Double articulations in some Mangbutu-Efe languages

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 exhibits some very interesting facts, among which the most striking are voiceless labial velar stops with double bursts, and a labial uvular 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.