AnalyserNode.constructor

The AnalyserNode constructor of the Web Audio API creates a new AnalyserNode object instance.

Syntax

var analyserNode = new AnalyserNode(context);
var analyserNode = new AnalyserNode(context, options);

Parameters

Inherits parameters from the AudioNodeOptions dictionary.

context

A reference to an AudioContext or OfflineAudioContext.

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.

Return value

A new AnalyserNode object instance.

Specifications

Browser Compatibility

See also

• BaseAudioContext.createAnalyser(), the equivalent factory method