Phonetic Features On Lufeng Min Dialect In Eastern Guangdong

Based on the field investigation and acoustic experiment analysis,this paper carries out a comprehensive and systematic description of the phonetic characteristics of Lufeng dialec?.The paper is consist of six chapters.Chapter one is an introduction about basic features and current researches situation of Lufeng dialect,and briefly interpret the experiment methods and procedures.Chapter two shows the phonetic features of vowel.The value of the five main vowels is determined through the vowel acoustic pattern.The acoustic characteristics of the binary vowel and triad vowel are summarized by analyzing the diagrams of vowels,formant diagrams and duration graph,and explains the dynamic changes and co-articulation effect.By the analysis above,we concluded that iu,ei,oi are the genuine diphthongs;au,ai,ou are the front-loudness diphthongs;ua,ue,io,ia,ui are the back-loudness diphthongs;iau,uai are the middle-loudness diphthongs.Chapter three is the discussion on CV structure.The interaction between vowel and consonant is analyzed by means of vowel acoustic graph and duration graph.we concluded that the vowels are more affected by head vowels than by consonant stops.Chapter four analysis the phonetic features of consonant basing on the pronunciation method.The acoustic characteristics of the stop and the squeak are studied by analyzing the spectrogram,VOT and transitional sign.Stop and squeak can be classified according to VOT,and vowel and consonant can interact each other from the perspective of transitional sign.The acoustic features of the squeaky sound “f “and “h” are classified 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 is distinguished and characterized by analyzing the spectrogram and comparing the formant.Chapter five is the survey on tone.The pitch feature and the tone sandhi are studyed by analyzing pitch diagram of citation tone and disyllabc tone sandhi.From the study,Lufeng hua owns a seven-tone system and an eight-tone system.we define the tone number,and find the citation tones will change when they are the first word in tone sandhi.In addition,the developing rules of tone is studyed by means of analyzing the diachronic sources of Middle Chinese as well.Chapter six is a special study into the different glottal stops of lufeng Daan Dialect,analyzing where is their distinction by the mechanisms of barometric and airflow,studying whether the different glottal stops have effects on the main vowel by EGG,as well as discusses the interrelation between the acoustic,airflow mechanisms of different glottal stops.From the result of the experiment,the different glottal stops can be classified according to the airflow value,and the glottal stop can affect the vowel from the analysis of the signal of EGG,but the influence of different glottal stops on vowels is different:-p,-t,-? are one kind,-k are another kind.Chapter seven is the conclusion.In this part we make a conclusion of the main idea and the innovative point of this paper.And then we propose shortcomings and some problems worthy of further exploration.