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This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.
The AnalyserNode constructor creates a new AnalyserNode object.
Syntax
var analyserNode = new AnalyserNode(context, options)
Parameters
- context
- A reference to an
AudioContext. - options Optional
- Options are as follows:
fftSize: The desired initial size of the FFT for frequency-domain analysis. The default is 2048.maxDecibels: The desired initial maximum power in dB for FFT analysis. The default is -30.minDecibels: The desired initial minimum power in dB for FFT analysis. The default is -100.smoothingTimeConstant: The desired initial smoothing constant for the FFT analysis. The default is 0.8
Specifications
| Specification | Status | Comment |
|---|---|---|
| Web Audio API The definition of 'AnalyserNode' in that specification. |
Working Draft | Initial definition. |
Browser Compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|
| Basic support | 55.0 | ? | ? | 42 | ? |
| Feature | Android | Android Webview | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile | Chrome for Android |
|---|---|---|---|---|---|---|---|---|
| Basic support | No support | 55.0 | ? | ? | ? | 42 | ? | 55.0 |