The Acoustic Analysis On Fricatives Of Huuchin-barga Vernacular

The thesis conducts an acoustic analysis on 3 fricatives,namely/s/、/c/、/x/,of Huucin-barga vernacular by using Minispeech and praat etc,on which the acoustic parameter libarary of Huucin-barga vernacular is established.On the basis of analyzing relavant parameters,the phonetic features and an acoustic pattern diagram of fricatives are detailly described.The thesis includes following parts:introduction,mainbody,conclusion,reference and appendix.The introduction mainly introcuces the distribution of Huucin-barga vernacular,former studies,intention and significance of subject selection,as well as the research approaches.The first chapter analyzes the variants of fricatives in different contexts by using SPG and conducts dynamic and static description on the formant of fricatives on the word level,in which it shows that the variant of/s/appears as[s]and[sh],/c/as[c]and[ch],/x/as[c],[x]and[x].Based on this,it is concluded that the formant will decrease in the order of/s/→/c/→/x/with backeward displacement of articulation.The second chapter conducts dynamic and static description on the duration and intensity of fricatives on the word level.It comes to the conclusion that the duration and intensity of different fricatives will decrease in the order of/s/→/c/→/x/.On the other hand,the duration and intensity of the same fricative will decrease in the order of suffix→middle letter→initial letter,or in the order of monosyllable→disyllable→polysyllabe.The third chapter demonstrates the center of gravity and dispersion of Huucin-barga vernacular in the form of spatial graphs and pattern diagrams,as well as the distribution features of fricatives.On this basis,it is concluded that the distribution of/s/and/c/is more centralized and dense,well the distribution of/x/is more wide and disperse.What’s more,the center of gravity will decrease in the order of/s/→/c/→/x/with the backward displacement of articulation,well the dispersion is contrary to the result.