A Study Of Phoneme Acoustics In Han-accent In Linxia Dialect

Linxia has occupied a very important position in the history of China from time immemorial.Since the formation of the Silk Road,the Linxia region has become one of the important courier station on the Silk Road.With the continuous increase of business travel,language exchanges and integration,Linxia dialect formed its own unique color.There are 31 ethnic minorities in Linxia.In addition to Hui,other ethnic minorities have their own language.In the central dialect of Linxia,there are han-accent and hui-accent.The han-accent is Linxia dialects,and the hui-accent is a word spoken by the Hui people.This article focuses on the analysis of the initials,vowels,and tones of han-accent in Linxia dialect's,trying to show the overall appearance of han-accent and reveal their phonological characteristics.There are 26 initials in han-accent in Linxia dialect's.The study of the initials is mainly based on the different pronunciation methods,and they are introduced from the aspects of plosive,fricative,affricate,lateral approximant,and nasal.The analysis of the initials mainly analyzes the duration and energy of the three-dimensional spectrogram.In addition,the formants of the voiced consonants are analyzed.The results of the study found that the duration of the aspirated sound was longer than that of the non-aspirated sound.This only distinguished between the plosive and the affricate.There are 8 voiced consonants in the 26 initials.The vocal cords vibrate when voiced,and appear as distinct formants in the spectrogram.There are 26 initials in han-accent in Linxia dialect's.According to the structure of vowels,they are introduced from the aspects of unit of vowels,complex-vowel finals and nasal consonants vowels.The results of the study found that there are two tongue vowels,one retroflex-vowel,and some nasalized vowels in the unit of vowels.And the central vowel [? ] does not appear alone.It only appears when combined with nasal sounds.The acoustic characteristics of vowels are quite obvious.There are obvious formants in the spectrogram.Nasal vowels and nasal consonants vowels will have nasal formants at the end.In the complex-vowel finals and nasal consonants vowels are divided into four categories based on the beginning of the vowel.That is to say,the vowels that begin with[i ],[u ],[y ] and the vowels that do not begin with[ i],[u ],[ y].And we will summarize and analyze the finals from these four categories.The study of tones of han-accent mainly uses the method of experimental phonetics to analyze the collected data,to determine the tone pitch of han-accent in Linxia dialect's.The study found that there are 2 tone pitch in the han-accent,namely tone pitch 33 and tone pitch 51.In general,this study makes a detailed study of the phonological system of the han-accent in Linxia dialect's,which allows us to have a general understanding of the Linxia dialect,so as to provide a simple reference for studying the Linxia dialect in the future.