Research On The Perception And Production Of Mandarin Tones By Ando Tibetan College Students

In recent years,second language learning has become a hotspot of phonetics research.The learning of Mandarin tone focuses on foreign students while the learning of Mandarin Tone by Tibetans is relatively less,and there is lack of analysis of the error pattern of Mandarin learning by Ando Tibetan students in rural and pastoral areas under the influence of phonetic ecological factors.Mandarin is a tonal language while Ando Tibetan is not.Mandarin Tone is a difficult point for Ando Tibetan college students.Therefore,this thesis takes the error pattern of Mandarin tone by Ando college students as the research content.Based on the analysis of phonetic ecological factors,this thesis uses the method of combining speech engineering with experimental phonetics.The main work of this thesis is as follows:Firstly,this paper investigates the learning environment of Ando Tibetan students based of ecological factors.This thesis investigates the influence of phonetic ecological factors on Mandarin learning from different groups of Ando Tibetans by using the method of traditional phonetics field research.We obtain the error pattern of Mandarin Tone both in listening and pronunciation by students from Ando rural and pastoral areas through statistical analysis.Secondly,an perceptual corpus is designed and auditory perception experiments are carried out based on the effects of phonological ecology.Taking four grades of students from Ando pastoral and rural areas as the research object,the experiment of auditory perception is designed from two aspects of monosyllable and two-syllable.The influence of phonological ecological factors is obtained through experimental data analysis.The error pattern of Mandarin Tone perception in two regions: the perception level in rural areas is higher than that in pastoral areas;the perception accuracy is reduced:T2 >T3 > T1 >T4;T3 and T2 are both perception difficulties for Ando Tibetan college students.Thirdly,a corpus of tone pronunciation is designed,and the experiments of production of monosyllabic and disyllabic tone errors are completed.Based on phonological ecology and the combination of experimental phonetics and speech engineering,this paper designs a text corpus of tone errors.Taking four grades of Ando Tibetan college students in pastoral and rural areas as the research object,this thesis analyses the error pattern of monosyllable and two-syllable.Two-syllable are analyzed from four tones as prefix syllables and post syllables,and the error patterns of different tone combination types are obtained: two-syllable have more errors than single syllables;T3 and T2 are easy to confuse;the pronunciation level of pastoral areas is higher than rural areas;the pronunciation difficulty of Mandarin monosyllables and two-syllable is the same: T4>T1>T3>T2;The sequence of pronunciation level of Mandarin from high to low is as follows,rural area: sophomore > freshman > junior >senior;pastoral area: freshman > sophomore > junior > senior.Two-syllable errors mainly occur in tone pairs 1-2,1-3,2-3,2-4,3-2,3-3,4-2,4-3.