test_stereoPanningWithGain.html

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<!DOCTYPE HTML>

<html>

<head>

  <title>Test stereo equalpower panning with a GainNode</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />

</head>

<body>

<pre id="test">

<script src="webaudio.js" type="text/javascript"></script>

<script class="testbody" type="text/javascript">

const size = 256;

var gTest = {

  numberOfChannels: 2,

  createGraph(context) {

    var panner = context.createPanner();

    panner.setPosition(1.0, 0.0, 0.0); // reference distance the right

    panner.panningModel = "equalpower";

    var gain = context.createGain();

    gain.gain.value = -0.5;

    gain.connect(panner);

    var buffer = context.createBuffer(2, 2, context.sampleRate);

    buffer.getChannelData(0)[0] = 1.0;

    buffer.getChannelData(1)[1] = 1.0;

    var source = context.createBufferSource();

    source.buffer = buffer;

    source.connect(gain);

    source.start(0);

    return panner;

},

  createExpectedBuffers(context) {

    var expectedBuffer = context.createBuffer(2, size, context.sampleRate);

    expectedBuffer.getChannelData(1)[0] = -0.5;

    expectedBuffer.getChannelData(1)[1] = -0.5;

    return expectedBuffer;

},

};

runTest();

</script>

</pre>

</body>

</html>