {\n\t time = this.toSeconds(time);\n\t this._modulator.start(time);\n\t this._carrier.start(time);\n\t };\n\t /**\n\t\t * stop the oscillator\n\t\t * @param {Time} time (optional) timing parameter\n\t\t * @private\n\t\t */\n\t Tone.FMOscillator.prototype._stop = function (time) {\n\t time = this.toSeconds(time);\n\t this._modulator.stop(time);\n\t this._carrier.stop(time);\n\t };\n\t /**\n\t\t * The type of the carrier oscillator\n\t\t * @memberOf Tone.FMOscillator#\n\t\t * @type {string}\n\t\t * @name type\n\t\t */\n\t Object.defineProperty(Tone.FMOscillator.prototype, 'type', {\n\t get: function () {\n\t return this._carrier.type;\n\t },\n\t set: function (type) {\n\t this._carrier.type = type;\n\t }\n\t });\n\t /**\n\t\t * The type of the modulator oscillator\n\t\t * @memberOf Tone.FMOscillator#\n\t\t * @type {String}\n\t\t * @name modulationType\n\t\t */\n\t Object.defineProperty(Tone.FMOscillator.prototype, 'modulationType', {\n\t get: function () {\n\t return this._modulator.type;\n\t },\n\t set: function (type) {\n\t this._modulator.type = type;\n\t }\n\t });\n\t /**\n\t\t * The phase of the oscillator in degrees.\n\t\t * @memberOf Tone.FMOscillator#\n\t\t * @type {number}\n\t\t * @name phase\n\t\t */\n\t Object.defineProperty(Tone.FMOscillator.prototype, 'phase', {\n\t get: function () {\n\t return this._carrier.phase;\n\t },\n\t set: function (phase) {\n\t this._carrier.phase = phase;\n\t this._modulator.phase = phase;\n\t }\n\t });\n\t /**\n\t\t * The partials of the carrier waveform. A partial represents \n\t\t * the amplitude at a harmonic. The first harmonic is the \n\t\t * fundamental frequency, the second is the octave and so on\n\t\t * following the harmonic series. \n\t\t * Setting this value will automatically set the type to \"custom\". \n\t\t * The value is an empty array when the type is not \"custom\". \n\t\t * @memberOf Tone.FMOscillator#\n\t\t * @type {Array}\n\t\t * @name partials\n\t\t * @example\n\t\t * osc.partials = [1, 0.2, 0.01];\n\t\t */\n\t Object.defineProperty(Tone.FMOscillator.prototype, 'partials', {\n\t get: function () {\n\t return this._carrier.partials;\n\t },\n\t set: function (partials) {\n\t this._carrier.partials = partials;\n\t }\n\t });\n\t /**\n\t\t * Clean up.\n\t\t * @return {Tone.FMOscillator} this\n\t\t */\n\t Tone.FMOscillator.prototype.dispose = function () {\n\t Tone.Source.prototype.dispose.call(this);\n\t this._writable([\n\t 'modulationIndex',\n\t 'frequency',\n\t 'detune',\n\t 'harmonicity'\n\t ]);\n\t this.frequency.dispose();\n\t this.frequency = null;\n\t this.detune = null;\n\t this.harmonicity.dispose();\n\t this.harmonicity = null;\n\t this._carrier.dispose();\n\t this._carrier = null;\n\t this._modulator.dispose();\n\t this._modulator = null;\n\t this._modulationNode.dispose();\n\t this._modulationNode = null;\n\t this.modulationIndex.dispose();\n\t this.modulationIndex = null;\n\t return this;\n\t };\n\t return Tone.FMOscillator;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.AMOscillator \n\t\t *\n\t\t * @extends {Tone.Oscillator}\n\t\t * @constructor\n\t\t * @param {Frequency} frequency The starting frequency of the oscillator. \n\t\t * @param {String} type The type of the carrier oscillator.\n\t\t * @param {String} modulationType The type of the modulator oscillator.\n\t\t * @example\n\t\t * //a sine oscillator frequency-modulated by a square wave\n\t\t * var fmOsc = new Tone.AMOscillator(\"Ab3\", \"sine\", \"square\").toMaster().start();\n\t\t */\n\t Tone.AMOscillator = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'frequency',\n\t 'type',\n\t 'modulationType'\n\t ], Tone.AMOscillator.defaults);\n\t Tone.Source.call(this, options);\n\t /**\n\t\t\t * The carrier oscillator\n\t\t\t * @type {Tone.Oscillator}\n\t\t\t * @private\n\t\t\t */\n\t this._carrier = new Tone.Oscillator(options.frequency, options.type);\n\t /**\n\t\t\t * The oscillator's frequency\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.frequency = this._carrier.frequency;\n\t /**\n\t\t\t * The detune control signal.\n\t\t\t * @type {Cents}\n\t\t\t * @signal\n\t\t\t */\n\t this.detune = this._carrier.detune;\n\t this.detune.value = options.detune;\n\t /**\n\t\t\t * The modulating oscillator\n\t\t\t * @type {Tone.Oscillator}\n\t\t\t * @private\n\t\t\t */\n\t this._modulator = new Tone.Oscillator(options.frequency, options.modulationType);\n\t /**\n\t\t\t * convert the -1,1 output to 0,1\n\t\t\t * @type {Tone.AudioToGain}\n\t\t\t * @private\n\t\t\t */\n\t this._modulationScale = new Tone.AudioToGain();\n\t /**\n\t\t\t * Harmonicity is the frequency ratio between the carrier and the modulator oscillators. \n\t\t\t * A harmonicity of 1 gives both oscillators the same frequency. \n\t\t\t * Harmonicity = 2 means a change of an octave. \n\t\t\t * @type {Positive}\n\t\t\t * @signal\n\t\t\t * @example\n\t\t\t * //pitch the modulator an octave below carrier\n\t\t\t * synth.harmonicity.value = 0.5;\n\t\t\t */\n\t this.harmonicity = new Tone.Multiply(options.harmonicity);\n\t this.harmonicity.units = Tone.Type.Positive;\n\t /**\n\t\t\t * the node where the modulation happens\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this._modulationNode = new Tone.Gain(0);\n\t //connections\n\t this.frequency.chain(this.harmonicity, this._modulator.frequency);\n\t this.detune.connect(this._modulator.detune);\n\t this._modulator.chain(this._modulationScale, this._modulationNode.gain);\n\t this._carrier.chain(this._modulationNode, this.output);\n\t this.phase = options.phase;\n\t this._readOnly([\n\t 'frequency',\n\t 'detune',\n\t 'harmonicity'\n\t ]);\n\t };\n\t Tone.extend(Tone.AMOscillator, Tone.Oscillator);\n\t /**\n\t\t * default values\n\t\t * @static\n\t\t * @type {Object}\n\t\t * @const\n\t\t */\n\t Tone.AMOscillator.defaults = {\n\t 'frequency': 440,\n\t 'detune': 0,\n\t 'phase': 0,\n\t 'modulationType': 'square',\n\t 'harmonicity': 1\n\t };\n\t /**\n\t\t * start the oscillator\n\t\t * @param {Time} [time=now]\n\t\t * @private\n\t\t */\n\t Tone.AMOscillator.prototype._start = function (time) {\n\t time = this.toSeconds(time);\n\t this._modulator.start(time);\n\t this._carrier.start(time);\n\t };\n\t /**\n\t\t * stop the oscillator\n\t\t * @param {Time} time (optional) timing parameter\n\t\t * @private\n\t\t */\n\t Tone.AMOscillator.prototype._stop = function (time) {\n\t time = this.toSeconds(time);\n\t this._modulator.stop(time);\n\t this._carrier.stop(time);\n\t };\n\t /**\n\t\t * The type of the carrier oscillator\n\t\t * @memberOf Tone.AMOscillator#\n\t\t * @type {string}\n\t\t * @name type\n\t\t */\n\t Object.defineProperty(Tone.AMOscillator.prototype, 'type', {\n\t get: function () {\n\t return this._carrier.type;\n\t },\n\t set: function (type) {\n\t this._carrier.type = type;\n\t }\n\t });\n\t /**\n\t\t * The type of the modulator oscillator\n\t\t * @memberOf Tone.AMOscillator#\n\t\t * @type {string}\n\t\t * @name modulationType\n\t\t */\n\t Object.defineProperty(Tone.AMOscillator.prototype, 'modulationType', {\n\t get: function () {\n\t return this._modulator.type;\n\t },\n\t set: function (type) {\n\t this._modulator.type = type;\n\t }\n\t });\n\t /**\n\t\t * The phase of the oscillator in degrees.\n\t\t * @memberOf Tone.AMOscillator#\n\t\t * @type {number}\n\t\t * @name phase\n\t\t */\n\t Object.defineProperty(Tone.AMOscillator.prototype, 'phase', {\n\t get: function () {\n\t return this._carrier.phase;\n\t },\n\t set: function (phase) {\n\t this._carrier.phase = phase;\n\t this._modulator.phase = phase;\n\t }\n\t });\n\t /**\n\t\t * The partials of the carrier waveform. A partial represents \n\t\t * the amplitude at a harmonic. The first harmonic is the \n\t\t * fundamental frequency, the second is the octave and so on\n\t\t * following the harmonic series. \n\t\t * Setting this value will automatically set the type to \"custom\". \n\t\t * The value is an empty array when the type is not \"custom\". \n\t\t * @memberOf Tone.AMOscillator#\n\t\t * @type {Array}\n\t\t * @name partials\n\t\t * @example\n\t\t * osc.partials = [1, 0.2, 0.01];\n\t\t */\n\t Object.defineProperty(Tone.AMOscillator.prototype, 'partials', {\n\t get: function () {\n\t return this._carrier.partials;\n\t },\n\t set: function (partials) {\n\t this._carrier.partials = partials;\n\t }\n\t });\n\t /**\n\t\t * Clean up.\n\t\t * @return {Tone.AMOscillator} this\n\t\t */\n\t Tone.AMOscillator.prototype.dispose = function () {\n\t Tone.Source.prototype.dispose.call(this);\n\t this._writable([\n\t 'frequency',\n\t 'detune',\n\t 'harmonicity'\n\t ]);\n\t this.frequency = null;\n\t this.detune = null;\n\t this.harmonicity.dispose();\n\t this.harmonicity = null;\n\t this._carrier.dispose();\n\t this._carrier = null;\n\t this._modulator.dispose();\n\t this._modulator = null;\n\t this._modulationNode.dispose();\n\t this._modulationNode = null;\n\t this._modulationScale.dispose();\n\t this._modulationScale = null;\n\t return this;\n\t };\n\t return Tone.AMOscillator;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.FatOscillator \n\t\t *\n\t\t * @extends {Tone.Oscillator}\n\t\t * @constructor\n\t\t * @param {Frequency} frequency The starting frequency of the oscillator. \n\t\t * @param {String} type The type of the carrier oscillator.\n\t\t * @param {String} modulationType The type of the modulator oscillator.\n\t\t * @example\n\t\t * //a sine oscillator frequency-modulated by a square wave\n\t\t * var fmOsc = new Tone.FatOscillator(\"Ab3\", \"sine\", \"square\").toMaster().start();\n\t\t */\n\t Tone.FatOscillator = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'frequency',\n\t 'type',\n\t 'spread'\n\t ], Tone.FatOscillator.defaults);\n\t Tone.Source.call(this, options);\n\t /**\n\t\t\t * The oscillator's frequency\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.frequency = new Tone.Signal(options.frequency, Tone.Type.Frequency);\n\t /**\n\t\t\t * The detune control signal.\n\t\t\t * @type {Cents}\n\t\t\t * @signal\n\t\t\t */\n\t this.detune = new Tone.Signal(options.detune, Tone.Type.Cents);\n\t /**\n\t\t\t * The array of oscillators\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._oscillators = [];\n\t /**\n\t\t\t * The total spread of the oscillators\n\t\t\t * @type {Cents}\n\t\t\t * @private\n\t\t\t */\n\t this._spread = options.spread;\n\t /**\n\t\t\t * The type of the oscillator\n\t\t\t * @type {String}\n\t\t\t * @private\n\t\t\t */\n\t this._type = options.type;\n\t /**\n\t\t\t * The phase of the oscillators\n\t\t\t * @type {Degrees}\n\t\t\t * @private\n\t\t\t */\n\t this._phase = options.phase;\n\t /**\n\t\t\t * The partials array\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._partials = this.defaultArg(options.partials, []);\n\t //set the count initially\n\t this.count = options.count;\n\t this._readOnly([\n\t 'frequency',\n\t 'detune'\n\t ]);\n\t };\n\t Tone.extend(Tone.FatOscillator, Tone.Oscillator);\n\t /**\n\t\t * default values\n\t\t * @static\n\t\t * @type {Object}\n\t\t * @const\n\t\t */\n\t Tone.FatOscillator.defaults = {\n\t 'frequency': 440,\n\t 'detune': 0,\n\t 'phase': 0,\n\t 'spread': 20,\n\t 'count': 3,\n\t 'type': 'sawtooth'\n\t };\n\t /**\n\t\t * start the oscillator\n\t\t * @param {Time} [time=now]\n\t\t * @private\n\t\t */\n\t Tone.FatOscillator.prototype._start = function (time) {\n\t time = this.toSeconds(time);\n\t this._forEach(function (osc) {\n\t osc.start(time);\n\t });\n\t };\n\t /**\n\t\t * stop the oscillator\n\t\t * @param {Time} time (optional) timing parameter\n\t\t * @private\n\t\t */\n\t Tone.FatOscillator.prototype._stop = function (time) {\n\t time = this.toSeconds(time);\n\t this._forEach(function (osc) {\n\t osc.stop(time);\n\t });\n\t };\n\t /**\n\t\t * Iterate over all of the oscillators\n\t\t * @param {Function} iterator The iterator function\n\t\t * @private\n\t\t */\n\t Tone.FatOscillator.prototype._forEach = function (iterator) {\n\t for (var i = 0; i < this._oscillators.length; i++) {\n\t iterator.call(this, this._oscillators[i], i);\n\t }\n\t };\n\t /**\n\t\t * The type of the carrier oscillator\n\t\t * @memberOf Tone.FatOscillator#\n\t\t * @type {string}\n\t\t * @name type\n\t\t */\n\t Object.defineProperty(Tone.FatOscillator.prototype, 'type', {\n\t get: function () {\n\t return this._type;\n\t },\n\t set: function (type) {\n\t this._type = type;\n\t this._forEach(function (osc) {\n\t osc.type = type;\n\t });\n\t }\n\t });\n\t /**\n\t\t * The detune spread between the oscillators. If \"count\" is\n\t\t * set to 3 oscillators and the \"spread\" is set to 40,\n\t\t * the three oscillators would be detuned like this: [-20, 0, 20]\n\t\t * for a total detune spread of 40 cents.\n\t\t * @memberOf Tone.FatOscillator#\n\t\t * @type {Cents}\n\t\t * @name spread\n\t\t */\n\t Object.defineProperty(Tone.FatOscillator.prototype, 'spread', {\n\t get: function () {\n\t return this._spread;\n\t },\n\t set: function (spread) {\n\t this._spread = spread;\n\t if (this._oscillators.length > 1) {\n\t var start = -spread / 2;\n\t var step = spread / (this._oscillators.length - 1);\n\t this._forEach(function (osc, i) {\n\t osc.detune.value = start + step * i;\n\t });\n\t }\n\t }\n\t });\n\t /**\n\t\t * The number of detuned oscillators\n\t\t * @memberOf Tone.FatOscillator#\n\t\t * @type {Number}\n\t\t * @name count\n\t\t */\n\t Object.defineProperty(Tone.FatOscillator.prototype, 'count', {\n\t get: function () {\n\t return this._oscillators.length;\n\t },\n\t set: function (count) {\n\t count = Math.max(count, 1);\n\t if (this._oscillators.length !== count) {\n\t // var partials = this.partials;\n\t // var type = this.type;\n\t //dispose the previous oscillators\n\t this._forEach(function (osc) {\n\t osc.dispose();\n\t });\n\t this._oscillators = [];\n\t for (var i = 0; i < count; i++) {\n\t var osc = new Tone.Oscillator();\n\t if (this.type === Tone.Oscillator.Type.Custom) {\n\t osc.partials = this._partials;\n\t } else {\n\t osc.type = this._type;\n\t }\n\t osc.phase = this._phase;\n\t osc.volume.value = -6 - count;\n\t this.frequency.connect(osc.frequency);\n\t this.detune.connect(osc.detune);\n\t osc.connect(this.output);\n\t this._oscillators[i] = osc;\n\t }\n\t //set the spread\n\t this.spread = this._spread;\n\t if (this.state === Tone.State.Started) {\n\t this._forEach(function (osc) {\n\t osc.start();\n\t });\n\t }\n\t }\n\t }\n\t });\n\t /**\n\t\t * The phase of the oscillator in degrees.\n\t\t * @memberOf Tone.FatOscillator#\n\t\t * @type {Number}\n\t\t * @name phase\n\t\t */\n\t Object.defineProperty(Tone.FatOscillator.prototype, 'phase', {\n\t get: function () {\n\t return this._phase;\n\t },\n\t set: function (phase) {\n\t this._phase = phase;\n\t this._forEach(function (osc) {\n\t osc.phase = phase;\n\t });\n\t }\n\t });\n\t /**\n\t\t * The partials of the carrier waveform. A partial represents \n\t\t * the amplitude at a harmonic. The first harmonic is the \n\t\t * fundamental frequency, the second is the octave and so on\n\t\t * following the harmonic series. \n\t\t * Setting this value will automatically set the type to \"custom\". \n\t\t * The value is an empty array when the type is not \"custom\". \n\t\t * @memberOf Tone.FatOscillator#\n\t\t * @type {Array}\n\t\t * @name partials\n\t\t * @example\n\t\t * osc.partials = [1, 0.2, 0.01];\n\t\t */\n\t Object.defineProperty(Tone.FatOscillator.prototype, 'partials', {\n\t get: function () {\n\t return this._partials;\n\t },\n\t set: function (partials) {\n\t this._partials = partials;\n\t this._type = Tone.Oscillator.Type.Custom;\n\t this._forEach(function (osc) {\n\t osc.partials = partials;\n\t });\n\t }\n\t });\n\t /**\n\t\t * Clean up.\n\t\t * @return {Tone.FatOscillator} this\n\t\t */\n\t Tone.FatOscillator.prototype.dispose = function () {\n\t Tone.Source.prototype.dispose.call(this);\n\t this._writable([\n\t 'frequency',\n\t 'detune'\n\t ]);\n\t this.frequency.dispose();\n\t this.frequency = null;\n\t this.detune.dispose();\n\t this.detune = null;\n\t this._forEach(function (osc) {\n\t osc.dispose();\n\t });\n\t this._oscillators = null;\n\t this._partials = null;\n\t return this;\n\t };\n\t return Tone.FatOscillator;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.OmniOscillator aggregates Tone.Oscillator, Tone.PulseOscillator,\n\t\t * Tone.PWMOscillator, Tone.FMOscillator, Tone.AMOscillator, and Tone.FatOscillator\n\t\t * into one class. The oscillator class can be changed by setting the `type`. \n\t\t * `omniOsc.type = \"pwm\"` will set it to the Tone.PWMOscillator. Prefixing\n\t\t * any of the basic types (\"sine\", \"square4\", etc.) with \"fm\", \"am\", or \"fat\"\n\t\t * will use the FMOscillator, AMOscillator or FatOscillator respectively. \n\t\t * For example: `omniOsc.type = \"fatsawtooth\"` will create set the oscillator\n\t\t * to a FatOscillator of type \"sawtooth\". \n\t\t *\n\t\t * @extends {Tone.Oscillator}\n\t\t * @constructor\n\t\t * @param {Frequency} frequency The initial frequency of the oscillator.\n\t\t * @param {String} type The type of the oscillator.\n\t\t * @example\n\t\t * var omniOsc = new Tone.OmniOscillator(\"C#4\", \"pwm\");\n\t\t */\n\t Tone.OmniOscillator = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'frequency',\n\t 'type'\n\t ], Tone.OmniOscillator.defaults);\n\t Tone.Source.call(this, options);\n\t /**\n\t\t\t * The frequency control.\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.frequency = new Tone.Signal(options.frequency, Tone.Type.Frequency);\n\t /**\n\t\t\t * The detune control\n\t\t\t * @type {Cents}\n\t\t\t * @signal\n\t\t\t */\n\t this.detune = new Tone.Signal(options.detune, Tone.Type.Cents);\n\t /**\n\t\t\t * the type of the oscillator source\n\t\t\t * @type {String}\n\t\t\t * @private\n\t\t\t */\n\t this._sourceType = undefined;\n\t /**\n\t\t\t * the oscillator\n\t\t\t * @type {Tone.Oscillator}\n\t\t\t * @private\n\t\t\t */\n\t this._oscillator = null;\n\t //set the oscillator\n\t this.type = options.type;\n\t this._readOnly([\n\t 'frequency',\n\t 'detune'\n\t ]);\n\t //set the options\n\t this.set(options);\n\t };\n\t Tone.extend(Tone.OmniOscillator, Tone.Oscillator);\n\t /**\n\t\t * default values\n\t\t * @static\n\t\t * @type {Object}\n\t\t * @const\n\t\t */\n\t Tone.OmniOscillator.defaults = {\n\t 'frequency': 440,\n\t 'detune': 0,\n\t 'type': 'sine',\n\t 'phase': 0\n\t };\n\t /**\n\t\t * @enum {String}\n\t\t * @private\n\t\t */\n\t var OmniOscType = {\n\t Pulse: 'PulseOscillator',\n\t PWM: 'PWMOscillator',\n\t Osc: 'Oscillator',\n\t FM: 'FMOscillator',\n\t AM: 'AMOscillator',\n\t Fat: 'FatOscillator'\n\t };\n\t /**\n\t\t * start the oscillator\n\t\t * @param {Time} [time=now] the time to start the oscillator\n\t\t * @private\n\t\t */\n\t Tone.OmniOscillator.prototype._start = function (time) {\n\t this._oscillator.start(time);\n\t };\n\t /**\n\t\t * start the oscillator\n\t\t * @param {Time} [time=now] the time to start the oscillator\n\t\t * @private\n\t\t */\n\t Tone.OmniOscillator.prototype._stop = function (time) {\n\t this._oscillator.stop(time);\n\t };\n\t /**\n\t\t * The type of the oscillator. Can be any of the basic types: sine, square, triangle, sawtooth. Or\n\t\t * prefix the basic types with \"fm\", \"am\", or \"fat\" to use the FMOscillator, AMOscillator or FatOscillator\n\t\t * types. The oscillator could also be set to \"pwm\" or \"pulse\". All of the parameters of the\n\t\t * oscillator's class are accessible when the oscillator is set to that type, but throws an error \n\t\t * when it's not.\n\t\t * \n\t\t * @memberOf Tone.OmniOscillator#\n\t\t * @type {String}\n\t\t * @name type\n\t\t * @example\n\t\t * omniOsc.type = \"pwm\";\n\t\t * //modulationFrequency is parameter which is available\n\t\t * //only when the type is \"pwm\". \n\t\t * omniOsc.modulationFrequency.value = 0.5;\n\t\t * @example\n\t\t * //an square wave frequency modulated by a sawtooth\n\t\t * omniOsc.type = \"fmsquare\";\n\t\t * omniOsc.modulationType = \"sawtooth\";\n\t\t */\n\t Object.defineProperty(Tone.OmniOscillator.prototype, 'type', {\n\t get: function () {\n\t var prefix = '';\n\t if (this._sourceType === OmniOscType.FM) {\n\t prefix = 'fm';\n\t } else if (this._sourceType === OmniOscType.AM) {\n\t prefix = 'am';\n\t } else if (this._sourceType === OmniOscType.Fat) {\n\t prefix = 'fat';\n\t }\n\t return prefix + this._oscillator.type;\n\t },\n\t set: function (type) {\n\t if (type.substr(0, 2) === 'fm') {\n\t this._createNewOscillator(OmniOscType.FM);\n\t this._oscillator.type = type.substr(2);\n\t } else if (type.substr(0, 2) === 'am') {\n\t this._createNewOscillator(OmniOscType.AM);\n\t this._oscillator.type = type.substr(2);\n\t } else if (type.substr(0, 3) === 'fat') {\n\t this._createNewOscillator(OmniOscType.Fat);\n\t this._oscillator.type = type.substr(3);\n\t } else if (type === 'pwm') {\n\t this._createNewOscillator(OmniOscType.PWM);\n\t } else if (type === 'pulse') {\n\t this._createNewOscillator(OmniOscType.Pulse);\n\t } else {\n\t this._createNewOscillator(OmniOscType.Osc);\n\t this._oscillator.type = type;\n\t }\n\t }\n\t });\n\t /**\n\t\t * The partials of the waveform. A partial represents \n\t\t * the amplitude at a harmonic. The first harmonic is the \n\t\t * fundamental frequency, the second is the octave and so on\n\t\t * following the harmonic series. \n\t\t * Setting this value will automatically set the type to \"custom\". \n\t\t * The value is an empty array when the type is not \"custom\". \n\t\t * This is not available on \"pwm\" and \"pulse\" oscillator types.\n\t\t * @memberOf Tone.OmniOscillator#\n\t\t * @type {Array}\n\t\t * @name partials\n\t\t * @example\n\t\t * osc.partials = [1, 0.2, 0.01];\n\t\t */\n\t Object.defineProperty(Tone.OmniOscillator.prototype, 'partials', {\n\t get: function () {\n\t return this._oscillator.partials;\n\t },\n\t set: function (partials) {\n\t this._oscillator.partials = partials;\n\t }\n\t });\n\t /**\n\t\t * Set a member/attribute of the oscillator. \n\t\t * @param {Object|String} params\n\t\t * @param {number=} value\n\t\t * @param {Time=} rampTime\n\t\t * @returns {Tone.OmniOscillator} this\n\t\t */\n\t Tone.OmniOscillator.prototype.set = function (params, value) {\n\t //make sure the type is set first\n\t if (params === 'type') {\n\t this.type = value;\n\t } else if (this.isObject(params) && params.hasOwnProperty('type')) {\n\t this.type = params.type;\n\t }\n\t //then set the rest\n\t Tone.prototype.set.apply(this, arguments);\n\t return this;\n\t };\n\t /**\n\t\t * connect the oscillator to the frequency and detune signals\n\t\t * @private\n\t\t */\n\t Tone.OmniOscillator.prototype._createNewOscillator = function (oscType) {\n\t if (oscType !