title: Web audio api on jQuery touch move not working iOS
body: <p>Here's my code:</p>
  
  <pre><code>$(document).ready(function(){ 
  
  var audioCtx = new (window.AudioContext || window.webkitAudioContext)();
  var oscillator = audioCtx.createOscillator();
  var gainNode = audioCtx.createGain();
  oscillator.connect(gainNode);
  gainNode.connect(audioCtx.destination);
  oscillator.type = 'sine';
  gainNode.gain.value = 0;
  oscillator.start();
  
  document.addEventListener("touchmove", function(e) {
      e.preventDefault();
      var touch = e.touches[0];
      var x = touch.pageX;
      var y = touch.pageY;
      x = Math.round(x);
      y = Math.round(y);
  
      x = mRound(x, 20);
      y = mRound(y, 10);
  
      $("#coords").text(x + ", " + y);
  
      gainNode.gain.value = x / 10;
      oscillator.frequency.value = y;
  
  }, false);
  
  });
  
  function mRound(n, m){
  
  if(n &gt; 0)
      return Math.ceil(n/m) * m;
  else if( n &lt; 0)
      return Math.floor(n/m) * m;
  else
      return m;
  
  }
  </code></pre>
  
  <p>This works in chrome and Firefox on android but no sound plays in safari or chrome on iOS. The web audio api does work in safari because I have tested it using a much simpler script and 'touchmove' seems to work because the coordinates come up in #coords.</p>
  
  <p>Thanks.</p>