Common Voice Scripted Speech 23.0 - Chinese (China)

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License:

CC0-1.0

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Steward:

Common Voice

Task: ASR

Release Date: 9/15/2025

Format: MP3

Size: 21.26 GB

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Description

A collection of scripted spoken phrases in Chinese (China).

Specifics

Licensing

CC0-1.0

https://creativecommons.org/publicdomain/zero/1.0/legalcode

Considerations

Restrictions/Special Constraints

You agree that you will not re-host or re-share this dataset

Forbidden Usage

You agree not to attempt to determine the identity of speakers in the Common Voice dataset

Processes

Intended Use

This dataset is intended to be used for training and evaluating automatic speech recognition (ASR) models. It may also be used for applications relating to computer-aided language learning (CALL) and language or heritage revitalisation.

Metadata

汉语（中国大陆） — Chinese (China) (zh-CN)

This datasheet has been generated automatically, we would love to include more information, if you would like to help out, get in touch!

This datasheet is for version 23.0 of the the Mozilla Common Voice Scripted Speech dataset for Chinese (China) (zh-CN). The dataset contains 848990 clips representing 1090 hours of recorded speech (238 hours validated) from 7476 speakers.

Demographic information

The dataset includes the following distribution of age and gender.

Gender

Self-declared gender information, percentage refers to the number of clips annotated with this gender.

GenderPertentage
Undefined93.0%
Male Masculine6.0%
Female Feminine1.0%

Age

Self-declared age information, percentage refers to the number of clips annotated with this age band.

Age BandPercentage
Undefined92.0%
Twenties5.0%
Thirties1.0%
Teens1.0%

Data splits for modelling

The official data splits for modelling this language are as follows. Of the validated clips, 26.91% are included in the splits.

SplitCount
Train29474
Test10635
Dev10635

Text corpus

The text corpus contains 59986 sentences, of which 59072 are validated, 914 are invalidated and 1074 are reported.

Sample

There follows a randomly selected sample of five sentences from the corpus.

六
否
四
一
三

Text domains

DomainCount
Undefined847386
Agriculture Food18
Automotive Transport42
Finance24
Service Retail41
General532
Healthcare65
History Law Government203
Language Fundamentals46
Media Entertainment721
Nature Environment19
News Current Affairs55
Technology Robotics100

Fields

Each row of a tsv file represents a single audio clip, and contains the following information:

  • client_id - hashed UUID of a given user

  • path - relative path of the audio file

  • text - supposed transcription of the audio

  • up_votes - number of people who said audio matches the text

  • down_votes - number of people who said audio does not match text

  • age - age of the speaker1

  • gender - gender of the speaker1

  • accent - accent of the speaker1

  • segment - if sentence belongs to a custom dataset segment, it will be listed here

Community links

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Licence

This dataset is released under the Creative Commons Zero (CC-0) licence. By downloading this data you agree to not determine the identity of speakers in the dataset.

Footnotes

  1. For a full list of age, gender, and accent options, see the demograpics spec. These will only be reported if the speaker opted in to provide that information. ↩ ↩2 ↩3