== this._sourceType) {\n\t this._sourceType = oscType;\n\t var OscillatorConstructor = Tone[oscType];\n\t //short delay to avoid clicks on the change\n\t var now = this.now() + this.blockTime;\n\t if (this._oscillator !== null) {\n\t var oldOsc = this._oscillator;\n\t oldOsc.stop(now);\n\t //dispose the old one\n\t setTimeout(function () {\n\t oldOsc.dispose();\n\t oldOsc = null;\n\t }, this.blockTime * 1000);\n\t }\n\t this._oscillator = new OscillatorConstructor();\n\t this.frequency.connect(this._oscillator.frequency);\n\t this.detune.connect(this._oscillator.detune);\n\t this._oscillator.connect(this.output);\n\t if (this.state === Tone.State.Started) {\n\t this._oscillator.start(now);\n\t }\n\t }\n\t };\n\t /**\n\t\t * The phase of the oscillator in degrees. \n\t\t * @memberOf Tone.OmniOscillator#\n\t\t * @type {Degrees}\n\t\t * @name phase\n\t\t */\n\t Object.defineProperty(Tone.OmniOscillator.prototype, 'phase', {\n\t get: function () {\n\t return this._oscillator.phase;\n\t },\n\t set: function (phase) {\n\t this._oscillator.phase = phase;\n\t }\n\t });\n\t /**\n\t\t * The width of the oscillator (only if the oscillator is set to \"pulse\")\n\t\t * @memberOf Tone.OmniOscillator#\n\t\t * @type {NormalRange}\n\t\t * @signal\n\t\t * @name width\n\t\t * @example\n\t\t * var omniOsc = new Tone.OmniOscillator(440, \"pulse\");\n\t\t * //can access the width attribute only if type === \"pulse\"\n\t\t * omniOsc.width.value = 0.2; \n\t\t */\n\t Object.defineProperty(Tone.OmniOscillator.prototype, 'width', {\n\t get: function () {\n\t if (this._sourceType === OmniOscType.Pulse) {\n\t return this._oscillator.width;\n\t }\n\t }\n\t });\n\t /**\n\t\t * The number of detuned oscillators\n\t\t * @memberOf Tone.OmniOscillator#\n\t\t * @type {Number}\n\t\t * @name count\n\t\t */\n\t Object.defineProperty(Tone.OmniOscillator.prototype, 'count', {\n\t get: function () {\n\t if (this._sourceType === OmniOscType.Fat) {\n\t return this._oscillator.count;\n\t }\n\t },\n\t set: function (count) {\n\t if (this._sourceType === OmniOscType.Fat) {\n\t this._oscillator.count = count;\n\t }\n\t }\n\t });\n\t /**\n\t\t * The detune spread between the oscillators. If \"count\" is\n\t\t * set to 3 oscillators and the \"spread\" is set to 40,\n\t\t * the three oscillators would be detuned like this: [-20, 0, 20]\n\t\t * for a total detune spread of 40 cents. See Tone.FatOscillator\n\t\t * for more info.\n\t\t * @memberOf Tone.OmniOscillator#\n\t\t * @type {Cents}\n\t\t * @name spread\n\t\t */\n\t Object.defineProperty(Tone.OmniOscillator.prototype, 'spread', {\n\t get: function () {\n\t if (this._sourceType === OmniOscType.Fat) {\n\t return this._oscillator.spread;\n\t }\n\t },\n\t set: function (spread) {\n\t if (this._sourceType === OmniOscType.Fat) {\n\t this._oscillator.spread = spread;\n\t }\n\t }\n\t });\n\t /**\n\t\t * The type of the modulator oscillator. Only if the oscillator\n\t\t * is set to \"am\" or \"fm\" types. see. Tone.AMOscillator or Tone.FMOscillator\n\t\t * for more info. \n\t\t * @memberOf Tone.OmniOscillator#\n\t\t * @type {String}\n\t\t * @name modulationType\n\t\t */\n\t Object.defineProperty(Tone.OmniOscillator.prototype, 'modulationType', {\n\t get: function () {\n\t if (this._sourceType === OmniOscType.FM || this._sourceType === OmniOscType.AM) {\n\t return this._oscillator.modulationType;\n\t }\n\t },\n\t set: function (mType) {\n\t if (this._sourceType === OmniOscType.FM || this._sourceType === OmniOscType.AM) {\n\t this._oscillator.modulationType = mType;\n\t }\n\t }\n\t });\n\t /**\n\t\t * The modulation index which is in essence the depth or amount of the modulation. In other terms it is the \n\t\t * ratio of the frequency of the modulating signal (mf) to the amplitude of the \n\t\t * modulating signal (ma) -- as in ma/mf. \n\t\t * See Tone.FMOscillator for more info. \n\t\t * @type {Positive}\n\t\t * @signal\n\t\t * @name modulationIndex\n\t\t */\n\t Object.defineProperty(Tone.OmniOscillator.prototype, 'modulationIndex', {\n\t get: function () {\n\t if (this._sourceType === OmniOscType.FM) {\n\t return this._oscillator.modulationIndex;\n\t }\n\t }\n\t });\n\t /**\n\t\t * Harmonicity is the frequency ratio between the carrier and the modulator oscillators. \n\t\t * A harmonicity of 1 gives both oscillators the same frequency. \n\t\t * Harmonicity = 2 means a change of an octave. See Tone.AMOscillator or Tone.FMOscillator\n\t\t * for more info. \n\t\t * @memberOf Tone.OmniOscillator#\n\t\t * @signal\n\t\t * @type {Positive}\n\t\t * @name harmonicity\n\t\t */\n\t Object.defineProperty(Tone.OmniOscillator.prototype, 'harmonicity', {\n\t get: function () {\n\t if (this._sourceType === OmniOscType.FM || this._sourceType === OmniOscType.AM) {\n\t return this._oscillator.harmonicity;\n\t }\n\t }\n\t });\n\t /**\n\t\t * The modulationFrequency Signal of the oscillator \n\t\t * (only if the oscillator type is set to pwm). See \n\t\t * Tone.PWMOscillator for more info. \n\t\t * @memberOf Tone.OmniOscillator#\n\t\t * @type {Frequency}\n\t\t * @signal\n\t\t * @name modulationFrequency\n\t\t * @example\n\t\t * var omniOsc = new Tone.OmniOscillator(440, \"pwm\");\n\t\t * //can access the modulationFrequency attribute only if type === \"pwm\"\n\t\t * omniOsc.modulationFrequency.value = 0.2; \n\t\t */\n\t Object.defineProperty(Tone.OmniOscillator.prototype, 'modulationFrequency', {\n\t get: function () {\n\t if (this._sourceType === OmniOscType.PWM) {\n\t return this._oscillator.modulationFrequency;\n\t }\n\t }\n\t });\n\t /**\n\t\t * Clean up.\n\t\t * @return {Tone.OmniOscillator} this\n\t\t */\n\t Tone.OmniOscillator.prototype.dispose = function () {\n\t Tone.Source.prototype.dispose.call(this);\n\t this._writable([\n\t 'frequency',\n\t 'detune'\n\t ]);\n\t this.detune.dispose();\n\t this.detune = null;\n\t this.frequency.dispose();\n\t this.frequency = null;\n\t this._oscillator.dispose();\n\t this._oscillator = null;\n\t this._sourceType = null;\n\t return this;\n\t };\n\t return Tone.OmniOscillator;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Base-class for all instruments\n\t\t * \n\t\t * @constructor\n\t\t * @extends {Tone}\n\t\t */\n\t Tone.Instrument = function (options) {\n\t //get the defaults\n\t options = this.defaultArg(options, Tone.Instrument.defaults);\n\t /**\n\t\t\t * The output and volume triming node\n\t\t\t * @type {Tone.Volume}\n\t\t\t * @private\n\t\t\t */\n\t this._volume = this.output = new Tone.Volume(options.volume);\n\t /**\n\t\t\t * The volume of the output in decibels.\n\t\t\t * @type {Decibels}\n\t\t\t * @signal\n\t\t\t * @example\n\t\t\t * source.volume.value = -6;\n\t\t\t */\n\t this.volume = this._volume.volume;\n\t this._readOnly('volume');\n\t };\n\t Tone.extend(Tone.Instrument);\n\t /**\n\t\t * the default attributes\n\t\t * @type {object}\n\t\t */\n\t Tone.Instrument.defaults = {\n\t /** the volume of the output in decibels */\n\t 'volume': 0\n\t };\n\t /**\n\t\t * @abstract\n\t\t * @param {string|number} note the note to trigger\n\t\t * @param {Time} [time=now] the time to trigger the ntoe\n\t\t * @param {number} [velocity=1] the velocity to trigger the note\n\t\t */\n\t Tone.Instrument.prototype.triggerAttack = Tone.noOp;\n\t /**\n\t\t * @abstract\n\t\t * @param {Time} [time=now] when to trigger the release\n\t\t */\n\t Tone.Instrument.prototype.triggerRelease = Tone.noOp;\n\t /**\n\t\t * Trigger the attack and then the release after the duration. \n\t\t * @param {Frequency} note The note to trigger.\n\t\t * @param {Time} duration How long the note should be held for before\n\t\t * triggering the release. This value must be greater than 0. \n\t\t * @param {Time} [time=now] When the note should be triggered.\n\t\t * @param {NormalRange} [velocity=1] The velocity the note should be triggered at.\n\t\t * @returns {Tone.Instrument} this\n\t\t * @example\n\t\t * //trigger \"C4\" for the duration of an 8th note\n\t\t * synth.triggerAttackRelease(\"C4\", \"8n\");\n\t\t */\n\t Tone.Instrument.prototype.triggerAttackRelease = function (note, duration, time, velocity) {\n\t if (this.isUndef(time)) {\n\t time = this.now() + this.blockTime;\n\t } else {\n\t time = this.toSeconds(time);\n\t }\n\t duration = this.toSeconds(duration);\n\t this.triggerAttack(note, time, velocity);\n\t this.triggerRelease(time + duration);\n\t return this;\n\t };\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.Instrument} this\n\t\t */\n\t Tone.Instrument.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._volume.dispose();\n\t this._volume = null;\n\t this._writable(['volume']);\n\t this.volume = null;\n\t return this;\n\t };\n\t return Tone.Instrument;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class This is an abstract base class for other monophonic instruments to \n\t\t * extend. IMPORTANT: It does not make any sound on its own and\n\t\t * shouldn't be directly instantiated.\n\t\t *\n\t\t * @constructor\n\t\t * @abstract\n\t\t * @extends {Tone.Instrument}\n\t\t */\n\t Tone.Monophonic = function (options) {\n\t //get the defaults\n\t options = this.defaultArg(options, Tone.Monophonic.defaults);\n\t Tone.Instrument.call(this, options);\n\t /**\n\t\t\t * The glide time between notes. \n\t\t\t * @type {Time}\n\t\t\t */\n\t this.portamento = options.portamento;\n\t };\n\t Tone.extend(Tone.Monophonic, Tone.Instrument);\n\t /**\n\t\t * @static\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.Monophonic.defaults = { 'portamento': 0 };\n\t /**\n\t\t * Trigger the attack of the note optionally with a given velocity. \n\t\t * \n\t\t * \n\t\t * @param {Frequency} note The note to trigger.\n\t\t * @param {Time} [time=now] When the note should start.\n\t\t * @param {number} [velocity=1] velocity The velocity scaler \n\t\t * determines how \"loud\" the note \n\t\t * will be triggered.\n\t\t * @returns {Tone.Monophonic} this\n\t\t * @example\n\t\t * synth.triggerAttack(\"C4\");\n\t\t * @example\n\t\t * //trigger the note a half second from now at half velocity\n\t\t * synth.triggerAttack(\"C4\", \"+0.5\", 0.5);\n\t\t */\n\t Tone.Monophonic.prototype.triggerAttack = function (note, time, velocity) {\n\t if (this.isUndef(time)) {\n\t time = this.now() + this.blockTime;\n\t } else {\n\t time = this.toSeconds(time);\n\t }\n\t this._triggerEnvelopeAttack(time, velocity);\n\t this.setNote(note, time);\n\t return this;\n\t };\n\t /**\n\t\t * Trigger the release portion of the envelope\n\t\t * @param {Time} [time=now] If no time is given, the release happens immediatly\n\t\t * @returns {Tone.Monophonic} this\n\t\t * @example\n\t\t * synth.triggerRelease();\n\t\t */\n\t Tone.Monophonic.prototype.triggerRelease = function (time) {\n\t if (this.isUndef(time)) {\n\t time = this.now() + this.blockTime;\n\t } else {\n\t time = this.toSeconds(time);\n\t }\n\t this._triggerEnvelopeRelease(time);\n\t return this;\n\t };\n\t /**\n\t\t * override this method with the actual method\n\t\t * @abstract\n\t\t * @private\n\t\t */\n\t Tone.Monophonic.prototype._triggerEnvelopeAttack = function () {\n\t };\n\t /**\n\t\t * override this method with the actual method\n\t\t * @abstract\n\t\t * @private\n\t\t */\n\t Tone.Monophonic.prototype._triggerEnvelopeRelease = function () {\n\t };\n\t /**\n\t\t * Set the note at the given time. If no time is given, the note\n\t\t * will set immediately. \n\t\t * @param {Frequency} note The note to change to.\n\t\t * @param {Time} [time=now] The time when the note should be set. \n\t\t * @returns {Tone.Monophonic} this\n\t\t * @example\n\t\t * //change to F#6 in one quarter note from now.\n\t\t * synth.setNote(\"F#6\", \"+4n\");\n\t\t * @example\n\t\t * //change to Bb4 right now\n\t\t * synth.setNote(\"Bb4\");\n\t\t */\n\t Tone.Monophonic.prototype.setNote = function (note, time) {\n\t time = this.toSeconds(time);\n\t if (this.portamento > 0) {\n\t var currentNote = this.frequency.value;\n\t this.frequency.setValueAtTime(currentNote, time);\n\t var portTime = this.toSeconds(this.portamento);\n\t this.frequency.exponentialRampToValueAtTime(note, time + portTime);\n\t } else {\n\t this.frequency.setValueAtTime(note, time);\n\t }\n\t return this;\n\t };\n\t return Tone.Monophonic;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Synth is composed simply of a Tone.OmniOscillator\n\t\t * routed through a Tone.AmplitudeEnvelope. \n\t\t * <img src=\"https://docs.google.com/drawings/d/1-1_0YW2Z1J2EPI36P8fNCMcZG7N1w1GZluPs4og4evo/pub?w=1163&h=231\">\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.Monophonic}\n\t\t * @param {Object} [options] the options available for the synth \n\t\t * see defaults below\n\t\t * @example\n\t\t * var synth = new Tone.Synth().toMaster();\n\t\t * synth.triggerAttackRelease(\"C4\", \"8n\");\n\t\t */\n\t Tone.Synth = function (options) {\n\t //get the defaults\n\t options = this.defaultArg(options, Tone.Synth.defaults);\n\t Tone.Monophonic.call(this, options);\n\t /**\n\t\t\t * The oscillator.\n\t\t\t * @type {Tone.OmniOscillator}\n\t\t\t */\n\t this.oscillator = new Tone.OmniOscillator(options.oscillator);\n\t /**\n\t\t\t * The frequency control.\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.frequency = this.oscillator.frequency;\n\t /**\n\t\t\t * The detune control.\n\t\t\t * @type {Cents}\n\t\t\t * @signal\n\t\t\t */\n\t this.detune = this.oscillator.detune;\n\t /**\n\t\t\t * The amplitude envelope.\n\t\t\t * @type {Tone.AmplitudeEnvelope}\n\t\t\t */\n\t this.envelope = new Tone.AmplitudeEnvelope(options.envelope);\n\t //connect the oscillators to the output\n\t this.oscillator.chain(this.envelope, this.output);\n\t //start the oscillators\n\t this.oscillator.start();\n\t this._readOnly([\n\t 'oscillator',\n\t 'frequency',\n\t 'detune',\n\t 'envelope'\n\t ]);\n\t };\n\t Tone.extend(Tone.Synth, Tone.Monophonic);\n\t /**\n\t\t * @const\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.Synth.defaults = {\n\t 'oscillator': { 'type': 'triangle' },\n\t 'envelope': {\n\t 'attack': 0.005,\n\t 'decay': 0.1,\n\t 'sustain': 0.3,\n\t 'release': 1\n\t }\n\t };\n\t /**\n\t\t * start the attack portion of the envelope\n\t\t * @param {Time} [time=now] the time the attack should start\n\t\t * @param {number} [velocity=1] the velocity of the note (0-1)\n\t\t * @returns {Tone.Synth} this\n\t\t * @private\n\t\t */\n\t Tone.Synth.prototype._triggerEnvelopeAttack = function (time, velocity) {\n\t //the envelopes\n\t this.envelope.triggerAttack(time, velocity);\n\t return this;\n\t };\n\t /**\n\t\t * start the release portion of the envelope\n\t\t * @param {Time} [time=now] the time the release should start\n\t\t * @returns {Tone.Synth} this\n\t\t * @private\n\t\t */\n\t Tone.Synth.prototype._triggerEnvelopeRelease = function (time) {\n\t this.envelope.triggerRelease(time);\n\t return this;\n\t };\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.Synth} this\n\t\t */\n\t Tone.Synth.prototype.dispose = function () {\n\t Tone.Monophonic.prototype.dispose.call(this);\n\t this._writable([\n\t 'oscillator',\n\t 'frequency',\n\t 'detune',\n\t 'envelope'\n\t ]);\n\t this.oscillator.dispose();\n\t this.oscillator = null;\n\t this.envelope.dispose();\n\t this.envelope = null;\n\t this.frequency = null;\n\t this.detune = null;\n\t return this;\n\t };\n\t return Tone.Synth;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class AMSynth uses the output of one Tone.Synth to modulate the\n\t\t * amplitude of another Tone.Synth. The harmonicity (the ratio between\n\t\t * the two signals) affects the timbre of the output signal greatly.\n\t\t * Read more about Amplitude Modulation Synthesis on \n\t\t * [SoundOnSound](http://www.soundonsound.com/sos/mar00/articles/synthsecrets.htm).\n\t\t * <img src=\"https://docs.google.com/drawings/d/1TQu8Ed4iFr1YTLKpB3U1_hur-UwBrh5gdBXc8BxfGKw/pub?w=1009&h=457\">\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.Monophonic}\n\t\t * @param {Object} [options] the options available for the synth \n\t\t * see defaults below\n\t\t * @example\n\t\t * var synth = new Tone.AMSynth().toMaster();\n\t\t * synth.triggerAttackRelease(\"C4\", \"4n\");\n\t\t */\n\t Tone.AMSynth = function (options) {\n\t options = this.defaultArg(options, Tone.AMSynth.defaults);\n\t Tone.Monophonic.call(this, options);\n\t /**\n\t\t\t * The carrier voice. \n\t\t\t * @type {Tone.Synth}\n\t\t\t * @private\n\t\t\t */\n\t this._carrier = new Tone.Synth();\n\t this._carrier.volume.value = -10;\n\t /**\n\t\t\t * The carrier's oscillator\n\t\t\t * @type {Tone.Oscillator}\n\t\t\t */\n\t this.oscillator = this._carrier.oscillator;\n\t /**\n\t\t\t * The carrier's envelope\n\t\t\t * @type {Tone.AmplitudeEnvelope}\n\t\t\t */\n\t this.envelope = this._carrier.envelope.set(options.envelope);\n\t /**\n\t\t\t * The modulator voice. \n\t\t\t * @type {Tone.Synth}\n\t\t\t * @private\n\t\t\t */\n\t this._modulator = new Tone.Synth();\n\t this._modulator.volume.value = -10;\n\t /**\n\t\t\t * The modulator's oscillator which is applied\n\t\t\t * to the amplitude of the oscillator\n\t\t\t * @type {Tone.Oscillator}\n\t\t\t */\n\t this.modulation = this._modulator.oscillator.set(options.modulation);\n\t /**\n\t\t\t * The modulator's envelope\n\t\t\t * @type {Tone.AmplitudeEnvelope}\n\t\t\t */\n\t this.modulationEnvelope = this._modulator.envelope.set(options.modulationEnvelope);\n\t /**\n\t\t\t * The frequency.\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.frequency = new Tone.Signal(440, Tone.Type.Frequency);\n\t /**\n\t\t\t * The detune in cents\n\t\t\t * @type {Cents}\n\t\t\t * @signal\n\t\t\t */\n\t this.detune = new Tone.Signal(options.detune, Tone.Type.Cents);\n\t /**\n\t\t\t * Harmonicity is the ratio between the two voices. A harmonicity of\n\t\t\t * 1 is no change. Harmonicity = 2 means a change of an octave. \n\t\t\t * @type {Positive}\n\t\t\t * @signal\n\t\t\t * @example\n\t\t\t * //pitch voice1 an octave below voice0\n\t\t\t * synth.harmonicity.value = 0.5;\n\t\t\t */\n\t this.harmonicity = new Tone.Multiply(options.harmonicity);\n\t this.harmonicity.units = Tone.Type.Positive;\n\t /**\n\t\t\t * convert the -1,1 output to 0,1\n\t\t\t * @type {Tone.AudioToGain}\n\t\t\t * @private\n\t\t\t */\n\t this._modulationScale = new Tone.AudioToGain();\n\t /**\n\t\t\t * the node where the modulation happens\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this._modulationNode = new Tone.Gain();\n\t //control the two voices frequency\n\t this.frequency.connect(this._carrier.frequency);\n\t this.frequency.chain(this.harmonicity, this._modulator.frequency);\n\t this.detune.fan(this._carrier.detune, this._modulator.detune);\n\t this._modulator.chain(this._modulationScale, this._modulationNode.gain);\n\t this._carrier.chain(this._modulationNode, this.output);\n\t this._readOnly([\n\t 'frequency',\n\t 'harmonicity',\n\t 'oscillator',\n\t 'envelope',\n\t 'modulation',\n\t 'modulationEnvelope',\n\t 'detune'\n\t ]);\n\t };\n\t Tone.extend(Tone.AMSynth, Tone.Monophonic);\n\t /**\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.AMSynth.defaults = {\n\t 'harmonicity': 3,\n\t 'detune': 0,\n\t 'oscillator': { 'type': 'sine' },\n\t 'envelope': {\n\t 'attack': 0.01,\n\t 'decay': 0.01,\n\t 'sustain': 1,\n\t 'release': 0.5\n\t },\n\t 'modulation': { 'type': 'square' },\n\t 'modulationEnvelope': {\n\t 'attack': 0.5,\n\t 'decay': 0,\n\t 'sustain': 1,\n\t 'release': 0.5\n\t }\n\t };\n\t /**\n\t\t * trigger the attack portion of the note\n\t\t * \n\t\t * @param {Time} [time=now] the time the note will occur\n\t\t * @param {NormalRange} [velocity=1] the velocity of the note\n\t\t * @private\n\t\t * @returns {Tone.AMSynth} this\n\t\t */\n\t Tone.AMSynth.prototype._triggerEnvelopeAttack = function (time, velocity) {\n\t //the port glide\n\t time = this.toSeconds(time);\n\t //the envelopes\n\t this.envelope.triggerAttack(time, velocity);\n\t this.modulationEnvelope.triggerAttack(time, velocity);\n\t return this;\n\t };\n\t /**\n\t\t * trigger the release portion of the note\n\t\t * \n\t\t * @param {Time} [time=now] the time the note will release\n\t\t * @private\n\t\t * @returns {Tone.AMSynth} this\n\t\t */\n\t Tone.AMSynth.prototype._triggerEnvelopeRelease = function (time) {\n\t this.envelope.triggerRelease(time);\n\t this.modulationEnvelope.triggerRelease(time);\n\t return this;\n\t };\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.AMSynth} this\n\t\t */\n\t Tone.AMSynth.prototype.dispose = function () {\n\t Tone.Monophonic.prototype.dispose.call(this);\n\t this._writable([\n\t 'frequency',\n\t 'harmonicity',\n\t 'oscillator',\n\t 'envelope',\n\t 'modulation',\n\t 'modulationEnvelope',\n\t 'detune'\n\t ]);\n\t this._carrier.dispose();\n\t this._carrier = null;\n\t this._modulator.dispose();\n\t this._modulator = null;\n\t this.frequency.dispose();\n\t this.frequency = null;\n\t this.detune.dispose();\n\t this.detune = null;\n\t this.harmonicity.dispose();\n\t this.harmonicity = null;\n\t this._modulationScale.dispose();\n\t this._modulationScale = null;\n\t this._modulationNode.dispose();\n\t this._modulationNode = null;\n\t this.oscillator = null;\n\t this.envelope = null;\n\t this.modulationEnvelope = null;\n\t this.modulation = null;\n\t return this;\n\t };\n\t return Tone.AMSynth;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.MonoSynth is composed of one oscillator, one filter, and two envelopes.\n\t\t * The amplitude of the Tone.Oscillator and the cutoff frequency of the \n\t\t * Tone.Filter are controlled by Tone.Envelopes. \n\t\t * <img src=\"https://docs.google.com/drawings/d/1gaY1DF9_Hzkodqf8JI1Cg2VZfwSElpFQfI94IQwad38/pub?w=924&h=240\">\n\t\t * \n\t\t * @constructor\n\t\t * @extends {Tone.Monophonic}\n\t\t * @param {Object} [options] the options available for the synth \n\t\t * see defaults below\n\t\t * @example\n\t\t * var synth = new Tone.MonoSynth({\n\t\t * \t\"oscillator\" : {\n\t\t * \t\t\"type\" : \"square\"\n\t\t * },\n\t\t * \"envelope\" : {\n\t\t * \t\"attack\" : 0.1\n\t\t * }\n\t\t * }).toMaster();\n\t\t * synth.triggerAttackRelease(\"C4\", \"8n\");\n\t\t */\n\t Tone.MonoSynth = function (options) {\n\t //get the defaults\n\t options = this.defaultArg(options, Tone.MonoSynth.defaults);\n\t Tone.Monophonic.call(this, options);\n\t /**\n\t\t\t * The oscillator.