---
license: apache-2.0
---


<h1 align="center">
  WenetSpeech-Chuan: A Large-Scale Sichuanese Corpus With Rich Annotation For Dialectal Speech Processing
</h1>

<p align="center">
  Yuhang Dai<sup>1</sup><sup>,*</sup>, Ziyu Zhang<sup>1</sup><sup>,*</sup>, Shuai Wang<sup>4</sup><sup>,5</sup>, 
  Longhao Li<sup>1</sup>, Zhao Guo<sup>1</sup>, Tianlun Zuo<sup>1</sup>, 
  Shuiyuan Wang<sup>1</sup>, Hongfei Xue<sup>1</sup>, Chengyou Wang<sup>1</sup>, 
  Qing Wang<sup>3</sup>, Xin Xu<sup>2</sup>, Hui Bu<sup>2</sup>, Jie Li<sup>3</sup>, 
  Jian Kang<sup>3</sup>, Binbin Zhang<sup>5</sup>, Lei Xie<sup>1</sup><sup>,╀</sup>
</p>
<p align="center">
  <sup>1</sup> Audio, Speech and Language Processing Group (ASLP@NPU), Northwestern Polytechnical University <br>
  <sup>2</sup> Beijing AISHELL Technology Co., Ltd. <br>
  <sup>3</sup> Institute of Artificial Intelligence (TeleAI), China Telecom <br>
  <sup>4</sup> School of Intelligence Science and Technology, Nanjing University <br>
  <sup>5</sup> WeNet Open Source Community <br>
</p>

<p align="center">
📑 <a href="https://arxiv.org/abs/2509.18004">Paper</a> &nbsp&nbsp | &nbsp&nbsp 
🐙 <a href="https://github.com/ASLP-lab/WenetSpeech-Chuan">GitHub</a> &nbsp&nbsp | &nbsp&nbsp 
🤗 <a href="https://huggingface.co/collections/ASLP-lab/wenetspeech-chuan-68bade9d02bcb1faece65bda">HuggingFace</a>
<br>
🎤 <a href="https://aslp-lab.github.io/WenetSpeech-Chuan/">Demo Page</a> &nbsp&nbsp | &nbsp&nbsp 
💬 <a href="https://github.com/ASLP-lab/WenetSpeech-Chuan?tab=readme-ov-file#contact">Contact Us</a>
</p>


<div align="center">
  <img width="800px" src="https://github.com/ASLP-lab/WenetSpeech-Chuan/blob/main/src/logo/WenetSpeech-Chuan-Logo.png?raw=true" />
</div>

## Dataset
### WenetSpeech-Chuan Overview

* Contains 10,000 hours of large-scale Chuan-Yu dialect speech corpus with rich annotations, the largest open-source resource for Chuan-Yu dialect speech research.</li>
* Stores metadata in a single JSON file, including audio path, duration, text confidence, speaker identity, SNR, DNSMOS, age, gender, and character-level timestamps. Additional metadata tags may be added in the future.</li>
* Covers ten domains: Short videos, Entertainment, Live streams, Documentary, Audiobook, Drama, Interview, News and others.</li>

<div align="center">
  <img src="https://github.com/ASLP-lab/WenetSpeech-Chuan/blob/main/src/figs/domain.png?raw=true" width="300" style="display:inline-block; margin-right:10px;" />
  <img src="https://github.com/ASLP-lab/WenetSpeech-Chuan/blob/main/src/figs/quality_distribution.jpg?raw=true" width="300" style="display:inline-block;" />
</div>





### Metadata Format
We store all audio metadata in a standardized JSON format, where the core fields include `utt_id` (unique identifier for each audio segment), `rover_result` (ROVER result of three ASR transcriptions), `confidence` (confidence score of text transcription), `jyutping_confidence` (confidence score of Cantonese pinyin transcriptions), and `duration` (audio duration); speaker attributes include `speaker_id`, `gender`, and `age`; audio quality assessment metrics include `sample_rate`, `DNSMOS`, and `SNR`; timestamp information includes `timestamp` (precisely recording segment boundaries with `start` and `end`); and extended metadata under the `meta_info` field includes `program` (program name), `region` (geographical information), `link` (original content link), and `domain` (domain classification).


