<!DOCTYPE html>
<html class="reftest-wait">
<script>
var context = new window.AudioContext();
var source = context.createBufferSource();
source.buffer = context.createBuffer(1, 1, context.sampleRate);
source.onended =
  function(e) {
    setTimeout(
      function() {
        var panner = context.createPanner();
        source.connect(panner);
        panner.setVelocity(1.0, 0.0, 0.0);
        setTimeout(
          function() {
            document.documentElement.removeAttribute("class");
          },
          0);
      },
      0);
  };
source.start(0);
</script>
