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 back unrounded vowel Close back unrounded vowel The close back unrounded vowel, or high back unrounded vowel, is a type of vowel sound used in some spoken languages. Acoustically it is a "close back-central unrounded vowel". The symbol in the International Phonetic Alphabet that represents this sound is . Typographically a turned letter "m", given its relation to the sound represented by the letter "u" it can be considered a "u" with an extra "bowl". It is not to be confused with , a sequence of the symbols and (which represent the close back rounded vowel and the near-close front unrounded vowel, respectively),