Datasets:

LokaalHub
/

cy-asr-cv

license: cc0-1.0
language:
  - cy
task_categories:
  - automatic-speech-recognition
pretty_name: Welsh ASR (Common Voice 22, filtered + rebalanced)
size_categories:
  - 10K<n<100K
tags:
  - cy
  - cy
  - common-voice
  - speech

Welsh ASR (Common Voice 22, filtered + rebalanced)

Welsh (cy) speech for ASR, built from Mozilla Common Voice 22.0 (CC0) via the open fsicoli/common_voice_22_0 mirror. Built to fine-tune streaming ASR models (e.g. nvidia/nemotron-3.5-asr-streaming-0.6b).

Splits

Split	Clips	Hours
train	?	50.1
dev	?	0.8
test	?	2.0

train = the official validated train split + the filtered other bucket + the excess dev/test speakers: Common Voice's official dev/test are balanced for benchmarking and far too large to hold out when fine-tuning a low-resource language, so they are capped (dev ~0.75h, test ~2.0h) by whole speakers and the remainder moved into train. Held-out dev/test stay disjoint from train by both speaker and sentence.

Columns

audio (16 kHz mono), text, lang (cy), client_id (anonymized speaker), split, source (validated | other | moved-validated), quality_score.