Silverdaw Backup Stem Pack — htdemucs fine-tuned (ONNX)
An ONNX export of the Hybrid Transformer Demucs fine-tuned 4-stem model
(htdemucs_ft), used by Silverdaw as
its backup stem-separation engine. htdemucs_ft is a "bag" of four
specialist models — one per source — so vocals / drums / bass / other are all
native outputs.
Silverdaw's primary engine is the higher-quality RoFormer pack pair (vocals + rhythm); this model is used when those packs are not installed, or when the user explicitly selects the backup engine.
This repository is a re-host of
StemSplitio/htdemucs-ft-onnx
so Silverdaw can serve every model it needs from one self-owned location. The
weights and the export are unchanged (byte-identical; same SHA-256).
Files
| File | Size | Stem | SHA-256 |
|---|---|---|---|
htdemucs_ft_vocals.onnx | ~302 MB | vocals | 8c5d5e2da1f27050240bb80236673307ee3b40d4b064066d9350f4d64bfd544d |
htdemucs_ft_drums.onnx | ~302 MB | drums | f76b68af36066e38885b369299b5032a861038f9b49da5aa6cf1c31cfa69cf27 |
htdemucs_ft_bass.onnx | ~302 MB | bass | 2a74d9283fc2336fcc58d50f87a7080aff57aea372f65cfe3f0211ea1ff16182 |
htdemucs_ft_other.onnx | ~302 MB | other | 90e11806c1bb558ca9d9c7e909d28a2854f7f217982e90482dbed6442513daad |
Each file is a self-contained .onnx (fp32 weights, no external .data). fp32
is chosen over the fp16 variants for the CPU execution provider, where fp16 ops
are commonly emulated (slower) rather than accelerated.
Provenance & license
License: MIT.
- Weights — © Meta / Alexandre Défossez et al., Demucs v4 (Hybrid Transformer Demucs, fine-tuned), released under MIT.
- ONNX export — © StemSplitio
(
StemSplitio/htdemucs-ft-onnx). - Architecture / paper — Hybrid Transformers for Music Source Separation
(Rouard, Massa, Défossez; arXiv:2211.08553) /
facebookresearch/demucs(MIT).
Intended use
Designed for offline (non-real-time) stem separation inside a desktop DAW. It is not a real-time audio-callback model — run it on a worker/background thread.