VALL-E

An unofficial PyTorch implementation of VALL-E, based on the EnCodec tokenizer.

Get Started

A toy Google Colab example: . Please note that this example overfits a single utterance under the data/test and is not usable. The pretrained model is yet to come.

Requirements

Since the trainer is based on DeepSpeed, you will need to have a GPU that DeepSpeed has developed and tested against, as well as a CUDA or ROCm compiler pre-installed to install this package.

Install

pip install git+https://github.com/enhuiz/vall-e

Or you may clone by:

git clone --recurse-submodules https://github.com/enhuiz/vall-e.git

Note that the code is only tested under Python 3.10.7.

Train

Put your data into a folder, e.g. data/your_data. Audio files should be named with the suffix .wav and text files with .normalized.txt.
Quantize the data:

python -m vall_e.emb.qnt data/your_data

Generate phonemes based on the text:

python -m vall_e.emb.g2p data/your_data

Customize your configuration by creating config/your_data/ar.yml and config/your_data/nar.yml. Refer to the example configs in config/test and vall_e/config.py for details. You may choose different model presets, check vall_e/vall_e/__init__.py.
Train the AR or NAR model using the following scripts:

python -m vall_e.train yaml=config/your_data/ar_or_nar.yml

You may quit your training any time by just typing quit in your CLI. The latest checkpoint will be automatically saved.

Export

Both trained models need to be exported to a certain path. To export either of them, run:

python -m vall_e.export zoo/ar_or_nar.pt yaml=config/your_data/ar_or_nar.yml

This will export the latest checkpoint.

Synthesis

python -m vall_e <text> <ref_path> <out_path> --ar-ckpt zoo/ar.pt --nar-ckpt zoo/nar.pt

TODO

AR model for the first quantizer
Audio decoding from tokens
NAR model for the rest quantizers
Trainers for both models
Implement AdaLN for NAR model.
Sample-wise quantization level sampling for NAR training.
Pre-trained checkpoint and demos on LibriTTS
Synthesis CLI

Notice

EnCodec is licensed under CC-BY-NC 4.0. If you use the code to generate audio quantization or perform decoding, it is important to adhere to the terms of their license.

Citations

@article{wang2023neural,
  title={Neural Codec Language Models are Zero-Shot Text to Speech Synthesizers},
  author={Wang, Chengyi and Chen, Sanyuan and Wu, Yu and Zhang, Ziqiang and Zhou, Long and Liu, Shujie and Chen, Zhuo and Liu, Yanqing and Wang, Huaming and Li, Jinyu and others},
  journal={arXiv preprint arXiv:2301.02111},
  year={2023}
}

@article{defossez2022highfi,
  title={High Fidelity Neural Audio Compression},
  author={Défossez, Alexandre and Copet, Jade and Synnaeve, Gabriel and Adi, Yossi},
  journal={arXiv preprint arXiv:2210.13438},
  year={2022}
}

kevincaicedo/vall-ei