#### 📂 Content Tree
```

WenetSpeech-Chuan
├── metadata.jsonl
├── .gitattributes
└── README.md

<!-- WenetSpeech-Chuan
├── metadata.jsonl
│
├── audio_labels/
│   ├── wav_utt_id.jsonl
│   ├── wav_utt_id.jsonl
│   ├── ...
│   └── wav_utt_id.jsonl
│
├── .gitattributes
└── README.md -->
```
#### Data sample：

###### metadata.jsonl

{<br>
  "utt": 音频id, <br>
  "filename"：音频文件名(type: str), <br>
  "text": 转录抄本(type: str), <br>
  "domain": 参考领域信息(type: list[str]), <br>
  "gender": 说话人性别(type: str), <br>
  "age": 说话人年龄标签 (type: int范围, eg: 中年（36~59）), <br>
  "wvmos": 音频质量分数(type: float), <br>
  "confidence": 转录文本置信度（0-1）(type: str) <br>
} <br>

**example:** 
<br>
{<br>
    "utt": "013165482320_dwM1G_56_5920", <br>
    "filename": "013165482320_dwM1G_56_5920.wav", <br>
    "text": "道具组安排上了来吧每行都对啊李老师", <br>
    "domain": ["短视频"], <br>
    "gender": male, <br>
    "age": null, <br>
    "emotion": angry, <br>
    "wvmos": 0.9570670127868652, <br>
    "confidence": 0.9706 <br>
} <br>



<!-- ###### audio_labels/wav_utt_id.jsonl：
{ <br>
  "wav_utt_id_timestamp": 以 转化为wav后的长音频id_时间戳信息 作为切分后的短音频id (type: str), <br>
  "wav_utt_id_timestamp_path": 短音频数据路径 (type: str), <br>
  "audio_clip_id": 该段短音频在长音频中的切分顺序编号, <br>
  "timestamp": 时间戳信息， <br>
  "wvmos_score": wvmos分数，衡量音频片段质量 (type: float), <br>
  "text": 对应时间戳的音频片段的抄本 (type: str), <br>
  "text_punc": 带标点的抄本 (type: str), <br>
  "spk_num": 音频片段说话人个数，single/multi (type: str) <br>
  "confidence": 抄本置信度 (type: float), <br>
  "emotion": 说话人情感标签 (type: str，eg: 愤怒), <br>
  "age": 说话人年龄标签 (type: int范围, eg: 中年（36~59）), <br>
  "gender": 说话人性别标签  (type: str，eg: 男/女), <br>
} <br>
 -->
<!-- #### Data sample（EN）：

###### metadata.jsonl
{ <br>
  "utt_id": Original long audio ID,  <br>
  "wav_utt_id": Converted long audio ID after transforming to WAV format,  <br>
  "source_audio_path": Path to the original long audio file,  <br>
  "audio_labels": Path to the label file of short audio segments cut from the converted long audio,  <br>
  "url": Download link for the original long audio <br>
} <br>


###### audio_labels/wav_utt_id.jsonl：

{ <br>
  "wav_utt_id_timestamp": Short audio segment ID, composed of the converted long audio ID + timestamp information (type: str), <br>
  "wav_utt_id_timestamp_path": Path to the short audio data (type: str), <br>
  "audio_clip_id": Sequence number of this short segment within the long audio, <br>
  "timestamp": Timestamp information, <br>
  "wvmos_score": WVMOS score, measuring the quality of the audio segment (type: float), <br>
  "text": Transcript of the audio segment corresponding to the timestamp (type: str), <br>
  "text_punc": Transcript with punctuation (type: str), <br>
  "spk_num": Number of speakers in the audio segment, single/multi (type: str), <br>
  "confidence": Confidence score of the transcript (type: float), <br>
  "emotion": Speaker’s emotion label (type: str, e.g., anger), <br>
  "age": Speaker’s age label (type: int range, e.g., middle-aged (36–59)), <br>
  "gender": Speaker’s gender label (type: str, e.g., male/female) <br>
} <br>
 -->
### WenetSpeech Usage
You can obtain the original video source through the `link` field in the metadata file (`metadata.json`). Segment the audio according to the `timestamps` field to extract the corresponding record. For pre-processed audio data, please contact us using the information provided below. 

## Contact
If you have any questions or would like to collaborate, feel free to reach out to our research team via email: yhdai@mail.nwpu.edu.cn or ziyu_zhang@mail.nwpu.edu.cn.

You’re also welcome to join our WeChat group for technical discussions, updates, and — as mentioned above — access to pre-processed audio data.

<p align="center">
<img src="https://github.com/ASLP-lab/WenetSpeech-Chuan/raw/main/src/figs/wechat_2.png" width="300" alt="WeChat Group QR Code"/>
<em>Scan to join our WeChat discussion group</em>
</p>

<p align="center">
<img src="https://github.com/ASLP-lab/WenetSpeech-Yue/raw/main/figs/npu@aslp.jpeg" width="300" alt="Official Account QR Code"/>
</p>