Licences · Open source

Open-source licences

Last updated: 4 September 2026

In short — Jamodio's Noise Filter (the one that strips your instrument out of your talkback mic and closes the mic when you are not speaking) is built on two open-source components. They run entirely on your own computer: your voice is never sent to an analysis server, and the feature costs nothing.

1. Noise Filter components

DeepFilterNet — denoising

Separates the voice from everything else the mic picks up. DeepFilterNet, copyright © Hendrik Schröter and contributors. Distributed under your choice of MIT or Apache-2.0; the model weights ship under the same licence and were trained on the DNS-Challenge corpus.

Silero VAD — speech detection

tract — inference engine

Both models run on tract (Sonos), an ONNX engine written in Rust, under MIT or Apache-2.0. No extra native dependency is installed on your machine.

2. Yes, this is artificial intelligence

These are pre-trained neural networks. Three things worth stating plainly:

they run on your machine, never in the cloud;
your voice trains nobody — the models are frozen, shipped as they are;
they are free and will stay so: no third-party subscription is involved.

3. Licence texts

The full licence texts ship with the software, as those licences require: open the Audio Engine window and click “Licences”. The Apache-2.0 text is also available on apache.org.

4. Contact

Any question about these components or their use: contact@jamodio.com.