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"



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.



Web Audio API
# ChannelMergerNode

Browser compatibility

BCD tables only load in the browser

See also