Close-mid central unrounded vowel Close-mid central unrounded vowel The close-mid central unrounded vowel, or high-mid central unrounded vowel, is a type of vowel sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is . This is a mirrored letter e, and should not be confused with the schwa , which is a turned e. It was added to the IPA in 1993; before that, this vowel was transcribed (Latin small letter e with umlaut, not Cyrillic small letter yo). Certain older sources transcribe this vowel . The letter may be used with a lowering diacritic ,
Close front rounded vowel modified by endolabialization), but this could be misread as a diphthong. Acoustically, this sound is "between" the more typical compressed close front vowel and the unrounded close front vowel . Close front rounded vowel The close front rounded vowel, or high front rounded vowel, is a type of vowel sound, used in some spoken languages. Acoustically it is a "close front-central rounded vowel". The symbol in the International Phonetic Alphabet that represents this sound is , and the equivalent X-SAMPA symbol is codice_1. Across many languages, it is most commonly represented orthographically as (in German, Turkish and Basque) or ,