     # Need to get non-angular bindable components
     canvas = document.getElementById('audio-recorder-visualiser')
     audio = document.getElementById('audioPlayer')
-
-    audioCtx = new (window.AudioContext || webkitAudioContext)()
     canvasCtx = canvas.getContext("2d")
 
     $scope.playStop = () ->

    $scope.canRecord = true

    mediaRecorder = new recorderService()
    mediaRecorder.config.stopTracksAndCloseCtxWhenFinished = true
    mediaRecorder.config.createAnalyserNode = true
    mediaRecorder.em.addEventListener('recording', (evt) -> onNewRecording(evt))
    $scope.recordingAvailable = false
    $scope.isRecording = false

      draw = ->
        WIDTH = canvas.width
        HEIGHT = canvas.height
        requestAnimationFrame(draw)
        analyser.getByteTimeDomainData(dataArray)
        analyser.getByteFrequencyData(dataArray)
        # canvasCtx.fillstyle = '#2196F3'

        canvasCtx.clearRect(0, 0, WIDTH, HEIGHT)
        i = 0
        bar_width = 1
        while i < WIDTH
          bar_x = i * 14
          bar_y = HEIGHT / 2
          bar_height = -(dataArray[i] / 4) + 1
          canvasCtx.fillRect bar_x, bar_y, bar_width, bar_height
