An Experimental Study On The Phonetic Sounds Of The Southern Fujian Dialect In Cangnan, Zhejiang

This paper takes the Southern-Min dialect of Lingxi Town in Cangnan as the representative,and conducts acoustic phonetics research on the Southern-Min dialect of Cangnan,and examines the variation of dialect.The full paper has four chapters.The first chapter is the introduction.The second,third and fourth chapters are consonant initials,vowel finals and tonal experiments.The main conclusions are as follows.The consonant initials experiment:?1?The voiced stop has the longest duration of up to about 90ms.The subsequent vowel has a direct impact on the transitional sign.The spectral moment feature is significant for distinguishing between unaspirated voiceless stop sounds.The spectrum center of gravity of[p]is the lowest,that of[g]is the highest;the spectrum energy of[k]is the most dispersed,and that of[t][t^h][p^h]is more concentrated.?2?The spectrum center of gravity of the voiced affricate sound[d???]is relatively low,and the unaspirated voiceless affricates[ts][t???]are relatively high.The spectral energy of the blade-palatal sounds[t???][t???h]are relatively concentrated,and that of[dz]and the front alveolar sounds[ts][tsh]are relatively scattered.?3?The duration of the[c][s]is longer,and the duration of[???]is about twice that of[x].The spectral envelope of[x]is opposite to[s][???].[x]is descending,its energy is concentrated in the low frequency band;[s][???]is rising,and their energy are concentrated in the high frequency band.?4?The nasal sound[???]has a long duration and a large difference in individual duration.The spectrum center of gravity of the lateral sound[l]is higher,and that of the three nasal sounds is closer.[???]has the highest dispersion,[1]has the lowest dispersion.The vowel finals experiment:?1?The acoustic concentration spatial distribution map of the monophthong acoustics is in good agreement with the traditional vowel chart.However,the vowel finals of "Zhu,Qu,Ju" and other words are closer to the vowel[???],not[???];the "Fei,Chui,Ke" vowel is closer to the vowel[???];vowel[???]and[???]Fi,F2 formant data are relatively close,the difference is not large.The tongue position of vowel is related to the F1F2 dispersion.?2?The diphthong finals[i???][ie][???]have a short duration,which are related to their origin.And each component of the dipthongs shows a trend of centralization in the Fi-F2 concentrated acoustic spatial distribution.The rate of change of F2 is directly related to the acoustic space distance between vowels.?3?By fitting the quadratic curve of the formant,it is found that the F1C2,F₂C2,and F₃C1 parameters can distinguish the falling F1 type diphthongs.The three parameters F₂C1,F₂C2,and F3C2 can be used to distinguish the triphthongs.?4?The nasal vowel still retains the duration characteristics of the oral vowel.The nasal vowel formant has a centralization trend in the spatial distribution of Fi-F2,and the F2 bandwidth is large.There is a pole in the low frequency band of about 240Hz in the two-dimensional spectrogram.The acoustic characteristics of nasalization are more complex,and different nasal vowels have different characteristics.?5?The final vowel with the nasal rhyme is also in the centralization trend of the resonance peak and bandwidth concentration spatial distribution map.The main vowels of the final vowels with the nasal rhyme are closer to the spectral features of the oral monophthongs.The tone experiment:Cangnan Southern-Min dialect has five types of tones:Yinping,Yangping,Yinshang,Yangshang,and Qusheng.The values of the tones are:44,23,52,32,21.The duration relationship between each tone is:Yinping>Yangping>Qusheng>Yangshang>Yinshang.From the perspective of social variation,the type of the five tones between genders are the same,but the fundamental frequency trend and the tone value are different.The inter-generational fundamental frequency trends are basically similar.