\n\t\t\t * @type {Tone.OmniOscillator}\n\t\t\t */\n\t this.oscillator = new Tone.OmniOscillator(options.oscillator);\n\t /**\n\t\t\t * The frequency control.\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.frequency = this.oscillator.frequency;\n\t /**\n\t\t\t * The detune control.\n\t\t\t * @type {Cents}\n\t\t\t * @signal\n\t\t\t */\n\t this.detune = this.oscillator.detune;\n\t /**\n\t\t\t * The filter.\n\t\t\t * @type {Tone.Filter}\n\t\t\t */\n\t this.filter = new Tone.Filter(options.filter);\n\t /**\n\t\t\t * The filter envelope.\n\t\t\t * @type {Tone.FrequencyEnvelope}\n\t\t\t */\n\t this.filterEnvelope = new Tone.FrequencyEnvelope(options.filterEnvelope);\n\t /**\n\t\t\t * The amplitude envelope.\n\t\t\t * @type {Tone.AmplitudeEnvelope}\n\t\t\t */\n\t this.envelope = new Tone.AmplitudeEnvelope(options.envelope);\n\t //connect the oscillators to the output\n\t this.oscillator.chain(this.filter, this.envelope, this.output);\n\t //start the oscillators\n\t this.oscillator.start();\n\t //connect the filter envelope\n\t this.filterEnvelope.connect(this.filter.frequency);\n\t this._readOnly([\n\t 'oscillator',\n\t 'frequency',\n\t 'detune',\n\t 'filter',\n\t 'filterEnvelope',\n\t 'envelope'\n\t ]);\n\t };\n\t Tone.extend(Tone.MonoSynth, Tone.Monophonic);\n\t /**\n\t\t * @const\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.MonoSynth.defaults = {\n\t 'frequency': 'C4',\n\t 'detune': 0,\n\t 'oscillator': { 'type': 'square' },\n\t 'filter': {\n\t 'Q': 6,\n\t 'type': 'lowpass',\n\t 'rolloff': -24\n\t },\n\t 'envelope': {\n\t 'attack': 0.005,\n\t 'decay': 0.1,\n\t 'sustain': 0.9,\n\t 'release': 1\n\t },\n\t 'filterEnvelope': {\n\t 'attack': 0.06,\n\t 'decay': 0.2,\n\t 'sustain': 0.5,\n\t 'release': 2,\n\t 'baseFrequency': 200,\n\t 'octaves': 7,\n\t 'exponent': 2\n\t }\n\t };\n\t /**\n\t\t * start the attack portion of the envelope\n\t\t * @param {Time} [time=now] the time the attack should start\n\t\t * @param {NormalRange} [velocity=1] the velocity of the note (0-1)\n\t\t * @returns {Tone.MonoSynth} this\n\t\t * @private\n\t\t */\n\t Tone.MonoSynth.prototype._triggerEnvelopeAttack = function (time, velocity) {\n\t //the envelopes\n\t this.envelope.triggerAttack(time, velocity);\n\t this.filterEnvelope.triggerAttack(time);\n\t return this;\n\t };\n\t /**\n\t\t * start the release portion of the envelope\n\t\t * @param {Time} [time=now] the time the release should start\n\t\t * @returns {Tone.MonoSynth} this\n\t\t * @private\n\t\t */\n\t Tone.MonoSynth.prototype._triggerEnvelopeRelease = function (time) {\n\t this.envelope.triggerRelease(time);\n\t this.filterEnvelope.triggerRelease(time);\n\t return this;\n\t };\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.MonoSynth} this\n\t\t */\n\t Tone.MonoSynth.prototype.dispose = function () {\n\t Tone.Monophonic.prototype.dispose.call(this);\n\t this._writable([\n\t 'oscillator',\n\t 'frequency',\n\t 'detune',\n\t 'filter',\n\t 'filterEnvelope',\n\t 'envelope'\n\t ]);\n\t this.oscillator.dispose();\n\t this.oscillator = null;\n\t this.envelope.dispose();\n\t this.envelope = null;\n\t this.filterEnvelope.dispose();\n\t this.filterEnvelope = null;\n\t this.filter.dispose();\n\t this.filter = null;\n\t this.frequency = null;\n\t this.detune = null;\n\t return this;\n\t };\n\t return Tone.MonoSynth;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.DuoSynth is a monophonic synth composed of two \n\t\t * MonoSynths run in parallel with control over the \n\t\t * frequency ratio between the two voices and vibrato effect.\n\t\t * <img src=\"https://docs.google.com/drawings/d/1bL4GXvfRMMlqS7XyBm9CjL9KJPSUKbcdBNpqOlkFLxk/pub?w=1012&h=448\">\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.Monophonic}\n\t\t * @param {Object} [options] the options available for the synth \n\t\t * see defaults below\n\t\t * @example\n\t\t * var duoSynth = new Tone.DuoSynth().toMaster();\n\t\t * duoSynth.triggerAttackRelease(\"C4\", \"2n\");\n\t\t */\n\t Tone.DuoSynth = function (options) {\n\t options = this.defaultArg(options, Tone.DuoSynth.defaults);\n\t Tone.Monophonic.call(this, options);\n\t /**\n\t\t\t * the first voice\n\t\t\t * @type {Tone.MonoSynth}\n\t\t\t */\n\t this.voice0 = new Tone.MonoSynth(options.voice0);\n\t this.voice0.volume.value = -10;\n\t /**\n\t\t\t * the second voice\n\t\t\t * @type {Tone.MonoSynth}\n\t\t\t */\n\t this.voice1 = new Tone.MonoSynth(options.voice1);\n\t this.voice1.volume.value = -10;\n\t /**\n\t\t\t * The vibrato LFO. \n\t\t\t * @type {Tone.LFO}\n\t\t\t * @private\n\t\t\t */\n\t this._vibrato = new Tone.LFO(options.vibratoRate, -50, 50);\n\t this._vibrato.start();\n\t /**\n\t\t\t * the vibrato frequency\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.vibratoRate = this._vibrato.frequency;\n\t /**\n\t\t\t * the vibrato gain\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this._vibratoGain = new Tone.Gain(options.vibratoAmount, Tone.Type.Positive);\n\t /**\n\t\t\t * The amount of vibrato\n\t\t\t * @type {Positive}\n\t\t\t * @signal\n\t\t\t */\n\t this.vibratoAmount = this._vibratoGain.gain;\n\t /**\n\t\t\t * the frequency control\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.frequency = new Tone.Signal(440, Tone.Type.Frequency);\n\t /**\n\t\t\t * Harmonicity is the ratio between the two voices. A harmonicity of\n\t\t\t * 1 is no change. Harmonicity = 2 means a change of an octave. \n\t\t\t * @type {Positive}\n\t\t\t * @signal\n\t\t\t * @example\n\t\t\t * //pitch voice1 an octave below voice0\n\t\t\t * duoSynth.harmonicity.value = 0.5;\n\t\t\t */\n\t this.harmonicity = new Tone.Multiply(options.harmonicity);\n\t this.harmonicity.units = Tone.Type.Positive;\n\t //control the two voices frequency\n\t this.frequency.connect(this.voice0.frequency);\n\t this.frequency.chain(this.harmonicity, this.voice1.frequency);\n\t this._vibrato.connect(this._vibratoGain);\n\t this._vibratoGain.fan(this.voice0.detune, this.voice1.detune);\n\t this.voice0.connect(this.output);\n\t this.voice1.connect(this.output);\n\t this._readOnly([\n\t 'voice0',\n\t 'voice1',\n\t 'frequency',\n\t 'vibratoAmount',\n\t 'vibratoRate'\n\t ]);\n\t };\n\t Tone.extend(Tone.DuoSynth, Tone.Monophonic);\n\t /**\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.DuoSynth.defaults = {\n\t 'vibratoAmount': 0.5,\n\t 'vibratoRate': 5,\n\t 'harmonicity': 1.5,\n\t 'voice0': {\n\t 'volume': -10,\n\t 'portamento': 0,\n\t 'oscillator': { 'type': 'sine' },\n\t 'filterEnvelope': {\n\t 'attack': 0.01,\n\t 'decay': 0,\n\t 'sustain': 1,\n\t 'release': 0.5\n\t },\n\t 'envelope': {\n\t 'attack': 0.01,\n\t 'decay': 0,\n\t 'sustain': 1,\n\t 'release': 0.5\n\t }\n\t },\n\t 'voice1': {\n\t 'volume': -10,\n\t 'portamento': 0,\n\t 'oscillator': { 'type': 'sine' },\n\t 'filterEnvelope': {\n\t 'attack': 0.01,\n\t 'decay': 0,\n\t 'sustain': 1,\n\t 'release': 0.5\n\t },\n\t 'envelope': {\n\t 'attack': 0.01,\n\t 'decay': 0,\n\t 'sustain': 1,\n\t 'release': 0.5\n\t }\n\t }\n\t };\n\t /**\n\t\t * start the attack portion of the envelopes\n\t\t * \n\t\t * @param {Time} [time=now] the time the attack should start\n\t\t * @param {NormalRange} [velocity=1] the velocity of the note (0-1)\n\t\t * @returns {Tone.DuoSynth} this\n\t\t * @private\n\t\t */\n\t Tone.DuoSynth.prototype._triggerEnvelopeAttack = function (time, velocity) {\n\t time = this.toSeconds(time);\n\t this.voice0.envelope.triggerAttack(time, velocity);\n\t this.voice1.envelope.triggerAttack(time, velocity);\n\t this.voice0.filterEnvelope.triggerAttack(time);\n\t this.voice1.filterEnvelope.triggerAttack(time);\n\t return this;\n\t };\n\t /**\n\t\t * start the release portion of the envelopes\n\t\t * \n\t\t * @param {Time} [time=now] the time the release should start\n\t\t * @returns {Tone.DuoSynth} this\n\t\t * @private\n\t\t */\n\t Tone.DuoSynth.prototype._triggerEnvelopeRelease = function (time) {\n\t this.voice0.triggerRelease(time);\n\t this.voice1.triggerRelease(time);\n\t return this;\n\t };\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.DuoSynth} this\n\t\t */\n\t Tone.DuoSynth.prototype.dispose = function () {\n\t Tone.Monophonic.prototype.dispose.call(this);\n\t this._writable([\n\t 'voice0',\n\t 'voice1',\n\t 'frequency',\n\t 'vibratoAmount',\n\t 'vibratoRate'\n\t ]);\n\t this.voice0.dispose();\n\t this.voice0 = null;\n\t this.voice1.dispose();\n\t this.voice1 = null;\n\t this.frequency.dispose();\n\t this.frequency = null;\n\t this._vibratoGain.dispose();\n\t this._vibratoGain = null;\n\t this._vibrato = null;\n\t this.harmonicity.dispose();\n\t this.harmonicity = null;\n\t this.vibratoAmount.dispose();\n\t this.vibratoAmount = null;\n\t this.vibratoRate = null;\n\t return this;\n\t };\n\t return Tone.DuoSynth;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class FMSynth is composed of two Tone.Synths where one Tone.Synth modulates\n\t\t * the frequency of a second Tone.Synth. A lot of spectral content \n\t\t * can be explored using the modulationIndex parameter. Read more about\n\t\t * frequency modulation synthesis on [SoundOnSound](http://www.soundonsound.com/sos/apr00/articles/synthsecrets.htm).\n\t\t * <img src=\"https://docs.google.com/drawings/d/1h0PUDZXPgi4Ikx6bVT6oncrYPLluFKy7lj53puxj-DM/pub?w=902&h=462\">\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.Monophonic}\n\t\t * @param {Object} [options] the options available for the synth \n\t\t * see defaults below\n\t\t * @example\n\t\t * var fmSynth = new Tone.FMSynth().toMaster();\n\t\t * fmSynth.triggerAttackRelease(\"C5\", \"4n\");\n\t\t */\n\t Tone.FMSynth = function (options) {\n\t options = this.defaultArg(options, Tone.FMSynth.defaults);\n\t Tone.Monophonic.call(this, options);\n\t /**\n\t\t\t * The carrier voice.\n\t\t\t * @type {Tone.Synth}\n\t\t\t * @private\n\t\t\t */\n\t this._carrier = new Tone.Synth(options.carrier);\n\t this._carrier.volume.value = -10;\n\t /**\n\t\t\t * The carrier's oscillator\n\t\t\t * @type {Tone.Oscillator}\n\t\t\t */\n\t this.oscillator = this._carrier.oscillator;\n\t /**\n\t\t\t * The carrier's envelope\n\t\t\t * @type {Tone.Oscillator}\n\t\t\t */\n\t this.envelope = this._carrier.envelope.set(options.envelope);\n\t /**\n\t\t\t * The modulator voice.\n\t\t\t * @type {Tone.Synth}\n\t\t\t * @private\n\t\t\t */\n\t this._modulator = new Tone.Synth(options.modulator);\n\t this._modulator.volume.value = -10;\n\t /**\n\t\t\t * The modulator's oscillator which is applied\n\t\t\t * to the amplitude of the oscillator\n\t\t\t * @type {Tone.Oscillator}\n\t\t\t */\n\t this.modulation = this._modulator.oscillator.set(options.modulation);\n\t /**\n\t\t\t * The modulator's envelope\n\t\t\t * @type {Tone.Oscillator}\n\t\t\t */\n\t this.modulationEnvelope = this._modulator.envelope.set(options.modulationEnvelope);\n\t /**\n\t\t\t * The frequency control.\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.frequency = new Tone.Signal(440, Tone.Type.Frequency);\n\t /**\n\t\t\t * The detune in cents\n\t\t\t * @type {Cents}\n\t\t\t * @signal\n\t\t\t */\n\t this.detune = new Tone.Signal(options.detune, Tone.Type.Cents);\n\t /**\n\t\t\t * Harmonicity is the ratio between the two voices. A harmonicity of\n\t\t\t * 1 is no change. Harmonicity = 2 means a change of an octave. \n\t\t\t * @type {Positive}\n\t\t\t * @signal\n\t\t\t * @example\n\t\t\t * //pitch voice1 an octave below voice0\n\t\t\t * synth.harmonicity.value = 0.5;\n\t\t\t */\n\t this.harmonicity = new Tone.Multiply(options.harmonicity);\n\t this.harmonicity.units = Tone.Type.Positive;\n\t /**\n\t\t\t * The modulation index which essentially the depth or amount of the modulation. It is the \n\t\t\t * ratio of the frequency of the modulating signal (mf) to the amplitude of the \n\t\t\t * modulating signal (ma) -- as in ma/mf. \n\t\t\t *\t@type {Positive}\n\t\t\t *\t@signal\n\t\t\t */\n\t this.modulationIndex = new Tone.Multiply(options.modulationIndex);\n\t this.modulationIndex.units = Tone.Type.Positive;\n\t /**\n\t\t\t * the node where the modulation happens\n\t\t\t * @type {GainNode}\n\t\t\t * @private\n\t\t\t */\n\t this._modulationNode = new Tone.Gain(0);\n\t //control the two voices frequency\n\t this.frequency.connect(this._carrier.frequency);\n\t this.frequency.chain(this.harmonicity, this._modulator.frequency);\n\t this.frequency.chain(this.modulationIndex, this._modulationNode);\n\t this.detune.fan(this._carrier.detune, this._modulator.detune);\n\t this._modulator.connect(this._modulationNode.gain);\n\t this._modulationNode.connect(this._carrier.frequency);\n\t this._carrier.connect(this.output);\n\t this._readOnly([\n\t 'frequency',\n\t 'harmonicity',\n\t 'modulationIndex',\n\t 'oscillator',\n\t 'envelope',\n\t 'modulation',\n\t 'modulationEnvelope',\n\t 'detune'\n\t ]);\n\t };\n\t Tone.extend(Tone.FMSynth, Tone.Monophonic);\n\t /**\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.FMSynth.defaults = {\n\t 'harmonicity': 3,\n\t 'modulationIndex': 10,\n\t 'detune': 0,\n\t 'oscillator': { 'type': 'sine' },\n\t 'envelope': {\n\t 'attack': 0.01,\n\t 'decay': 0.01,\n\t 'sustain': 1,\n\t 'release': 0.5\n\t },\n\t 'modulation': { 'type': 'square' },\n\t 'modulationEnvelope': {\n\t 'attack': 0.5,\n\t 'decay': 0,\n\t 'sustain': 1,\n\t 'release': 0.5\n\t }\n\t };\n\t /**\n\t\t * \ttrigger the attack portion of the note\n\t\t * \n\t\t * @param {Time} [time=now] the time the note will occur\n\t\t * @param {number} [velocity=1] the velocity of the note\n\t\t * @returns {Tone.FMSynth} this\n\t\t * @private\n\t\t */\n\t Tone.FMSynth.prototype._triggerEnvelopeAttack = function (time, velocity) {\n\t time = this.toSeconds(time);\n\t //the envelopes\n\t this.envelope.triggerAttack(time, velocity);\n\t this.modulationEnvelope.triggerAttack(time);\n\t return this;\n\t };\n\t /**\n\t\t * trigger the release portion of the note\n\t\t * \n\t\t * @param {Time} [time=now] the time the note will release\n\t\t * @returns {Tone.FMSynth} this\n\t\t * @private\n\t\t */\n\t Tone.FMSynth.prototype._triggerEnvelopeRelease = function (time) {\n\t time = this.toSeconds(time);\n\t this.envelope.triggerRelease(time);\n\t this.modulationEnvelope.triggerRelease(time);\n\t return this;\n\t };\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.FMSynth} this\n\t\t */\n\t Tone.FMSynth.prototype.dispose = function () {\n\t Tone.Monophonic.prototype.dispose.call(this);\n\t this._writable([\n\t 'frequency',\n\t 'harmonicity',\n\t 'modulationIndex',\n\t 'oscillator',\n\t 'envelope',\n\t 'modulation',\n\t 'modulationEnvelope',\n\t 'detune'\n\t ]);\n\t this._carrier.dispose();\n\t this._carrier = null;\n\t this._modulator.dispose();\n\t this._modulator = null;\n\t this.frequency.dispose();\n\t this.frequency = null;\n\t this.detune.dispose();\n\t this.detune = null;\n\t this.modulationIndex.dispose();\n\t this.modulationIndex = null;\n\t this.harmonicity.dispose();\n\t this.harmonicity = null;\n\t this._modulationNode.dispose();\n\t this._modulationNode = null;\n\t this.oscillator = null;\n\t this.envelope = null;\n\t this.modulationEnvelope = null;\n\t this.modulation = null;\n\t return this;\n\t };\n\t return Tone.FMSynth;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.MembraneSynth makes kick and tom sounds using a single oscillator\n\t\t * with an amplitude envelope and frequency ramp. A Tone.OmniOscillator\n\t\t * is routed through a Tone.AmplitudeEnvelope to the output. The drum\n\t\t * quality of the sound comes from the frequency envelope applied\n\t\t * during during Tone.MembraneSynth.triggerAttack(note). The frequency\n\t\t * envelope starts at <code>note * .octaves</code> and ramps to \n\t\t * <code>note</code> over the duration of <code>.pitchDecay</code>. \n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.Instrument}\n\t\t * @param {Object} [options] the options available for the synth \n\t\t * see defaults below\n\t\t * @example\n\t\t * var synth = new Tone.MembraneSynth().toMaster();\n\t\t * synth.triggerAttackRelease(\"C2\", \"8n\");\n\t\t */\n\t Tone.MembraneSynth = function (options) {\n\t options = this.defaultArg(options, Tone.MembraneSynth.defaults);\n\t Tone.Instrument.call(this, options);\n\t /**\n\t\t\t * The oscillator.\n\t\t\t * @type {Tone.OmniOscillator}\n\t\t\t */\n\t this.oscillator = new Tone.OmniOscillator(options.oscillator).start();\n\t /**\n\t\t\t * The amplitude envelope.\n\t\t\t * @type {Tone.AmplitudeEnvelope}\n\t\t\t */\n\t this.envelope = new Tone.AmplitudeEnvelope(options.envelope);\n\t /**\n\t\t\t * The number of octaves the pitch envelope ramps.\n\t\t\t * @type {Positive}\n\t\t\t */\n\t this.octaves = options.octaves;\n\t /**\n\t\t\t * The amount of time the frequency envelope takes. \n\t\t\t * @type {Time}\n\t\t\t */\n\t this.pitchDecay = options.pitchDecay;\n\t this.oscillator.chain(this.envelope, this.output);\n\t this._readOnly([\n\t 'oscillator',\n\t 'envelope'\n\t ]);\n\t };\n\t Tone.extend(Tone.MembraneSynth, Tone.Instrument);\n\t /**\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.MembraneSynth.defaults = {\n\t 'pitchDecay': 0.05,\n\t 'octaves': 10,\n\t 'oscillator': { 'type': 'sine' },\n\t 'envelope': {\n\t 'attack': 0.001,\n\t 'decay': 0.4,\n\t 'sustain': 0.01,\n\t 'release': 1.4,\n\t 'attackCurve': 'exponential'\n\t }\n\t };\n\t /**\n\t\t * Trigger the note at the given time with the given velocity. \n\t\t * \n\t\t * @param {Frequency} note the note\n\t\t * @param {Time} [time=now] the time, if not given is now\n\t\t * @param {number} [velocity=1] velocity defaults to 1\n\t\t * @returns {Tone.MembraneSynth} this\n\t\t * @example\n\t\t * kick.triggerAttack(60);\n\t\t */\n\t Tone.MembraneSynth.prototype.triggerAttack = function (note, time, velocity) {\n\t time = this.toSeconds(time);\n\t note = this.toFrequency(note);\n\t var maxNote = note * this.octaves;\n\t this.oscillator.frequency.setValueAtTime(maxNote, time);\n\t this.oscillator.frequency.exponentialRampToValueAtTime(note, time + this.toSeconds(this.pitchDecay));\n\t this.envelope.triggerAttack(time, velocity);\n\t return this;\n\t };\n\t /**\n\t\t * Trigger the release portion of the note.\n\t\t * \n\t\t * @param {Time} [time=now] the time the note will release\n\t\t * @returns {Tone.MembraneSynth} this\n\t\t */\n\t Tone.MembraneSynth.prototype.triggerRelease = function (time) {\n\t this.envelope.triggerRelease(time);\n\t return this;\n\t };\n\t /**\n\t\t * Clean up.\n\t\t * @returns {Tone.MembraneSynth} this\n\t\t */\n\t Tone.MembraneSynth.prototype.dispose = function () {\n\t Tone.Instrument.prototype.dispose.call(this);\n\t this._writable([\n\t 'oscillator',\n\t 'envelope'\n\t ]);\n\t this.oscillator.dispose();\n\t this.oscillator = null;\n\t this.envelope.dispose();\n\t this.envelope = null;\n\t return this;\n\t };\n\t return Tone.MembraneSynth;\n\t});\n\tModule(function (Tone) {\n\t /**\n\t\t * Inharmonic ratio of frequencies based on the Roland TR-808\n\t\t * Taken from https://ccrma.stanford.edu/papers/tr-808-cymbal-physically-informed-circuit-bendable-digital-model\n\t\t * @private\n\t\t * @static\n\t\t * @type {Array}\n\t\t */\n\t var inharmRatios = [\n\t 1,\n\t 1.483,\n\t 1.932,\n\t 2.546,\n\t 2.63,\n\t 3.897\n\t ];\n\t /**\n\t\t * @class A highly inharmonic and spectrally complex source with a highpass filter\n\t\t * and amplitude envelope which is good for making metalophone sounds. Based\n\t\t * on CymbalSynth by [@polyrhythmatic](https://github.com/polyrhythmatic).\n\t\t * Inspiration from [Sound on Sound](http://www.soundonsound.com/sos/jul02/articles/synthsecrets0702.asp).\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.Instrument}\n\t\t * @param {Object} [options] The options availble for the synth\n\t\t * see defaults below\n\t\t */\n\t Tone.MetalSynth = function (options) {\n\t options = this.defaultArg(options, Tone.MetalSynth.defaults);\n\t Tone.Instrument.call(this, options);\n\t /**\n\t\t\t * The frequency of the cymbal\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.frequency = new Tone.Signal(options.frequency, Tone.Type.Frequency);\n\t /**\n\t\t\t * The array of FMOscillators\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._oscillators = [];\n\t /**\n\t\t\t * The frequency multipliers\n\t\t\t * @type {Array}\n\t\t\t * @private\n\t\t\t */\n\t this._freqMultipliers = [];\n\t /**\n\t\t\t * The amplitude for the body\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this._amplitue = new Tone.Gain(0).connect(this.output);\n\t /**\n\t\t\t * highpass the output\n\t\t\t * @type {Tone.Filter}\n\t\t\t * @private\n\t\t\t */\n\t this._highpass = new Tone.Filter({\n\t 'type': 'highpass',\n\t 'Q': -3.0102999566398125\n\t }).connect(this._amplitue);\n\t /**\n\t\t\t * The number of octaves the highpass\n\t\t\t * filter frequency ramps\n\t\t\t * @type {Number}\n\t\t\t * @private\n\t\t\t */\n\t this._octaves = options.octaves;\n\t /**\n\t\t\t * Scale the body envelope\n\t\t\t * for the bandpass\n\t\t\t * @type {Tone.Scale}\n\t\t\t * @private\n\t\t\t */\n\t this._filterFreqScaler = new Tone.Scale(options.resonance, 7000);\n\t /**\n\t\t\t * The envelope which is connected both to the \n\t\t\t * amplitude and highpass filter's cutoff frequency\n\t\t\t * @type {Tone.Envelope}\n\t\t\t */\n\t this.envelope = new Tone.Envelope({\n\t 'attack': options.envelope.attack,\n\t 'attackCurve': 'linear',\n\t 'decay': options.envelope.decay,\n\t 'sustain': 0,\n\t 'release': options.envelope.release\n\t }).chain(this._filterFreqScaler, this._highpass.frequency);\n\t this.envelope.connect(this._amplitue.gain);\n\t for (var i = 0; i < inharmRatios.length; i++) {\n\t var osc = new Tone.FMOscillator({\n\t 'type': 'square',\n\t 'modulationType': 'square',\n\t 'harmonicity': options.harmonicity,\n\t 'modulationIndex': options.modulationIndex\n\t });\n\t osc.connect(this._highpass).start(0);\n\t this._oscillators[i] = osc;\n\t var mult = new Tone.Multiply(inharmRatios[i]);\n\t this._freqMultipliers[i] = mult;\n\t this.frequency.chain(mult, osc.frequency);\n\t }\n\t //set the octaves\n\t this.octaves = options.octaves;\n\t };\n\t Tone.extend(Tone.MetalSynth, Tone.Instrument);\n\t /**\n\t\t * default values\n\t\t * @static\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.MetalSynth.defaults = {\n\t 'frequency': 200,\n\t 'envelope': {\n\t 'attack': 0.001,\n\t 'decay': 1.4,\n\t 'release': 0.2\n\t },\n\t 'harmonicity': 5.1,\n\t 'modulationIndex': 32,\n\t 'resonance': 4000,\n\t 'octaves': 1.5\n\t };\n\t /**\n\t\t * Trigger the attack.