蒙古语复合元音声学分析

An Acoustic Analysis on Diphthongs in Mongolian

本文从复合元音共振峰动态滑移的连续性、复合元音共振峰与时长的非对称性和共振峰的变化率参数对蒙古语的复合元音进行研究。研究结果表明,复合元音的主要声学特征体现在滑动动程上;复合元音的后置元音起主导作用,前置元音基本上失去了其独立音段的特点,这是蒙古语书面语复合元音演变为前长元音的主要原因;复合元音时长的非对称性特点、总体频率跨度和过渡段斜率可以作为检验蒙古语复合元音前长化程度的主要声学参数。

This paper presents a study on the diphthongs in the Mongolian language in terms of the continuity of the dynamic gliding of diphthong formant,the asymmetry between formant and duration of diphthongs,and the parameters of the changing rate of formant.The results show that the main acoustic characteristics of Mongolian diphthongs are reflected in the gliding duration.The latter vowel of a diphthong plays a leading role,while the former vowel basically loses its characteristics as an independent segment,which is the main cause of front long vowels being the goal of change for diphthongs in written Mongolian.The asymmetric characteristics of sound duration,the total span of frequency,and the slope of transition can be used as the main acoustic parameters to examine the frontness-lengthing degree of Mongolian diphthongs.