Acoustic feature and variance of Uigur vowels

Based on data retrieved from Unified Minority Speech Parameter Database Platform, this paper examines main acoustic parameters of Uigur vowels of two speakers (MA2 & FE2). We have found following facts regarding Uigur vowels: vowel acoustic space is closely related with duration, which is affected by syllabic position, number and type. For vowel in word-initial CV and V syllable, vowel duration is decreased with increasing of number of syllable. But, the difference of vowel duration between monosyllabic and disyllabic words is huge, reaching 2-4 times in most cases. In addition, vowel /ε/, /o/ have longer durations and /i/, /u/ (high vowels) have shorter durations. Vowel /u/ has wider variance of duration.