AudioEqualizer3Band - ComfyUI Built-in Node Documentation

The Audio Equalizer (3-Band) node allows you to adjust the bass, mid, and treble frequencies of an audio waveform. It applies three separate filters: a low shelf for bass, a peaking filter for mids, and a high shelf for treble. Each band can be independently controlled with gain, frequency, and bandwidth settings.

Inputs

Parameter	Description	Data Type	Required	Range
`audio`	The input audio data containing the waveform and sample rate.	AUDIO	Yes	-
`low_gain_dB`	Gain for Low frequencies (Bass). Positive values boost, negative values cut. (default: 0.0)	FLOAT	No	-24.0 to 24.0
`low_freq`	Cutoff frequency for Low shelf filter in Hertz (Hz). (default: 100)	INT	No	20 to 500
`mid_gain_dB`	Gain for Mid frequencies. Positive values boost, negative values cut. (default: 0.0)	FLOAT	No	-24.0 to 24.0
`mid_freq`	Center frequency for the Mid peaking filter in Hertz (Hz). (default: 1000)	INT	No	200 to 4000
`mid_q`	Q factor (bandwidth) for the Mid peaking filter. Lower values create a wider band, higher values create a narrower band. (default: 0.707)	FLOAT	No	0.1 to 10.0
`high_gain_dB`	Gain for High frequencies (Treble). Positive values boost, negative values cut. (default: 0.0)	FLOAT	No	-24.0 to 24.0
`high_freq`	Cutoff frequency for High shelf filter in Hertz (Hz). (default: 5000)	INT	No	1000 to 15000

Note: The low_gain_dB, mid_gain_dB, and high_gain_dB parameters are only applied when their value is not zero. If a gain is set to 0.0, the corresponding filter stage is skipped.

Outputs

Output Name	Description	Data Type
`audio`	The processed audio data with the equalization applied, containing the modified waveform and the original sample rate.	AUDIO

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​Inputs

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Inputs

Outputs