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