Loading datasets...
Release Date: 9/17/2026
Format: MP3
Size: 380.43 MB
A collection of read speech recordings in Igbo (Ásụ̀sụ́ Ìgbò).
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.
ig)This datasheet is for cv-corpus-27.0-2026-09-11 of the Mozilla Common Voice Scripted Speech dataset for Igbo [Ásụ̀sụ́ Ìgbò - ig]. The dataset contains 12633 clips representing 19.05 hours of recorded speech (2.85 hours validated) from 188 speakers, recorded from a text corpus of 18,393 sentences.
Igbo (Ásụ̀sụ́ Ìgbò) is a Niger-Congo language spoken by over 30 million people, primarily in southeastern Nigeria. It is a tonal language with many dialects. Standard Igbo (Igbo izugbe) serves as the literary form.
Igbo has numerous dialects including Onitsha, Owerri, Ngwa, Afikpo, Nsukka, and others. The Common Voice dataset mainly uses Standard Igbo orthography, but recordings reflect various speaker accents and dialects from Nigeria.
| Code | Accent | Clips | Speakers |
|---|---|---|---|
| - | 1,107 (8.8%) | 11 (5.9%) |
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 | 801 (6.3%) | 11 (5.9%) |
| female_feminine | Female, feminine | 7,043 (55.8%) | 53 (28.2%) |
| transgender | Transgender | - | - |
| non-binary | Non-binary | - | - |
| do_not_wish_to_say | Prefer not to say | - | - |
| - | Unspecified | 4,789 (37.9%) | 153 (81.4%) |
Gender declared: 7,844 of 12,633 clips (62.1%), 35 of 188 speakers (18.6%)
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 | 1,295 (10.3%) | 8 (4.3%) |
| twenties | Twenties | 5,011 (39.7%) | 62 (33.0%) |
| thirties | Thirties | 2,574 (20.4%) | 9 (4.8%) |
| fourties | Fourties | 120 (0.9%) | 2 (1.1%) |
| fifties | Fifties | 5 (0.0%) | 1 (0.5%) |
| sixties | Sixties | 135 (1.1%) | 1 (0.5%) |
| seventies | Seventies | - | - |
| eighties | Eighties | 25 (0.2%) | 1 (0.5%) |
| nineties | Nineties | - | - |
| - | Unspecified | 3,468 (27.5%) | 134 (71.3%) |
Age declared: 9,165 of 12,633 clips (72.5%), 54 of 188 speakers (28.7%)
Clip buckets
| Bucket | Clips |
|---|---|
| Validated | 1,895 (15.0%) |
| Invalidated | 677 (5.4%) |
| Other | 10,061 (79.6%) |
Training splits
| Split | Clips |
|---|---|
| Train | 674 (35.6%) |
| Dev | 593 (31.3%) |
| Test | 618 (32.6%) |
Training split coverage: 1,885 of 1,895 validated clips (99.5%)
The dataset contains 1895 validated, 677 invalidated, and 10061 unresolved clips. The average clip duration is 5.43 seconds.
Validated sentences: 15,392
| Category | Count |
|---|---|
| Unvalidated sentences | 3,001 |
| Pending sentences | 2,991 |
| Rejected sentences | 10 |
| Reported sentences | 47 |
The corpus contains 18,393 sentences: 15,392 validated and 3,001 unvalidated (2,991 pending review, 10 rejected), with 47 reported for review.
Latin script using the Onwu orthography (standard Igbo alphabet). It includes additional letters/digraphs such as: a b ch d e f g gb gh gw h i j k kp kw l m n nw ny ṅ o p r s sh t u v w y z.
a b c ch d e f g gb gh gw h i j k kp kw l m n nw ny ṅ o p r s sh t u v w y z
There follows a randomly selected sample of five sentences from the corpus.
Community-contributed sentences via the Common Voice platform. Wikipedia dumps and other public domain texts. Volunteer contributions from Igbo speakers and past contribute-a-thons.
| Source | Sentences |
|---|---|
| sentence-collector | 12,732 (82.7%) |
| wiki | 1,722 (11.2%) |
| IgboRadio | 931 (6.0%) |
| Other | 7 (0.0%) |
| Code | Domain | Clips | Speakers |
|---|---|---|---|
| general | General | 1 (0.0%) | 1 (0.5%) |
| agriculture_food | Agriculture and Food | 1 (0.0%) | 1 (0.5%) |
| automotive_transport | Automotive and Transport | - | - |
| finance | Finance | - | - |
| service_retail | Service and Retail | - | - |
| healthcare | Healthcare | - | - |
| history_law_government | History, Law and Government | 1 (0.0%) | 1 (0.5%) |
| media_entertainment | Media and Entertainment | 2 (0.0%) | 2 (1.1%) |
| nature_environment | Nature and Environment | - | - |
| news_current_affairs | News and Current Affairs | - | - |
| technology_robotics | Technology and Robotics | - | - |
| language_fundamentals | Language Fundamentals | 2 (0.0%) | 2 (1.1%) |
Sentences were collected through the Common Voice web platform. Basic filtering for length, profanity, and quality was applied per Mozilla guideline. No major custom processing beyond standard pipeline.
Normalize tone marks if needed -Igbo is tonal but orthography often omits some. Handle dialectal variations carefully. For ASR training, consider diacritic removal in some cases for better performance.
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 filesentence - the sentence to be read aloudsentence_id - unique identifier for the sentencesentence_domain - domain classification(s) of the sentenceup_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 speaker1accents - accents of the speaker1variant - variant of the language1locale - locale code of the languagesegment - if sentence belongs to a custom dataset segment, it will be listed herevalidated_sentences.tsvThe validated_sentences.tsv file contains one row per validated sentence in the text corpus:
sentence_id - unique identifier for the sentencesentence - the sentence textvariant - the variant of the languagesentence_domain - the domain(s) the sentence belongs tosource - the source the sentence was collected fromis_used - whether the sentence is still in circulation for recordingclips_count - number of clips recorded for this sentenceunvalidated_sentences.tsvThe unvalidated_sentences.tsv file contains one row per unvalidated sentence in the text corpus:
sentence_id - unique identifier for the sentencesentence - the sentence textvariant - the variant of the languagesentence_domain - the domain(s) the sentence belongs tosource - the source the sentence was collected fromup_votes - number of upvotes the sentence receiveddown_votes - number of downvotes the sentence receivedstatus - current status of the sentence (pending or rejected)Igbo-specific Discord: https://discord.gg/quZYHjdHY6
Igbo WhatsApp Group: https://chat.whatsapp.com/Cgw9yD2Xt1XFm6RiJe1bwb
Igbo Contribute-a-thon events: Search ""Igbo Common Voice"" on Discourse
Eze Rita Chidera [email protected] (Igbo Community Facilitator)
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