JACALTEC vs Chasta Costa
Sound inventory comparison
What this means for learners
JACALTEC and Chasta Costa share 20 sounds — roughly 45% of Chasta Costa's inventory overlaps with JACALTEC. Shared sounds are ones a speaker already knows from their native language and will generally produce and perceive accurately without explicit training.
The 24 sounds found only in Chasta Costa represent the greatest pronunciation challenge for JACALTEC 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, JACALTEC has 12 sounds not used in Chasta Costa. Native Chasta Costa speakers learning JACALTEC 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.