Google Research·2026-03-07 04:06· 2026-03-07

WAXAL: A large-scale open resource for African language speech technology

AI summary

Google Research released WAXAL, a large open speech dataset initially covering 27 sub-Saharan African languages spoken by more than 100 million people, under CC-BY-4.0.

Selection record

Threshold 60Official, first-handFirst 62Second 62

AdmittedSum of both 124 ≥ twice the threshold 120

Source tier: Official, first-hand; this tier's threshold is 60
Pre-filter: passed：非洲语言ASR/TTS语音数据集，AI语音技术
Why it was chosen: The 27-language dataset released with African universities and community organisations explains collection methods and open licensing for low-resource language speech data.

A model scores each item twice, independently, against one written standard, out of 100. An item is admitted only when the two scores add up to twice the threshold. The threshold is set per source tier.

Source: Google Research · research.google

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