\n\t\t * @param {Time} time When the attack should be triggered.\n\t\t * @param {NormalRange=1} velocity The velocity that the envelope should be triggered at.\n\t\t * @return {Tone.MetalSynth} this\n\t\t */\n\t Tone.MetalSynth.prototype.triggerAttack = function (time, vel) {\n\t time = this.toSeconds(time);\n\t vel = this.defaultArg(vel, 1);\n\t this.envelope.triggerAttack(time, vel);\n\t return this;\n\t };\n\t /**\n\t\t * Trigger the release of the envelope.\n\t\t * @param {Time} time When the release should be triggered.\n\t\t * @return {Tone.MetalSynth} this\n\t\t */\n\t Tone.MetalSynth.prototype.triggerRelease = function (time) {\n\t time = this.toSeconds(time);\n\t this.envelope.triggerRelease(time);\n\t return this;\n\t };\n\t /**\n\t\t * Trigger the attack and release of the envelope after the given \n\t\t * duration. \n\t\t * @param {Time} duration The duration before triggering the release\n\t\t * @param {Time} time When the attack should be triggered.\n\t\t * @param {NormalRange=1} velocity The velocity that the envelope should be triggered at.\n\t\t * @return {Tone.MetalSynth} this\n\t\t */\n\t Tone.MetalSynth.prototype.triggerAttackRelease = function (duration, time, velocity) {\n\t time = this.toSeconds(time);\n\t duration = this.toSeconds(duration);\n\t this.triggerAttack(time, velocity);\n\t this.triggerRelease(time + duration);\n\t return this;\n\t };\n\t /**\n\t\t * The modulationIndex of the oscillators which make up the source.\n\t\t * see Tone.FMOscillator.modulationIndex\n\t\t * @memberOf Tone.MetalSynth#\n\t\t * @type {Positive}\n\t\t * @name modulationIndex\n\t\t */\n\t Object.defineProperty(Tone.MetalSynth.prototype, 'modulationIndex', {\n\t get: function () {\n\t return this._oscillators[0].modulationIndex.value;\n\t },\n\t set: function (val) {\n\t for (var i = 0; i < this._oscillators.length; i++) {\n\t this._oscillators[i].modulationIndex.value = val;\n\t }\n\t }\n\t });\n\t /**\n\t\t * The harmonicity of the oscillators which make up the source.\n\t\t * see Tone.FMOscillator.harmonicity\n\t\t * @memberOf Tone.MetalSynth#\n\t\t * @type {Positive}\n\t\t * @name harmonicity\n\t\t */\n\t Object.defineProperty(Tone.MetalSynth.prototype, 'harmonicity', {\n\t get: function () {\n\t return this._oscillators[0].harmonicity.value;\n\t },\n\t set: function (val) {\n\t for (var i = 0; i < this._oscillators.length; i++) {\n\t this._oscillators[i].harmonicity.value = val;\n\t }\n\t }\n\t });\n\t /**\n\t\t * The frequency of the highpass filter attached to the envelope\n\t\t * @memberOf Tone.MetalSynth#\n\t\t * @type {Frequency}\n\t\t * @name resonance\n\t\t */\n\t Object.defineProperty(Tone.MetalSynth.prototype, 'resonance', {\n\t get: function () {\n\t return this._filterFreqScaler.min;\n\t },\n\t set: function (val) {\n\t this._filterFreqScaler.min = val;\n\t this.octaves = this._octaves;\n\t }\n\t });\n\t /**\n\t\t * The number of octaves above the \"resonance\" frequency\n\t\t * that the filter ramps during the attack/decay envelope\n\t\t * @memberOf Tone.MetalSynth#\n\t\t * @type {Number}\n\t\t * @name octaves\n\t\t */\n\t Object.defineProperty(Tone.MetalSynth.prototype, 'octaves', {\n\t get: function () {\n\t return this._octaves;\n\t },\n\t set: function (octs) {\n\t this._octaves = octs;\n\t this._filterFreqScaler.max = this._filterFreqScaler.min * Math.pow(2, octs);\n\t }\n\t });\n\t /**\n\t\t * Clean up\n\t\t * @returns {Tone.MetalSynth} this\n\t\t */\n\t Tone.MetalSynth.prototype.dispose = function () {\n\t Tone.Instrument.prototype.dispose.call(this);\n\t for (var i = 0; i < this._oscillators.length; i++) {\n\t this._oscillators[i].dispose();\n\t this._freqMultipliers[i].dispose();\n\t }\n\t this._oscillators = null;\n\t this._freqMultipliers = null;\n\t this.frequency.dispose();\n\t this.frequency = null;\n\t this._filterFreqScaler.dispose();\n\t this._filterFreqScaler = null;\n\t this._amplitue.dispose();\n\t this._amplitue = null;\n\t this.envelope.dispose();\n\t this.envelope = null;\n\t this._highpass.dispose();\n\t this._highpass = null;\n\t };\n\t return Tone.MetalSynth;\n\t});\n\tModule(function (Tone) {\n\t /**\n\t\t * BufferSource polyfill\n\t\t */\n\t if (window.AudioBufferSourceNode && !AudioBufferSourceNode.prototype.start) {\n\t AudioBufferSourceNode.prototype.start = AudioBufferSourceNode.prototype.noteGrainOn;\n\t AudioBufferSourceNode.prototype.stop = AudioBufferSourceNode.prototype.noteOff;\n\t }\n\t /**\n\t\t * @class Wrapper around the native BufferSourceNode.\n\t\t * @param {AudioBuffer|Tone.Buffer} buffer The buffer to play\n\t\t * @param {Function} onended The callback to invoke when the \n\t\t * buffer is done playing.\n\t\t */\n\t Tone.BufferSource = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'buffer',\n\t 'onended'\n\t ], Tone.BufferSource.defaults);\n\t /**\n\t\t\t * The callback to invoke after the \n\t\t\t * buffer source is done playing. \n\t\t\t * @type {Function}\n\t\t\t */\n\t this.onended = options.onended;\n\t /**\n\t\t\t * The time that the buffer was started.\n\t\t\t * @type {Number}\n\t\t\t * @private\n\t\t\t */\n\t this._startTime = -1;\n\t /**\n\t\t\t * The time that the buffer is scheduled to stop.\n\t\t\t * @type {Number}\n\t\t\t * @private\n\t\t\t */\n\t this._stopTime = -1;\n\t /**\n\t\t\t * The gain node which envelopes the BufferSource\n\t\t\t * @type {Tone.Gain}\n\t\t\t * @private\n\t\t\t */\n\t this._gainNode = this.output = new Tone.Gain();\n\t /**\n\t\t\t * The buffer source\n\t\t\t * @type {AudioBufferSourceNode}\n\t\t\t * @private\n\t\t\t */\n\t this._source = this.context.createBufferSource();\n\t this._source.connect(this._gainNode);\n\t /**\n\t\t\t * The playbackRate of the buffer\n\t\t\t * @type {Positive}\n\t\t\t * @signal\n\t\t\t */\n\t this.playbackRate = new Tone.Param(this._source.playbackRate, Tone.Type.Positive);\n\t /**\n\t\t\t * The fadeIn time of the amplitude envelope.\n\t\t\t * @type {Time}\n\t\t\t */\n\t this.fadeIn = options.fadeIn;\n\t /**\n\t\t\t * The fadeOut time of the amplitude envelope.\n\t\t\t * @type {Time}\n\t\t\t */\n\t this.fadeOut = options.fadeOut;\n\t /**\n\t\t\t * The value that the buffer ramps to\n\t\t\t * @type {Gain}\n\t\t\t * @private\n\t\t\t */\n\t this._gain = 1;\n\t /**\n\t\t\t * The onended timeout\n\t\t\t * @type {Number}\n\t\t\t * @private\n\t\t\t */\n\t this._onendedTimeout = -1;\n\t //set the buffer initially\n\t if (!this.isUndef(options.buffer)) {\n\t this.buffer = options.buffer;\n\t }\n\t this.loop = options.loop;\n\t };\n\t Tone.extend(Tone.BufferSource);\n\t /**\n\t\t * The defaults\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.BufferSource.defaults = {\n\t 'onended': Tone.noOp,\n\t 'fadeIn': 0,\n\t 'fadeOut': 0\n\t };\n\t /**\n\t\t * Returns the playback state of the source, either \"started\" or \"stopped\".\n\t\t * @type {Tone.State}\n\t\t * @readOnly\n\t\t * @memberOf Tone.BufferSource#\n\t\t * @name state\n\t\t */\n\t Object.defineProperty(Tone.BufferSource.prototype, 'state', {\n\t get: function () {\n\t var now = this.now();\n\t if (this._startTime !== -1 && now >= this._startTime && now < this._stopTime) {\n\t return Tone.State.Started;\n\t } else {\n\t return Tone.State.Stopped;\n\t }\n\t }\n\t });\n\t /**\n\t\t * Start the buffer\n\t\t * @param {Time} [startTime=now] When the player should start.\n\t\t * @param {Time} [offset=0] The offset from the beginning of the sample\n\t\t * to start at. \n\t\t * @param {Time=} duration How long the sample should play. If no duration\n\t\t * is given, it will default to the full length \n\t\t * of the sample (minus any offset)\n\t\t * @param {Gain} [gain=1] The gain to play the buffer back at.\n\t\t * @param {Time=} fadeInTime The optional fadeIn ramp time.\n\t\t * @return {Tone.BufferSource} this\n\t\t */\n\t Tone.BufferSource.prototype.start = function (time, offset, duration, gain, fadeInTime) {\n\t if (this._startTime !== -1) {\n\t throw new Error('Tone.BufferSource: can only be started once.');\n\t }\n\t if (this.buffer) {\n\t time = this.toSeconds(time);\n\t //if it's a loop the default offset is the loopstart point\n\t if (this.loop) {\n\t offset = this.defaultArg(offset, this.loopStart);\n\t } else {\n\t //otherwise the default offset is 0\n\t offset = this.defaultArg(offset, 0);\n\t }\n\t offset = this.toSeconds(offset);\n\t //the values in seconds\n\t time = this.toSeconds(time);\n\t this._source.start(time, offset);\n\t gain = this.defaultArg(gain, 1);\n\t this._gain = gain;\n\t //the fadeIn time\n\t if (this.isUndef(fadeInTime)) {\n\t fadeInTime = this.toSeconds(this.fadeIn);\n\t } else {\n\t fadeInTime = this.toSeconds(fadeInTime);\n\t }\n\t if (fadeInTime > 0) {\n\t this._gainNode.gain.setValueAtTime(0, time);\n\t this._gainNode.gain.linearRampToValueAtTime(this._gain, time + fadeInTime);\n\t } else {\n\t this._gainNode.gain.setValueAtTime(gain, time);\n\t }\n\t this._startTime = time + fadeInTime;\n\t if (!this.isUndef(duration)) {\n\t duration = this.defaultArg(duration, this.buffer.duration - offset);\n\t duration = this.toSeconds(duration);\n\t this.stop(time + duration + fadeInTime, fadeInTime);\n\t }\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Stop the buffer. Optionally add a ramp time to fade the \n\t\t * buffer out. \n\t\t * @param {Time=} time The time the buffer should stop.\n\t\t * @param {Time=} fadeOutTime How long the gain should fade out for\n\t\t * @return {Tone.BufferSource} this\n\t\t */\n\t Tone.BufferSource.prototype.stop = function (time, fadeOutTime) {\n\t if (this.buffer) {\n\t time = this.toSeconds(time);\n\t //the fadeOut time\n\t if (this.isUndef(fadeOutTime)) {\n\t fadeOutTime = this.toSeconds(this.fadeOut);\n\t } else {\n\t fadeOutTime = this.toSeconds(fadeOutTime);\n\t }\n\t this._stopTime = time + fadeOutTime;\n\t //cancel the end curve\n\t this._gainNode.gain.cancelScheduledValues(this._startTime + this.sampleTime);\n\t //set a new one\n\t if (fadeOutTime > 0) {\n\t this._gainNode.gain.setValueAtTime(this._gain, time);\n\t this._gainNode.gain.linearRampToValueAtTime(0, time + fadeOutTime);\n\t time += fadeOutTime;\n\t } else {\n\t this._gainNode.gain.setValueAtTime(0, time);\n\t }\n\t // fix for safari bug and old FF\n\t if (!this.isNumber(this._source.playbackState) || this._source.playbackState === 2) {\n\t this._source.stop(time);\n\t }\n\t clearTimeout(this._onendedTimeout);\n\t this._onendedTimeout = setTimeout(this._onended.bind(this), (this._stopTime - this.now()) * 1000);\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Internal callback when the buffer is ended. \n\t\t * Invokes `onended` and disposes the node.\n\t\t * @private\n\t\t */\n\t Tone.BufferSource.prototype._onended = function () {\n\t this.onended(this);\n\t this.dispose();\n\t };\n\t /**\n\t\t * If loop is true, the loop will start at this position. \n\t\t * @memberOf Tone.BufferSource#\n\t\t * @type {Time}\n\t\t * @name loopStart\n\t\t */\n\t Object.defineProperty(Tone.BufferSource.prototype, 'loopStart', {\n\t get: function () {\n\t return this._source.loopStart;\n\t },\n\t set: function (loopStart) {\n\t this._source.loopStart = this.toSeconds(loopStart);\n\t }\n\t });\n\t /**\n\t\t * If loop is true, the loop will end at this position.\n\t\t * @memberOf Tone.BufferSource#\n\t\t * @type {Time}\n\t\t * @name loopEnd\n\t\t */\n\t Object.defineProperty(Tone.BufferSource.prototype, 'loopEnd', {\n\t get: function () {\n\t return this._source.loopEnd;\n\t },\n\t set: function (loopEnd) {\n\t this._source.loopEnd = this.toSeconds(loopEnd);\n\t }\n\t });\n\t /**\n\t\t * The audio buffer belonging to the player. \n\t\t * @memberOf Tone.BufferSource#\n\t\t * @type {AudioBuffer}\n\t\t * @name buffer\n\t\t */\n\t Object.defineProperty(Tone.BufferSource.prototype, 'buffer', {\n\t get: function () {\n\t if (this._source) {\n\t return this._source.buffer;\n\t } else {\n\t return null;\n\t }\n\t },\n\t set: function (buffer) {\n\t if (buffer instanceof Tone.Buffer) {\n\t this._source.buffer = buffer.get();\n\t } else {\n\t this._source.buffer = buffer;\n\t }\n\t }\n\t });\n\t /**\n\t\t * If the buffer should loop once it's over. \n\t\t * @memberOf Tone.BufferSource#\n\t\t * @type {boolean}\n\t\t * @name loop\n\t\t */\n\t Object.defineProperty(Tone.BufferSource.prototype, 'loop', {\n\t get: function () {\n\t return this._source.loop;\n\t },\n\t set: function (loop) {\n\t this._source.loop = loop;\n\t }\n\t });\n\t /**\n\t\t * Clean up.\n\t\t * @return {Tone.BufferSource} this\n\t\t */\n\t Tone.BufferSource.prototype.dispose = function () {\n\t this.onended = null;\n\t if (this._source) {\n\t this._source.disconnect();\n\t this._source = null;\n\t }\n\t if (this._gainNode) {\n\t this._gainNode.dispose();\n\t this._gainNode = null;\n\t }\n\t this._startTime = -1;\n\t this.playbackRate = null;\n\t this.output = null;\n\t clearTimeout(this._onendedTimeout);\n\t return this;\n\t };\n\t return Tone.BufferSource;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Noise is a noise generator. It uses looped noise buffers to save on performance.\n\t\t * Tone.Noise supports the noise types: \"pink\", \"white\", and \"brown\". Read more about\n\t\t * colors of noise on [Wikipedia](https://en.wikipedia.org/wiki/Colors_of_noise).\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.Source}\n\t\t * @param {string} type the noise type (white|pink|brown)\n\t\t * @example\n\t\t * //initialize the noise and start\n\t\t * var noise = new Tone.Noise(\"pink\").start();\n\t\t * \n\t\t * //make an autofilter to shape the noise\n\t\t * var autoFilter = new Tone.AutoFilter({\n\t\t * \t\"frequency\" : \"8m\", \n\t\t * \t\"min\" : 800, \n\t\t * \t\"max\" : 15000\n\t\t * }).connect(Tone.Master);\n\t\t * \n\t\t * //connect the noise\n\t\t * noise.connect(autoFilter);\n\t\t * //start the autofilter LFO\n\t\t * autoFilter.start()\n\t\t */\n\t Tone.Noise = function () {\n\t var options = this.optionsObject(arguments, ['type'], Tone.Noise.defaults);\n\t Tone.Source.call(this, options);\n\t /**\n\t\t\t * @private\n\t\t\t * @type {AudioBufferSourceNode}\n\t\t\t */\n\t this._source = null;\n\t /**\n\t\t\t * the buffer\n\t\t\t * @private\n\t\t\t * @type {AudioBuffer}\n\t\t\t */\n\t this._type = options.type;\n\t /**\n\t\t\t * The playback rate of the noise. Affects\n\t\t\t * the \"frequency\" of the noise.\n\t\t\t * @type {Positive}\n\t\t\t * @signal\n\t\t\t */\n\t this._playbackRate = options.playbackRate;\n\t };\n\t Tone.extend(Tone.Noise, Tone.Source);\n\t /**\n\t\t * the default parameters\n\t\t *\n\t\t * @static\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.Noise.defaults = {\n\t 'type': 'white',\n\t 'playbackRate': 1\n\t };\n\t /**\n\t\t * The type of the noise. Can be \"white\", \"brown\", or \"pink\". \n\t\t * @memberOf Tone.Noise#\n\t\t * @type {string}\n\t\t * @name type\n\t\t * @example\n\t\t * noise.type = \"white\";\n\t\t */\n\t Object.defineProperty(Tone.Noise.prototype, 'type', {\n\t get: function () {\n\t return this._type;\n\t },\n\t set: function (type) {\n\t if (this._type !== type) {\n\t if (type in _noiseBuffers) {\n\t this._type = type;\n\t //if it's playing, stop and restart it\n\t if (this.state === Tone.State.Started) {\n\t var now = this.now() + this.blockTime;\n\t this._stop(now);\n\t this._start(now);\n\t }\n\t } else {\n\t throw new TypeError('Tone.Noise: invalid type: ' + type);\n\t }\n\t }\n\t }\n\t });\n\t /**\n\t\t * The playback rate of the noise. Affects\n\t\t * the \"frequency\" of the noise.\n\t\t * @type {Positive}\n\t\t * @signal\n\t\t */\n\t Object.defineProperty(Tone.Noise.prototype, 'playbackRate', {\n\t get: function () {\n\t return this._playbackRate;\n\t },\n\t set: function (rate) {\n\t this._playbackRate = rate;\n\t if (this._source) {\n\t this._source.playbackRate.value = rate;\n\t }\n\t }\n\t });\n\t /**\n\t\t * internal start method\n\t\t *\n\t\t * @param {Time} time\n\t\t * @private\n\t\t */\n\t Tone.Noise.prototype._start = function (time) {\n\t var buffer = _noiseBuffers[this._type];\n\t this._source = new Tone.BufferSource(buffer).connect(this.output);\n\t this._source.loop = true;\n\t this._source.playbackRate.value = this._playbackRate;\n\t this._source.start(this.toSeconds(time), Math.random() * (buffer.duration - 0.001));\n\t };\n\t /**\n\t\t * internal stop method\n\t\t *\n\t\t * @param {Time} time\n\t\t * @private\n\t\t */\n\t Tone.Noise.prototype._stop = function (time) {\n\t if (this._source) {\n\t this._source.stop(this.toSeconds(time));\n\t this._source = null;\n\t }\n\t };\n\t /**\n\t\t * Clean up.\n\t\t * @returns {Tone.Noise} this\n\t\t */\n\t Tone.Noise.prototype.dispose = function () {\n\t Tone.Source.prototype.dispose.call(this);\n\t if (this._source !== null) {\n\t this._source.disconnect();\n\t this._source = null;\n\t }\n\t this._buffer = null;\n\t return this;\n\t };\n\t ///////////////////////////////////////////////////////////////////////////\n\t // THE BUFFERS\n\t ///////////////////////////////////////////////////////////////////////////\n\t //Noise buffer stats\n\t var bufferLength = 44100 * 5;\n\t var channels = 2;\n\t /**\n\t\t *\tthe noise arrays. only generated once on init\n\t\t * @static\n\t\t * @private\n\t\t * @type {Array}\n\t\t * borrowed heavily from https://github.com/zacharydenton/noise.js \n\t\t * (c) 2013 Zach Denton (MIT)\n\t\t */\n\t var _noiseArrays = {\n\t 'pink': function () {\n\t var buffer = [];\n\t for (var channelNum = 0; channelNum < channels; channelNum++) {\n\t var channel = new Float32Array(bufferLength);\n\t buffer[channelNum] = channel;\n\t var b0, b1, b2, b3, b4, b5, b6;\n\t b0 = b1 = b2 = b3 = b4 = b5 = b6 = 0;\n\t for (var i = 0; i < bufferLength; i++) {\n\t var white = Math.random() * 2 - 1;\n\t b0 = 0.99886 * b0 + white * 0.0555179;\n\t b1 = 0.99332 * b1 + white * 0.0750759;\n\t b2 = 0.969 * b2 + white * 0.153852;\n\t b3 = 0.8665 * b3 + white * 0.3104856;\n\t b4 = 0.55 * b4 + white * 0.5329522;\n\t b5 = -0.7616 * b5 - white * 0.016898;\n\t channel[i] = b0 + b1 + b2 + b3 + b4 + b5 + b6 + white * 0.5362;\n\t channel[i] *= 0.11;\n\t // (roughly) compensate for gain\n\t b6 = white * 0.115926;\n\t }\n\t }\n\t return buffer;\n\t }(),\n\t 'brown': function () {\n\t var buffer = [];\n\t for (var channelNum = 0; channelNum < channels; channelNum++) {\n\t var channel = new Float32Array(bufferLength);\n\t buffer[channelNum] = channel;\n\t var lastOut = 0;\n\t for (var i = 0; i < bufferLength; i++) {\n\t var white = Math.random() * 2 - 1;\n\t channel[i] = (lastOut + 0.02 * white) / 1.02;\n\t lastOut = channel[i];\n\t channel[i] *= 3.5; // (roughly) compensate for gain\n\t }\n\t }\n\t return buffer;\n\t }(),\n\t 'white': function () {\n\t var buffer = [];\n\t for (var channelNum = 0; channelNum < channels; channelNum++) {\n\t var channel = new Float32Array(bufferLength);\n\t buffer[channelNum] = channel;\n\t for (var i = 0; i < bufferLength; i++) {\n\t channel[i] = Math.random() * 2 - 1;\n\t }\n\t }\n\t return buffer;\n\t }()\n\t };\n\t /**\n\t\t *\tstatic noise buffers\n\t\t * @static\n\t\t * @private\n\t\t * @type {Tone.Buffer}\n\t\t */\n\t var _noiseBuffers = {};\n\t //create the Tone.Buffers\n\t function createBuffers() {\n\t for (var type in _noiseArrays) {\n\t _noiseBuffers[type] = new Tone.Buffer().fromArray(_noiseArrays[type]);\n\t }\n\t }\n\t createBuffers();\n\t Tone.Context.on('init', createBuffers);\n\t return Tone.Noise;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.NoiseSynth is composed of a noise generator (Tone.Noise), one filter (Tone.Filter), \n\t\t * and two envelopes (Tone.Envelop). One envelope controls the amplitude\n\t\t * of the noise and the other is controls the cutoff frequency of the filter. \n\t\t * <img src=\"https://docs.google.com/drawings/d/1rqzuX9rBlhT50MRvD2TKml9bnZhcZmzXF1rf_o7vdnE/pub?w=918&h=242\">\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.Instrument}\n\t\t * @param {Object} [options] the options available for the synth \n\t\t * see defaults below\n\t\t * @example\n\t\t * var noiseSynth = new Tone.NoiseSynth().toMaster();\n\t\t * noiseSynth.triggerAttackRelease(\"8n\");\n\t\t */\n\t Tone.NoiseSynth = function (options) {\n\t //get the defaults\n\t options = this.defaultArg(options, Tone.NoiseSynth.defaults);\n\t Tone.Instrument.call(this, options);\n\t /**\n\t\t\t * The noise source.\n\t\t\t * @type {Tone.Noise}\n\t\t\t * @example\n\t\t\t * noiseSynth.set(\"noise.type\", \"brown\");\n\t\t\t */\n\t this.noise = new Tone.Noise();\n\t /**\n\t\t\t * The amplitude envelope. \n\t\t\t * @type {Tone.AmplitudeEnvelope}\n\t\t\t */\n\t this.envelope = new Tone.AmplitudeEnvelope(options.envelope);\n\t //connect the noise to the output\n\t this.noise.chain(this.envelope, this.output);\n\t //start the noise\n\t this.noise.start();\n\t this._readOnly([\n\t 'noise',\n\t 'envelope'\n\t ]);\n\t };\n\t Tone.extend(Tone.NoiseSynth, Tone.Instrument);\n\t /**\n\t\t * @const\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.NoiseSynth.defaults = {\n\t 'noise': { 'type': 'white' },\n\t 'envelope': {\n\t 'attack': 0.005,\n\t 'decay': 0.1,\n\t 'sustain': 0\n\t }\n\t };\n\t /**\n\t\t * Start the attack portion of the envelopes. Unlike other \n\t\t * instruments, Tone.NoiseSynth doesn't have a note. \n\t\t * @param {Time} [time=now] the time the attack should start\n\t\t * @param {number} [velocity=1] the velocity of the note (0-1)\n\t\t * @returns {Tone.NoiseSynth} this\n\t\t * @example\n\t\t * noiseSynth.triggerAttack();\n\t\t */\n\t Tone.NoiseSynth.prototype.triggerAttack = function (time, velocity) {\n\t //the envelopes\n\t this.envelope.triggerAttack(time, velocity);\n\t return this;\n\t };\n\t /**\n\t\t * Start the release portion of the envelopes.