| --- |
| license: other |
| license_name: mix-directive-model-license |
| license_link: LICENSE.md |
| library_name: onnx |
| pipeline_tag: audio-to-audio |
| tags: |
| - music-source-separation |
| - stem-separation |
| - mix-directive |
| --- |
| |
| # Mix Directive Stem Splitter (4-stem, v1) |
|
|
| The stem separation model used by the [Mix Directive](https://mixdirective.example) desktop |
| app. It splits a stereo mix into **drums**, **bass**, **other** and **vocals**. |
|
|
| **This model is proprietary.** It is published here only so the Mix Directive app can |
| download it on demand. Using it outside the app, redistributing it, or building on it is |
| not permitted: see [LICENSE.md](LICENSE.md). |
|
|
| ## Files |
|
|
| | File | What it is | SHA-256 | |
| |---|---|---| |
| | `model_fp16.onnx` | the model (ONNX, fp16 weights, 56 MB) | `f45b4b79dd08b9e0237bd7420b735659b043edb25b572949dbb4ae5ce3fe110b` | |
| | `model_config.json` | sources, sample rate, segment length, input normalisation | `af642c9ac4e3812449c847ec5bc969b15fa791faa4a5d14f2d2de3b7968db809` | |
|
|
| The app pins a specific commit of this repository and checks each file's SHA-256 before |
| using it. |
|
|
| ## Model |
|
|
| - Architecture: Hybrid Transformer Demucs (the open-source `demucs` 4.1 architecture, MIT), |
| 22.6M parameters, 44.1 kHz stereo, 6 s segments. |
| - Weights: trained from random initialisation by Mix Directive. No pretrained third-party |
| weights were used. |
| - Training data: music owned by the Mix Directive author, used with full rights. The model |
| does not contain or reproduce those recordings. |
|
|
| ## Intended use |
|
|
| Separating music the user has the right to process, inside the Mix Directive app (stem |
| extraction before mixing and Auto-Mix). Results can contain bleed between stems and |
| artefacts, especially in the "other" stem. |
|
|
| ## License |
|
|
| Mix Directive Stem Splitter Model License v1.0 — see [LICENSE.md](LICENSE.md). All rights |
| reserved. |
|
|
