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Release Date: 9/17/2026
Format: MP3
Size: 3.39 MB
A collection of read speech recordings in Northern Sotho (Sesotho sa Leboa).
Restrictions/Special Constraints
None provided.
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.
nso)This datasheet is for cv-corpus-27.0-2026-09-11 of the Mozilla Common Voice Scripted Speech dataset for Northern Sotho [Sesotho sa Leboa - nso]. The dataset contains 124 clips representing 0.19 hours of recorded speech (0.02 hours validated) from 2 speakers, recorded from a text corpus of 16,471 sentences.
| Code | Accent | Clips | Speakers |
|---|---|---|---|
| - | 104 (83.9%) | 1 (50.0%) |
The dataset includes the following self-declared age and gender distributions. A coverage summary is shown below each table.
Self-declared gender information. The table shows clip and speaker counts with percentages. Speakers who did not declare a gender are listed as Unspecified. A dash (-) indicates zero.
| Code | Gender | Clips | Speakers |
|---|---|---|---|
| male_masculine | Male, masculine | - | - |
| female_feminine | Female, feminine | - | - |
| transgender | Transgender | - | - |
| non-binary | Non-binary | - | - |
| do_not_wish_to_say | Prefer not to say | - | - |
| - | Unspecified | 124 (100.0%) | 2 (100.0%) |
Gender declared: 0 of 124 clips (0.0%), 0 of 2 speakers (0.0%)
Self-declared age information. The table shows clip and speaker counts with percentages. Speakers who did not declare an age are listed as Unspecified. A dash (-) indicates zero.
| Code | Age | Clips | Speakers |
|---|---|---|---|
| teens | Teens | - | - |
| twenties | Twenties | - | - |
| thirties | Thirties | - | - |
| fourties | Fourties | 94 (75.8%) | 1 (50.0%) |
| fifties | Fifties | - | - |
| sixties | Sixties | - | - |
| seventies | Seventies | - | - |
| eighties | Eighties | - | - |
| nineties | Nineties | - | - |
| - | Unspecified | 30 (24.2%) | 2 (100.0%) |
Age declared: 94 of 124 clips (75.8%), 0 of 2 speakers (0.0%)
Clip buckets
| Bucket | Clips |
|---|---|
| Validated | 16 (12.9%) |
| Invalidated | 1 (0.8%) |
| Other | 107 (86.3%) |
Training splits
| Split | Clips |
|---|---|
| Train | 15 (93.8%) |
| Dev | - |
| Test | 1 (6.3%) |
Training split coverage: 16 of 16 validated clips (100.0%)
The dataset contains 16 validated, 1 invalidated, and 107 unresolved clips. The average clip duration is 5.754 seconds.
Validated sentences: 2,254
| Category | Count |
|---|---|
| Unvalidated sentences | 14,217 |
| Pending sentences | 14,217 |
| Rejected sentences | - |
| Reported sentences | - |
The corpus contains 16,471 sentences: 2,254 validated and 14,217 unvalidated (14,217 pending review, 0 rejected), with 0 reported for review.
There follows a randomly selected sample of five sentences from the corpus.
Bolela ka lefelo leo o dulago go lona.
Go a swana le go direto le dipapadi.
Letlalo la gagwe le dula le hlwekile.
Ngwala leina la puku ye o e ratilego.
Na ke swanetše go hwetša metswako efe?
| Source | Sentences |
|---|---|
| sentence-collector | 2,240 (99.4%) |
| Other | 14 (0.6%) |
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
sentence - the sentence to be read aloud
sentence_id - unique identifier for the sentence
sentence_domain - domain classification(s) of the sentence
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
accents - accents of the speaker1
variant - variant of the language1
locale - locale code of the language
segment - if sentence belongs to a custom dataset segment, it will be listed here
validated_sentences.tsvThe validated_sentences.tsv file contains one row per validated sentence in the text corpus:
sentence_id - unique identifier for the sentence
sentence - the sentence text
variant - the variant of the language
sentence_domain - the domain(s) the sentence belongs to
source - the source the sentence was collected from
is_used - whether the sentence is still in circulation for recording
clips_count - number of clips recorded for this sentence
unvalidated_sentences.tsvThe unvalidated_sentences.tsv file contains one row per unvalidated sentence in the text corpus:
sentence_id - unique identifier for the sentence
sentence - the sentence text
variant - the variant of the language
sentence_domain - the domain(s) the sentence belongs to
source - the source the sentence was collected from
up_votes - number of upvotes the sentence received
down_votes - number of downvotes the sentence received
status - current status of the sentence (pending or rejected)
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 demographics spec. These will only be reported if the speaker opted in to provide that information. ↩ ↩2 ↩3 ↩4