Baseline Widely available
The GainNode interface represents a change in volume. It is an AudioNode audio-processing module that causes a given gain to be applied to the input data before its propagation to the output. A GainNode always has exactly one input and one output, both with the same number of channels.
The gain is a unitless value, changing with time, that is multiplied to each corresponding sample of all input channels. If modified, the new gain is instantly applied, causing unaesthetic 'clicks' in the resulting audio. To prevent this from happening, never change the value directly but use the exponential interpolation methods on the AudioParam interface.
1 Number of outputs 1 Channel count mode "max" Channel count 2 (not used in the default count mode) Channel interpretation "speakers" Constructor
GainNode()
Creates and returns a new GainNode object. As an alternative, you can use the BaseAudioContext.createGain() factory method; see Creating an AudioNode.
Inherits properties from its parent, AudioNode.
GainNode.gain Read only
An a-rate AudioParam representing the amount of gain to apply. You have to set AudioParam.value or use the methods of AudioParam to change the effect of gain.
No specific method; inherits methods from its parent, AudioNode.
See BaseAudioContext.createGain() for example code showing how to use an AudioContext to create a GainNode.
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