2026-09-11 16:42:41 +00:00
|
|
|
# demucs
|
|
|
|
|
|
|
|
|
|
Source separation demos using [Demucs](https://github.com/facebookresearch/demucs) — splitting audio into stems (vocals, drums, bass, other).
|
2026-09-12 16:56:25 +00:00
|
|
|
|
|
|
|
|
## Demo run
|
|
|
|
|
|
|
|
|
|
Ran two-stem separation (vocals vs. everything else) on an RTX 3090 against
|
|
|
|
|
`media-files/audio/service-mbrs-ntscrm-01840194-01840194.m4a`:
|
|
|
|
|
|
|
|
|
|
```
|
|
|
|
|
python3 -m demucs --two-stems=vocals -n htdemucs \
|
|
|
|
|
-o separated \
|
|
|
|
|
../media-files/audio/service-mbrs-ntscrm-01840194-01840194.m4a
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
Took ~12s for 11 minutes of audio. Outputs `vocals.wav` and `no_vocals.wav` (44.1kHz stereo PCM,
|
|
|
|
|
duration matches source) under `separated/htdemucs/<track-name>/` — gitignored, left on the GPU
|
|
|
|
|
box at `/root/projects/audio-demo/repo/demucs/separated/`.
|
|
|
|
|
|
2026-09-12 17:44:00 +00:00
|
|
|
Full-length MP3 versions (128kbps, ~10MB each) are committed as `vocals.mp3` and
|
|
|
|
|
`no_vocals.mp3` in this directory so both stems are reviewable directly from Gitea without
|
|
|
|
|
needing local playback or GPU-box access.
|
|
|
|
|
|
2026-09-12 16:56:25 +00:00
|
|
|
**Known gotcha:** demucs 4.1.0's package metadata doesn't declare `numpy` as a dependency even
|
|
|
|
|
though `demucs/transformer.py` imports it directly — `pip install demucs` alone leaves the env
|
|
|
|
|
broken (`ModuleNotFoundError: No module named 'numpy'` at runtime). Install `numpy` explicitly
|
|
|
|
|
alongside it.
|
|
|
|
|
|
|
|
|
|
The isolated `vocals.wav` is intended as the clean reference/source audio for a voice-cloning TTS
|
|
|
|
|
step (see top-level README for the planned audio-translation pipeline).
|
