From 93e654a02cef3d5913a2088d4c397418dc0cee2f Mon Sep 17 00:00:00 2001 From: pepper Date: Thu, 15 May 2014 19:06:59 -0700 Subject: doing this --- README | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 README (limited to 'README') diff --git a/README b/README new file mode 100644 index 0000000..543c840 --- /dev/null +++ b/README @@ -0,0 +1,37 @@ +jasmid - A Javascript MIDI file reader and synthesiser + +Originally presented at BarCamp London 8, 13-14 November 2010 + +Instructions: +Open index.html in browser. Turn up volume. Click on link. + +Sound output is via one of the following mechanisms, according to what your +browser supports: +* Mozilla Audio Data API +* Web Audio API + +* a Flash fallback originally taken from dynamicaudio.js by Ben Firshman + and hacked around by me. + + +The code: +stream.js - helper library for reading a string as a stream of typed data +midifile.js - parses the MIDI file format into a header and a list of tracks, + each consisting of a list of event objects +replayer.js - steps over the data structure generated by midifile.js and calls + the appropriate operations on the synthesiser +synth.js - audio synthesiser; generates waveforms according to tweakable + parameters +audio.js - passes the generated waveform to either the Audio Data API or the + Flash fallback widget (da.swf) + + +Limitations: +* The only event types supported by replayer.js are note on, note off, tempo + change and program change +* There are currently only two instrument presets defined in synth.js - one for + strings and a 'piano' one for everything else - and neither of them are + particularly good (just a single volume-modulated sine wave). + + +Matt Westcott - @gasmanic - http://matt.west.co.tt/ -- cgit v1.2.3-70-g09d2