A Research On The Experimental Contrast Of Wu Dialect And Xiang Dialect

This article studies the acoustic features of plosive in8regions from the Wudialect and Xiang dialect by the means of phonetic experiments, and analyzes thecharacteristics of the two dialects from the five aspects of intensity, VOT, transition,spectrum of the following vowels and relative burst energy to compare their acousticfeatures.This article can be divided into six chapters.The first chapter mainly introduces the present research situation of plosive ofthe Wu and Xiang dialect, expounds the theory and method used in the experiment,presents the experimental material, procedures, instruments and the briefinformation of the speakers, and explores the purpose and significance of thisresearch.The second chapter analyses the intensity of the plosives, mainly throughmeasuring the joint intensity of the consonant and vowel. By comparing therelationship between different pronouncing positions and methods, we prove that theplosives intensity in Wu and Xiang dialect have the closet relationship with theirpronouncing methods, for the intensity of the unaspirated sound is significantlygreater than the aspirated sound with the same pronouncing spot. At the same time,intensity is also relative to the position of articulation, namely the intensity of velarplosive is smaller than the lips and tongue plosive.The third chapter examines the relative burst energy of monosyllables in the Wuand Xiang dialect. We draw the following conclusions from the analysis. The VOTdifferences have something to do with the positions，methods of articulation and thefollowing vowels’ phonemes. For example, the length of aspirated plosives’ VOT islonger than the unaspirated plosives; and in all types of plosives, there is an obviousspot effect, namely the VOT of velar plosive is significantly longer than the lips andtongue plosives, and the VOT relations of lips and tongue plosives in each dialect isquite different.The fourth chapter analyzes the transition syndrome of the Wu and Xiangdialects’ plosive. Firstly we analyze the formant pattern of the connecting vowels,compare the sound sign trend of the F2and F3to contrast the synergistic effect ofWu dialect and Xiang dialects’ unaspirated voiceless plosives and voiced plosives.Then we use the principle and application method of track equation to examine the coarticulation effect between the plosives and vowels and after that we get the trackexpressions of the voiced plosives to calculate their tracks value.The fifth chapter focuses on the analyzing and comparing the discrete spectrumof the unaspirated voiceless plosives and voiced plosives in the Wu dialect andXiang dialect, in the recording materials，we select those monosyllabic that arefollowed by/a/. Firstly, we compare the discrete spectrum characteristics in thesteady part of unaspirated voiceless plosives and voiced plosives and at thebeginning of vowels. Then we compare the discrete spectrum of different dialectsabout their formant distribution and energy value. Secondly, we compare the energydifference of the harmonic wave by subtracting the energy between the H1and H2,and by comparing the Amplitude difference among the beginning, middle and endsection of the vowels, we prove that voiceless unaspirated plosives both in Wu andXiang dialect do not cause the following vowel to gasify. And the voiced plosives inXiang dialect also have no obvious gasification effect, not the same in Wu dialectwhose gasification can last until the middle part of vowels. At last, we compare theacoustic characteristic of relaxation of Wu and Xiang dialects’ plosives. Comparingmainly from the vibration amplitude of power spectrum, spectral slope, noise,intensity of relaxation acoustic vowel and its decay trend, we can prove that therelaxation features of the vowels in Wu dialect is more obvious than that in Xiangdialect.The sixth chapter mainly measures the maximum energy barrier energy at theplosive point and the following vowel, normalize the ratio and express in the form ofpercentage. From the contrast, we can see the RBE percentage in Wu dialect isslightly larger than the corresponding parts in the Xiang dialect, presenting thedifferent rules in different articulation positions. While the RBE is generally decidedby energy value at the point of plosive and the maximum energy value of the vowel,while the two factors can also be affected by other s among which the method ofarticulation is obvious. From the principle of aerodynamics perspective, the differentintensity of airflow from the lungs of and the barriers of organs’ changing willproduce different pressure, which could explain the different feeling in listening inthe two major dialect areas.The concluding section summarizes the main conclusions and theinsufficiencies in this article.