# Waveroom — model and open-source notices

Reviewed: 2026-09-13. This document accompanies Waveroom's browser-based vocal separation components. It is a component notice, not a grant of rights to uploaded music or a complete audit of every web-app dependency.

## Model delivery and provenance

The current separator provides two stems (vocals and instrumental) using UVR on all devices. iPhone uses its existing compatibility model. The legacy desktop Demucs endpoint is disabled; there is no Demucs runtime or four-stem output in this version.

The browser requests the assets below from Waveroom's same-origin endpoints. The server can stream the configured upstream or a cached R2 object at `models/v1/<filename>`. This review identifies the configured sources; it does **not** establish byte-for-byte identity of every cached production object.

| Endpoint | Asset | Configured distribution source | Origin / status |
| --- | --- | --- | --- |
| `/api/vocal-model/mobile` (desktop, Android, iPad) | `UVR-MDX-NET-Inst_HQ_3.onnx` | [notabilia/uvr5-models](https://huggingface.co/notabilia/uvr5-models) | [Ultimate Vocal Remover](https://github.com/Anjok07/ultimatevocalremovergui); the mirror is not substituted for the original author. |
| `/api/vocal-model/iphone` | `UVR_MDXNET_3_9662.onnx` | [Politrees/UVR_resources](https://huggingface.co/Politrees/UVR_resources) | [Ultimate Vocal Remover](https://github.com/Anjok07/ultimatevocalremovergui); the resource distributor is not substituted for the original author. |

### UVR authors and model notices

Original project: [Anjok07/ultimatevocalremovergui](https://github.com/Anjok07/ultimatevocalremovergui). Core developer credits include Anjok07 and aufr33; original MDX-Net architecture credits include Kuielab & Woosung Choi, with training-script support credited to KimberleyJSN. See the [original project credits](https://github.com/Anjok07/ultimatevocalremovergui#credits) for the complete list.

UVR's original LICENSE_TEXT identifies its copyright holder and requests credit for outside projects using its models or code. The permission and disclaimer text is preserved below. The [original LICENSE_TEXT source excerpt](/licenses/uvr-LICENSE_TEXT.py.txt) is also included without executing it. UVR's original model-use statement is stronger evidence than a mirror's license tag, but this review is not a file-specific legal clearance or a verification of the cached binary.

## Ultimate Vocal Remover — MIT notice

Source: [original LICENSE_TEXT](https://raw.githubusercontent.com/Anjok07/ultimatevocalremovergui/5517e0cf0d1acd16a1618eeedec596957523f9e1/gui_data/constants.py)
[Download copyright and complete MIT text](/licenses/uvr-MIT.txt)

```text
MIT License

Copyright (c) 2022 Ultimate Vocal Remover

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
```

## K.G.Studio-derived browser runner

Powered by K.G.Studio
© 2025-2026 Xiaohan Tian

Waveroom's `mobile-mdx.ts` is an adapted, modified low-memory browser separator; it is not the unmodified K.G.Studio application. The original adaptation revision was not recorded. The reviewed [K.G.Studio source](https://raw.githubusercontent.com/KGAudioLab/K.G.Studio/8fd667fa1c37bfb5ad1f0918d6c7892bc933f357/LICENSE) uses Apache-2.0 **with additional terms**, including attribution and a restriction concerning patent applications. It must not be described as MIT or as unmodified Apache-2.0.

- [Complete upstream LICENSE, including its additional terms and third-party notices](/licenses/kg-studio-LICENSE.txt)
- [Complete Apache License 2.0](/licenses/Apache-2.0.txt)
- [Original project](https://github.com/KGAudioLab/K.G.Studio)

The upstream LICENSE contains notices for the upstream application as a whole; inclusion does not mean Waveroom uses all the components named there.

## ONNX Runtime Web 1.27.0

Copyright (c) Microsoft Corporation

- [Complete MIT license](/licenses/onnxruntime-MIT.txt)
- [Original project](https://github.com/microsoft/onnxruntime)
- [Upstream third-party notices for this version](https://github.com/microsoft/onnxruntime/blob/v1.27.0/ThirdPartyNotices.txt)

## Historical releases

Demucs and demucs-web are no longer used in this version. Their original notices remain available for previously distributed releases: [Demucs code MIT](/licenses/demucs-MIT.txt) and [demucs-web MIT](/licenses/demucs-web-MIT.txt). These historical notices are not model-weight authorization or a statement of current use. Older cached copies cannot be recalled by a source update.

## Distribution

This notice and the accompanying files in `/licenses/` are shipped as public web-app assets. Model download responses reference this notice using an HTTP Link header, including cached-model responses. The website footer and the vocal-remover notice area link to the human-readable [open-source license page](/open-source-licenses).

Original license texts retain their original language. Project names identify upstream sources; they do not imply endorsement of Waveroom.