EmptyAudio - ComfyUI Built-in Node Documentation

Complete documentation for the EmptyAudio node in ComfyUI. Learn its inputs, outputs, parameters and usage.

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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