Shared sounds 39
What this means for learners
Bamana and Akan share 39 sounds — roughly 65% of Akan's inventory overlaps with Bamana. Shared sounds are ones a speaker already knows from their native language and will generally produce and perceive accurately without explicit training.
The 21 sounds found only in Akan represent the greatest pronunciation challenge for Bamana 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, Bamana has 19 sounds not used in Akan. Native Akan speakers learning Bamana 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.