Experimental Study On The Phonetic Features Of Bobai DiLao Dialect In Guangxi

Based on the field investigation and acoustic experiment analysis,this paper carries out a comprehensive and systematic description of the phonetic characteristics of Bobai Dilao dialec?,and on this basis re-integrates the phonetic system of Bobai Dilao dialec?.There are totally six chapters.The first chapter is an introduction,a research summary and an introduction to the experimental process of this paper.In the second chapter,the vowel analysis determines the value of the main vowel through the vowel acoustic pattern.The acoustic characteristics of the binary vowel and triad vowel are summarized by analyzing the trend of the complex vowel formant and the proportional plotting graph.In the third chapter,the consonant analysis is based on the pronunciation method.The acoustic features of the stop and the squeak are studied by analyzing the spectrogram,VOT and transitional sign.The acoustic characteristics of the squeaky sound are analyzed by comparing the duration of the consonant,the center frequency and the lower limit frequency of the strong frequency region,and the intensity of the sound.Nasal and semi-vowels are described and characterized by analyzing the spectrogram and comparing the formant.The fourth chapter of the monographical study,with the squeaking sounds in the Bobai Dilao dialect,from the two aspec? of acoustic data and pronunciation physiological data,describes the difference between the two se? of squeaky sounds,confirm their phoneme opposition and summarize their historical sources and synchronic distribution types.The fifth chapter describes and analyzes the single tone of Bobai Diao dialec?.Firstly,compare the single tone value and tune characteristics of the speakers from different ages in Bobai Town,and determine the current single tone system of Bobai Town,and compare it with previous research conclusions such as Mr.Wang Li.Secondly,it describes the single tone of Bobai Town and Bobai Town's other two villages,and compares it with the tones of“Guangyun”to explore the tonal evolution of Bobai Dilao dialect.The sixth chapter summarizes the main argumen? of the full text,and poin? out the shortcomings and unresolved issues.