Speech data by Nigerian language.
Five languages, each with its own spelling, tone and accent questions. Pick one to see how we record and transcribe it.
Free 10-hour sample first. A person replies within one working day.
Three questions to settle before you order.
Read prompts, conversation, or both?
Read prompts give clean, aligned pairs for ASR and TTS. Natural conversation gives the speed, overlap and code-switching real users bring. Most ASR orders mix the two; TTS is read speech from a few voices.
How should it be written?
Yorùbá, Igbo and Hausa carry tone and special letters that everyday text often drops, and Pidgin has no single spelling. We agree a transcription guide with you before anyone records.
Which speakers?
Set a quota by region, age band and gender. Every speaker is ID-checked, so one voice is one person, and has a stable pseudonymous ID for clean train and test splits.
How every language is recorded.
- Audio
- WAV 48 kHz, 16-bit, mono per speaker (one track each in two-person sessions)
- Tasks
- Read prompts (your list or ours), natural two-person conversation, scripted service dialogues
- Transcripts
- UTF-8, one per clip, speaker turns and non-speech events marked; second-pass checks on every batch
- Metadata
- Language, age band, gender, region, device, consent ID and consent version per clip
- Consent
- Recorded in the speaker’s own language; voice synthesis (TTS) named explicitly when it applies
- Delivery
- Weekly batches over signed links, with a manifest and a QA report
One ID-checked person behind every voice.
ID-checked recorders
BVN or NIN plus a live selfie matched to the ID, and a bank account in the same name, before any paid task.
Live capture only
A spoken challenge code, motion sensors and GPS show each clip was filmed live, at work. No camera-roll uploads.
Blurred and reviewed
Bystander faces and number plates are blurred; a trained reviewer approves or cuts every minute before delivery.
Buyers usually ask.
Which Nigerian languages can you record?
Nigerian Pidgin, Yorùbá, Igbo, Hausa and Nigerian-accented English today. Other Nigerian languages can be scoped per order.
Can one order cover several languages?
Yes. Most speech orders mix languages, with a speaker quota per language agreed up front.
How do I start?
Email [email protected] or use the request form. We record a free sample of about 10 hours to your spec first.
Tell us what you need. We send a free sample first.
Email [email protected] with the data type, hours, languages or trades, labels and format. Pricing is quoted per approved hour after scoping.