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Last change
on this file since 28388 was 28388, checked in by davidb, 11 years ago |
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Set of JS, CSS, PNG etc web resources to support a mixture of audio player/document display capabilities
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File size:
615 bytes
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| 1 | var Sink = require('../sink').Sink;
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| 2 |
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| 3 | function SineWave (sampleRate, frequency) {
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| 4 | var phase = 0;
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| 5 | var pi2 = Math.PI * 2;
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| 6 | var coEff = frequency / sampleRate * 0.5;
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| 7 | return function () {
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| 8 | phase = (phase + coEff) % 1;
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| 9 | return Math.sin(phase * pi2);
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| 10 | };
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| 11 | }
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| 12 |
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| 13 | var oscs;
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| 14 | var dev = Sink(function (buffer, channelCount) {
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| 15 | console.log('Filling data...');
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| 16 | for (var i=0; i<buffer.length; i+=channelCount) {
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| 17 | for (var n=0; n<channelCount; n++) {
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| 18 | buffer[i+n] = oscs[n]()
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| 19 | }
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| 20 | }
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| 21 | });
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| 22 |
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| 23 | oscs = [SineWave(dev.sampleRate, 440), SineWave(dev.sampleRate, 660)];
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| 24 |
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| 25 | setInterval(function () {
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| 26 | console.log(dev.sampleRate)
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| 27 | }, 10000);
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