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<!DOCTYPE HTML>
<html>
<head>
<title>Distance effect of a PannerNode with the position set via AudioParams (Bug 1472550)</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">
SimpleTest.waitForExplicitFinish();
var o = new OfflineAudioContext(2, 256, 44100);
// We want a stereo constant source.
var b = o.createBuffer(2, 1, 44100);
b.getChannelData(0)[0] = 1;
b.getChannelData(1)[0] = 1;
var c = o.createBufferSource();
c.buffer = b;
c.loop = true;
var p = o.createPanner();
p.positionY.setValueAtTime(1, 0);
p.positionX.setValueAtTime(1, 0);
p.positionZ.setValueAtTime(1, 0);
// Set the listener somewhere far
o.listener.setPosition(20, 2, 20);
c.start();
c.connect(p).connect(o.destination);
o.startRendering().then((ab) => {
// Check that the distance attenuates the sound.
ok(ab.getChannelData(0)[0] < 0.1, "left channel must be very quiet");
ok(ab.getChannelData(1)[0] < 0.1, "right channel must be very quiet");
SimpleTest.finish();
});
</script>
</pre>
</body>
</html>
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