code: function() {
  		this.buffer = this.context.createBuffer(1, this.bufferLength, this.context.sampleRate);
  		this.bufferData = this.buffer.getChannelData( 0 );
  
  		this.bufferSource = this.context.createBufferSource();
  		this.bufferSource.connect( this.gainNode );
  	}
docs: Initialize audio buffer.