demucs-onnx — browser vocals demo

Runs HT-Demucs FT vocals (166 MB, fp16weights) entirely in your tab via onnxruntime-web. No upload — the audio never leaves your machine.

1. Pick an audio file

Best results with a stereo 44.1 kHz WAV/MP3 between 5 and 30 seconds.

No file loaded.

What this does

Downloads htdemucs_ft_vocals_fp16weights.onnx (~166 MB) from HF on first run. The browser caches it forever.
Chunks long inputs into 7.8 s segments with 25% overlap and runs them sequentially.
Reassembles the vocals stem and produces a 16-bit PCM WAV at the original sample rate.
Source: examples/browser/index.html in the demucs-onnx repo.