如何在opentok javascript SDK中更改音频输出？

var session = OT.initSession(apiKey, sessionId);

session.connect(token, function(error) {
  if (error) {
    console.log('Error connecting to session: ', error.message);
  } else {
    console.log('Connected to session');
  }
});

session.on('streamCreated', function(event) {
  var subscriberOptions = {
    insertMode: 'append',
    width: '100%',
    height: '100%'
  };

  var subscriber = session.subscribe(event.stream, 'subscriber', subscriberOptions, function(error) {
    if (error) {
      console.log('Error subscribing to stream: ', error.message);
    } else {
      console.log('Subscribed to stream');
    }
  });
});

var audioElement = subscriber.getAudioElement();

audioElement.setSinkId(deviceId)
  .then(function() {
    console.log('Audio output device changed');
  })
  .catch(function(error) {
    console.log('Error changing audio output device: ', error);
  });