these are the sounds found in most native Igbo dialects:
there are also sounds not on the chart

Other sounds:

labio-velar central approximant [w]
labial-velar double-articulated stops [kp] and [gb]
voiced and voiceless labialized velar stops
labialized velar nasal
sounds occur in three contrastive tones

(from: Handbook of the International Phonetic Association. 1999. Cambridge. Cambridge University Press.)