The close-mid central unrounded vowel, or high-mid central unrounded vowel,[1] is a type of vowel sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ɘ⟩. This is a mirrored letter e, and should not be confused with the schwa ⟨ə⟩, which is a turned e. It was added to the IPA in 1993; before that, this vowel was transcribed ⟨ë⟩ (Latin small letter e with umlaut, not Cyrillic small letter yo). Certain older sources[2] transcribe this vowel ⟨ɤ̈⟩.
Conversely, ⟨ə⟩, the symbol for the mid central vowel may be used with a raising diacritic ⟨ə̝⟩ to denote the close-mid central unrounded vowel, although that is more accurately written with an additional unrounding diacritic ⟨ə̝͑⟩ to explicitly denote the lack of rounding (the canonical value of IPA ⟨ə⟩ is undefined for rounding).
^ abJassem (2003:105) The source transcribes this sound with the symbol ⟨ɨ⟩ but one can see from the vowel chart at pag. 105 that the Polish sound is closer to [ɘ] than to [ɨ].
Asu, Eva Liina; Teras, Pire (2009), "Estonian", Journal of the International Phonetic Association, 39 (3): 367–372, doi:10.1017/s002510030999017x
Bauer, Laurie; Warren, Paul; Bardsley, Dianne; Kennedy, Marianna; Major, George (2007), "New Zealand English", Journal of the International Phonetic Association, 37 (1): 97–102, doi:10.1017/S0025100306002830
Chirkova, Katia; Chen, Yiya (2013a), "Lizu", Journal of the International Phonetic Association, 43 (1): 75–86, doi:10.1017/S0025100312000242
Chirkova, Katia; Chen, Yiya (2013b), "Xumi, Part 1: Lower Xumi, the Variety of the Lower and Middle Reaches of the Shuiluo River", Journal of the International Phonetic Association, 43 (3): 363–379, doi:10.1017/S0025100313000157
Chirkova, Katia; Chen, Yiya; Kocjančič Antolík, Tanja (2013), "Xumi, Part 2: Upper Xumi, the Variety of the Upper Reaches of the Shuiluo River", Journal of the International Phonetic Association, 43 (3): 381–396, doi:10.1017/S0025100313000169
Cox, F.M. (2006), "The acoustic characteristics of /hVd/ vowels in the speech of some Australian teenagers", Australian Journal of Linguistics, 26: 147–179, doi:10.1080/07268600600885494, S2CID62226994
Durie, M.; Hajek, J. (1994), "A revised standard phonemic orthography for Australian English vowels", Australian Journal of Linguistics, 14 (1): 93–107, doi:10.1080/07268609408599503
Fast Mowitz, Gerhard (1975), Sistema fonológico del idioma achual, Lima: Instituto Lingüístico de Verano
Iivonen, Antti; Harnud, Huhe (2005), "Acoustical comparison of the monophthong systems in Finnish, Mongolian and Udmurt", Journal of the International Phonetic Association, 35 (1): 59–71, doi:10.1017/S002510030500191X, S2CID145733117
Jassem, Wiktor (2003), "Polish", Journal of the International Phonetic Association, 33 (1): 103–107, doi:10.1017/S0025100303001191
Kanu, Sullay M.; Tucker, Benjamin V. (2010), "Temne", Journal of the International Phonetic Association, 40 (2): 247–253, doi:10.1017/S002510031000006X
Kerr, Harland (1988), "Cotabato Manobo Grammar"(PDF), Studies in Philippine Linguistics, 7 (1): 1–123, archived from the original(PDF) on 2015-05-11
Krech, Eva Maria; Stock, Eberhard; Hirschfeld, Ursula; Anders, Lutz-Christian (2009), Deutsches Aussprachewörterbuch, Berlin, New York: Walter de Gruyter, ISBN978-3-11-018202-6
Lee, Hyun Bok (1999), "Korean", Handbook of the International Phonetic Association, Cambridge University Press, pp. 120–122, ISBN0-521-63751-1