Overlap Rate of Vowel Acoustic Spatial Distribution Patterns and Degree of Phylogenetic Relatedness between Languages
This article is based on the"Unified Platform for Acoustic Parameters of Minority Languages and Dialects in China"and employs the four algorithms for overlap rate of acoustic spatial distribution patterns of vowels,viz.the spectral overlap assessment method,the a posteriori probability method,the vowel overlap analysis with convex hulls method,and the overlap analysis with Bhattacharyya coefficient method,to calculate and statistically analyze the overlap rate of acoustic spatial distribution patterns of vowels,the overlap rate of acoustic spatial distribution patterns of the three vertex vowels/ɐ,i,u/,and the overlap rate of triangle acoustic spatial patterns of the three representative languages of the Altaic language family,that is,Mongolian,Uyghur,and Ewenki.The study aims to explore the correlation between the overlap rate of vowel acoustic spatial distribution patterns in these languages and the distance of their phylogenetic relationship.This study further verifies the hypothesis that the similarity of phonetic and prosodic acoustic patterns corresponds to the degree of phylogenetic relatedness.The conclusion is that the distance of genetic affiliation between Mongolian and Ewenki is relatively closer than that between Mongolian and Uyghur.There is a strong correlation between the overlap rate of vowel acoustic spatial distribution patterns and the degree of phylogenetic relatedness,indicating that the higher the overlap rate,the closer the phylogenetic relatedness between languages.
vowel acoustic spatial distribution patternoverlap ratedegree of phylogenetic relatedness
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