test_pannerNode_maxDistance.html

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<html>

<head>

  <title>Test PannerNode outputs silence when the distance is greater than maxDist</title>

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

  <script 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">

// BUF_SIZE must be greater than HRTF delay.

const BUF_SIZE = 1024;

const sampleRate = 44100;

var types = [

  "equalpower",

  "HRTF"

async function test(panningModel) {

  var ac = new OfflineAudioContext(1, 1024, sampleRate);

  var osc = ac.createOscillator();

  var panner = new PannerNode(ac, {

    panningModel,

    distanceModel: "linear",

    maxDistance: 100,

    positionY: 200,

});

  ac.listener.setPosition(0, 0, 0);

  osc.connect(panner);

  panner.connect(ac.destination);

  osc.start();

  const buffer = await ac.startRendering()

  var silence = true;

  var array = buffer.getChannelData(0);

  for (var i = 0; i < buffer.length; i++) {

    if (array[i] != 0) {

      ok(false, "Found noise in the buffer.");

      silence = false;

  ok(silence, "The buffer is silent.");

add_task(async function() {

  await promiseHRTFReady(sampleRate);

  for (const panningModel of types) {

    await test(panningModel);

});

</script>

</pre>

</body>

</html>