What this means for learners
Persian and Lak share 22 sounds — roughly 32% of Lak's inventory overlaps with Persian. Shared sounds are ones a speaker already knows from their native language and will generally produce and perceive accurately without explicit training.
The 47 sounds found only in Lak represent the greatest pronunciation challenge for Persian 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, Persian has 8 sounds not used in Lak. Native Lak speakers learning Persian 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.