\n\t\t * @param {Time} [time=now] the time the release should start\n\t\t * @returns {Tone.NoiseSynth} this\n\t\t */\n\t Tone.NoiseSynth.prototype.triggerRelease = function (time) {\n\t this.envelope.triggerRelease(time);\n\t return this;\n\t };\n\t /**\n\t\t * Trigger the attack and then the release. \n\t\t * @param {Time} duration the duration of the note\n\t\t * @param {Time} [time=now] the time of the attack\n\t\t * @param {number} [velocity=1] the velocity\n\t\t * @returns {Tone.NoiseSynth} this\n\t\t */\n\t Tone.NoiseSynth.prototype.triggerAttackRelease = function (duration, time, velocity) {\n\t time = this.toSeconds(time);\n\t duration = this.toSeconds(duration);\n\t this.triggerAttack(time, velocity);\n\t this.triggerRelease(time + duration);\n\t return this;\n\t };\n\t /**\n\t\t * Clean up. \n\t\t * @returns {Tone.NoiseSynth} this\n\t\t */\n\t Tone.NoiseSynth.prototype.dispose = function () {\n\t Tone.Instrument.prototype.dispose.call(this);\n\t this._writable([\n\t 'noise',\n\t 'envelope'\n\t ]);\n\t this.noise.dispose();\n\t this.noise = null;\n\t this.envelope.dispose();\n\t this.envelope = null;\n\t return this;\n\t };\n\t return Tone.NoiseSynth;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Karplus-String string synthesis. Often out of tune. \n\t\t * Will change when the AudioWorkerNode is available across\n\t\t * browsers. \n\t\t * \n\t\t * @constructor\n\t\t * @extends {Tone.Instrument}\n\t\t * @param {Object} [options] see the defaults\n\t\t * @example\n\t\t * var plucky = new Tone.PluckSynth().toMaster();\n\t\t * plucky.triggerAttack(\"C4\");\n\t\t */\n\t Tone.PluckSynth = function (options) {\n\t options = this.defaultArg(options, Tone.PluckSynth.defaults);\n\t Tone.Instrument.call(this, options);\n\t /**\n\t\t\t * @type {Tone.Noise}\n\t\t\t * @private\n\t\t\t */\n\t this._noise = new Tone.Noise('pink');\n\t /**\n\t\t\t * The amount of noise at the attack. \n\t\t\t * Nominal range of [0.1, 20]\n\t\t\t * @type {number}\n\t\t\t */\n\t this.attackNoise = options.attackNoise;\n\t /**\n\t\t\t * the LFCF\n\t\t\t * @type {Tone.LowpassCombFilter}\n\t\t\t * @private\n\t\t\t */\n\t this._lfcf = new Tone.LowpassCombFilter({\n\t 'resonance': options.resonance,\n\t 'dampening': options.dampening\n\t });\n\t /**\n\t\t\t * The resonance control. \n\t\t\t * @type {NormalRange}\n\t\t\t * @signal\n\t\t\t */\n\t this.resonance = this._lfcf.resonance;\n\t /**\n\t\t\t * The dampening control. i.e. the lowpass filter frequency of the comb filter\n\t\t\t * @type {Frequency}\n\t\t\t * @signal\n\t\t\t */\n\t this.dampening = this._lfcf.dampening;\n\t //connections\n\t this._noise.connect(this._lfcf);\n\t this._lfcf.connect(this.output);\n\t this._readOnly([\n\t 'resonance',\n\t 'dampening'\n\t ]);\n\t };\n\t Tone.extend(Tone.PluckSynth, Tone.Instrument);\n\t /**\n\t\t * @static\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.PluckSynth.defaults = {\n\t 'attackNoise': 1,\n\t 'dampening': 4000,\n\t 'resonance': 0.9\n\t };\n\t /**\n\t\t * Trigger the note. \n\t\t * @param {Frequency} note The note to trigger.\n\t\t * @param {Time} [time=now] When the note should be triggered.\n\t\t * @returns {Tone.PluckSynth} this\n\t\t */\n\t Tone.PluckSynth.prototype.triggerAttack = function (note, time) {\n\t note = this.toFrequency(note);\n\t time = this.toSeconds(time);\n\t var delayAmount = 1 / note;\n\t this._lfcf.delayTime.setValueAtTime(delayAmount, time);\n\t this._noise.start(time);\n\t this._noise.stop(time + delayAmount * this.attackNoise);\n\t return this;\n\t };\n\t /**\n\t\t * Clean up. \n\t\t * @returns {Tone.PluckSynth} this\n\t\t */\n\t Tone.PluckSynth.prototype.dispose = function () {\n\t Tone.Instrument.prototype.dispose.call(this);\n\t this._noise.dispose();\n\t this._lfcf.dispose();\n\t this._noise = null;\n\t this._lfcf = null;\n\t this._writable([\n\t 'resonance',\n\t 'dampening'\n\t ]);\n\t this.dampening = null;\n\t this.resonance = null;\n\t return this;\n\t };\n\t return Tone.PluckSynth;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.PolySynth handles voice creation and allocation for any\n\t\t * instruments passed in as the second paramter. PolySynth is \n\t\t * not a synthesizer by itself, it merely manages voices of \n\t\t * one of the other types of synths, allowing any of the \n\t\t * monophonic synthesizers to be polyphonic. \n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.Instrument}\n\t\t * @param {number|Object} [polyphony=4] The number of voices to create\n\t\t * @param {function} [voice=Tone.Synth] The constructor of the voices\n\t\t * uses Tone.Synth by default. \n\t\t * @example\n\t\t * //a polysynth composed of 6 Voices of Synth\n\t\t * var synth = new Tone.PolySynth(6, Tone.Synth).toMaster();\n\t\t * //set the attributes using the set interface\n\t\t * synth.set(\"detune\", -1200);\n\t\t * //play a chord\n\t\t * synth.triggerAttackRelease([\"C4\", \"E4\", \"A4\"], \"4n\");\n\t\t */\n\t Tone.PolySynth = function () {\n\t Tone.Instrument.call(this);\n\t var options = this.optionsObject(arguments, [\n\t 'polyphony',\n\t 'voice'\n\t ], Tone.PolySynth.defaults);\n\t options = this.defaultArg(options, Tone.Instrument.defaults);\n\t //max polyphony\n\t options.polyphony = Math.min(Tone.PolySynth.MAX_POLYPHONY, options.polyphony);\n\t /**\n\t\t\t * the array of voices\n\t\t\t * @type {Array}\n\t\t\t */\n\t this.voices = new Array(options.polyphony);\n\t /**\n\t\t\t * The queue of voices with data about last trigger\n\t\t\t * and the triggered note\n\t\t\t * @private\n\t\t\t * @type {Array}\n\t\t\t */\n\t this._triggers = new Array(options.polyphony);\n\t /**\n\t\t\t * The detune in cents\n\t\t\t * @type {Cents}\n\t\t\t * @signal\n\t\t\t */\n\t this.detune = new Tone.Signal(options.detune, Tone.Type.Cents);\n\t this._readOnly('detune');\n\t //create the voices\n\t for (var i = 0; i < options.polyphony; i++) {\n\t var v = new options.voice(arguments[2], arguments[3]);\n\t this.voices[i] = v;\n\t v.connect(this.output);\n\t if (v.hasOwnProperty('detune')) {\n\t this.detune.connect(v.detune);\n\t }\n\t this._triggers[i] = {\n\t release: -1,\n\t note: null,\n\t voice: v\n\t };\n\t }\n\t //set the volume initially\n\t this.volume.value = options.volume;\n\t };\n\t Tone.extend(Tone.PolySynth, Tone.Instrument);\n\t /**\n\t\t * the defaults\n\t\t * @const\n\t\t * @static\n\t\t * @type {Object}\n\t\t */\n\t Tone.PolySynth.defaults = {\n\t 'polyphony': 4,\n\t 'volume': 0,\n\t 'detune': 0,\n\t 'voice': Tone.Synth\n\t };\n\t /**\n\t\t * Trigger the attack portion of the note\n\t\t * @param {Frequency|Array} notes The notes to play. Accepts a single\n\t\t * Frequency or an array of frequencies.\n\t\t * @param {Time} [time=now] The start time of the note.\n\t\t * @param {number} [velocity=1] The velocity of the note.\n\t\t * @returns {Tone.PolySynth} this\n\t\t * @example\n\t\t * //trigger a chord immediately with a velocity of 0.2\n\t\t * poly.triggerAttack([\"Ab3\", \"C4\", \"F5\"], undefined, 0.2);\n\t\t */\n\t Tone.PolySynth.prototype.triggerAttack = function (notes, time, velocity) {\n\t if (!Array.isArray(notes)) {\n\t notes = [notes];\n\t }\n\t time = this.toSeconds(time);\n\t for (var i = 0; i < notes.length; i++) {\n\t var val = notes[i];\n\t //trigger the oldest voice\n\t var oldest = this._triggers[0];\n\t var oldestIndex = 0;\n\t for (var j = 1; j < this._triggers.length; j++) {\n\t if (this._triggers[j].release < oldest.release) {\n\t oldest = this._triggers[j];\n\t oldestIndex = j;\n\t }\n\t }\n\t oldest.release = Infinity;\n\t oldest.note = JSON.stringify(val);\n\t oldest.voice.triggerAttack(val, time, velocity);\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Trigger the attack and release after the specified duration\n\t\t * \n\t\t * @param {Frequency|Array} notes The notes to play. Accepts a single\n\t\t * Frequency or an array of frequencies.\n\t\t * @param {Time} duration the duration of the note\n\t\t * @param {Time} [time=now] if no time is given, defaults to now\n\t\t * @param {number} [velocity=1] the velocity of the attack (0-1)\n\t\t * @returns {Tone.PolySynth} this\n\t\t * @example\n\t\t * //trigger a chord for a duration of a half note \n\t\t * poly.triggerAttackRelease([\"Eb3\", \"G4\", \"C5\"], \"2n\");\n\t\t * @example\n\t\t * //can pass in an array of durations as well\n\t\t * poly.triggerAttackRelease([\"Eb3\", \"G4\", \"C5\"], [\"2n\", \"4n\", \"4n\"]);\n\t\t */\n\t Tone.PolySynth.prototype.triggerAttackRelease = function (notes, duration, time, velocity) {\n\t time = this.toSeconds(time);\n\t this.triggerAttack(notes, time, velocity);\n\t if (this.isArray(duration) && this.isArray(notes)) {\n\t for (var i = 0; i < notes.length; i++) {\n\t var d = duration[Math.min(i, duration.length - 1)];\n\t this.triggerRelease(notes[i], time + this.toSeconds(d));\n\t }\n\t } else {\n\t this.triggerRelease(notes, time + this.toSeconds(duration));\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Trigger the release of the note. Unlike monophonic instruments, \n\t\t * a note (or array of notes) needs to be passed in as the first argument.\n\t\t * @param {Frequency|Array} notes The notes to play. Accepts a single\n\t\t * Frequency or an array of frequencies.\n\t\t * @param {Time} [time=now] When the release will be triggered. \n\t\t * @returns {Tone.PolySynth} this\n\t\t * @example\n\t\t * poly.triggerRelease([\"Ab3\", \"C4\", \"F5\"], \"+2n\");\n\t\t */\n\t Tone.PolySynth.prototype.triggerRelease = function (notes, time) {\n\t if (!Array.isArray(notes)) {\n\t notes = [notes];\n\t }\n\t time = this.toSeconds(time);\n\t for (var i = 0; i < notes.length; i++) {\n\t //get the voice\n\t var stringified = JSON.stringify(notes[i]);\n\t for (var v = 0; v < this._triggers.length; v++) {\n\t var desc = this._triggers[v];\n\t if (desc.note === stringified && desc.release > time) {\n\t desc.voice.triggerRelease(time);\n\t desc.release = time;\n\t }\n\t }\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Set a member/attribute of the voices. \n\t\t * @param {Object|string} params\n\t\t * @param {number=} value\n\t\t * @param {Time=} rampTime\n\t\t * @returns {Tone.PolySynth} this\n\t\t * @example\n\t\t * poly.set({\n\t\t * \t\"filter\" : {\n\t\t * \t\t\"type\" : \"highpass\"\n\t\t * \t},\n\t\t * \t\"envelope\" : {\n\t\t * \t\t\"attack\" : 0.25\n\t\t * \t}\n\t\t * });\n\t\t */\n\t Tone.PolySynth.prototype.set = function (params, value, rampTime) {\n\t for (var i = 0; i < this.voices.length; i++) {\n\t this.voices[i].set(params, value, rampTime);\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Get the synth's attributes. Given no arguments get\n\t\t * will return all available object properties and their corresponding\n\t\t * values. Pass in a single attribute to retrieve or an array\n\t\t * of attributes. The attribute strings can also include a \".\"\n\t\t * to access deeper properties.\n\t\t * @param {Array=} params the parameters to get, otherwise will return \n\t\t * \t\t\t\t\t all available.\n\t\t */\n\t Tone.PolySynth.prototype.get = function (params) {\n\t return this.voices[0].get(params);\n\t };\n\t /**\n\t\t * Trigger the release portion of all the currently active voices.\n\t\t * @param {Time} [time=now] When the notes should be released.\n\t\t * @return {Tone.PolySynth} this\n\t\t */\n\t Tone.PolySynth.prototype.releaseAll = function (time) {\n\t time = this.toSeconds(time);\n\t for (var i = 0; i < this._triggers.length; i++) {\n\t var desc = this._triggers[i];\n\t if (desc.release > time) {\n\t desc.release = time;\n\t desc.voice.triggerRelease(time);\n\t }\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Clean up.\n\t\t * @returns {Tone.PolySynth} this\n\t\t */\n\t Tone.PolySynth.prototype.dispose = function () {\n\t Tone.Instrument.prototype.dispose.call(this);\n\t for (var i = 0; i < this.voices.length; i++) {\n\t this.voices[i].dispose();\n\t this.voices[i] = null;\n\t }\n\t this._writable('detune');\n\t this.detune.dispose();\n\t this.detune = null;\n\t this.voices = null;\n\t this._triggers = null;\n\t return this;\n\t };\n\t /**\n\t\t * The maximum number of notes that can be allocated \n\t\t * to a polysynth. \n\t\t * @type {Number}\n\t\t * @static\n\t\t */\n\t Tone.PolySynth.MAX_POLYPHONY = 20;\n\t return Tone.PolySynth;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.Player is an audio file player with start, loop, and stop functions.\n\t\t * \n\t\t * @constructor\n\t\t * @extends {Tone.Source} \n\t\t * @param {string|AudioBuffer} url Either the AudioBuffer or the url from\n\t\t * which to load the AudioBuffer\n\t\t * @param {function=} onload The function to invoke when the buffer is loaded. \n\t\t * Recommended to use Tone.Buffer.on('load') instead.\n\t\t * @example\n\t\t * var player = new Tone.Player(\"./path/to/sample.mp3\").toMaster();\n\t\t * //play as soon as the buffer is loaded\n\t\t * player.autostart = true;\n\t\t */\n\t Tone.Player = function (url) {\n\t var options;\n\t if (url instanceof Tone.Buffer) {\n\t url = url.get();\n\t options = Tone.Player.defaults;\n\t } else {\n\t options = this.optionsObject(arguments, [\n\t 'url',\n\t 'onload'\n\t ], Tone.Player.defaults);\n\t }\n\t Tone.Source.call(this, options);\n\t /**\n\t\t\t * @private\n\t\t\t * @type {AudioBufferSourceNode}\n\t\t\t */\n\t this._source = null;\n\t /**\n\t\t\t * If the file should play as soon\n\t\t\t * as the buffer is loaded. \n\t\t\t * @type {boolean}\n\t\t\t * @example\n\t\t\t * //will play as soon as it's loaded\n\t\t\t * var player = new Tone.Player({\n\t\t\t * \t\"url\" : \"./path/to/sample.mp3\",\n\t\t\t * \t\"autostart\" : true,\n\t\t\t * }).toMaster();\n\t\t\t */\n\t this.autostart = options.autostart;\n\t /**\n\t\t\t * the buffer\n\t\t\t * @private\n\t\t\t * @type {Tone.Buffer}\n\t\t\t */\n\t this._buffer = new Tone.Buffer({\n\t 'url': options.url,\n\t 'onload': this._onload.bind(this, options.onload),\n\t 'reverse': options.reverse\n\t });\n\t if (url instanceof AudioBuffer) {\n\t this._buffer.set(url);\n\t }\n\t /**\n\t\t\t * if the buffer should loop once it's over\n\t\t\t * @type {boolean}\n\t\t\t * @private\n\t\t\t */\n\t this._loop = options.loop;\n\t /**\n\t\t\t * if 'loop' is true, the loop will start at this position\n\t\t\t * @type {Time}\n\t\t\t * @private\n\t\t\t */\n\t this._loopStart = options.loopStart;\n\t /**\n\t\t\t * if 'loop' is true, the loop will end at this position\n\t\t\t * @type {Time}\n\t\t\t * @private\n\t\t\t */\n\t this._loopEnd = options.loopEnd;\n\t /**\n\t\t\t * the playback rate\n\t\t\t * @private\n\t\t\t * @type {number}\n\t\t\t */\n\t this._playbackRate = options.playbackRate;\n\t /**\n\t\t\t * Enabling retrigger will allow a player to be restarted\n\t\t\t * before the the previous 'start' is done playing. Otherwise, \n\t\t\t * successive calls to Tone.Player.start will only start\n\t\t\t * the sample if it had played all the way through. \n\t\t\t * @type {boolean}\n\t\t\t */\n\t this.retrigger = options.retrigger;\n\t };\n\t Tone.extend(Tone.Player, Tone.Source);\n\t /**\n\t\t * the default parameters\n\t\t * @static\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.Player.defaults = {\n\t 'onload': Tone.noOp,\n\t 'playbackRate': 1,\n\t 'loop': false,\n\t 'autostart': false,\n\t 'loopStart': 0,\n\t 'loopEnd': 0,\n\t 'retrigger': false,\n\t 'reverse': false\n\t };\n\t /**\n\t\t * Load the audio file as an audio buffer.\n\t\t * Decodes the audio asynchronously and invokes\n\t\t * the callback once the audio buffer loads. \n\t\t * Note: this does not need to be called if a url\n\t\t * was passed in to the constructor. Only use this\n\t\t * if you want to manually load a new url. \n\t\t * @param {string} url The url of the buffer to load.\n\t\t * Filetype support depends on the\n\t\t * browser.\n\t\t * @param {function=} callback The function to invoke once\n\t\t * the sample is loaded.\n\t\t * @returns {Promise}\n\t\t */\n\t Tone.Player.prototype.load = function (url, callback) {\n\t return this._buffer.load(url, this._onload.bind(this, callback));\n\t };\n\t /**\n\t\t * Internal callback when the buffer is loaded.\n\t\t * @private\n\t\t */\n\t Tone.Player.prototype._onload = function (callback) {\n\t callback = this.defaultArg(callback, Tone.noOp);\n\t callback(this);\n\t if (this.autostart) {\n\t this.start();\n\t }\n\t };\n\t /**\n\t\t * Play the buffer at the given startTime. Optionally add an offset\n\t\t * and/or duration which will play the buffer from a position\n\t\t * within the buffer for the given duration. \n\t\t * \n\t\t * @param {Time} [startTime=now] When the player should start.\n\t\t * @param {Time} [offset=0] The offset from the beginning of the sample\n\t\t * to start at. \n\t\t * @param {Time=} duration How long the sample should play. If no duration\n\t\t * is given, it will default to the full length \n\t\t * of the sample (minus any offset)\n\t\t * @returns {Tone.Player} this\n\t\t * @memberOf Tone.Player#\n\t\t * @method start\n\t\t * @name start\n\t\t */\n\t /**\n\t\t * Internal start method\n\t\t * @private\n\t\t */\n\t Tone.Player.prototype._start = function (startTime, offset, duration) {\n\t if (this._buffer.loaded) {\n\t //if it's a loop the default offset is the loopstart point\n\t if (this._loop) {\n\t offset = this.defaultArg(offset, this._loopStart);\n\t } else {\n\t //otherwise the default offset is 0\n\t offset = this.defaultArg(offset, 0);\n\t }\n\t offset = this.toSeconds(offset);\n\t //make sure it has a positive duration\n\t duration = this.defaultArg(duration, Math.max(this._buffer.duration - offset, 0));\n\t duration = this.toSeconds(duration);\n\t //the values in seconds\n\t startTime = this.toSeconds(startTime);\n\t //make the source\n\t this._source = this.context.createBufferSource();\n\t this._source.buffer = this._buffer.get();\n\t //set the looping properties\n\t if (this._loop) {\n\t this._source.loop = this._loop;\n\t this._source.loopStart = this.toSeconds(this._loopStart);\n\t this._source.loopEnd = this.toSeconds(this._loopEnd);\n\t } else if (!this._synced) {\n\t //if it's not looping, set the state change at the end of the sample\n\t this._state.setStateAtTime(Tone.State.Stopped, startTime + duration);\n\t }\n\t //and other properties\n\t this._source.playbackRate.value = this._playbackRate;\n\t this._source.connect(this.output);\n\t //start it\n\t if (this._loop) {\n\t //modify the offset if it's greater than the loop time\n\t var loopEnd = this._source.loopEnd || this._buffer.duration;\n\t var loopStart = this._source.loopStart;\n\t var loopDuration = loopEnd - loopStart;\n\t if (offset > loopEnd) {\n\t //move the offset back\n\t while (offset > loopEnd) {\n\t offset -= loopDuration;\n\t }\n\t }\n\t this._source.start(startTime, offset);\n\t } else {\n\t this._source.start(startTime, offset, duration);\n\t }\n\t } else {\n\t throw Error('Tone.Player: tried to start Player before the buffer was loaded');\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Stop playback.\n\t\t * @private\n\t\t * @param {Time} [time=now]\n\t\t * @returns {Tone.Player} this\n\t\t */\n\t Tone.Player.prototype._stop = function (time) {\n\t if (this._source) {\n\t this._source.stop(this.toSeconds(time));\n\t this._source = null;\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Seek to a specific time in the player's buffer. If the \n\t\t * source is no longer playing at that time, it will stop.\n\t\t * If you seek to a time that \n\t\t * @param {Time} offset The time to seek to.\n\t\t * @param {Time=} time The time for the seek event to occur.\n\t\t * @return {Tone.Player} this\n\t\t * @example\n\t\t * source.start(0.2);\n\t\t * source.stop(0.4);\n\t\t */\n\t Tone.Player.prototype.seek = function (offset, time) {\n\t time = this.toSeconds(time);\n\t if (this._state.getValueAtTime(time) === Tone.State.Started) {\n\t offset = this.toSeconds(offset);\n\t // if it's currently playing, stop it\n\t this._stop(time);\n\t //restart it at the given time\n\t this._start(time, offset);\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Set the loop start and end. Will only loop if loop is \n\t\t * set to true. \n\t\t * @param {Time} loopStart The loop end time\n\t\t * @param {Time} loopEnd The loop end time\n\t\t * @returns {Tone.Player} this\n\t\t * @example\n\t\t * //loop 0.1 seconds of the file. \n\t\t * player.setLoopPoints(0.2, 0.3);\n\t\t * player.loop = true;\n\t\t */\n\t Tone.Player.prototype.setLoopPoints = function (loopStart, loopEnd) {\n\t this.loopStart = loopStart;\n\t this.loopEnd = loopEnd;\n\t return this;\n\t };\n\t /**\n\t\t * If loop is true, the loop will start at this position. \n\t\t * @memberOf Tone.Player#\n\t\t * @type {Time}\n\t\t * @name loopStart\n\t\t */\n\t Object.defineProperty(Tone.Player.prototype, 'loopStart', {\n\t get: function () {\n\t return this._loopStart;\n\t },\n\t set: function (loopStart) {\n\t this._loopStart = loopStart;\n\t if (this._source) {\n\t this._source.loopStart = this.toSeconds(loopStart);\n\t }\n\t }\n\t });\n\t /**\n\t\t * If loop is true, the loop will end at this position.\n\t\t * @memberOf Tone.Player#\n\t\t * @type {Time}\n\t\t * @name loopEnd\n\t\t */\n\t Object.defineProperty(Tone.Player.prototype, 'loopEnd', {\n\t get: function () {\n\t return this._loopEnd;\n\t },\n\t set: function (loopEnd) {\n\t this._loopEnd = loopEnd;\n\t if (this._source) {\n\t this._source.loopEnd = this.toSeconds(loopEnd);\n\t }\n\t }\n\t });\n\t /**\n\t\t * The audio buffer belonging to the player. \n\t\t * @memberOf Tone.Player#\n\t\t * @type {Tone.Buffer}\n\t\t * @name buffer\n\t\t */\n\t Object.defineProperty(Tone.Player.prototype, 'buffer', {\n\t get: function () {\n\t return this._buffer;\n\t },\n\t set: function (buffer) {\n\t this._buffer.set(buffer);\n\t }\n\t });\n\t /**\n\t\t * If the buffer should loop once it's over. \n\t\t * @memberOf Tone.Player#\n\t\t * @type {boolean}\n\t\t * @name loop\n\t\t */\n\t Object.defineProperty(Tone.Player.prototype, 'loop', {\n\t get: function () {\n\t return this._loop;\n\t },\n\t set: function (loop) {\n\t this._loop = loop;\n\t if (this._source) {\n\t this._source.loop = loop;\n\t }\n\t }\n\t });\n\t /**\n\t\t * The playback speed. 1 is normal speed. This is not a signal because\n\t\t * Safari and iOS currently don't support playbackRate as a signal.