Acoustic Analysis of Compound Vowels in Ali Tibetan Language

By using the method of acoustic experiment, this paper analyzes the acoustic characteristics of Ali Tibetan compound vowels, such as duration, tone and formant. It is concluded that there are 15 kinds of compound vowels in Ali Tibetan language, which are divided into oral compound vowels and nasal compound vowels; They are true compound vowels, and they all come from the reduction of syllables; Compound vowels are all long vowels, which are matched with long tones; The keys are 44 and 14, The condition of high flat tone 44 is that the initial consonant is clear, and the condition of low rising tone 14 is that the initial consonant is turbid. The study of compound vowels in Ali dialect in this paper can provide a certain reference for the further study of compound vowels in Weizang dialect in the future.