Voiced bilabial implosive
The implosive b [ ɓ ] differs by the inwardly directed air flow from the European pronunciation of b.
It occurs in several African languages, such as the Hausa and in Bantu languages such as Swahili, Chishona, isiXhosa and isiZulu. In these languages except Kiswahili it is orthographically distinguished from the "European" b, which is a separate phoneme here, which occurs quite not only in European loanwords.
The space required for the implosion of the vacuum is generated by the articulation begins closed larynx.