Language-Codec: Reducing the Gaps Between Discrete Codec Representation and Speech Language Models

🔥 News

• 2024.11: We release WavChat (A survey of spoken dialogue models about 60 pages) on arxiv.
• 2024.08: 🎉🎉 We have open-sourced a SOTA Codec model WavTokenizer, which can reconstruct speech, music, and audio using only 40 tokens one-second!
• 2024.04: We update Languagecodec and release a more powerful checkpoint.
• 2022.02: We release Languagecodec on arxiv.

Installation

To use Language-Codec, install it using:

conda create -n xxx python=3.8
conda activate xxx
pip install -r requirements.txt

Infer

Part1: Reconstruct audio from raw wav

from languagecodec_encoder.utils import convert_audio
import torchaudio
import torch
from languagecodec_decoder.pretrained import Vocos

device=torch.device('cpu')

config_path = "xxx/languagecodec/configs/languagecodec.yaml"
model_path = "xxx/xxx.ckpt"
audio_outpath = "xxx"
languagecodec = Vocos.from_pretrained0802(config_path, model_path)
languagecodec = languagecodec.to(device)

wav, sr = torchaudio.load(audio_path)
wav = convert_audio(wav, sr, 24000, 1) 
bandwidth_id = torch.tensor([0])
wav=wav.to(device)
features,discrete_code= languagecodec.encode_infer(wav, bandwidth_id=bandwidth_id)
audio_out = languagecodec.decode(features, bandwidth_id=bandwidth_id) 
torchaudio.save(audio_outpath, audio_out, sample_rate=24000, encoding='PCM_S', bits_per_sample=16)

Part2: Generating discrete codecs

from languagecodec_encoder.utils import convert_audio
import torchaudio
import torch
from languagecodec_decoder.pretrained import Vocos

device=torch.device('cpu')

config_path = "xxx/languagecodec/configs/languagecodec.yaml"
model_path = "xxx/xxx.ckpt"
languagecodec = Vocos.from_pretrained0802(config_path, model_path)
languagecodec = languagecodec.to(device)

wav, sr = torchaudio.load(audio_path)
wav = convert_audio(wav, sr, 24000, 1) 
bandwidth_id = torch.tensor([0])
wav=wav.to(device)
_,discrete_code= languagecodec.encode_infer(wav, bandwidth_id=bandwidth_id)
print(discrete_code)

Part3: Audio reconstruction through codecs

# audio_tokens [n_q,1,t]/[n_q,t]
features = languagecodec.codes_to_features(audio_tokens)
bandwidth_id = torch.tensor([0])  
audio_out = languagecodec.decode(features, bandwidth_id=bandwidth_id)

Pre-trained models

Training

Step1: Prepare train dataset

# Process the data into a form similar to xxx/languagecodec/data/libritts_testother.txt

Step2: Modifying configuration files

# xxx/languagecodec/configs/languagecodec_mm.yaml
# Modify the values of parameters such as batch_size, filelist_path, save_dir, device

Step3: Start training process

Refer to Pytorch Lightning documentation for details about customizing the training pipeline.

cd xxx/languagecodec
python train.py fit --config xxx/languagecodec/configs/languagecodec_mm.yaml

Citation

If this code contributes to your research, please cite our work:

@misc{ji2024languagecodec,
      title={Language-Codec: Reducing the Gaps Between Discrete Codec Representation and Speech Language Models}, 
      author={Shengpeng Ji and Minghui Fang and Ziyue Jiang and Rongjie Huang and Jialung Zuo and Shulei Wang and Zhou Zhao},
      year={2024},
      eprint={2402.12208},
      archivePrefix={arXiv},
      primaryClass={eess.AS}
}

License

The code in this repository is released under the MIT license as found in the LICENSE file.