\n\t\t * @memberOf Tone.Player#\n\t\t * @type {number}\n\t\t * @name playbackRate\n\t\t */\n\t Object.defineProperty(Tone.Player.prototype, 'playbackRate', {\n\t get: function () {\n\t return this._playbackRate;\n\t },\n\t set: function (rate) {\n\t this._playbackRate = rate;\n\t if (this._source) {\n\t this._source.playbackRate.value = rate;\n\t }\n\t }\n\t });\n\t /**\n\t\t * The direction the buffer should play in\n\t\t * @memberOf Tone.Player#\n\t\t * @type {boolean}\n\t\t * @name reverse\n\t\t */\n\t Object.defineProperty(Tone.Player.prototype, 'reverse', {\n\t get: function () {\n\t return this._buffer.reverse;\n\t },\n\t set: function (rev) {\n\t this._buffer.reverse = rev;\n\t }\n\t });\n\t /**\n\t\t * Dispose and disconnect.\n\t\t * @return {Tone.Player} this\n\t\t */\n\t Tone.Player.prototype.dispose = function () {\n\t Tone.Source.prototype.dispose.call(this);\n\t if (this._source !== null) {\n\t this._source.disconnect();\n\t this._source = null;\n\t }\n\t this._buffer.dispose();\n\t this._buffer = null;\n\t return this;\n\t };\n\t return Tone.Player;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Sampler wraps Tone.Player in an AmplitudeEnvelope.\n\t\t *\n\t\t * @constructor\n\t\t * @extends {Tone.Instrument}\n\t\t * @param {String} url the url of the audio file\n\t\t * @param {Function=} onload The callback to invoke when the sample is loaded.\n\t\t * @example\n\t\t * var sampler = new Sampler(\"./audio/casio/A1.mp3\", function(){\n\t\t * \t//repitch the sample down a half step\n\t\t * \tsampler.triggerAttack(-1);\n\t\t * }).toMaster();\n\t\t */\n\t Tone.Sampler = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'url',\n\t 'onload'\n\t ], Tone.Sampler.defaults);\n\t Tone.Instrument.call(this, options);\n\t /**\n\t\t\t * The sample player.\n\t\t\t * @type {Tone.Player}\n\t\t\t */\n\t this.player = new Tone.Player(options.url, options.onload);\n\t this.player.retrigger = true;\n\t /**\n\t\t\t * The amplitude envelope. \n\t\t\t * @type {Tone.AmplitudeEnvelope}\n\t\t\t */\n\t this.envelope = new Tone.AmplitudeEnvelope(options.envelope);\n\t this.player.chain(this.envelope, this.output);\n\t this._readOnly([\n\t 'player',\n\t 'envelope'\n\t ]);\n\t this.loop = options.loop;\n\t this.reverse = options.reverse;\n\t };\n\t Tone.extend(Tone.Sampler, Tone.Instrument);\n\t /**\n\t\t * the default parameters\n\t\t * @static\n\t\t */\n\t Tone.Sampler.defaults = {\n\t 'onload': Tone.noOp,\n\t 'loop': false,\n\t 'reverse': false,\n\t 'envelope': {\n\t 'attack': 0.001,\n\t 'decay': 0,\n\t 'sustain': 1,\n\t 'release': 0.1\n\t }\n\t };\n\t /**\n\t\t * Trigger the start of the sample. \n\t\t * @param {Interval} [pitch=0] The amount the sample should\n\t\t * be repitched. \n\t\t * @param {Time} [time=now] The time when the sample should start\n\t\t * @param {NormalRange} [velocity=1] The velocity of the note\n\t\t * @returns {Tone.Sampler} this\n\t\t * @example\n\t\t * sampler.triggerAttack(0, \"+0.1\", 0.5);\n\t\t */\n\t Tone.Sampler.prototype.triggerAttack = function (pitch, time, velocity) {\n\t time = this.toSeconds(time);\n\t pitch = this.defaultArg(pitch, 0);\n\t this.player.playbackRate = this.intervalToFrequencyRatio(pitch);\n\t this.player.start(time);\n\t this.envelope.triggerAttack(time, velocity);\n\t return this;\n\t };\n\t /**\n\t\t * Start the release portion of the sample. Will stop the sample once the \n\t\t * envelope has fully released. \n\t\t * \n\t\t * @param {Time} [time=now] The time when the note should release\n\t\t * @returns {Tone.Sampler} this\n\t\t * @example\n\t\t * sampler.triggerRelease();\n\t\t */\n\t Tone.Sampler.prototype.triggerRelease = function (time) {\n\t time = this.toSeconds(time);\n\t this.envelope.triggerRelease(time);\n\t this.player.stop(this.toSeconds(this.envelope.release) + time);\n\t return this;\n\t };\n\t /**\n\t\t * Trigger the attack and then the release after the duration. \n\t\t * @param {Interval} interval The interval in half-steps that the\n\t\t * sample should be pitch shifted.\n\t\t * @param {Time} duration How long the note should be held for before\n\t\t * triggering the release.\n\t\t * @param {Time} [time=now] When the note should be triggered.\n\t\t * @param {NormalRange} [velocity=1] The velocity the note should be triggered at.\n\t\t * @returns {Tone.Sampler} this\n\t\t * @example\n\t\t * //trigger the unpitched note for the duration of an 8th note\n\t\t * synth.triggerAttackRelease(0, \"8n\");\n\t\t * @memberOf Tone.Sampler#\n\t\t * @name triggerAttackRelease\n\t\t * @method triggerAttackRelease\n\t\t */\n\t /**\n\t\t * If the output sample should loop or not.\n\t\t * @memberOf Tone.Sampler#\n\t\t * @type {number|string}\n\t\t * @name loop\n\t\t */\n\t Object.defineProperty(Tone.Sampler.prototype, 'loop', {\n\t get: function () {\n\t return this.player.loop;\n\t },\n\t set: function (loop) {\n\t this.player.loop = loop;\n\t }\n\t });\n\t /**\n\t\t * The direction the buffer should play in\n\t\t * @memberOf Tone.Sampler#\n\t\t * @type {boolean}\n\t\t * @name reverse\n\t\t */\n\t Object.defineProperty(Tone.Sampler.prototype, 'reverse', {\n\t get: function () {\n\t return this.player.reverse;\n\t },\n\t set: function (rev) {\n\t this.player.reverse = rev;\n\t }\n\t });\n\t /**\n\t\t * The buffer to play.\n\t\t * @memberOf Tone.Sampler#\n\t\t * @type {Tone.Buffer}\n\t\t * @name buffer\n\t\t */\n\t Object.defineProperty(Tone.Sampler.prototype, 'buffer', {\n\t get: function () {\n\t return this.player.buffer;\n\t },\n\t set: function (buff) {\n\t this.player.buffer = buff;\n\t }\n\t });\n\t /**\n\t\t * Clean up.\n\t\t * @returns {Tone.Sampler} this\n\t\t */\n\t Tone.Sampler.prototype.dispose = function () {\n\t Tone.Instrument.prototype.dispose.call(this);\n\t this._writable([\n\t 'player',\n\t 'envelope'\n\t ]);\n\t this.player.dispose();\n\t this.player = null;\n\t this.envelope.dispose();\n\t this.envelope = null;\n\t return this;\n\t };\n\t return Tone.Sampler;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Maps a NormalRange [0, 1] to an AudioRange [-1, 1]. \n\t\t * See also Tone.AudioToGain. \n\t\t *\n\t\t * @extends {Tone.SignalBase}\n\t\t * @constructor\n\t\t * @example\n\t\t * var g2a = new Tone.GainToAudio();\n\t\t */\n\t Tone.GainToAudio = function () {\n\t /**\n\t\t\t * @type {WaveShaperNode}\n\t\t\t * @private\n\t\t\t */\n\t this._norm = this.input = this.output = new Tone.WaveShaper(function (x) {\n\t return Math.abs(x) * 2 - 1;\n\t });\n\t };\n\t Tone.extend(Tone.GainToAudio, Tone.SignalBase);\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.GainToAudio} this\n\t\t */\n\t Tone.GainToAudio.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._norm.dispose();\n\t this._norm = null;\n\t return this;\n\t };\n\t return Tone.GainToAudio;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Normalize takes an input min and max and maps it linearly to NormalRange [0,1]\n\t\t *\n\t\t * @extends {Tone.SignalBase}\n\t\t * @constructor\n\t\t * @param {number} inputMin the min input value\n\t\t * @param {number} inputMax the max input value\n\t\t * @example\n\t\t * var norm = new Tone.Normalize(2, 4);\n\t\t * var sig = new Tone.Signal(3).connect(norm);\n\t\t * //output of norm is 0.5. \n\t\t */\n\t Tone.Normalize = function (inputMin, inputMax) {\n\t /**\n\t\t\t * the min input value\n\t\t\t * @type {number}\n\t\t\t * @private\n\t\t\t */\n\t this._inputMin = this.defaultArg(inputMin, 0);\n\t /**\n\t\t\t * the max input value\n\t\t\t * @type {number}\n\t\t\t * @private\n\t\t\t */\n\t this._inputMax = this.defaultArg(inputMax, 1);\n\t /**\n\t\t\t * subtract the min from the input\n\t\t\t * @type {Tone.Add}\n\t\t\t * @private\n\t\t\t */\n\t this._sub = this.input = new Tone.Add(0);\n\t /**\n\t\t\t * divide by the difference between the input and output\n\t\t\t * @type {Tone.Multiply}\n\t\t\t * @private\n\t\t\t */\n\t this._div = this.output = new Tone.Multiply(1);\n\t this._sub.connect(this._div);\n\t this._setRange();\n\t };\n\t Tone.extend(Tone.Normalize, Tone.SignalBase);\n\t /**\n\t\t * The minimum value the input signal will reach.\n\t\t * @memberOf Tone.Normalize#\n\t\t * @type {number}\n\t\t * @name min\n\t\t */\n\t Object.defineProperty(Tone.Normalize.prototype, 'min', {\n\t get: function () {\n\t return this._inputMin;\n\t },\n\t set: function (min) {\n\t this._inputMin = min;\n\t this._setRange();\n\t }\n\t });\n\t /**\n\t\t * The maximum value the input signal will reach.\n\t\t * @memberOf Tone.Normalize#\n\t\t * @type {number}\n\t\t * @name max\n\t\t */\n\t Object.defineProperty(Tone.Normalize.prototype, 'max', {\n\t get: function () {\n\t return this._inputMax;\n\t },\n\t set: function (max) {\n\t this._inputMax = max;\n\t this._setRange();\n\t }\n\t });\n\t /**\n\t\t * set the values\n\t\t * @private\n\t\t */\n\t Tone.Normalize.prototype._setRange = function () {\n\t this._sub.value = -this._inputMin;\n\t this._div.value = 1 / (this._inputMax - this._inputMin);\n\t };\n\t /**\n\t\t * clean up\n\t\t * @returns {Tone.Normalize} this\n\t\t */\n\t Tone.Normalize.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._sub.dispose();\n\t this._sub = null;\n\t this._div.dispose();\n\t this._div = null;\n\t return this;\n\t };\n\t return Tone.Normalize;\n\t});\n\tModule(function (Tone) {\n\t /**\n\t\t * @class Tone.MultiPlayer is well suited for one-shots, multi-sampled instruments\n\t\t * or any time you need to play a bunch of audio buffers. \n\t\t * @param {Object|Array|Tone.Buffers} buffers The buffers which are available\n\t\t * to the MultiPlayer\n\t\t * @param {Function} onload The callback to invoke when all of the buffers are loaded.\n\t\t * @extends {Tone}\n\t\t * @example\n\t\t * var multiPlayer = new MultiPlayer({\n\t\t * \t\"kick\" : \"path/to/kick.mp3\",\n\t\t * \t\"snare\" : \"path/to/snare.mp3\",\n\t\t * }, function(){\n\t\t * \tmultiPlayer.start(\"kick\");\n\t\t * });\n\t\t * @example\n\t\t * //can also store the values in an array\n\t\t * var multiPlayer = new MultiPlayer([\"path/to/kick.mp3\", \"path/to/snare.mp3\"], \n\t\t * function(){\n\t\t * \t//if an array is passed in, the samples are referenced to by index\n\t\t * \tmultiPlayer.start(1);\n\t\t * });\n\t\t */\n\t Tone.MultiPlayer = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'urls',\n\t 'onload'\n\t ], Tone.MultiPlayer.defaults);\n\t if (options.urls instanceof Tone.Buffers) {\n\t /**\n\t\t\t\t * All the buffers belonging to the player.\n\t\t\t\t * @type {Tone.Buffers}\n\t\t\t\t */\n\t this.buffers = options.urls;\n\t } else {\n\t this.buffers = new Tone.Buffers(options.urls, options.onload);\n\t }\n\t /**\n\t\t\t * Keeps track of the currently playing sources.\n\t\t\t * @type {Object}\n\t\t\t * @private\n\t\t\t */\n\t this._activeSources = {};\n\t /**\n\t\t\t * The fade in envelope which is applied\n\t\t\t * to the beginning of the BufferSource\n\t\t\t * @type {Time}\n\t\t\t */\n\t this.fadeIn = options.fadeIn;\n\t /**\n\t\t\t * The fade out envelope which is applied\n\t\t\t * to the end of the BufferSource\n\t\t\t * @type {Time}\n\t\t\t */\n\t this.fadeOut = options.fadeOut;\n\t /**\n\t\t\t * The output volume node\n\t\t\t * @type {Tone.Volume}\n\t\t\t * @private\n\t\t\t */\n\t this._volume = this.output = new Tone.Volume(options.volume);\n\t /**\n\t\t\t * The volume of the output in decibels.\n\t\t\t * @type {Decibels}\n\t\t\t * @signal\n\t\t\t * @example\n\t\t\t * source.volume.value = -6;\n\t\t\t */\n\t this.volume = this._volume.volume;\n\t this._readOnly('volume');\n\t //make the output explicitly stereo\n\t this._volume.output.output.channelCount = 2;\n\t this._volume.output.output.channelCountMode = 'explicit';\n\t //mute initially\n\t this.mute = options.mute;\n\t };\n\t Tone.extend(Tone.MultiPlayer, Tone.Source);\n\t /**\n\t\t * The defaults\n\t\t * @type {Object}\n\t\t */\n\t Tone.MultiPlayer.defaults = {\n\t 'onload': Tone.noOp,\n\t 'fadeIn': 0,\n\t 'fadeOut': 0\n\t };\n\t /**\n\t\t * Make the source from the buffername\n\t\t * @param {String} bufferName\n\t\t * @return {Tone.BufferSource}\n\t\t * @private\n\t\t */\n\t Tone.MultiPlayer.prototype._makeSource = function (bufferName) {\n\t var buffer;\n\t if (this.isString(bufferName) || this.isNumber(bufferName)) {\n\t buffer = this.buffers.get(bufferName).get();\n\t } else if (bufferName instanceof Tone.Buffer) {\n\t buffer = bufferName.get();\n\t } else if (bufferName instanceof AudioBuffer) {\n\t buffer = bufferName;\n\t }\n\t var source = new Tone.BufferSource(buffer).connect(this.output);\n\t if (!this._activeSources.hasOwnProperty(bufferName)) {\n\t this._activeSources[bufferName] = [];\n\t }\n\t this._activeSources[bufferName].push(source);\n\t return source;\n\t };\n\t /**\n\t\t * Start a buffer by name. The `start` method allows a number of options\n\t\t * to be passed in such as offset, interval, and gain. This is good for multi-sampled \n\t\t * instruments and sound sprites where samples are repitched played back at different velocities.\n\t\t * @param {String} bufferName The name of the buffer to start.\n\t\t * @param {Time} time When to start the buffer.\n\t\t * @param {Time} [offset=0] The offset into the buffer to play from.\n\t\t * @param {Time=} duration How long to play the buffer for.\n\t\t * @param {Interval} [pitch=0] The interval to repitch the buffer.\n\t\t * @param {Gain} [gain=1] The gain to play the sample at.\n\t\t * @return {Tone.MultiPlayer} this\n\t\t */\n\t Tone.MultiPlayer.prototype.start = function (bufferName, time, offset, duration, pitch, gain) {\n\t time = this.toSeconds(time);\n\t var source = this._makeSource(bufferName);\n\t source.start(time, offset, duration, this.defaultArg(gain, 1), this.fadeIn);\n\t if (duration) {\n\t source.stop(time + this.toSeconds(duration), this.fadeOut);\n\t }\n\t pitch = this.defaultArg(pitch, 0);\n\t source.playbackRate.value = this.intervalToFrequencyRatio(pitch);\n\t return this;\n\t };\n\t /**\n\t\t * Start a looping buffer by name. Similar to `start`, but the buffer\n\t\t * is looped instead of played straight through. Can still be stopped with `stop`. \n\t\t * @param {String} bufferName The name of the buffer to start.\n\t\t * @param {Time} time When to start the buffer.\n\t\t * @param {Time} [offset=0] The offset into the buffer to play from.\n\t\t * @param {Time=} loopStart The start of the loop.\n\t\t * @param {Time=} loopEnd\tThe end of the loop.\n\t\t * @param {Interval} [pitch=0] The interval to repitch the buffer.\n\t\t * @param {Gain} [gain=1] The gain to play the sample at.\n\t\t * @return {Tone.MultiPlayer} this\n\t\t */\n\t Tone.MultiPlayer.prototype.startLoop = function (bufferName, time, offset, loopStart, loopEnd, pitch, gain) {\n\t time = this.toSeconds(time);\n\t var source = this._makeSource(bufferName);\n\t source.loop = true;\n\t source.loopStart = this.toSeconds(this.defaultArg(loopStart, 0));\n\t source.loopEnd = this.toSeconds(this.defaultArg(loopEnd, 0));\n\t source.start(time, offset, undefined, this.defaultArg(gain, 1), this.fadeIn);\n\t pitch = this.defaultArg(pitch, 0);\n\t source.playbackRate.value = this.intervalToFrequencyRatio(pitch);\n\t return this;\n\t };\n\t /**\n\t\t * Stop the first played instance of the buffer name.\n\t\t * @param {String} bufferName The buffer to stop.\n\t\t * @param {Time=} time When to stop the buffer\n\t\t * @return {Tone.MultiPlayer} this\n\t\t */\n\t Tone.MultiPlayer.prototype.stop = function (bufferName, time) {\n\t if (this._activeSources[bufferName] && this._activeSources[bufferName].length) {\n\t time = this.toSeconds(time);\n\t this._activeSources[bufferName].shift().stop(time, this.fadeOut);\n\t } else {\n\t throw new Error('Tone.MultiPlayer: cannot stop a buffer that hasn\\'t been started or is already stopped');\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Stop all currently playing buffers at the given time.\n\t\t * @param {Time=} time When to stop the buffers.\n\t\t * @return {Tone.MultiPlayer} this\n\t\t */\n\t Tone.MultiPlayer.prototype.stopAll = function (time) {\n\t time = this.toSeconds(time);\n\t for (var bufferName in this._activeSources) {\n\t var sources = this._activeSources[bufferName];\n\t for (var i = 0; i < sources.length; i++) {\n\t sources[i].stop(time);\n\t }\n\t }\n\t return this;\n\t };\n\t /**\n\t\t * Add another buffer to the available buffers.\n\t\t * @param {String} name The name to that the buffer is refered\n\t\t * to in start/stop methods. \n\t\t * @param {String|Tone.Buffer} url The url of the buffer to load\n\t\t * or the buffer.\n\t\t * @param {Function} callback The function to invoke after the buffer is loaded.\n\t\t */\n\t Tone.MultiPlayer.prototype.add = function (name, url, callback) {\n\t this.buffers.add(name, url, callback);\n\t return this;\n\t };\n\t /**\n\t\t * Returns the playback state of the source. \"started\"\n\t\t * if there are any buffers playing. \"stopped\" otherwise.\n\t\t * @type {Tone.State}\n\t\t * @readOnly\n\t\t * @memberOf Tone.MultiPlayer#\n\t\t * @name state\n\t\t */\n\t Object.defineProperty(Tone.MultiPlayer.prototype, 'state', {\n\t get: function () {\n\t return this._activeSources.length > 0 ? Tone.State.Started : Tone.State.Stopped;\n\t }\n\t });\n\t /**\n\t\t * Mute the output. \n\t\t * @memberOf Tone.MultiPlayer#\n\t\t * @type {boolean}\n\t\t * @name mute\n\t\t * @example\n\t\t * //mute the output\n\t\t * source.mute = true;\n\t\t */\n\t Object.defineProperty(Tone.MultiPlayer.prototype, 'mute', {\n\t get: function () {\n\t return this._volume.mute;\n\t },\n\t set: function (mute) {\n\t this._volume.mute = mute;\n\t }\n\t });\n\t /**\n\t\t * Clean up.\n\t\t * @return {Tone.MultiPlayer} this\n\t\t */\n\t Tone.MultiPlayer.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this._volume.dispose();\n\t this._volume = null;\n\t this._writable('volume');\n\t this.volume = null;\n\t for (var bufferName in this._activeSources) {\n\t this._activeSources[bufferName].forEach(function (source) {\n\t source.dispose();\n\t });\n\t }\n\t this.buffers.dispose();\n\t this.buffers = null;\n\t this._activeSources = null;\n\t return this;\n\t };\n\t return Tone.MultiPlayer;\n\t});\n\tModule(function (Tone) {\n\t /**\n\t\t * @class Tone.GrainPlayer implements [granular synthesis](https://en.wikipedia.org/wiki/Granular_synthesis).\n\t\t * Granular Synthesis enables you to adjust pitch and playback rate independently. The grainSize is the \n\t\t * amount of time each small chunk of audio is played for and the overlap is the \n\t\t * amount of crossfading transition time between successive grains.\n\t\t * @extends {Tone}\n\t\t * @param {String|Tone.Buffer} url\tThe url to load, or the Tone.Buffer to play.\n\t\t * @param {Function=} callback The callback to invoke after the url is loaded.\n\t\t */\n\t Tone.GrainPlayer = function () {\n\t var options = this.optionsObject(arguments, [\n\t 'url',\n\t 'onload'\n\t ], Tone.GrainPlayer.defaults);\n\t Tone.Source.call(this);\n\t /**\n\t\t\t * The audio buffer belonging to the player.\n\t\t\t * @type {Tone.Buffer}\n\t\t\t */\n\t this.buffer = new Tone.Buffer(options.url, options.onload);\n\t /**\n\t\t\t * Plays the buffer with a small envelope\n\t\t\t * @type {Tone.MultiPlayer}\n\t\t\t * @private\n\t\t\t */\n\t this._player = new Tone.MultiPlayer().connect(this.output);\n\t /**\n\t\t\t * Create a repeating tick to schedule\n\t\t\t * the grains.\n\t\t\t * @type {Tone.Clock}\n\t\t\t * @private\n\t\t\t */\n\t this._clock = new Tone.Clock(this._tick.bind(this), 1);\n\t /**\n\t\t\t * @type {Number}\n\t\t\t * @private\n\t\t\t */\n\t this._loopStart = 0;\n\t /**\n\t\t\t * @type {Number}\n\t\t\t * @private\n\t\t\t */\n\t this._loopEnd = 0;\n\t /**\n\t\t\t * @type {Number}\n\t\t\t * @private\n\t\t\t */\n\t this._playbackRate = options.playbackRate;\n\t /**\n\t\t\t * @type {Number}\n\t\t\t * @private\n\t\t\t */\n\t this._grainSize = options.grainSize;\n\t /**\n\t\t\t * @private\n\t\t\t * @type {Number}\n\t\t\t */\n\t this._overlap = options.overlap;\n\t /**\n\t\t\t * Adjust the pitch independently of the playbackRate.\n\t\t\t * @type {Cents}\n\t\t\t */\n\t this.detune = options.detune;\n\t /**\n\t\t\t * The amount of time randomly added\n\t\t\t * or subtracted from the grain's offset\n\t\t\t * @type {Time}\n\t\t\t */\n\t this.drift = options.drift;\n\t //setup\n\t this.overlap = options.overlap;\n\t this.loop = options.loop;\n\t this.playbackRate = options.playbackRate;\n\t this.grainSize = options.grainSize;\n\t this.loopStart = options.loopStart;\n\t this.loopEnd = options.loopEnd;\n\t this.reverse = options.reverse;\n\t };\n\t Tone.extend(Tone.GrainPlayer, Tone.Source);\n\t /**\n\t\t * the default parameters\n\t\t * @static\n\t\t * @const\n\t\t * @type {Object}\n\t\t */\n\t Tone.GrainPlayer.defaults = {\n\t 'onload': Tone.noOp,\n\t 'overlap': 0.1,\n\t 'grainSize': 0.2,\n\t 'drift': 0,\n\t 'playbackRate': 1,\n\t 'detune': 0,\n\t 'loop': false,\n\t 'loopStart': 0,\n\t 'loopEnd': 0,\n\t 'reverse': false\n\t };\n\t /**\n\t\t * Play the buffer at the given startTime. Optionally add an offset\n\t\t * and/or duration which will play the buffer from a position\n\t\t * within the buffer for the given duration. \n\t\t * \n\t\t * @param {Time} [startTime=now] When the player should start.\n\t\t * @param {Time} [offset=0] The offset from the beginning of the sample\n\t\t * to start at. \n\t\t * @param {Time=} duration How long the sample should play. If no duration\n\t\t * is given, it will default to the full length \n\t\t * of the sample (minus any offset)\n\t\t * @returns {Tone.GrainPlayer} this\n\t\t * @memberOf Tone.GrainPlayer#\n\t\t * @method start\n\t\t * @name start\n\t\t */\n\t /**\n\t\t * Internal start method\n\t\t * @param {Time} time\n\t\t * @param {Time} offset\n\t\t * @private\n\t\t */\n\t Tone.GrainPlayer.prototype._start = function (time, offset, duration) {\n\t offset = this.defaultArg(offset, 0);\n\t offset = this.toSeconds(offset);\n\t time = this.toSeconds(time);\n\t this._offset = offset;\n\t this._clock.start(time);\n\t //unmute the player\n\t this._player.volume.setValueAtTime(0, time);\n\t if (duration) {\n\t this._stop(time + this.toSeconds(duration));\n\t }\n\t };\n\t /**\n\t\t * Internal start method\n\t\t * @param {Time} time\n\t\t * @private\n\t\t */\n\t Tone.GrainPlayer.prototype._stop = function (time) {\n\t this._clock.stop(time);\n\t //mute the player\n\t this._player.volume.cancelScheduledValues(time);\n\t this._player.volume.setValueAtTime(-Infinity, time);\n\t };\n\t /**\n\t\t * Invoked on each clock tick. scheduled a new\n\t\t * grain at this time.