License and Attribution

This page provides information about the open-source licenses and attributions for Soprano TTS and its dependencies. This website is an educational resource and is not officially affiliated with the Soprano TTS project.

Soprano TTS License

Soprano TTS is released under the Apache License 2.0, a permissive open-source license that allows users to freely use, modify, and distribute the software for both personal and commercial purposes.

Apache License 2.0 Summary

The Apache 2.0 license grants you the following freedoms:

  • Use the software for any purpose, including commercial applications
  • Modify the source code to suit your needs
  • Distribute original or modified versions of the software
  • Sublicense the software under compatible terms

The license requires:

  • Preservation of copyright and license notices
  • Statement of any significant changes made to the code
  • Inclusion of the full license text with distributions

Project Repository

The official Soprano TTS source code, documentation, and full license text can be found at:
github.com/ekwek1/soprano

Acknowledgements

Soprano TTS uses and/or is inspired by the following open-source projects. We acknowledge and thank the creators and contributors of these projects:

Vocos

Vocos is a vocoder architecture used in Soprano TTS for efficient and high-quality audio waveform generation. The vocoder-based decoder enables much faster synthesis compared to diffusion-based alternatives while maintaining excellent audio quality.

See the Vocos project for more information about this technology.

XTTS

XTTS (Cross-lingual Text-to-Speech) provided inspiration and technical insights for various aspects of the Soprano TTS architecture. The project demonstrates effective approaches to neural speech synthesis.

The XTTS project has contributed valuable knowledge to the TTS research community.

LMDeploy

LMDeploy is used by default in Soprano TTS to accelerate inference performance. This deployment toolkit provides optimized runtime for language models and related architectures, contributing significantly to Soprano's impressive speed.

LMDeploy enables the fast inference capabilities that are central to Soprano's design.

Fair Use Statement

This educational website is created for informational and educational purposes under fair use principles. The content provided here aims to help users understand and learn about Soprano TTS technology, its capabilities, and its applications.

We respect the intellectual property rights of all projects mentioned and encourage users to review the official repositories and documentation for authoritative information. All trademarks and project names mentioned belong to their respective owners.

Disclaimer

This website is an independent educational resource and is not officially affiliated with, endorsed by, or connected to the Soprano TTS project or its creator. Information presented here is based on publicly available documentation and is provided for educational purposes only.

For official information, support, and the most current updates, please visit the official Soprano TTS repository on GitHub.

Using Soprano TTS

If you plan to use Soprano TTS in your projects, please:

Additional Resources

For complete and authoritative information:

  • Visit the official Soprano repository: github.com/ekwek1/soprano
  • Read the full Apache 2.0 license text in the repository
  • Check the project's README for the latest acknowledgements and credits
  • Review the licenses of all dependencies before use

Note: License terms and project dependencies may change over time. Always refer to the official repository for the most current and accurate information. This page was last updated based on information available as of December 2025.