International Phonetic Alphabet

International Phonetic Alphabet (Revised to 2015)
IPA was established by the International Phonetic Association with a view to transcribing the speech sounds of all the languages in the world with the same standards.
Therefore, the organs, which create the speech sounds, could be clearly specified and be used as the criteria for categorizing all the speech sounds of the world.
The picture showing the articulation on te homepage was illustrated based on Ladefoged (1999), Koizumi (1998) and Saito (1997)