Research On The Mandarin Acquisition Acoustic Error Of Tibetan College Students

Mandarin plays an important role in the international arena and is often used as the representative language of important international conferences.The United Nations has established six international languages,including Chinese.Therefore,the popularization of Mandarin makes many people learn Chinese,but because of the difference in pronunciation,it is difficult for ethnic students to read the pronunciation of Mandarin accurately.The U-Tsang dialect in Tibet is a tonal language like Mandarin.Lhasa is the representative language of the U-Tsang dialect.Therefore,for the Mandarin learners in ethnic minorities,the mastery and accurate pronunciation of Mandarin is undoubtedly the key point for them to learn Mandarin,and it is also difficult.Currently,the Mandarin acquisition problem is that Tibetan is also a major minority in China.However,there are few studies on the acquisition of Mandarin by Tibetan,and the research content is not comprehensive.Therefore,this thesis studied the Mandarin acquisition acoustic characteristics of Tibetan students.This thesis takes the Tibet learners of Mandarin Chinese in Lhasa as the main research objects,and studied their acoustic characteristics in the Mandarin acquisition from the perspective of phonetic feature learning.This thesis mainly analyzed the vowel formant,monosyllabic tone,disyllabic tone and disyllabic tone from Mandarin sentences of the minority Mandarin acquisition.The vowel formant experiment analyzed the pronunciation characteristics from various angles.The pronunciation error of the research subjects was obtained by comparing with the tone pronunciation of standard Mandarin.The work and innovation of the thesis is:Firstly,questionnaire survey.In order to get the Mandarin acquisition actual situation of Tibetan students,this thesis designed questionnaires,investigated Tibetan students’ willingness to learn Mandarin,and learn difficulties.We obtained the research focus through the analysis of the statistical results of the questionnaire,and we designed the experimental text corpus based on the statistical results of the questionnaire.Secondly,corpus design.The corpus design includes text corpus design and speech corpus design.The design of the text is based on the statistical results of the questionnaire and is according to the characteristics of the syllables of the Mandarin.Including 12 vowels,400 monosyllabic tones,1128 pairs of disyllabic tones and 34 sentences.The recording of experimental speech corpus was completed in a professional sound protect room.Then we processed the speech corpus used speech processing tool and extracted the experimental speech parameters.Finally,we obtained the Mandarin acquisition acoustic characteristics of Tibetan students by analyzing the experimental speech parameters are.Thirdly,tone error analysis.This thesis extracted the fundamental frequency value ofTibetan students Mandarin acquisition speech corpus,and calculated it into the form of five-degree value.we obtained the Mandarin acquisition error characteristics about monosyllabic tone,disyllabic tone of Tibetan students,and the stage characteristics of Mandarin acquisition.For the vowel acquisition,we extracted the formant data of speech corpus and designed analysis of formant data,acoustic triangle,dispersion and accuracy experiments.Finally,we obtained the characteristics of vowel acquisition from different angles.