The DelayNode interface represents a delay-line; an AudioNode audio-processing module that causes a delay between the arrival of an input data and its propagation to the output.

A DelayNode always has exactly one input and one output, both with the same amount of channels.

The DelayNode acts as a delay-line, here with a value of 1s.

When creating a graph that has a cycle, it is mandatory to have at least one DelayNode in the cycle, or the nodes taking part in the cycle will be muted.

EventTarget AudioNode DelayNode
Number of inputs 1
Number of outputs 1
Channel count mode "max"
Channel count 2 (not used in the default count mode)
Channel interpretation "speakers"



Creates a new instance of an DelayNode object instance. As an alternative, you can use the BaseAudioContext.createDelay() factory method; see Creating an AudioNode.

Instance properties

Inherits properties from its parent, AudioNode.

DelayNode.delayTime Read only

An a-rate AudioParam representing the amount of delay to apply, specified in seconds.

Instance methods

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


See BaseAudioContext.createDelay() for example code.


Web Audio API
# DelayNode

Browser compatibility

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See also