\n\t\t * @param {Time} time \n\t\t * @private\n\t\t */\n\t Tone.GrainPlayer.prototype._tick = function (time) {\n\t var bufferDuration = this.buffer.duration;\n\t if (this.loop && this._loopEnd > 0) {\n\t bufferDuration = this._loopEnd;\n\t }\n\t var drift = (Math.random() * 2 - 1) * this.drift;\n\t var offset = this._offset - this._overlap + drift;\n\t var detune = this.detune / 100;\n\t //keep the offset within the limits of the buffer\n\t offset = Math.max(offset, 0);\n\t offset = Math.min(offset, bufferDuration);\n\t var originalFadeIn = this._player.fadeIn;\n\t if (this.loop && this._offset > bufferDuration) {\n\t //play the end\n\t var endSegmentDuration = this._offset - bufferDuration;\n\t this._player.start(this.buffer, time, offset, endSegmentDuration + this._overlap, detune);\n\t //and play the beginning \n\t offset = this._offset % bufferDuration;\n\t this._offset = this._loopStart;\n\t this._player.fadeIn = 0;\n\t this._player.start(this.buffer, time + endSegmentDuration, this._offset, offset + this._overlap, detune);\n\t } else if (this._offset > bufferDuration) {\n\t //set the state to stopped. \n\t this.stop(time);\n\t } else {\n\t if (offset === 0) {\n\t this._player.fadeIn = 0;\n\t }\n\t this._player.start(this.buffer, time, offset, this.grainSize + this._overlap, detune);\n\t }\n\t this._player.fadeIn = originalFadeIn;\n\t //increment the offset\n\t var duration = this._clock._nextTick - time;\n\t this._offset += duration * this._playbackRate;\n\t };\n\t /**\n\t\t * Jump to a specific time and play it.\n\t\t * @param {Time} offset The offset to jump to.\n\t\t * @param {Time=} time When to make the jump.\n\t\t * @return {[type]} [description]\n\t\t */\n\t Tone.GrainPlayer.prototype.scrub = function (offset, time) {\n\t this._offset = this.toSeconds(offset);\n\t this._tick(this.toSeconds(time));\n\t return this;\n\t };\n\t /**\n\t\t * The playback rate of the sample\n\t\t * @memberOf Tone.GrainPlayer#\n\t\t * @type {Positive}\n\t\t * @name playbackRate\n\t\t */\n\t Object.defineProperty(Tone.GrainPlayer.prototype, 'playbackRate', {\n\t get: function () {\n\t return this._playbackRate;\n\t },\n\t set: function (rate) {\n\t this._playbackRate = rate;\n\t this.grainSize = this._grainSize;\n\t }\n\t });\n\t /**\n\t\t * The loop start time. \n\t\t * @memberOf Tone.GrainPlayer#\n\t\t * @type {Time}\n\t\t * @name loopStart\n\t\t */\n\t Object.defineProperty(Tone.GrainPlayer.prototype, 'loopStart', {\n\t get: function () {\n\t return this._loopStart;\n\t },\n\t set: function (time) {\n\t this._loopStart = this.toSeconds(time);\n\t }\n\t });\n\t /**\n\t\t * The loop end time. \n\t\t * @memberOf Tone.GrainPlayer#\n\t\t * @type {Time}\n\t\t * @name loopEnd\n\t\t */\n\t Object.defineProperty(Tone.GrainPlayer.prototype, 'loopEnd', {\n\t get: function () {\n\t return this._loopEnd;\n\t },\n\t set: function (time) {\n\t this._loopEnd = this.toSeconds(time);\n\t }\n\t });\n\t /**\n\t\t * The direction the buffer should play in\n\t\t * @memberOf Tone.GrainPlayer#\n\t\t * @type {boolean}\n\t\t * @name reverse\n\t\t */\n\t Object.defineProperty(Tone.GrainPlayer.prototype, 'reverse', {\n\t get: function () {\n\t return this.buffer.reverse;\n\t },\n\t set: function (rev) {\n\t this.buffer.reverse = rev;\n\t }\n\t });\n\t /**\n\t\t * The size of each chunk of audio that the \n\t\t * buffer is chopped into and played back at.\n\t\t * @memberOf Tone.GrainPlayer#\n\t\t * @type {Time}\n\t\t * @name grainSize\n\t\t */\n\t Object.defineProperty(Tone.GrainPlayer.prototype, 'grainSize', {\n\t get: function () {\n\t return this._grainSize;\n\t },\n\t set: function (size) {\n\t this._grainSize = this.toSeconds(size);\n\t this._clock.frequency.value = this._playbackRate / this._grainSize;\n\t }\n\t });\n\t /**\n\t\t * This is the duration of the cross-fade between \n\t\t * sucessive grains.\n\t\t * @memberOf Tone.GrainPlayer#\n\t\t * @type {Time}\n\t\t * @name overlap\n\t\t */\n\t Object.defineProperty(Tone.GrainPlayer.prototype, 'overlap', {\n\t get: function () {\n\t return this._overlap;\n\t },\n\t set: function (time) {\n\t time = this.toSeconds(time);\n\t this._overlap = time;\n\t if (this._overlap < 0) {\n\t this._player.fadeIn = 0.01;\n\t this._player.fadeOut = 0.01;\n\t } else {\n\t this._player.fadeIn = time;\n\t this._player.fadeOut = time;\n\t }\n\t }\n\t });\n\t /**\n\t\t * Clean up\n\t\t * @return {Tone.GrainPlayer} this\n\t\t */\n\t Tone.GrainPlayer.prototype.dispose = function () {\n\t Tone.Source.prototype.dispose.call(this);\n\t this.buffer.dispose();\n\t this.buffer = null;\n\t this._player.dispose();\n\t this._player = null;\n\t this._clock.dispose();\n\t this._clock = null;\n\t return this;\n\t };\n\t return Tone.GrainPlayer;\n\t});\n\tModule(function (Tone) {\n\t \n\t /**\n\t\t * @class Tone.UserMedia uses MediaDevices.getUserMedia to open up\n\t\t * and external microphone or audio input. Check \n\t\t * [MediaDevices API Support](https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getUserMedia)\n\t\t * to see which browsers are supported. Access to an external input\n\t\t * is limited to secure (HTTPS) connections.\n\t\t * \n\t\t * @constructor\n\t\t * @extends {Tone}\n\t\t * @param {Decibels=} volume The level of the input\n\t\t * @example\n\t\t * //list the inputs and open the third one\n\t\t * var motu = new Tone.UserMedia();\n\t\t * \n\t\t * //opening the input asks the user to activate their mic\n\t\t * motu.open().then(function(){\n\t\t * \t//opening is activates the microphone\n\t\t * \t//starting lets audio through\n\t\t * \tmotu.start(10);\n\t\t * });\n\t\t */\n\t Tone.UserMedia = function () {\n\t var options = this.optionsObject(arguments, ['volume'], Tone.UserMedia.defaults);\n\t /**\n\t\t\t * The MediaStreamNode \n\t\t\t * @type {MediaStreamAudioSourceNode}\n\t\t\t * @private\n\t\t\t */\n\t this._mediaStream = null;\n\t /**\n\t\t\t * The media stream created by getUserMedia.\n\t\t\t * @type {LocalMediaStream}\n\t\t\t * @private\n\t\t\t */\n\t this._stream = null;\n\t /**\n\t\t\t * The open device\n\t\t\t * @type {MediaDeviceInfo}\n\t\t\t * @private\n\t\t\t */\n\t this._device = null;\n\t /**\n\t\t\t * The output volume node\n\t\t\t * @type {Tone.Volume}\n\t\t\t * @private\n\t\t\t */\n\t this._volume = this.output = new Tone.Volume(options.volume);\n\t /**\n\t\t\t * The volume of the output in decibels.\n\t\t\t * @type {Decibels}\n\t\t\t * @signal\n\t\t\t * @example\n\t\t\t * input.volume.value = -6;\n\t\t\t */\n\t this.volume = this._volume.volume;\n\t this._readOnly('volume');\n\t this.mute = options.mute;\n\t };\n\t Tone.extend(Tone.UserMedia);\n\t /**\n\t\t * the default parameters\n\t\t * @type {Object}\n\t\t */\n\t Tone.UserMedia.defaults = {\n\t 'volume': 0,\n\t 'mute': false\n\t };\n\t /**\n\t\t * Open the media stream. If a string is passed in, it is assumed\n\t\t * to be the label or id of the stream, if a number is passed in,\n\t\t * it is the input number of the stream.\n\t\t * @param {String|Number} [labelOrId=\"default\"] The label or id of the audio input media device. \n\t\t * With no argument, the default stream is opened.\n\t\t * @return {Promise} The promise is resolved when the stream is open.\n\t\t */\n\t Tone.UserMedia.prototype.open = function (labelOrId) {\n\t labelOrId = this.defaultArg(labelOrId, 'default');\n\t return this.enumerateDevices().then(function (devices) {\n\t var device;\n\t if (this.isNumber(labelOrId)) {\n\t device = devices[labelOrId];\n\t } else {\n\t device = devices.find(function (device) {\n\t return device.label === labelOrId || device.deviceId === labelOrId;\n\t });\n\t if (!device) {\n\t //otherwise just take the first one\n\t device = devices[0];\n\t }\n\t }\n\t //didn't find a matching device\n\t if (!device) {\n\t throw new Error('Tone.UserMedia: no matching audio inputs.');\n\t }\n\t this._device = device;\n\t //do getUserMedia\n\t var constraints = {\n\t audio: {\n\t 'deviceId': device.deviceId,\n\t 'echoCancellation': false,\n\t 'sampleRate': this.context.sampleRate\n\t }\n\t };\n\t return navigator.mediaDevices.getUserMedia(constraints).then(function (stream) {\n\t //start a new source only if the previous one is closed\n\t if (!this._stream) {\n\t this._stream = stream;\n\t //Wrap a MediaStreamSourceNode around the live input stream.\n\t this._mediaStream = this.context.createMediaStreamSource(stream);\n\t //Connect the MediaStreamSourceNode to a gate gain node\n\t this._mediaStream.connect(this.output);\n\t }\n\t return this;\n\t }.bind(this));\n\t }.bind(this));\n\t };\n\t /**\n\t\t * Close the media stream\n\t\t * @return {Tone.UserMedia} this\n\t\t */\n\t Tone.UserMedia.prototype.close = function () {\n\t if (this._stream) {\n\t this._stream.getAudioTracks().forEach(function (track) {\n\t track.stop();\n\t });\n\t this._stream = null;\n\t //remove the old media stream\n\t this._mediaStream.disconnect();\n\t this._mediaStream = null;\n\t }\n\t this._device = null;\n\t return this;\n\t };\n\t /**\n\t\t * Returns a promise which resolves with the list of audio input devices available.\n\t\t * @return {Promise} The promise that is resolved with the devices\n\t\t * @example\n\t\t * extInput.enumerateDevices().then(function(devices){\n\t\t * \tconsole.log(devices)\n\t\t * })\n\t\t */\n\t Tone.UserMedia.prototype.enumerateDevices = function () {\n\t return navigator.mediaDevices.enumerateDevices().then(function (devices) {\n\t return devices.filter(function (device) {\n\t return device.kind === 'audioinput';\n\t });\n\t });\n\t };\n\t /**\n\t\t * Returns the playback state of the source, \"started\" when the microphone is open\n\t\t * and \"stopped\" when the mic is closed.\n\t\t * @type {Tone.State}\n\t\t * @readOnly\n\t\t * @memberOf Tone.UserMedia#\n\t\t * @name state\n\t\t */\n\t Object.defineProperty(Tone.UserMedia.prototype, 'state', {\n\t get: function () {\n\t return this._stream && this._stream.active ? Tone.State.Started : Tone.State.Stopped;\n\t }\n\t });\n\t /**\n\t\t * \tReturns an identifier for the represented device that is \n\t\t * \tpersisted across sessions. It is un-guessable by other applications and \n\t\t * \tunique to the origin of the calling application. It is reset when the \n\t\t * \tuser clears cookies (for Private Browsing, a different identifier is \n\t\t * \tused that is not persisted across sessions). Returns undefined when the \n\t\t * \tdevice is not open.\n\t\t * @type {String}\n\t\t * @readOnly\n\t\t * @memberOf Tone.UserMedia#\n\t\t * @name deviceId\n\t\t */\n\t Object.defineProperty(Tone.UserMedia.prototype, 'deviceId', {\n\t get: function () {\n\t if (this._device) {\n\t return this._device.deviceId;\n\t }\n\t }\n\t });\n\t /**\n\t\t * \tReturns a group identifier. Two devices have the \n\t\t * \tsame group identifier if they belong to the same physical device.\n\t\t * \tReturns undefined when the device is not open.\n\t\t * @type {String}\n\t\t * @readOnly\n\t\t * @memberOf Tone.UserMedia#\n\t\t * @name groupId\n\t\t */\n\t Object.defineProperty(Tone.UserMedia.prototype, 'groupId', {\n\t get: function () {\n\t if (this._device) {\n\t return this._device.groupId;\n\t }\n\t }\n\t });\n\t /**\n\t\t * \tReturns a label describing this device (for example \"Built-in Microphone\"). \n\t\t * \tReturns undefined when the device is not open or label is not available\n\t\t * \tbecause of permissions.\n\t\t * @type {String}\n\t\t * @readOnly\n\t\t * @memberOf Tone.UserMedia#\n\t\t * @name groupId\n\t\t */\n\t Object.defineProperty(Tone.UserMedia.prototype, 'label', {\n\t get: function () {\n\t if (this._device) {\n\t return this._device.label;\n\t }\n\t }\n\t });\n\t /**\n\t\t * Mute the output. \n\t\t * @memberOf Tone.UserMedia#\n\t\t * @type {boolean}\n\t\t * @name mute\n\t\t * @example\n\t\t * //mute the output\n\t\t * userMedia.mute = true;\n\t\t */\n\t Object.defineProperty(Tone.UserMedia.prototype, 'mute', {\n\t get: function () {\n\t return this._volume.mute;\n\t },\n\t set: function (mute) {\n\t this._volume.mute = mute;\n\t }\n\t });\n\t /**\n\t\t * Clean up.\n\t\t * @return {Tone.UserMedia} this\n\t\t */\n\t Tone.UserMedia.prototype.dispose = function () {\n\t Tone.prototype.dispose.call(this);\n\t this.close();\n\t this._writable('volume');\n\t this._volume.dispose();\n\t this._volume = null;\n\t this.volume = null;\n\t return this;\n\t };\n\t /**\n\t\t * If getUserMedia is supported by the browser.\n\t\t * @type {Boolean}\n\t\t * @memberOf Tone.UserMedia#\n\t\t * @name supported\n\t\t * @static\n\t\t * @readOnly\n\t\t */\n\t Object.defineProperty(Tone.UserMedia, 'supported', {\n\t get: function () {\n\t return !Tone.prototype.isUndef(navigator.mediaDevices) && Tone.prototype.isFunction(navigator.mediaDevices.getUserMedia);\n\t }\n\t });\n\t return Tone.UserMedia;\n\t});\n\t\n\treturn Tone;\n}));\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/tone/build/Tone.js\n// module id = 0\n// module chunks = 0","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.requestAudioContext = exports.browser = exports.mod = exports.choice = undefined;\n\nvar _tone = require(\"tone\");\n\nvar _tone2 = _interopRequireDefault(_tone);\n\nvar _startAudioContext = require(\"./startAudioContext\");\n\nvar _startAudioContext2 = _interopRequireDefault(_startAudioContext);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nvar isIphone = navigator.userAgent.match(/iPhone/i) || navigator.userAgent.match(/iPod/i);\nvar isIpad = navigator.userAgent.match(/iPad/i);\nvar isAndroid = navigator.userAgent.match(/Android/i);\nvar isMobile = isIphone || isIpad || isAndroid;\nvar isDesktop = !isMobile;\n\ndocument.body.classList.add(isMobile ? \"mobile\" : \"desktop\");\n\nvar browser = { isIphone: isIphone, isIpad: isIpad, isMobile: isMobile, isDesktop: isDesktop };\n\nfunction choice(a) {\n return a[Math.floor(Math.random() * a.length)];\n}\nfunction mod(n, m) {\n return n - m * Math.floor(n / m);\n}\n\nfunction requestAudioContext(fn) {\n if (window.location.protocol !== \"https:\") {\n var container = document.createElement(\"div\");\n var button = document.createElement(\"div\");\n button.innerHTML = \"Tap to start - please unmute your phone\";\n Object.assign(container.style, {\n display: \"block\",\n position: \"absolute\",\n width: \"100%\",\n height: \"100%\",\n zIndex: \"10000\",\n top: \"0px\",\n left: \"0px\",\n backgroundColor: \"rgba(0, 0, 0, 0.8)\"\n });\n Object.assign(button.style, {\n display: \"block\",\n position: \"absolute\",\n left: \"50%\",\n top: \"50%\",\n padding: \"20px\",\n backgroundColor: \"#7F33ED\",\n color: \"white\",\n fontFamily: \"monospace\",\n borderRadius: \"3px\",\n transform: \"translate3D(-50%,-50%,0)\",\n textAlign: \"center\",\n lineHeight: \"1.5\",\n width: \"150px\"\n });\n container.appendChild(button);\n document.body.appendChild(container);\n _startAudioContext2.default.setContext(_tone2.default.context);\n _startAudioContext2.default.on(button);\n _startAudioContext2.default.onStarted(function (_) {\n container.remove();\n fn();\n });\n } else {\n fn();\n }\n}\n\nexports.choice = choice;\nexports.mod = mod;\nexports.browser = browser;\nexports.requestAudioContext = requestAudioContext;\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./client/lib/util.js\n// module id = 1\n// module chunks = 0","'use strict';\n\n/**\n* FUNCTION: isArray( value )\n*\tValidates if a value is an array.\n*\n* @param {*} value - value to be validated\n* @returns {Boolean} boolean indicating whether value is an array\n*/\nfunction isArray( value ) {\n\treturn Object.prototype.toString.call( value ) === '[object Array]';\n} // end FUNCTION isArray()\n\n// EXPORTS //\n\nmodule.exports = Array.isArray || isArray;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/validate.io-array/lib/index.js\n// module id = 2\n// module chunks = 0","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar palettes = [[[0.5, 0.5, 0.5], [0.5, 0.5, 0.5], [1.0, 1.0, 1.0], [0.0, 0.33, 0.67]], [[0.5, 0.5, 0.5], [0.5, 0.5, 0.5], [1.0, 1.0, 1.0], [0.0, 0.1, 0.2]], [[0.5, 0.5, 0.5], [0.5, 0.5, 0.5], [1.0, 1.0, 1.0], [0.3, 0.2, 0.2]], [[0.5, 0.5, 0.5], [0.5, 0.5, 0.5], [1.0, 1.0, 0.5], [0.8, 0.9, 0.3]], [[0.5, 0.5, 0.5], [0.5, 0.5, 0.5], [1.0, 0.7, 0.4], [0.0, 0.15, 0.2]], [[0.5, 0.5, 0.5], [0.5, 0.5, 0.5], [2.0, 1.0, 0.0], [0.5, 0.2, 0.25]], [[0.8, 0.5, 0.4], [0.2, 0.4, 0.2], [2.0, 1.0, 1.0], [0.0, 0.25, 0.25]]];\n\nvar palette = palettes[0];\n\nfunction channel(t, a, b, c, d, add, mul) {\n return a + b * Math.cos(2 * Math.PI * (c * t + d)) * mul + add;\n}\n\nfunction color(t, add, mul) {\n var a = void 0,\n b = void 0,\n c = void 0,\n d = void 0;\n var rgb = [];\n for (var i = 0; i < 3; i++) {\n a = palette[0][i];\n b = palette[1][i];\n c = palette[2][i];\n d = palette[3][i];\n rgb[i] = Math.round(channel(t, a, b, c, d, add, mul) * 255);\n }\n return \"rgb(\" + rgb + \")\";\n}\n\nexports.default = color;\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./client/lib/color.js\n// module id = 3\n// module chunks = 0","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\n\nvar _tone = require(\"tone\");\n\nvar _tone2 = _interopRequireDefault(_tone);\n\nvar _util = require(\"./util\");\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nvar player_count = 4;\n\nvar samples = [{ root: 219.5, fn: \"samples/380737__cabled-mess__sansula-01-a-raw.wav\" }, { root: 260.9, fn: \"samples/380736__cabled-mess__sansula-02-c-raw.wav\" }, { root: 330.2, fn: \"samples/380735__cabled-mess__sansula-03-e-raw.wav\" }];\n\nfunction load(output) {\n samples.forEach(function (sample) {\n sample.players = [];\n sample.index = -1;\n for (var i = 0; i < player_count; i++) {\n var fn = sample.fn;\n if (window.location.href.match(/asdf.us/)) {\n fn = \"//asdf.us/kalimba/\" + fn.replace(\"wav\", \"mp3\");\n }\n var player = new _tone2.default.Player({\n url: fn,\n retrigger: true,\n playbackRate: 1\n });\n player.name = fn;\n var gain = new _tone2.default.Gain(1.6);\n player.connect(gain);\n gain.connect(output);\n sample.players.push(player);\n }\n });\n console.log(\"+ Voices:\", samples.reduce(function (count, sample) {\n return count + sample.players.length;\n }, 0));\n}\n\nvar last = 440;\n\nfunction play(freq) {\n last = freq;\n var best = (0, _util.choice)(samples);\n best.index = (best.index + 1) % player_count;\n\n var player = best.players[best.index];\n player.playbackRate = freq / best.root;\n // console.log(player.name);\n\n player.start();\n}\n\nfunction pause() {\n // no-op\n}\n\nexports.default = { load: load, play: play, pause: pause };\n\n// for help tuning\n\nfunction keydown(e) {\n // console.log(e.keyCode)\n if (e.metaKey && last) {\n var step = e.shiftKey ? e.ctrlKey ? 0.01 : 0.1 : 1;\n switch (e.keyCode) {\n case 38:\n // up\n e.preventDefault();\n samples[0].root -= step;\n play(last);\n break;\n case 40:\n // down\n e.preventDefault();\n samples[0].root += step;\n play(last);\n break;\n }\n console.log(samples[0].root);\n }\n}\n// window.addEventListener(\"keydown\", keydown, true);\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./client/lib/kalimba.js\n// module id = 4\n// module chunks = 0","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar keys = {};\nvar key_numbers = {};\nvar letters = \"zxcvbnmasdfghjklqwertyuiop\";\nvar numbers = \"1234567890\";\n\nvar callback = function callback() {};\n\nletters.toUpperCase().split(\"\").map(function (k, i) {\n keys[k.charCodeAt(0)] = i;\n});\n\nnumbers.split(\"\").map(function (k, i) {\n keys[k.charCodeAt(0)] = i + letters.length;\n key_numbers[k.charCodeAt(0)] = true;\n});\n\nwindow.addEventListener(\"keydown\", keydown, true);\nfunction keydown(e) {\n if (e.altKey || e.ctrlKey || e.metaKey) {\n e.stopPropagation();\n return;\n }\n if (document.activeElement instanceof HTMLInputElement && e.keyCode in key_numbers) {\n e.stopPropagation();\n return;\n }\n if (!(e.keyCode in keys)) return;\n var index = keys[e.keyCode];\n if (e.shiftKey) index += letters.length;\n index -= 7;\n callback(index);\n}\n\nfunction listen(fn) {\n callback = fn;\n}\n\nexports.default = { listen: listen };\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./client/lib/keys.js\n// module id = 5\n// module chunks = 0","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\n\nvar _tone = require(\"tone\");\n\nvar _tone2 = _interopRequireDefault(_tone);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nvar oscillators = {};\n\nvar output = void 0;\nvar lastPlayed = void 0;\n\nfunction load(out) {\n output = out;\n}\nfunction play(freq) {\n if (!output) {\n return;\n }\n var rounded = Math.floor(freq);\n var osc = oscillators[rounded] = oscillators[rounded] || {};\n if (!osc.el) {\n osc.el = new _tone2.default.Oscillator(freq, \"sine\");\n osc.el.connect(output);\n }\n osc.el.start();\n osc.playing = true;\n lastPlayed = osc;\n return osc;\n}\n\nfunction pause(freq) {\n var rounded = Math.floor(freq);\n if (!oscillators[rounded]) return;\n var osc = oscillators[rounded] = oscillators[rounded] || {};\n if (osc.el) osc.el.stop();\n osc.playing = false;\n return osc;\n}\n\nexports.default = { load: load, play: play, pause: pause, oscillators: oscillators };\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./client/lib/organ.js\n// module id = 6\n// module chunks = 0","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.getOutput = getOutput;\n\nvar _tone = require(\"tone\");\n\nvar _tone2 = _interopRequireDefault(_tone);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nvar output = null;\n\nfunction getOutput() {\n if (!output) output = makeOutput();\n return output;\n}\n\nfunction makeOutput() {\n var compressor = new _tone2.default.Compressor(-30, 3);\n var gain = new _tone2.default.Gain(0.3);\n compressor.connect(gain);\n gain.toMaster();\n\n return compressor;\n}\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./client/lib/output.js\n// module id = 7\n// module chunks = 0","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar PRIMES = exports.PRIMES = [1, 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317, 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503, 509, 521, 523, 541, 547, 557, 563, 569, 571, 577, 587, 593, 599, 601, 607, 613, 617, 619, 631, 641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 701, 709, 719, 727, 733, 739, 743, 751, 757, 761, 769, 773, 787, 797, 809, 811, 821, 823, 827, 829, 839, 853, 857, 859, 863, 877, 881, 883, 887, 907, 911, 919, 929, 937, 941, 947, 953, 967, 971, 977, 983, 991, 997];\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./client/lib/primes.js\n// module id = 8\n// module chunks = 0","'use strict';\n\n// MODULES //\n\nvar isArray = require( 'validate.io-array' ),\n\tisIntegerArray = require( 'validate.io-integer-array' ),\n\tisFunction = require( 'validate.io-function' );\n\n\n// VARIABLES //\n\nvar MAXINT = Math.pow( 2, 31 ) - 1;\n\n\n// FUNCTIONS //\n\n/**\n* FUNCTION: gcd( a, b )\n*\tComputes the greatest common divisor of two integers `a` and `b`, using the binary GCD algorithm.