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-mid front rounded vowel Close-mid front rounded vowel The close-mid front rounded vowel, or high-mid front rounded vowel, is a type of vowel sound used in some spoken languages. Acoustically, it is a close-mid front-central rounded vowel. The symbol in the International Phonetic Alphabet that represents the sound is , a lowercase letter o with a diagonal stroke through it, borrowed from Danish, Norwegian, and Faroese, which sometimes use the letter to represent the sound. The symbol is commonly referred to as "o, slash" in English. For the close-mid front rounded vowel that is usually transcribed with the symbol or , see near-close front