test_pannerNodeAbove.html

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<!DOCTYPE HTML>

<html>

<head>

  <title>Test PannerNode directly above</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">

var gTest = {

  numberOfChannels: 2,

  createGraph(context) {

    // An up vector will be made perpendicular to the front vector, in the

    // front-up plane.

    context.listener.setOrientation(0, 6.311749985202524e+307, 0, 0.1, 1000, 0);

    // Linearly dependent vectors are ignored.

    context.listener.setOrientation(0, 0, -6.311749985202524e+307, 0, 0, 6.311749985202524e+307);

    var panner = context.createPanner();

    panner.positionX.value = 2; // directly above

    panner.rolloffFactor = 0; // no distance gain

    panner.panningModel = "equalpower"; // no effect when directly above

    var source = context.createBufferSource();

    source.buffer = this.buffer;

    source.connect(panner);

    source.start(0);

    return panner;

},

  createExpectedBuffers(context) {

    var expectedBuffer = context.createBuffer(2, 2048, context.sampleRate);

    for (var i = 0; i < 2048; ++i) {

      // Different signals in left and right buffers

      expectedBuffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);

      expectedBuffer.getChannelData(1)[i] = Math.sin(220 * 2 * Math.PI * i / context.sampleRate);

    this.buffer = expectedBuffer;

    return expectedBuffer;

},

};

runTest();

</script>

</pre>

</body>

</html>