\n*\n* @param {Number} a - integer\n* @param {Number} b - integer\n* @returns {Number} greatest common divisor\n*/\nfunction gcd( a, b ) {\n\tvar k = 1,\n\t\tt;\n\t// Simple cases:\n\tif ( a === 0 ) {\n\t\treturn b;\n\t}\n\tif ( b === 0 ) {\n\t\treturn a;\n\t}\n\t// Reduce `a` and/or `b` to odd numbers and keep track of the greatest power of 2 dividing both `a` and `b`...\n\twhile ( a%2 === 0 && b%2 === 0 ) {\n\t\ta = a / 2; // right shift\n\t\tb = b / 2; // right shift\n\t\tk = k * 2; // left shift\n\t}\n\t// Reduce `a` to an odd number...\n\twhile ( a%2 === 0 ) {\n\t\ta = a / 2; // right shift\n\t}\n\t// Henceforth, `a` is always odd...\n\twhile ( b ) {\n\t\t// Remove all factors of 2 in `b`, as they are not common...\n\t\twhile ( b%2 === 0 ) {\n\t\t\tb = b / 2; // right shift\n\t\t}\n\t\t// `a` and `b` are both odd. Swap values such that `b` is the larger of the two values, and then set `b` to the difference (which is even)...\n\t\tif ( a > b ) {\n\t\t\tt = b;\n\t\t\tb = a;\n\t\t\ta = t;\n\t\t}\n\t\tb = b - a; // b=0 iff b=a\n\t}\n\t// Restore common factors of 2...\n\treturn k * a;\n} // end FUNCTION gcd()\n\n/**\n* FUNCTION: bitwise( a, b )\n*\tComputes the greatest common divisor of two integers `a` and `b`, using the binary GCD algorithm and bitwise operations.\n*\n* @param {Number} a - safe integer\n* @param {Number} b - safe integer\n* @returns {Number} greatest common divisor\n*/\nfunction bitwise( a, b ) {\n\tvar k = 0,\n\t\tt;\n\t// Simple cases:\n\tif ( a === 0 ) {\n\t\treturn b;\n\t}\n\tif ( b === 0 ) {\n\t\treturn a;\n\t}\n\t// Reduce `a` and/or `b` to odd numbers and keep track of the greatest power of 2 dividing both `a` and `b`...\n\twhile ( (a & 1) === 0 && (b & 1) === 0 ) {\n\t\ta >>>= 1; // right shift\n\t\tb >>>= 1; // right shift\n\t\tk++;\n\t}\n\t// Reduce `a` to an odd number...\n\twhile ( (a & 1) === 0 ) {\n\t\ta >>>= 1; // right shift\n\t}\n\t// Henceforth, `a` is always odd...\n\twhile ( b ) {\n\t\t// Remove all factors of 2 in `b`, as they are not common...\n\t\twhile ( (b & 1) === 0 ) {\n\t\t\tb >>>= 1; // right shift\n\t\t}\n\t\t// `a` and `b` are both odd. Swap values such that `b` is the larger of the two values, and then set `b` to the difference (which is even)...\n\t\tif ( a > b ) {\n\t\t\tt = b;\n\t\t\tb = a;\n\t\t\ta = t;\n\t\t}\n\t\tb = b - a; // b=0 iff b=a\n\t}\n\t// Restore common factors of 2...\n\treturn a << k;\n} // end FUNCTION bitwise()\n\n\n// GREATEST COMMON DIVISOR //\n\n/**\n* FUNCTION: compute( arr[, clbk] )\n*\tComputes the greatest common divisor.\n*\n* @param {Number[]|Number} arr - input array of integers\n* @param {Function|Number} [clbk] - accessor function for accessing array values\n* @returns {Number|Null} greatest common divisor or null\n*/\nfunction compute() {\n\tvar nargs = arguments.length,\n\t\targs,\n\t\tclbk,\n\t\tarr,\n\t\tlen,\n\t\ta, b,\n\t\ti;\n\n\t// Copy the input arguments to an array...\n\targs = new Array( nargs );\n\tfor ( i = 0; i < nargs; i++ ) {\n\t\targs[ i ] = arguments[ i ];\n\t}\n\t// Have we been provided with integer arguments?\n\tif ( isIntegerArray( args ) ) {\n\t\tif ( nargs === 2 ) {\n\t\t\ta = args[ 0 ];\n\t\t\tb = args[ 1 ];\n\t\t\tif ( a < 0 ) {\n\t\t\t\ta = -a;\n\t\t\t}\n\t\t\tif ( b < 0 ) {\n\t\t\t\tb = -b;\n\t\t\t}\n\t\t\tif ( a <= MAXINT && b <= MAXINT ) {\n\t\t\t\treturn bitwise( a, b );\n\t\t\t} else {\n\t\t\t\treturn gcd( a, b );\n\t\t\t}\n\t\t}\n\t\tarr = args;\n\t}\n\t// If not integers, ensure the first argument is an array...\n\telse if ( !isArray( args[ 0 ] ) ) {\n\t\tthrow new TypeError( 'gcd()::invalid input argument. Must provide an array of integers. Value: `' + args[ 0 ] + '`.' );\n\t}\n\t// Have we been provided with more than one argument? If so, ensure that the accessor argument is a function...\n\telse if ( nargs > 1 ) {\n\t\tarr = args[ 0 ];\n\t\tclbk = args[ 1 ];\n\t\tif ( !isFunction( clbk ) ) {\n\t\t\tthrow new TypeError( 'gcd()::invalid input argument. Accessor must be a function. Value: `' + clbk + '`.' );\n\t\t}\n\t}\n\t// We have been provided an array...\n\telse {\n\t\tarr = args[ 0 ];\n\t}\n\tlen = arr.length;\n\n\t// Check if a sufficient number of values have been provided...\n\tif ( len < 2 ) {\n\t\treturn null;\n\t}\n\t// If an accessor is provided, extract the array values...\n\tif ( clbk ) {\n\t\ta = new Array( len );\n\t\tfor ( i = 0; i < len; i++ ) {\n\t\t\ta[ i ] = clbk( arr[ i ], i );\n\t\t}\n\t\tarr = a;\n\t}\n\t// Given an input array, ensure all array values are integers...\n\tif ( nargs < 3 ) {\n\t\tif ( !isIntegerArray( arr ) ) {\n\t\t\tthrow new TypeError( 'gcd()::invalid input argument. Accessed array values must be integers. Value: `' + arr + '`.' );\n\t\t}\n\t}\n\t// Convert any negative integers to positive integers...\n\tfor ( i = 0; i < len; i++ ) {\n\t\ta = arr[ i ];\n\t\tif ( a < 0 ) {\n\t\t\tarr[ i ] = -a;\n\t\t}\n\t}\n\t// Exploit the fact that the gcd is an associative function...\n\ta = arr[ 0 ];\n\tfor ( i = 1; i < len; i++ ) {\n\t\tb = arr[ i ];\n\t\tif ( b <= MAXINT && a <= MAXINT ) {\n\t\t\ta = bitwise( a, b );\n\t\t} else {\n\t\t\ta = gcd( a, b );\n\t\t}\n\t}\n\treturn a;\n} // end FUNCTION compute()\n\n\n// EXPORTS //\n\nmodule.exports = compute;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/compute-gcd/lib/index.js\n// module id = 9\n// module chunks = 0","\"use strict\";\n\nvar _computeGcd = require(\"compute-gcd\");\n\nvar _computeGcd2 = _interopRequireDefault(_computeGcd);\n\nvar _keys = require(\"./lib/keys\");\n\nvar _keys2 = _interopRequireDefault(_keys);\n\nvar _color = require(\"./lib/color\");\n\nvar _color2 = _interopRequireDefault(_color);\n\nvar _kalimba = require(\"./lib/kalimba\");\n\nvar _kalimba2 = _interopRequireDefault(_kalimba);\n\nvar _organ = require(\"./lib/organ\");\n\nvar _organ2 = _interopRequireDefault(_organ);\n\nvar _output = require(\"./lib/output\");\n\nvar _util = require(\"./lib/util\");\n\nvar _primes = require(\"./lib/primes\");\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n// import life from \"./lib/life\";\n\nvar instrument = _kalimba2.default;\n\nvar root = 440;\nvar s = 50;\nvar w = void 0,\n h = void 0,\n ws = void 0,\n hs = void 0;\n\nvar add_on = 0;\nvar mul_on = 1.0;\nvar add_off = 0.1;\nvar mul_off = 0.9;\n\nvar dragging = false;\nvar erasing = false;\nvar lastFreq = 0;\nvar notes = [];\nvar base_x = 0;\nvar base_y = 0;\nvar is_split = false;\n\n(0, _util.requestAudioContext)(function () {\n var output = (0, _output.getOutput)();\n _kalimba2.default.load(output);\n _organ2.default.load(output);\n build();\n bind();\n});\n\nfunction build() {\n w = window.innerWidth;\n h = window.innerHeight;\n ws = Math.ceil(w / s);\n hs = Math.ceil(h / s);\n for (var i = 0; i < ws; i++) {\n notes[i] = [];\n for (var j = 0; j < hs; j++) {\n notes[i][j] = add(i, j);\n }\n }\n}\nfunction rebuild() {\n notes.forEach(function (row) {\n return row.forEach(function (note) {\n return note.destroy();\n });\n });\n build();\n}\nfunction play(freq) {\n if (!freq.playing) {\n freq.playing = true;\n var frequency = freq.frequency;\n // while (frequency < root) {\n // frequency *= 2;\n // }\n // while (frequency > root) {\n // frequency /= 2;\n // }\n _organ2.default.play(frequency);\n freq.div.classList.add(\"playing\");\n }\n}\nfunction trigger(freq) {\n _kalimba2.default.play(freq.frequency);\n}\nfunction pause(freq) {\n if (freq.playing) {\n freq.playing = false;\n _organ2.default.pause(freq.frequency);\n freq.div.classList.remove(\"playing\");\n }\n}\nfunction toggle(freq) {\n if (freq.playing) {\n pause(freq);\n } else {\n play(freq);\n }\n}\n\nfunction add(i, j) {\n var a = i + 1 + base_x;\n var b = j + 1 + base_y;\n // const a = i + 1;\n // const b = i + j + 2;\n // const a = PRIMES[i];\n // const b = PRIMES[i + j + 1];\n var div = document.createElement(\"div\");\n var frequency = root * a / b;\n // const frequency = root * Math.pow(2, ((b / a) % 1) + 1);\n var add = 0;\n var frac = void 0;\n div.style.left = i * s + \"px\";\n div.style.top = j * s + \"px\";\n\n var freq = {\n frequency: frequency,\n div: div,\n i: i,\n j: j,\n playing: false,\n destroy: function destroy() {\n div.parentNode.removeChild(div);\n },\n recolor: function recolor(numerator, denominator) {\n var aa = a / numerator;\n var bb = b / denominator;\n if (aa < bb) {\n add = -Math.log(bb / aa) / 3.5;\n } else {\n add = Math.log(aa / bb) / 6;\n }\n var a_inv = a * denominator;\n var b_inv = b * numerator;\n var ba_gcd = (0, _computeGcd2.default)(a_inv, b_inv);\n var a_disp = a_inv / ba_gcd;\n var b_disp = b_inv / ba_gcd;\n\n frac = Math.log2(aa / bb) % 1;\n var frac_orig = Math.log2(a / b) % 1;\n if (frac < 0) {\n frac += 1;\n }\n if (frac_orig < 0) {\n frac += 1;\n }\n if (frac_orig === 0) {\n div.style.fontWeight = \"900\";\n } else {\n div.style.fontWeight = \"500\";\n }\n\n div.innerHTML = \"<div>\" + a_disp + \"</div><div>/</div><div>\" + b_disp + \"</div>\";\n if (freq.playing) {\n div.style.backgroundColor = (0, _color2.default)(frac, add + add_on, mul_on);\n } else {\n div.style.backgroundColor = (0, _color2.default)(frac, add + add_off, mul_off);\n }\n }\n };\n\n freq.recolor(1, 1);\n\n if (_util.browser.isDesktop) {\n div.addEventListener(\"mousedown\", function (event) {\n if (event.button === 2) {\n // rightclick\n event.preventDefault();\n // notes.forEach((row) => row.forEach((note) => note.recolor(a, b)));\n is_split = [a, b];\n toggle(freq);\n return;\n }\n div.style.backgroundColor = (0, _color2.default)(frac, add + add_on, mul_on);\n dragging = true;\n if (instrument === _organ2.default) {\n toggle(freq);\n erasing = !freq.playing;\n } else {\n trigger(freq);\n }\n });\n div.addEventListener(\"mouseenter\", function () {\n div.style.backgroundColor = (0, _color2.default)(frac, add + add_on, mul_on);\n if (dragging) {\n if (instrument === _organ2.default) {\n if (erasing) {\n pause(freq);\n } else {\n toggle(freq);\n }\n } else {\n trigger(freq);\n }\n }\n });\n div.addEventListener(\"mouseleave\", function () {\n div.style.backgroundColor = (0, _color2.default)(frac, add + add_off, mul_off);\n });\n div.addEventListener(\"contextmenu\", function (event) {\n if (!event.ctrlKey || !event.metaKey || !event.altKey) {\n event.preventDefault();\n }\n });\n } else {\n div.addEventListener(\"touchstart\", function (e) {\n e.preventDefault();\n toggle(freq);\n erasing = !freq.playing;\n lastFreq = freq;\n });\n }\n document.body.appendChild(div);\n return freq;\n}\n\nfunction bind() {\n window.addEventListener(\"resize\", build);\n if (_util.browser.isDesktop) {\n document.addEventListener(\"mousedown\", function (event) {\n if (event.button !== 2) {\n dragging = true;\n }\n });\n document.addEventListener(\"mouseup\", function () {\n dragging = false;\n });\n } else {\n document.addEventListener(\"touchstart\", function (e) {\n e.preventDefault();\n dragging = true;\n });\n document.addEventListener(\"touchmove\", function (e) {\n e.preventDefault();\n var x = Math.floor(e.touches[0].pageX / s);\n var y = Math.floor(e.touches[0].pageY / s);\n if (!(x in notes) || !(y in notes[x])) return;\n var freq = notes[x][y];\n if (freq !== lastFreq) {\n if (dragging) {\n if (erasing) {\n pause(freq);\n } else {\n toggle(freq);\n }\n }\n lastFreq = freq;\n }\n });\n document.addEventListener(\"touchend\", function () {\n dragging = false;\n });\n }\n}\n\nfunction swap_instrument() {\n instrument = instrument === _kalimba2.default ? _organ2.default : _kalimba2.default;\n}\n\nfunction keydown(e) {\n // console.log(e.keyCode)\n if (e.altKey || e.ctrlKey || e.metaKey) return;\n var step = 1;\n if (e.shiftKey) {\n step += 4;\n }\n switch (e.keyCode) {\n case 37:\n // left\n base_x = Math.max(0, base_x - step);\n rebuild();\n break;\n case 38:\n // up\n base_y = Math.max(0, base_y - step);\n rebuild();\n break;\n case 39:\n // right\n base_x += step;\n rebuild();\n break;\n case 40:\n // down\n base_y += step;\n rebuild();\n break;\n }\n}\nwindow.addEventListener(\"keydown\", keydown, true);\n\n_keys2.default.listen(function (index) {\n index += 7;\n var x = index % 7;\n var y = Math.floor(index / 7);\n var a = x;\n var b = y + 1;\n var freq = notes[a][b];\n console.log(a, b, freq.frequency);\n trigger(freq);\n // const freq = scales.current().index(index)\n // document.body.style.backgroundColor = color( index / scales.current().scale.length )\n // instrument.toggle(freq)\n});\n\nvar hash = window.location.hash || window.location.search;\nif (hash.match(\"sin\") || hash.match(\"organ\")) {\n instrument = _organ2.default;\n}\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./client/index.js\n// module id = 10\n// module chunks = 0","\"use strict\";\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\n/**\n * StartAudioContext.js\n * @author Yotam Mann\n * @license http://opensource.org/licenses/MIT MIT License\n * @copyright 2016 Yotam Mann\n */\n(function (root, factory) {\n if (typeof define === \"function\" && define.amd) {\n define([], factory);\n } else if ((typeof module === \"undefined\" ? \"undefined\" : _typeof(module)) === \"object\" && module.exports) {\n module.exports = factory();\n } else {\n root.StartAudioContext = factory();\n }\n})(undefined, function () {\n /**\n * The StartAudioContext object\n */\n var StartAudioContext = {\n /**\n * The audio context passed in by the user\n * @type {AudioContext}\n */\n context: null,\n /**\n * The TapListeners bound to the elements\n * @type {Array}\n * @private\n */\n _tapListeners: [],\n /**\n * Callbacks to invoke when the audio context is started\n * @type {Array}\n * @private\n */\n _onStarted: []\n };\n\n /**\n * Set the context\n * @param {AudioContext} ctx\n * @returns {StartAudioContext}\n */\n StartAudioContext.setContext = function (ctx) {\n StartAudioContext.context = ctx;\n return StartAudioContext;\n };\n\n /**\n * Add a tap listener to the audio context\n * @param {Array|Element|String|jQuery} element\n * @returns {StartAudioContext}\n */\n StartAudioContext.on = function (element) {\n if (Array.isArray(element) || NodeList && element instanceof NodeList) {\n for (var i = 0; i < element.length; i++) {\n StartAudioContext.on(element[i]);\n }\n } else if (typeof element === \"string\") {\n StartAudioContext.on(document.querySelectorAll(element));\n } else if (element.jquery && typeof element.toArray === \"function\") {\n StartAudioContext.on(element.toArray());\n } else if (Element && element instanceof Element) {\n //if it's an element, create a TapListener\n var tap = new TapListener(element, onTap);\n StartAudioContext._tapListeners.push(tap);\n }\n return StartAudioContext;\n };\n\n /**\n * Bind a callback to when the audio context is started.\n * @param {Function} cb\n * @return {StartAudioContext}\n */\n StartAudioContext.onStarted = function (cb) {\n //if it's already started, invoke the callback\n if (StartAudioContext.isStarted()) {\n cb();\n } else {\n StartAudioContext._onStarted.push(cb);\n }\n return StartAudioContext;\n };\n\n /**\n * returns true if the context is started\n * @return {Boolean}\n */\n StartAudioContext.isStarted = function () {\n return StartAudioContext.context !== null && StartAudioContext.context.state === \"running\";\n };\n\n /**\n * @class Listens for non-dragging tap ends on the given element\n * @param {Element} element\n * @internal\n */\n var TapListener = function TapListener(element) {\n this._dragged = false;\n\n this._element = element;\n\n this._bindedMove = this._moved.bind(this);\n this._bindedEnd = this._ended.bind(this);\n\n element.addEventListener(\"touchmove\", this._bindedMove);\n element.addEventListener(\"touchend\", this._bindedEnd);\n element.addEventListener(\"mouseup\", this._bindedEnd);\n };\n\n /**\n * drag move event\n */\n TapListener.prototype._moved = function (e) {\n this._dragged = true;\n };\n\n /**\n * tap ended listener\n */\n TapListener.prototype._ended = function (e) {\n if (!this._dragged) {\n onTap();\n }\n this._dragged = false;\n };\n\n /**\n * remove all the bound events\n */\n TapListener.prototype.dispose = function () {\n this._element.removeEventListener(\"touchmove\", this._bindedMove);\n this._element.removeEventListener(\"touchend\", this._bindedEnd);\n this._element.removeEventListener(\"mouseup\", this._bindedEnd);\n this._bindedMove = null;\n this._bindedEnd = null;\n this._element = null;\n };\n\n /**\n * Invoked the first time of the elements is tapped.\n * Creates a silent oscillator when a non-dragging touchend\n * event has been triggered.\n */\n function onTap() {\n //start the audio context with a silent oscillator\n if (StartAudioContext.context && !StartAudioContext.isStarted()) {\n var osc = StartAudioContext.context.createOscillator();\n var silent = StartAudioContext.context.createGain();\n silent.gain.value = 0;\n osc.connect(silent);\n silent.connect(StartAudioContext.context.destination);\n var now = StartAudioContext.context.currentTime;\n osc.start(now);\n osc.stop(now + 0.5);\n }\n\n //dispose all the tap listeners\n if (StartAudioContext._tapListeners) {\n for (var i = 0; i < StartAudioContext._tapListeners.length; i++) {\n StartAudioContext._tapListeners[i].dispose();\n }\n StartAudioContext._tapListeners = null;\n }\n //the onstarted callbacks\n if (StartAudioContext._onStarted) {\n for (var j = 0; j < StartAudioContext._onStarted.length; j++) {\n StartAudioContext._onStarted[j]();\n }\n StartAudioContext._onStarted = null;\n }\n }\n\n return StartAudioContext;\n});\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./client/lib/startAudioContext.js\n// module id = 11\n// module chunks = 0","/**\n*\n*\tVALIDATE: function\n*\n*\n*\tDESCRIPTION:\n*\t\t- Validates if a value is a function.\n*\n*\n*\tNOTES:\n*\t\t[1]\n*\n*\n*\tTODO:\n*\t\t[1]\n*\n*\n*\tLICENSE:\n*\t\tMIT\n*\n*\tCopyright (c) 2014. Athan Reines.\n*\n*\n*\tAUTHOR:\n*\t\tAthan Reines. kgryte@gmail.com. 2014.\n*\n*/\n\n'use strict';\n\n/**\n* FUNCTION: isFunction( value )\n*\tValidates if a value is a function.\n*\n* @param {*} value - value to be validated\n* @returns {Boolean} boolean indicating whether value is a function\n*/\nfunction isFunction( value ) {\n\treturn ( typeof value === 'function' );\n} // end FUNCTION isFunction()\n\n\n// EXPORTS //\n\nmodule.exports = isFunction;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/validate.io-function/lib/index.js\n// module id = 12\n// module chunks = 0","/**\n*\n*\tVALIDATE: integer-array\n*\n*\n*\tDESCRIPTION:\n*\t\t- Validates if a value is an integer array.\n*\n*\n*\tNOTES:\n*\t\t[1]\n*\n*\n*\tTODO:\n*\t\t[1]\n*\n*\n*\tLICENSE:\n*\t\tMIT\n*\n*\tCopyright (c) 2015. Athan Reines.\n*\n*\n*\tAUTHOR:\n*\t\tAthan Reines. kgryte@gmail.com. 2015.\n*\n*/\n\n'use strict';\n\n// MODULES //\n\nvar isArray = require( 'validate.io-array' ),\n\tisInteger = require( 'validate.io-integer' );\n\n\n// IS INTEGER ARRAY //\n\n/**\n* FUNCTION: isIntegerArray( value )\n*\tValidates if a value is an integer array.\n*\n* @param {*} value - value to be validated\n* @returns {Boolean} boolean indicating if a value is an integer array\n*/\nfunction isIntegerArray( value ) {\n\tvar len;\n\tif ( !isArray( value ) ) {\n\t\treturn false;\n\t}\n\tlen = value.length;\n\tif ( !len ) {\n\t\treturn false;\n\t}\n\tfor ( var i = 0; i < len; i++ ) {\n\t\tif ( !isInteger( value[i] ) ) {\n\t\t\treturn false;\n\t\t}\n\t}\n\treturn true;\n} // end FUNCTION isIntegerArray()\n\n\n// EXPORTS //\n\nmodule.exports = isIntegerArray;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/validate.io-integer-array/lib/index.js\n// module id = 13\n// module chunks = 0","/**\n*\n*\tVALIDATE: integer\n*\n*\n*\tDESCRIPTION:\n*\t\t- Validates if a value is an integer.\n*\n*\n*\tNOTES:\n*\t\t[1]\n*\n*\n*\tTODO:\n*\t\t[1]\n*\n*\n*\tLICENSE:\n*\t\tMIT\n*\n*\tCopyright (c) 2014. Athan Reines.\n*\n*\n*\tAUTHOR:\n*\t\tAthan Reines. kgryte@gmail.com. 2014.\n*\n*/\n\n'use strict';\n\n// MODULES //\n\nvar isNumber = require( 'validate.io-number' );\n\n\n// ISINTEGER //\n\n/**\n* FUNCTION: isInteger( value )\n*\tValidates if a value is an integer.\n*\n* @param {Number} value - value to be validated\n* @returns {Boolean} boolean indicating whether value is an integer\n*/\nfunction isInteger( value ) {\n\treturn isNumber( value ) && value%1 === 0;\n} // end FUNCTION isInteger()\n\n\n// EXPORTS //\n\nmodule.exports = isInteger;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/validate.io-integer/lib/index.js\n// module id = 14\n// module chunks = 0","/**\n*\n*\tVALIDATE: number\n*\n*\n*\tDESCRIPTION:\n*\t\t- Validates if a value is a number.\n*\n*\n*\tNOTES:\n*\t\t[1]\n*\n*\n*\tTODO:\n*\t\t[1]\n*\n*\n*\tLICENSE:\n*\t\tMIT\n*\n*\tCopyright (c) 2014. Athan Reines.\n*\n*\n*\tAUTHOR:\n*\t\tAthan Reines. kgryte@gmail.com. 2014.\n*\n*/\n\n'use strict';\n\n/**\n* FUNCTION: isNumber( value )\n*\tValidates if a value is a number.\n*\n* @param {*} value - value to be validated\n* @returns {Boolean} boolean indicating whether value is a number\n*/\nfunction isNumber( value ) {\n\treturn ( typeof value === 'number' || Object.prototype.toString.call( value ) === '[object Number]' ) && value.valueOf() === value.valueOf();\n} // end FUNCTION isNumber()\n\n\n// EXPORTS //\n\nmodule.exports = isNumber;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/validate.io-number/lib/index.js\n// module id = 15\n// module chunks = 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