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61 lines
2 KiB
HTML
61 lines
2 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>
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Test Cascade of Mono Convolvers
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</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/webaudio/resources/audit-util.js"></script>
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<script src="/webaudio/resources/audit.js"></script>
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</head>
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<body>
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<script id="layout-test-code">
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let audit = Audit.createTaskRunner();
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// Arbitrary sample rate and reasonably short duration
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let sampleRate = 8000;
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let duration = 0.25;
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let renderFrames = duration * sampleRate;
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audit.define(
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{label: 'cascade-mono', description: 'Cascaded mono convolvers'},
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(task, should) => {
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// Cascade two convolvers with mono responses and verify that the
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// output is not silent.
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let context = new OfflineAudioContext(1, renderFrames, sampleRate);
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let b0 =
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new AudioBuffer({length: 5, sampleRate: context.sampleRate});
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b0.getChannelData(0)[1] = 1;
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let c0 = new ConvolverNode(
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context, {disableNormalization: true, buffer: b0});
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let b1 =
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new AudioBuffer({length: 5, sampleRate: context.sampleRate});
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b1.getChannelData(0)[2] = 1;
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let c1 = new ConvolverNode(
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context, {disableNormalization: true, buffer: b1});
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let src = new OscillatorNode(context);
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src.connect(c0).connect(c1).connect(context.destination);
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src.start();
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context.startRendering()
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.then(audioBuffer => {
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// Just verify the output is not silent
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let audio = audioBuffer.getChannelData(0);
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should(audio, 'Output of cascaded mono convolvers')
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.notBeConstantValueOf(0);
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})
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.then(() => task.done());
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});
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audit.run();
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</script>
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</body>
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</html>
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