Common Voice Scripted Speech 24.0 - Swahili

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License:

CC0-1.0

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Steward:

Common Voice

Task: ASR

Release Date: 12/5/2025

Format: MP3

Size: 21.39 GB


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Description

A collection of scripted spoken phrases in Swahili.

Considerations

Forbidden Usage

It is forbidden to attempt to determine the identity of speakers in the common Voice datasets. It is forbidden to re-host or re-share this 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

Kiswahili — Swahili (sw)

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 24.0 of the the Mozilla Common Voice Scripted Speech dataset for Swahili (sw). The dataset contains 729006 clips representing 1093.03 hours of recorded speech (402.2 hours validated) from 1497 speakers.

Language

Variants

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.

GenderPercentage
Undefined29.0%
Male Masculine34.0%
Female Feminine37.0%

Age

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

Age BandPercentage
Undefined30.0%
Twenties50.0%
Thirties11.0%
Teens1.0%
Fourties3.0%
Fifties4.0%
Sixties1.0%

Data splits for modelling

The official data splits for modelling this language are as follows. Of the validated clips, 26.57% are included in the splits.

SplitCount
Train46618
Test12262
Dev12258

Text corpus

The text corpus contains 140483 sentences, of which 134725 are validated, 5758 are invalidated and 1902 are reported.

Writing system

Symbol table

Sample

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

kumtukuza na kumsifu Mwenyezi Mungu kwa sifa zake njema ambazo
kumshinikiza naibu rais William Ruto kuhakikisha huduma
Kazi hii inaangazia zaidi mofosintaksia na kwamba haitajishughulisha sana na maana
apewe mawaidha ya kuishi katika ndoa alipotangamana na wenzake
Waliwasili Dubai siku iliyofuata saa sita adhuhuri

Sources

Text domains

DomainCount
Undefined729006

Processing

Recommended post-processing

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

Get involved!

Community links

Discussions

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Acknowledgements

Datasheet authors

Citation guidelines

Funding

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