Where symbols appear in pairs, the one to the right represents a rounded vowel. Vowel length is indicated by appending ː. The open front 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 a, and the equivalent X-SAMPA symbol is a. This symbol is very frequently used for an open central unrounded vowel, and this usage is accepted by the International Phonetic Association.[citation needed] Since no language distinguishes front from central open vowels, a separate symbol is not considered necessary. If required, the difference may be specified with the central diacritic, [ä], or the retracted diacritic, [a̠] (see Centralized vowels). Many Sinologists use an unofficial symbol [ᴀ] (small capital A) alternatively (see Obsolete and nonstandard symbols in the International Phonetic Alphabet). [edit] Features - Its vowel height is open, which means the tongue is positioned as far as possible from the roof of the mouth.
- Its vowel backness is front which means the tongue is positioned as far forward as possible in the mouth without creating a constriction that would be classified as a consonant. This subsumes central open vowels because the tongue does not have as much flexibility in positioning as it does for the close vowels; the difference between an open front vowel and an open back vowel is equal to the difference between a close front and a close central vowel, or a close central and a close back vowel.
- Its vowel roundedness is unrounded, which means that the lips are not rounded.
[edit] Occurrence Most languages have some form of an unrounded open vowel. For languages that only have a single low vowel, the symbol for this vowel <a> may be used because it is the only low vowel whose symbol is part of the basic Latin alphabet. Whenever marked as such, the vowel is closer to a central [ä] than to a front [a]. [edit] References [edit] Bibliography - Carbonell, Joan F.; Llisterri, Joaquim (1992), "Catalan", Journal of the International Phonetic Association 22 (1-2): 53-56
- Cruz-Ferreira, Madalena (1995), "European Portuguese", Journal of the International Phonetic Association 25 (2): 90-94
- Fougeron, Cecile; Smith, Caroline L (1993), "Illustrations of the IPA:French", Journal of the International Phonetic Association 23 (2): 73-76
- Jassem, Wiktor (2003), "Polish", Journal of the International Phonetic Association 33 (1): 103-107
- Martínez-Celdrán, Eugenio; Fernández-Planas, Ana Ma.; Carrera-Sabaté, Josefina (2003), "Castilian Spanish", Journal of the International Phonetic Association 33 (2): 255-259
- Merrill, Elizabeth (2008), "Tilquipan Zapotec", Journal of the International Phonetic Association 38 (1): 107-114
- Rogers, Derek; d'Arcangeli, Luciana (2004), "Italian", Journal of the International Phonetic Association 34 (1): 117-121
- Thelwall, Robin (1990), "Illustrations of the IPA: Arabic", Journal of the International Phonetic Association 20 (2): 37-41
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