What this means for learners
MABA and Lingala share 19 sounds — roughly 66% of Lingala's inventory overlaps with MABA. Shared sounds are ones a speaker already knows from their native language and will generally produce and perceive accurately without explicit training.
The 3 sounds found only in Lingala represent the greatest pronunciation challenge for MABA 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, MABA has 10 sounds not used in Lingala. Native Lingala speakers learning MABA 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.