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License:
CC-BY-NC-4.0
Steward:
MDC Curators
Task: MT
Release Date: 5/10/2026
Format: MP3, TSV
Size: 4.50 GB
Share
CoVoST 2 is a large-scale multilingual speech to text translation corpus based on Mozilla Common Voice 4.0. This segment of the corpus contains the Catalan audio (157 hours) and the translations in English.
Licensing
Creative Commons Attribution Non Commercial 4.0 International (CC-BY-NC-4.0)
https://spdx.org/licenses/CC-BY-NC-4.0.htmlRestrictions/Special Constraints
Research and non-commercial use only.
Forbidden Usage
You agree not to attempt to determine the identity of speakers in this dataset. You agree not to train models for public distribution on this dataset. Any attempt to clone the voice or train models that imitate the speakers in this dataset is forbidden.
Ethical Review
This dataset contains data from speakers who have asked to be removed from the Mozilla Common Voice dataset, we expect that you will treat it with care. We expect it to be used only for research and non-commercial purposes only.
Intended Use
Replication experiments involving the CoVoST 2 datasets.
This dataset contains 121317 audio clips totalling 157:50:32 of audio in Catalan with the corresponding translations in English.
End-to-end speech-to-text translation (ST) has recently witnessed an increased interest given its system simplicity, lower inference latency and less compounding errors compared to cascaded ST (i.e. speech recognition + machine translation). End-to-end ST model training, however, is often hampered by the lack of parallel data. Thus, we created CoVoST, a large-scale multilingual ST corpus based on Common Voice, to foster ST research with the largest ever open dataset. Its latest version covers translations from English into 15 languages---Arabic, Catalan, Welsh, German, Estonian, Persian, Indonesian, Japanese, Latvian, Mongolian, Slovenian, Swedish, Tamil, Turkish, Chinese---and from 21 languages into English, including the 15 target languages as well as Spanish, French, Italian, Dutch, Portuguese, Russian. It has total 2,880 hours of speech and is diversified with 78K speakers.
path: Filename of the audio file
sentence: The sentence in the source language
translation: The sentence in the target language
client_id: The ID of the speaker of the source language, used for maintaining hygiene in the splits.
path sentence translation client_id
common_voice_ca_19898602.mp3 "Els caus consten típicament d'un passadís principal que es divideix en moltes branques." Dens are normally made up of a main corridor that is divided into a lot of branches. 6c8bda7a6d2dfbb04c3fd9dea23d48ff8fa18d81c988d3fcaa2614af06b986be9d0f26593815aa6ef2ae955084bfc48b40201c9a83df6dd22d8c87eccc9694d3
common_voice_ca_19898603.mp3 "S'empra regularment en macedònic per evitar l'ambigüitat que podria donar-se en alguns casos." It is usually used in Macedonian in order to avoid ambiguity in some cases. 6c8bda7a6d2dfbb04c3fd9dea23d48ff8fa18d81c988d3fcaa2614af06b986be9d0f26593815aa6ef2ae955084bfc48b40201c9a83df6dd22d8c87eccc9694d3
common_voice_ca_19898604.mp3 Les abelles atacades són més propenses a infeccions. Attacked bees are more prone to infections. 6c8bda7a6d2dfbb04c3fd9dea23d48ff8fa18d81c988d3fcaa2614af06b986be9d0f26593815aa6ef2ae955084bfc48b40201c9a83df6dd22d8c87eccc9694d3
common_voice_ca_19898605.mp3 És de dimensions molt petites. It is very small. 6c8bda7a6d2dfbb04c3fd9dea23d48ff8fa18d81c988d3fcaa2614af06b986be9d0f26593815aa6ef2ae955084bfc48b40201c9a83df6dd22d8c87eccc9694d3
| # clips | |
|---|---|
| Train | 95855 |
| Dev | 12731 |
| Test | 12731 |
If you use this dataset in your work please cite
@misc{wang2020covost,
title={CoVoST 2: A Massively Multilingual Speech-to-Text Translation Corpus},
author={Changhan Wang and Anne Wu and Juan Pino},
year={2020},
eprint={2007.10310},
archivePrefix={arXiv},
primaryClass={cs.CL}
}