applause thing

1 files changed, 55 insertions, 0 deletions

diff --git a/client/lib/kalimba.js b/client/lib/kalimba.js
new file mode 100644
index 0000000..4663bdc
--- /dev/null
+++ b/client/lib/kalimba.js
@@ -0,0 +1,55 @@
+import Tone from 'tone'
+import { choice } from './util'
+
+const player_count = 4
+
+const compressor = new Tone.Compressor(-30, 3).toMaster()
+
+const samples = [
+  { root: 226, fn: 'samples/380737__cabled-mess__sansula-01-a-raw.wav', },
+  { root: 267, fn: 'samples/380736__cabled-mess__sansula-02-c-raw.wav', },
+  { root: 340, fn: 'samples/380735__cabled-mess__sansula-03-e-raw.wav', },
+  { root: 452, fn: 'samples/380733__cabled-mess__sansula-06-a-02-raw.wav', },
+//  { root: 507, fn: 'samples/380734__cabled-mess__sansula-07-b-h-raw.wav', },
+//  { root: 535, fn: 'samples/380731__cabled-mess__sansula-08-c-raw.wav', },
+//  { root: 671, fn: 'samples/380732__cabled-mess__sansula-09-e-raw.wav', },
+]
+
+samples.forEach((sample) => {
+  sample.players = []
+  sample.index = -1
+  for (let i = 0; i < player_count; i++) {
+    let fn = sample.fn
+    if (window.location.href.match(/asdf.us/)) {
+      fn = 'http://asdf.us/kalimba/' + fn.replace('wav','mp3')
+    }
+    let player = new Tone.Player({
+      url: fn,
+      retrigger: true,
+      playbackRate: 1,
+    })
+    player.connect(compressor)
+    sample.players.push(player)
+  }
+})
+
+function play (freq) {
+/*
+	while (freq < 440) {
+	  freq *= 2
+	}
+	while (freq > 880) {
+	  freq /= 2
+	}
+	freq /= 2
+*/
+  const best = { sample: choice(samples) }
+  best.sample.index = (best.sample.index + 1) % player_count
+
+  const player = best.sample.players[ best.sample.index ]
+  player.playbackRate = freq / best.sample.root
+  player.start()
+}
+
+export default { play }
+