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License:
CC0-1.0
Steward:
Common VoiceDataset ID:
cmflnn481xe6c6852kiwd3s5f
Release Date: 9/15/2025
Format: MP3
Size: 3.87 GB
A collection of scripted spoken phrases in Welsh.
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
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.
cy)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 Welsh (cy). The dataset contains 115951 clips representing 159 hours of recorded
speech (124 hours validated) from 1923 speakers.
The dataset includes the following distribution of age and gender.
Self-declared gender information, percentage refers to the number of clips annotated with this gender.
| Gender | Pertentage |
|---|---|
| Undefined | 43.0% |
| Male Masculine | 33.0% |
| Female Feminine | 25.0% |
Self-declared age information, percentage refers to the number of clips annotated with this age band.
| Age Band | Percentage |
|---|---|
| Undefined | 43.0% |
| Twenties | 13.0% |
| Thirties | 9.0% |
| Teens | 2.0% |
| Fourties | 16.0% |
| Fifties | 9.0% |
| Sixties | 7.0% |
| Seventies | 1.0% |
The official data splits for modelling this language are as follows. Of the validated clips, 20.74% are included in the splits.
| Split | Count |
|---|---|
| Train | 8024 |
| Test | 5409 |
| Dev | 5403 |
The text corpus contains 118058 sentences, of which 118044 are validated, 14 are invalidated and 176 are reported.
There follows a randomly selected sample of five sentences from the corpus.
Fe'i nodweddir gan ordewdra, clefyd y galon, clefyd siwgr, gorbwysedd a chyfnod oes byrrach.
Mae padlo a chaiacio hefyd yn boblogaidd ar y llyn hwn.
Mae’r pwllyn wedi ei leoli mewn gwirionedd yn olion crater.
Mae hwn yn cynnwys manganîs, ffosfforws, nitrad, asid lactig, a decstros!
Ond mae cwmnïau siartredig yn mynd yn ôl i'r cyfnod canoloesol.
| Domain | Count |
|---|---|
| Undefined | 115950 |
| General | 100.0% |
Each row of a tsv file represents a single audio clip, and contains the following information:
client_id - hashed UUID of a given userpath - relative path of the audio filetext - supposed transcription of the audioup_votes - number of people who said audio matches the textdown_votes - number of people who said audio does not match textage - age of the speaker1gender - gender of the speaker1accent - accent of the speaker1segment - if sentence belongs to a custom dataset segment, it will be listed hereThis 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.
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