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whisperspeech

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WhisperSpeech

Test it out yourself in Colab

If you have questions or you want to help you can find us in the
#audio-generation channel on the LAION Discord server.

An Open Source text-to-speech system built by inverting Whisper.
Previously known as spear-tts-pytorch.

We want this model to be like Stable Diffusion but for speech – both
powerful and easily customizable.

We are working only with properly licensed speech recordings and all the
code is Open Source so the model will be always safe to use for
commercial applications.

Currently the models are trained on the English LibreLight dataset. In
the next release we want to target multiple languages (Whisper and
EnCodec are both multilanguage).





Progress update [2024-01-18]

We spend the last week optimizing inference performance. We integrated
torch.compile, added kv-caching and tuned some of the layers – we are
now working over 12x faster than real-time on a consumer 4090!

We also added an easy way to test voice-cloning. Here is a sample voice
cloned from a famous speech by Winston
Churchill:

https://github.com/collabora/WhisperSpeech/assets/107984/bd28110b-31fb-4d61-83f6-c997f560bc26

We can also mix languages in a single sentence (here the highlighted
English project names are seamlessly mixed into Polish speech):

To jest pierwszy test wielojęzycznego Whisper Speech modelu
zamieniającego tekst na mowę, który Collabora i Laion nauczyli na
superkomputerze Jewels.

https://github.com/collabora/WhisperSpeech/assets/107984/d7092ef1-9df7-40e3-a07e-fdc7a090ae9e

You can test all of these on
Collab.
A Huggingface Space is coming soon.





Progress update [2024-01-10]

We’ve pushed a new SD S2A model that is a lot faster while still
generating high-quality speech. We’ve also added an example of voice
cloning based on a reference audio file.

As always, you can check out our
Colab
to try it yourself!





Progress update [2023-12-10]

Another trio of models, this time they support multiple languages
(English and Polish). Here are two new samples for a sneak peek. You can
check out our
Colab
to try it yourself!

English speech, female voice (transferred from a Polish language
dataset):

https://github.com/collabora/WhisperSpeech/assets/107984/aa5a1e7e-dc94-481f-8863-b022c7fd7434

A Polish sample, male voice:

https://github.com/collabora/WhisperSpeech/assets/107984/4da14b03-33f9-4e2d-be42-f0fcf1d4a6ec

Older progress updates are archived
here





Downloads

We encourage you to start with the Google Colab link above or run the
provided notebook locally. If you want to download manually or train the
models from scratch then both the WhisperSpeech pre-trained
models as well as the
converted
datasets are
available on HuggingFace.





Roadmap





Architecture

The general architecture is similar to
AudioLM,
SPEAR TTS
from Google and MusicGen from
Meta. We avoided the NIH syndrome and built it on top of powerful Open
Source models: Whisper from OpenAI
to generate semantic tokens and perform transcription,
EnCodec from Meta for
acoustic modeling and
Vocos from Charactr Inc as
the high-quality vocoder.





Whisper for modeling semantic tokens

We utilize the OpenAI Whisper encoder block to generate embeddings which
we then quantize to get semantic tokens.

If the language is already supported by Whisper then this process
requires only audio files (without ground truth transcriptions).

Using Whisper for semantic token extraction diagram





EnCodec for modeling acoustic tokens

We use EnCodec to model the audio waveform. Out of the box it delivers
reasonable quality at 1.5kbps and we can bring this to high-quality by
using Vocos – a vocoder pretrained on EnCodec tokens.

EnCodec block diagram





Appreciation

Collabora logo      LAION logo

This work would not be possible without the generous sponsorships from:

We gratefully acknowledge the Gauss Centre for Supercomputing e.V.
(www.gauss-centre.eu) for funding part of this work by providing
computing time through the John von Neumann Institute for Computing
(NIC) on the GCS Supercomputer JUWELS Booster at Jülich Supercomputing
Centre (JSC), with access to compute provided via LAION cooperation on
foundation models research.

We’d like to also thank individual contributors for their great help in
building this model:





Consulting

We are available to help you with both Open Source and proprietary AI
projects. You can reach us via the Collabora website or on Discord
(
and
)





Citations

We rely on many amazing Open Source projects and research papers:

@article{SpearTTS,
  title = {Speak, Read and Prompt: High-Fidelity Text-to-Speech with Minimal Supervision},
  url = {https://arxiv.org/abs/2302.03540},
  author = {Kharitonov, Eugene and Vincent, Damien and Borsos, Zalán and Marinier, Raphaël and Girgin, Sertan and Pietquin, Olivier and Sharifi, Matt and Tagliasacchi, Marco and Zeghidour, Neil},
  publisher = {arXiv},
  year = {2023},
}

@article{MusicGen,
  title={Simple and Controllable Music Generation}, 
  url = {https://arxiv.org/abs/2306.05284},
  author={Jade Copet and Felix Kreuk and Itai Gat and Tal Remez and David Kant and Gabriel Synnaeve and Yossi Adi and Alexandre Défossez},
  publisher={arXiv},
  year={2023},
}

@article{Whisper
  title = {Robust Speech Recognition via Large-Scale Weak Supervision},
  url = {https://arxiv.org/abs/2212.04356},
  author = {Radford, Alec and Kim, Jong Wook and Xu, Tao and Brockman, Greg and McLeavey, Christine and Sutskever, Ilya},
  publisher = {arXiv},
  year = {2022},
}

@article{EnCodec
  title = {High Fidelity Neural Audio Compression},
  url = {https://arxiv.org/abs/2210.13438},
  author = {Défossez, Alexandre and Copet, Jade and Synnaeve, Gabriel and Adi, Yossi},
  publisher = {arXiv},
  year = {2022},
}

@article{Vocos
  title={Vocos: Closing the gap between time-domain and Fourier-based neural vocoders for high-quality audio synthesis}, 
  url = {https://arxiv.org/abs/2306.00814},
  author={Hubert Siuzdak},
  publisher={arXiv},
  year={2023},
}



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