Only in IRANXE 29
What this means for learners
IRANXE and Dafla share 10 sounds — roughly 26% of Dafla's inventory overlaps with IRANXE. Shared sounds are ones a speaker already knows from their native language and will generally produce and perceive accurately without explicit training.
The 17 sounds found only in Dafla represent the greatest pronunciation challenge for IRANXE speakers. The adult brain tends to map unfamiliar sounds onto the closest native equivalent — a process that produces the characteristic "accent" of a second-language speaker. Learning to hear and produce these sounds as distinct requires focused ear training, not just repetition.
Conversely, IRANXE has 29 sounds not used in Dafla. Native Dafla speakers learning IRANXE will face the mirror-image challenge with these sounds.
Phoneme inventories from PHOIBLE. Data reflects one documented inventory per language; some variation exists across dialects and sources.