The Phonetic Experimental Study Of Suzhou Dialect In Gansu

The Suzhou dialect of Gansu belongs to the Hexi part of the Lanyin Mandarin.This paper analyzes the consonants,vowels,monosyllabics of Suzhou dialect from the perspective of acoustics.The consonants include plosives,affricates,fricatives,nasals and laterals.In Suzhou dialect,VOT of aspirated plosives is significantly greater than VOT of unaspirated plosives.Gap of unaspirated plosives is significantly greater than VOT of aspirated plosives.Gap and VOT were complementary.Plosives are two conversions on the acoustic pattern in slack area.The unaspirated is concentrated in the left part and the aspirated is concentrated in the right part.The duration of fricatives in Suzhou dialect is longer.In addition to [s],there is no turbid affrication in corresponding parts,and the others have turbid opposition according to the four articulation parts.From the left center to the right bottom of the pattern diagram reflects the change of voiceless fricatives from flexible friction to rigid friction,and from the left bottom to the right top of the pattern diagram reflects the change of voiced fricatives from flexible friction to rigid friction.The position of the high-frequency concentrated area of the fricative is higher than the fricative,and the dispersion is lower than the fricative.The closer to the left of the horizontal axis in the acoustic pattern,the stronger the plosives nature.[t?] is at the far left,and the plosives nature are the strongest.A larger value on the vertical axis indicates a narrower friction gap and more turbulent noise.The friction gap of [t?h]?[?]?[t?] formed during the pronunciation process is narrow and there is more turbulent noise.The duration of nasal and lateral sounds are longer.The duration order is [n]>(?)>[l]>[m].In the nasal and lateral formant pattern,the relative position and relationship can be seen.The duration of nasal and lateral sounds fluctuates around 40 ms,which is easily affected by the back vowel and resonance cavity.Through the comparative analysis confirmed (?) can be single for a nasal voice.The relative position of the vowel formant can be seen in the formant pattern.F1 is directly proportional to the height of the tongue.[i],[y],[u] have the highest tongue position and F1 has the lowest;[a] has the lowest tongue position and F1 has the highest.F2 is inversely proportional to the front and back of the tongue.[i],[y],and [?] have the tongue position forward and F2 is higher;[u] and [?] have the tongue position backward and F2 is lower.Vowels of [i]?[u]?[a] form an isosceles triangle with the apex a,and other vowels are distributed in the triangle.The changes of tongue positions of compound finals and nasal finals are clearly reflected in the pattern of formant.The range changes between high vowels is small.In the process of vowel change,the range of tongue position changes greatly.As the tongue position decreases,the F1 formant curve increases.The tongue position moves backward,and the F2 formant curve drops.The single tone of Suzhou dialect is Yinping 44,Yangpingshang 51,Qusheng 324.The comparison results of different genders and different ages showed that the tone types were all the same,and the order of the relative duration was as follows: Qusheng>Yinping>Yangpingshang.Yinping has strong stability in the double word structure.The Qusheng has a zigzag tone as the post-tone value,and it will also change to a mid-rise tone.Change on the Yangping is the most flexible.A comparative study was conducted through different genders and different ages,the double-word tone is summarized.Regardless of male,female,middle-aged or youth,the length of the post-word is longer than the length of the pre-word.