WeNet

Docs | Tutorial | Papers | Runtime (x86) | Runtime (android)

We share neural Net together.

The main motivation of WeNet is to close the gap between research and production end-to-end (E2E) speech recognition models, to reduce the effort of productionizing E2E models, and to explore better E2E models for production.

Highlights

• Production first and production ready: The python code of WeNet meets the requirements of TorchScript, so the model trained by WeNet can be directly exported by Torch JIT and use LibTorch for inference. There is no gap between the research model and production model. Neither model conversion nor additional code is required for model inference.
• Unified solution for streaming and non-streaming ASR: WeNet implements Unified Two Pass (U2) framework to achieve accurate, fast and unified E2E model, which is favorable for industry adoption.
• Portable runtime: Several demos will be provided to show how to host WeNet trained models on different platforms, including server x86 and on-device android.
• Light weight: WeNet is designed specifically for E2E speech recognition, with clean and simple code. It is all based on PyTorch and its corresponding ecosystem. It has no dependency on Kaldi, which simplifies installation and usage.

Pretrained Models & Performance Benchmark

We release various pretrained models. Please see examples/$dataset/s0/README.md for model download links and WeNet benchmark on different speech datasets.

• AIShell-1
• AIShell-2
• LibriSpeech
• GigaSpeech
• Multi-Chinese trained using all open source Chinese corpus.

Installation

• Clone the repo

git clone https://github.com/wenet-e2e/wenet.git

• Install Conda: please see https://docs.conda.io/en/latest/miniconda.html
• Create Conda env: (PyTorch 1.6.0 is recommended. We met some error on NCCL when using 1.7.0 on 2080 Ti.)

# [option 1]
conda create -n wenet python=3.8
conda activate wenet
pip install -r requirements.txt
conda install pytorch==1.6.0 cudatoolkit=10.1 torchaudio=0.6.0 -c pytorch

# [option 2: working on machine with GPU 3090]
conda create -n wenet python=3.8
conda activate wenet
pip install -r requirements.txt
conda install pytorch torchvision torchaudio=0.8.0 cudatoolkit=11.1 -c pytorch -c conda-forge

• Optionally, if you want to use x86 runtime or language model(LM), you have to build the runtime as follows. Otherwise, you can just ignore this step.

# runtime build requires cmake 3.14 or above
cd runtime/server/x86
mkdir build && cd build && cmake .. && cmake --build .

Discussion & Communication

Please scan the QR code on the left to follow the offical account of WeNet.

In addition to discussing in Github Issues, we created a WeChat group for better discussion and quicker response. Please scan the personal QR code on the right, and the guy is responsible for inviting you to the chat group.

If you can not access the QR image, please access it on gitee.

Contributors

Acknowledge

1. We borrowed a lot of code from ESPnet for transformer based modeling.
2. We borrowed a lot of code from Kaldi for WFST based decoding for LM integration.
3. We referred EESEN for building TLG based graph for LM integration.
4. We referred to OpenTransformer for python batch inference of e2e models.

Citations

@article{zhang2021wenet,
  title={WeNet: Production First and Production Ready End-to-End Speech Recognition Toolkit},
  author={Zhang, Binbin and Wu, Di and Yang, Chao and Chen, Xiaoyu and Peng, Zhendong and Wang, Xiangming and Yao, Zhuoyuan and Wang, Xiong and Yu, Fan and Xie, Lei and others},
  journal={arXiv preprint arXiv:2102.01547},
  year={2021}
}

@article{zhang2020unified,
  title={Unified Streaming and Non-streaming Two-pass End-to-end Model for Speech Recognition},
  author={Zhang, Binbin and Wu, Di and Yao, Zhuoyuan and Wang, Xiong and Yu, Fan and Yang, Chao and Guo, Liyong and Hu, Yaguang and Xie, Lei and Lei, Xin},
  journal={arXiv preprint arXiv:2012.05481},
  year={2020}
}