Comfy Audio Nodes

[!WARNING] Abandoned repository

This repository is no longer maintained.

Please use Comfy Random Toolpack instead: https://github.com/dnnagy/comfy-random-toolpack

Audio nodes were moved there under the CRTP_ namespace:

• CRTP_NormalizeAudio
• CRTP_AudioProperties
• CRTP_SplitAudioChannels
• CRTP_MergeAudioChannels

A small collection of ComfyUI audio utility nodes for normalizing volume, inspecting audio properties, and splitting/merging channels.

Nodes

Normalize Audio

Normalize audio volume by peak or RMS level.

Inputs:

• audio: ComfyUI AUDIO input
• method: peak or rms
• target_dB: Target level in dBFS

Output:

• audio: Normalized ComfyUI AUDIO output

Peak normalization scales each clip so its highest sample reaches the target level. RMS normalization scales average loudness toward the target and clamps the result to avoid clipping.

Audio Properties

Inspect properties of an AUDIO signal. The audio input is optional; if it is not connected (or is None), isNone is True and all numeric outputs are -1 instead of crashing.

Inputs:

• audio (optional): ComfyUI AUDIO input

Outputs:

• samples (INT): Number of samples per channel
• duration (FLOAT): Duration in seconds (samples / sample_rate)
• sample_rate (INT): Sample rate in Hz
• num_channels (INT): Number of channels
• isNone (BOOLEAN): True if no audio is connected

Split Audio Channels

Split a multi-channel AUDIO into two mono AUDIO outputs.

Inputs:

• audio: ComfyUI AUDIO input

Outputs:

• left: First channel as mono AUDIO
• right: Second channel as mono AUDIO

For mono inputs, left and right are identical. For inputs with more than two channels, only the first two are returned.

Merge Audio Channels

Merge two mono AUDIO inputs into a single stereo AUDIO. The first channel of each input is used. Sample rates must match; if the lengths differ, the shorter input is zero-padded.

Inputs:

• left: Mono AUDIO for the left channel
• right: Mono AUDIO for the right channel

Output:

• audio: Stereo AUDIO

Installation

Clone this repository into your ComfyUI custom_nodes directory:

cd ComfyUI/custom_nodes
git clone https://github.com/dnnagy/comfy-audio-nodes.git

Restart ComfyUI, then search the node menu under the audio category for Normalize Audio, Audio Properties, Split Audio Channels, or Merge Audio Channels.

Registry

After publication, this node can be installed with:

comfy node install comfy-audio-nodes

License

MIT