ChannelMergerNode

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2021.

The ChannelMergerNode interface, often used in conjunction with its opposite, ChannelSplitterNode, reunites different mono inputs into a single output. Each input is used to fill a channel of the output. This is useful for accessing each channels separately, e.g. for performing channel mixing where gain must be separately controlled on each channel.

Default channel merger node with six mono inputs combining to form a single output.

If ChannelMergerNode has one single output, but as many inputs as there are channels to merge; the number of inputs is defined as a parameter of its constructor and the call to AudioContext.createChannelMerger(). In the case that no value is given, it will default to 6.

Using a ChannelMergerNode, it is possible to create outputs with more channels than the rendering hardware is able to process. In that case, when the signal is sent to the AudioContext.listener object, supernumerary channels will be ignored.

EventTarget AudioNode ChannelMergerNode
Number of inputs variable; default to 6.
Number of outputs 1
Channel count mode "explicit"
Channel count 2 (not used in the default count mode)
Channel interpretation "speakers"

Constructor

ChannelMergerNode()

Creates a new ChannelMergerNode object instance.

Instance properties

No specific property; inherits properties from its parent, AudioNode.

Instance methods

No specific method; inherits methods from its parent, AudioNode.

Example

Specifications

Specification
Web Audio API
# ChannelMergerNode

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
ChannelMergerNode
ChannelMergerNode() constructor

Legend

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Full support
Full support

See also