<!DOCTYPE HTML> <html> <head> <title>Test buffers do not interfere when scheduled in sequence</title> <script src="/tests/SimpleTest/SimpleTest.js"></script> <script type="text/javascript" src="webaudio.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" /> </head> <body> <pre id="test"> <script class="testbody" type="text/javascript"> var OFFSETS = [0.005, 0.01, 0.02, 0.03]; var LENGTH = 128; var gTest = { length: 128 * OFFSETS.length, numberOfChannels: 1, createGraph(context) { var gain = context.createGain(); // create a repeating sample var repeatingSample = context.createBuffer(1, 2, context.sampleRate); var c = repeatingSample.getChannelData(0); for (var i = 0; i < repeatingSample.length; ++i) { c[i] = i % 2 == 0 ? 1 : -1; } OFFSETS.forEach(function (offset, offsetIdx) { // Schedule a set of nodes to repeat the sample. for (var i = 0; i < LENGTH; i += repeatingSample.length) { var source = context.createBufferSource(); source.buffer = repeatingSample; source.connect(gain); source.start((offsetIdx * LENGTH + i + offset) / context.sampleRate); } buffer = context.createBuffer(1, LENGTH, context.sampleRate); c = buffer.getChannelData(0); for (var i = 0; i < buffer.length; ++i) { c[i] = i % 2 == 0 ? -1 : 1; } var source = context.createBufferSource(); source.buffer = buffer; source.connect(gain); source.start((offsetIdx * LENGTH + offset) / context.sampleRate); }); return gain; }, createExpectedBuffers(context) { return context.createBuffer(1, gTest.length, context.sampleRate); }, }; runTest(); </script> </pre> </body> </html>