title: Convert AudioBuffer to ArrayBuffer
body: <p>I've been looking all over the internet for an answer to this question and I can't find any resources. Does anyone know how to use JavaScript to convert and AudioBuffer object to an ArrayBuffer? This is my current attempt</p>
  
  <pre><code>//Send audio data to websockets server
  function callback(stream) {
  
  var ws = new WebSocket("ws://localhost:8080");
  ws.binaryType = 'arraybuffer';
  
  var context = new webkitAudioContext();
  var mediaStreamSource = context.createMediaStreamSource(stream);
  console.log(mediaStreamSource);
  
  var request = new XMLHttpRequest();
  request.open('GET', 'http://s3.amazonaws.com/fldrMusic/01_-%20Fire%20Walker.mp3', true);    
  request.responseType = 'arraybuffer'; 
  
  console.log("Current 'request.response' value");  
  console.log(request.response);
  
  request.onload = function() {
    context.decodeAudioData(request.response, function(buffer){
  
      console.log("sent message");
      console.log(buffer); 
      ws.send(buffer);
  
      //Serialize javascript object
      console.log("sent message encoded");       
      var buff = Base64Binary.decodeArrayBuffer(buffer.toString());       
      console.log(buff);
  
  
    }, 
    function(buffer){ 
      alert("decode failed!");
    })
  } 
  
  request.send();
  }//end 'callback' function
  </code></pre>