Tone.js/Tone/shim/AnalyserNode.js

define(["../core/Tone", "../shim/AudioContext"], function(Tone){

	/**
	 *  AnalyserNode.getFloatTimeDomainData polyfill
	 *  @private
	 */
	if (Tone.supported){
		if (!AnalyserNode.prototype.getFloatTimeDomainData){
			//referenced https://github.com/mohayonao/get-float-time-domain-data
			AnalyserNode.prototype.getFloatTimeDomainData = function(array){
				var uint8 = new Uint8Array(array.length);
				this.getByteTimeDomainData(uint8);
				for (var i = 0; i < uint8.length; i++){
					array[i] = (uint8[i] - 128) / 128;
				}
			};
		}
	}
});