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

Other sounds:
a labio-velar central approximant [w]
aspirated stops, affricates and fricatives (except [h])
laryngealized stops, affricates and fricatives (except [h])
vowels are both long and short

(from: Maddieson, I. 1984. Patterns of Sounds. Cambridge: Cambridge University Press.)