Analysis of Acoustic Parameters of Amdo Tibetan monophthong Based on Signal Processing Technology

Abstract

This paper sorts out the phoneme distribution of Amdo Tibetan vowels, and uses acoustic experimental methods to analyze the pitch, duration, tone intensity and formants of Tibetan Amdo vowels. The study found that the fundamental frequency of the unit tone is about 190Hz-280Hz. When the voiced consonant /r/ is an adjacent consonant, the fundamental frequency usually decreases. In terms of duration, the position of the vowel in the syllable structure and the difference in the pronunciation of the consonants before and after will affect the duration of the vowel. In addition, subsequent consonants have a greater impact on vowels than preceding consonants. In terms of sound intensity, the sound intensity of the back and high round vowels /o, u/ is relatively high, while the front low and second-low vowels are relatively small, which is a special phenomenon. In addition, from the perspective of the vowel pattern, the position of /e/ is higher than /i/ is a special phenomenon discovered in this study.