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<!doctype html>
<html>
<head>
<title>Test Osc.detune Overflow</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/webaudio/resources/audit.js"></script>
<script src="/webaudio/resources/audit-util.js"></script>
</head>
<body>
<script>
const sampleRate = 44100;
const renderLengthFrames = RENDER_QUANTUM_FRAMES;
let audit = Audit.createTaskRunner();
audit.define('detune overflow', async (task, should) => {
let context =
new OfflineAudioContext(1, renderLengthFrames, sampleRate);
// This value of frequency and detune results in a computed frequency of
// 440*2^(153600/1200) = 1.497e41. The frequency needs to be clamped to
// Nyquist. But a sine wave at Nyquist frequency is all zeroes. Verify
// the output is 0.
let osc = new OscillatorNode(context, {frequency: 440, detune: 153600});
osc.connect(context.destination);
let buffer = await context.startRendering();
let output = buffer.getChannelData(0);
should(output, 'Osc freq and detune outside nominal range')
.beConstantValueOf(0);
task.done();
});
audit.run();
</script>
</body>
</html>
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