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---
tags:
- espnet
- audio
- automatic-speech-recognition
- speech-translation
language: multilingual
datasets:
- owsm_v3.1
license: cc-by-4.0
---
## OWSM: Open Whisper-style Speech Model
OWSM aims to develop fully open speech foundation models using publicly available data and open-source toolkits, including [ESPnet](https://github.com/espnet/espnet).
Inference examples can be found on our [project page](https://www.wavlab.org/activities/2024/owsm/).
Our demo is available [here](https://huggingface.co/spaces/pyf98/OWSM_v3_demo).
**[OWSM v3.1](https://arxiv.org/abs/2401.16658) is an improved version of OWSM v3. It significantly outperforms OWSM v3 in almost all evaluation benchmarks.**
We do not include any new training data. Instead, we utilize a state-of-the-art speech encoder, [E-Branchformer](https://arxiv.org/abs/2210.00077).
The model in this repo has 1.02B parameters in total and is trained on 180k hours of public speech data.
Specifically, it supports the following speech-to-text tasks:
- Speech recognition
- Any-to-any-language speech translation
- Utterance-level alignment
- Long-form transcription
- Language identification
### OWSM series
#### Encoder-decoder OWSM
| Name | Size | Hugging Face Repo |
| :--- | ---: | :---------------- |
| OWSM v3.1 base | 101M | https://huggingface.co/espnet/owsm_v3.1_ebf_base |
| OWSM v3.1 small | 367M | https://huggingface.co/espnet/owsm_v3.1_ebf_small |
| OWSM v3.1 medium | 1.02B | https://huggingface.co/espnet/owsm_v3.1_ebf |
| OWSM v3.2 small | 367M | https://huggingface.co/espnet/owsm_v3.2 |
| OWSM v4 base | 102M | https://huggingface.co/espnet/owsm_v4_base_102M |
| OWSM v4 small | 370M | https://huggingface.co/espnet/owsm_v4_small_370M |
| OWSM v4 medium | 1.02B | https://huggingface.co/espnet/owsm_v4_medium_1B |
#### CTC-based OWSM
| Name | Size | Hugging Face Repo |
| :--- | ---: | :---------------- |
| OWSM-CTC v3.1 medium | 1.01B | https://huggingface.co/espnet/owsm_ctc_v3.1_1B |
| OWSM-CTC v3.2 medium | 1.01B | https://huggingface.co/espnet/owsm_ctc_v3.2_ft_1B |
| OWSM-CTC v4 medium | 1.01B | https://huggingface.co/espnet/owsm_ctc_v4_1B |
### Citations
#### OWSM v4
```BibTex
@inproceedings{owsm-v4,
title={{OWSM} v4: Improving Open Whisper-Style Speech Models via Data Scaling and Cleaning},
author={Yifan Peng and Shakeel Muhammad and Yui Sudo and William Chen and Jinchuan Tian and Chyi-Jiunn Lin and Shinji Watanabe},
booktitle={Proceedings of the Annual Conference of the International Speech Communication Association (INTERSPEECH) (accepted)},
year={2025},
}
```
#### OWSM-CTC
```BibTex
@inproceedings{owsm-ctc,
title = "{OWSM}-{CTC}: An Open Encoder-Only Speech Foundation Model for Speech Recognition, Translation, and Language Identification",
author = "Peng, Yifan and
Sudo, Yui and
Shakeel, Muhammad and
Watanabe, Shinji",
booktitle = "Proceedings of the Annual Meeting of the Association for Computational Linguistics (ACL)",
year = "2024",
month= {8},
url = "https://aclanthology.org/2024.acl-long.549",
}
```
#### OWSM v3.1 and v3.2
```BibTex
@inproceedings{owsm-v32,
title={On the Effects of Heterogeneous Data Sources on Speech-to-Text Foundation Models},
author={Jinchuan Tian and Yifan Peng and William Chen and Kwanghee Choi and Karen Livescu and Shinji Watanabe},
booktitle={Proceedings of the Annual Conference of the International Speech Communication Association (INTERSPEECH)},
year={2024},
month={9},
pdf="https://arxiv.org/pdf/2406.09282"
}
@inproceedings{owsm-v31,
title={{OWSM v3.1: Better and Faster Open Whisper-Style Speech Models based on E-Branchformer}},
author={Yifan Peng and Jinchuan Tian and William Chen and Siddhant Arora and Brian Yan and Yui Sudo and Muhammad Shakeel and Kwanghee Choi and Jiatong Shi and Xuankai Chang and Jee-weon Jung and Shinji Watanabe},
booktitle={Proceedings of the Annual Conference of the International Speech Communication Association (INTERSPEECH)},
year={2024},
month={9},
pdf="https://arxiv.org/pdf/2401.16658",
}
```
#### Initial OWSM (v1, v2, v3)
```BibTex
@inproceedings{owsm,
title={Reproducing Whisper-Style Training Using An Open-Source Toolkit And Publicly Available Data},
author={Yifan Peng and Jinchuan Tian and Brian Yan and Dan Berrebbi and Xuankai Chang and Xinjian Li and Jiatong Shi and Siddhant Arora and William Chen and Roshan Sharma and Wangyou Zhang and Yui Sudo and Muhammad Shakeel and Jee-weon Jung and Soumi Maiti and Shinji Watanabe},
booktitle={Proceedings of the IEEE Automatic Speech Recognition and Understanding Workshop (ASRU)},
year={2023},
month={12},
pdf="https://arxiv.org/pdf/2309.13876",
}
```
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