Common Voice Scripted Speech 26.0 - Irish English

Splits and speakers: 9,528 validated clips total — train 9,031 clips / 193 speakers, dev 255 clips / 20 speakers, test 242 clips / 7 speakers. Split is speaker-disjoint (no client_id appears in more than one split), proportioned ~94.78/2.68/2.54 by clip count via a greedy per-speaker balancing algorithm targeting 95/2.5/2.5 (speakers have uneven clip counts, so exact ratios aren't achievable while keeping speakers disjoint).

Clip duration: 13.01 hours total (46,850 seconds) across 9,528 clips. Per-split: train 12.36h, dev 0.38h, test 0.27h. Per-clip: mean 4.92s, median 4.87s, min 0.82s, max 13.94s, std 1.75s.

Gender distribution: male_masculine 6,159; female_feminine 2,772; blank/unspecified 597.

Age distribution (shipped subset, self-declared): thirties 3,015; twenties 2,162; fifties 1,859; fourties 1,558; sixties 374; teens 294; blank/unspecified 235; seventies 31.

Closed-form accent matching (QA): the accents field is pipe-delimited multi-select in the source corpus, but this subset was deliberately filtered to the closed-form (exact-match) rule — 100% of shipped clips have accents == exactly "Irish English", no co-occurring tags.

Open-form vs. closed-form comparison (at execution time): open-form (accents contains "Irish English") = 9,725 clips / 238 speakers; closed-form (accents == exactly "Irish English") = 9,528 clips / 220 speakers / 13.01h. Closed-form drops 197 clips (2.03%).

Disambiguation from Northern Irish: Common Voice carries two distinct predefined accent tags in this region — Irish English (Republic of Ireland, 9,528 clips closed-form) and Northern Irish (Northern Ireland, part of the UK, 10,546 clips closed-form). These are not variants of one accent. This subset's locale is en-IE with only Irish English in scope. Northern Irish population is already represented in the British English release.

Full-corpus accent x gender and age x gender cross-tabs are in stats.md.

Derivation methodology: derived from the Mozilla Common Voice Scripted Speech 26.0 English release (cv-corpus-26.0-2026-06-12, locale en). Filter: validated rows only (present in the source validated.tsv), whose self-declared accents field is exactly "Irish English" (closed-form/exact match, no co-occurring tags, distinct from the separate "Northern Irish" tag). No gender or age filter applied. Speaker-disjoint train/dev/test split via a greedy per-speaker assignment balancing toward 95/2.5/2.5 targets. Only the referenced MP3 clips were extracted from the ~2.58M-clip, ~89GB source archive (not the full archive) via a single sequential streaming pass over the source tar.gz.