EmptyAudio - ComfyUI Built-in Node Documentation

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The EmptyAudio node generates a silent audio clip with specified duration, sample rate, and channel configuration. It creates a waveform containing all zeros, producing complete silence for the given duration. This node is useful for creating placeholder audio or generating silent segments in audio workflows.

Inputs

Parameter	Data Type	Required	Range	Description
`duration`	FLOAT	Yes	0.0 to 1.8446744073709552e+19	Duration of the empty audio clip in seconds (default: 60.0)
`sample_rate`	INT	Yes	-	Sample rate of the empty audio clip (default: 44100)
`channels`	INT	Yes	1 to 2	Number of audio channels (1 for mono, 2 for stereo) (default: 2)

Outputs

Output Name	Data Type	Description
`AUDIO`	AUDIO	The generated silent audio clip containing waveform data and sample rate information

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