chromium/chrome/test/data/webrtc/webrtc_audio_quality_test.html

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
<head>
  <title>WebRTC Automated Test</title>
  <script type="text/javascript" src="test_functions.js"></script>
  <script type="text/javascript" src="peerconnection.js"></script>
  <script type="text/javascript" src="munge_sdp.js"></script>
  <script type="text/javascript" src="getusermedia.js"></script>
  <script type="text/javascript" src="video_detector.js"></script>
  <script type="text/javascript" src="webaudio.js"></script>
  <script type="text/javascript" src="indexeddb.js"></script>
</head>
<body>
<table border="0">
  <tr>
    <td><audio id="local-view" autoplay muted></audio></td>
    <td><audio id="remote-view" autoplay></audio></td>
  </tr>
</table>
</body>
</html>