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License:
CC0-1.0
Steward:
Common VoiceDataset ID:
cmj8l8bvu005bnlov9vmtyweq
Release Date: 12/5/2025
Format: MP3
Size: 3.87 GB
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A collection of scripted spoken phrases in Welsh.
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
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 24.0 of the the Mozilla Common Voice Scripted Speech dataset
for Welsh (cy). The dataset contains 116002 clips representing 158.4 hours of recorded
speech (124.07 hours validated) from 1931 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 | Percentage |
|---|---|
| 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 | 116001 |
| 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 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
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.
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