Journal of West African Languages Volume 44.1 (2017) HIGH-VOWEL PATTERNING AS AN EARLY DIAGNOSTIC OF VOWEL- INVENTORY TYPE* Roderic F. Casali Trinity Western University, Canada Institute of Linguistics, SIL International
[email protected] Abstract Vowel contrasts based on tongue root position are common in African languages. Many such languages (“/2IU/ languages”) have a tongue root contrast in high vowels, yielding two sets of phonemic high vowels, /i/, /u/ and /ɪ/, /ʊ/, as in the very common nine-vowel system /i ɪ e ɛ a ɔ o ʊ u/. Many other languages (“/1IU/ languages”) have an [ATR] contrast only in non- high vowels, as in the very common seven-vowel system /i e ɛ a ɔ o u/. The problem of determining, in the course of descriptive fieldwork, which type of vowel system is found in a language has sometimes proven surprisingly difficult in practice. The difficulty has revolved around the high [-ATR] vowels [ɪ], [ʊ], which have frequently been mistaken for other vowels, generally [i], [u] or [e], [o]. Confusion with mid [+ATR] vowels [e], [o] has been especially common, due to the auditory similarity of the two sets (Casali 1995a, 2008, Starwalt 2008). Largely in consequence, a good number of West African /2IU/ languages have been misanalysed as /1IU/ languages (Boyd 2015, Casali 1995a, Dakubu 1997, Rennison 1986, Schuh 1995). While it can sometimes be challenging to distinguish /2IU/ and /1IU/ systems solely on the basis of impressionistic phonetic data, however, the two systems show very striking differences in their typical phonological patterns (Casali 2003, 2008, 2016).