This paper examines double articulations in three African languages. Mamvu.Lese and Efe. all belonging to the Central Sudanic language family. The phonetic inventory of these languages exhibit some very interesting facts, among which the most striking are voiceless labiovelars stops involving a trilled release and a labiouvelar stop which shows the combination of a voiceless and a voiced part in the same consonant. Acoustic and aerodynamic measurements describing the production of these sounds are presented.