High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! Taa, also known as Xóõ, is a Khoisan language with a very large number of phonemes (speech sounds), with at least 58 consonants, 31 vowels, and four tones (Traill 1985, 1994 on East Xoon), or at least 87 consonants, 20 vowels, and two tones (DoBeS 2008 on West Xoon), by many counts the most of any known language. These include 20 (Traill) or 43 (DoBeS) click consonants and several vowel phonations, though opinions vary as to which of the 130 (Traill) or 164 (DoBeS) consonant sounds are single segments and which are consonant clusters.