GainNode: GainNode() constructor
The GainNode() constructor of the Web Audio API creates a new
GainNode object which is an AudioNode that represents a
change in volume.
Syntax
new GainNode(context, options)
Parameters
context-
A reference to a
BaseAudioContext, e.g. anAudioContext. optionsOptional-
Options are as follows:
gain-
The amount of gain to apply. This parameter is a-
rateand it's nominal range is (-∞,+∞). The default is1. channelCount-
Represents an integer used to determine how many channels are used when up-mixing and down-mixing connections to any inputs to the node. (See
AudioNode.channelCountfor more information.) Its usage and precise definition depend on the value ofchannelCountMode. channelCountMode-
Represents an enumerated value describing the way channels must be matched between the node's inputs and outputs. (See
AudioNode.channelCountModefor more information including default values.) channelInterpretation-
Represents an enumerated value describing the meaning of the channels. This interpretation will define how audio up-mixing and down-mixing will happen. The possible values are
"speakers"or"discrete". (SeeAudioNode.channelCountModefor more information including default values.)
Return value
A new GainNode object instance.
Specifications
| Specification |
|---|
| Web Audio API # dom-gainnode-constructor-gainnode |
Browser compatibility
| desktop | mobile | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
GainNode() constructor | |||||||||||