Changes the gain / volume
summary (oneliner)
The Gain-op can be used to make an audio signal more silent.
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.
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Inputs
The audio signal you want to make more silent / louder
Amount of gain to apply, 0 = not audible, 1 = output will be as loud as the input signal, everything bigger than 1 will make the audio signal louder.
check to mute the signal
Outputs
Audio output which contains the the input signal with the gain applied, can be connected to the Ops.WebAudio.Output op e.g.