crush me maybe

gistfile1.js

var url = 'http://static1.kevincennis.com/sounds/callmemaybe.mp3'
  , audio = new Audio(url)
  , context = new webkitAudioContext()
  , waveShaper = context.createWaveShaper()
  , bassify = context.createBiquadFilter()  
  , sourceNode

audio.addEventListener('canplaythrough', function(){
  sourceNode = context.createMediaElementSource(audio)
  sourceNode.connect(waveShaper)
  waveShaper.connect(bassify)
  bassify.connect(context.destination)
  bassify.type = 3
  bassify.frequency.value = 80
  bassify.gain.value = 10
  waveShaper.curve = boneCrushingDistortion(50);
  audio.currentTime = 28.3
  audio.play()
}, false)

function boneCrushingDistortion(amt){
  var steps = 1e4
    , curve = new Float32Array(steps)
    , deg = Math.PI / 180
    , phase  
    , i = 0
  for ( ; i < steps; i++ ) {
    phase = i * 2 / steps - 1
    curve[i] = (3 + amt) * phase * 20 * deg / (Math.PI + amt * Math.abs(phase))
  }
  return curve
}