Main vowel variations in syllablesm with final consonants and final semi-consonants of Son Tinh local dialect in Quang Ngai

This paper reports a problem related dialects, which is main vowel variations in syllables with final consonants and semiconsonants of Son Tinh local dialect in Quang Ngai. We call it “local dialect” as its phonetics is somewhat different from Quang Ngai dialect’s. In the dialect of Son Tinh, with the same phoneme but when combined with different final consonants and semiconsonants, it will produce different phonetic variations. It is said that the phonetics of local dialects along the coast lines of the South of the Central are very complicated but in fact they varied with fixed rules, typical of which was the case of Son Tinh local dialect in Quang Ngai which resulted in the lost of the main vowel [ə̆] (written as "â"); at the same time, mass-produced were homophones, making the number of complex syllables reduced in half, compared with the Vietnamese language.