getFloatFrequencyData

Summary

Copies the current frequency data into the passed floating-point array. If the array has fewer elements than the frequencyBinCount, the excess elements will be dropped.

Method of apis/webaudio/AnalyserNodeapis/webaudio/AnalyserNode

Syntax

var  = AnalyserNode.getFloatFrequencyData(array);

Parameters

array

Data-type

void

Where frequency-domain analysis data will be copied.

Return Value

Returns an object of type

Float32Array

Examples

var audioCtx = new AudioContext();
var analyser = audioCtx.createAnalyser();
// Float32Array should be the same length as the frequencyBinCount
var myDataArray = new Float32Array(analyser.frequencyBinCount);
// fill the Float32Array with data returned from getFloatFrequencyData()
analyser.getFloatFrequencyData(myDataArray);

Related specifications

Web Audio API

W3C Editor’s Draft