DA_AudioDebug

Nobody's searching for this one yet - it hasn't picked up a single impression - but the job it does is one you'll want the moment you're building anything with audio in ComfyUI: a quick, honest look at what's actually flowing through an AUDIO connection before you trust it further downstream.

What it does

One required input, audio, typed AUDIO. One output, a STRING. Feed it whatever's coming out of an audio loader, an extracted video soundtrack, or any other node producing an AUDIO-typed connection, and it gives you back a plain-text summary: number of channels, sample rate, duration, and the underlying tensor shape. That's the entire node - a debug probe, not a processor. It doesn't render anything on its own; wire the STRING output into a text-preview node to actually see the summary, since this node's category is literally "debug" and its job ends at producing the text.

Genuinely useful before you wire audio into anything that has strict expectations - checking a loaded file's sample rate matches what a downstream node wants, confirming a mono vs. stereo assumption, or just sanity-checking that what you think is a 10-second clip is actually 10 seconds.

Audio in ComfyUI is a newer, less standardized corner of the ecosystem than images or latents - audio-driven video generation, voice-conditioned pipelines, and post-production audio nodes are all still comparatively young, and debugging a mismatched shape or an unexpected sample rate several nodes deep in a pipeline is genuinely painful without something like this. A debug probe that just tells you, in plain text, exactly what an AUDIO connection actually contains is a small thing, but it's the kind of small thing that saves real time the first time an audio pipeline behaves unexpectedly and you need to find out which node introduced the problem.

Installing it

ComfyUI Manager: search DemonAlone-nodes-ComfyUI, install, restart. Manually:

cd ComfyUI/custom_nodes
git clone https://github.com/DemonAlone/SimpeStringGenerator_ComfyUI

No dependencies or downloads beyond core ComfyUI.

Where people get burned

If this node errors or the output string looks wrong, the most likely cause isn't the node itself - it's that whatever's feeding it isn't actually producing a proper AUDIO-typed connection. Some audio-adjacent nodes output raw waveforms, file paths, or other shapes that look like audio but aren't typed as ComfyUI's AUDIO type. Check that your upstream node explicitly outputs AUDIO before assuming this debug node is the thing that's broken.