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Labio-palatalization
A labio-palatalized sound is one that is simultaneously labialized and palatalized. Typically the roundedness is compressed, like , rather than protruded like . The symbol in the International Phonetic Alphabet for this secondary articulation is , a superscript , the symbol for the labialized palatal approximant. If such sounds pattern with other, labialized, consonants, they may instead be transcribed as palatalized consonants plus labialization, , as with the = of Abkhaz or the = of Akan.
A voiced labialized palatal approximant occurs in Mandarin Chinese and French, but elsewhere is uncommon, as it is generally dependent upon the presence of front rounded vowels such as and , which are themselves not common.〔Maddieson, Ian; Patterns of Sounds (Cambridge Studies in Speech Science and Communication); p. 95; ISBN 0-521-26536-3〕 However, a labialized palatal approximant and labio-palatalized consonants appear in some languages without front rounded vowels in the Caucasus and in West Africa,〔Maddieson, Ian; Patterns of Sounds; pp. 92 and 292〕 such as Abkhaz, and as allophones of labialized consonants before , including the at the beginning of the language name ''Twi.'' In Russian, and trigger labialization of any preceding consonant, including palatalized consonants, so that ''нёс'' 'he carried' is phonetically .
Iaai has a voiceless labialized palatal approximant .
==Labial–palatal consonants==
Truly co-articulated labial–palatal consonants such as are theoretically possible.〔(Segmental phonology ) (see pp. 7–8)〕 However, the closest sounds attested from the world's languages are the labial–postalveolar consonants of Yélî Dnye in New Guinea, which are sometimes transcribed as labial–palatals.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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