基频声学分析在鉴别环杓关节脱位和声带麻痹中的作用

The role of acoustic analysis of fundamental frequency in differentiating arytenoid dislocation from vocal fold paralysis

目的:分析环杓关节脱位和声带麻痹患者的持续元音声学参数值,探讨两者持续元音的声学特性及其在鉴别环杓关节脱位和声带麻痹中的价值。方法:收集33例单侧声带运动障碍患者的持续元音信号,元音采用/a/音,通过喉肌电图检查分为环杓关节脱位组和声带麻痹组,每组再按性别分为男性组和女性组。采用MDVP软件分析持续元音信号,获得扰动参数基频微扰(jitter)、振幅微扰(shimmer)、基频(Fo)和软发音指数(SPI);采用SPSS软件中的成组设计的秩和检验进行结果分析。结果:1在扰动参数的分析中,无论是男性还是女性,两组间Fo比较均差异有统计学意义(P<0.05),且环杓关节脱位组的Fo平均秩次均大于声带麻痹组。2无论是男性还是女性,两组间jitter、shimmer和SPI比较均差异无统计学意义(P>0.05)。结论:对单侧声带运动障碍的患者采用持续元音的客观声学分析,结果不论是男性还是女性,环杓关节脱位组的Fo平均秩次均大于声带麻痹组。这为声学分析方法用于鉴别这两组研究对象提供了理论依据。

Objective：Analysis of the sustained vowels of acoustic parameters in arytenoid dislocation and vocal fold paralysis.To investigate their acoustic characteristics and evaluate the role of this acoustic analysis method in differentiating arytenoid dislocation from vocal fold paralysis.Method：Thirty-three cases with unilateral vocal cord movement disorders were collected.All cases were divided into arytenoid dislocation group and vocal fold paralysis group through the laryngeal electromyography.Each group was further devided into male group and female group.The voice signals of sustained vowel of/a/were measured using the software MDVP and obtain the acoustic parameters（Jitter,Shimmer,SPI and Fo）.The acoustic characteristics between the two groups were observed and compared.Results were analyzed using Rank sum test for group design.Result：There were significant differences in Fo between arytenoid dislocation group and vocal fold paralysis group in both male and female group（P〈0.05）.And mean rank order of Fo in arytenoid dislocation group was greater than vocal fold paralysis group.There were no significant differences in jitter,shimmer and SPI between arytenoid dislocation group and vocal fold paralysis group（P〉0.05）.Conclusion：Mean rank order of Fo in arytenoid dislocation group is greater than vocal fold paralysis group in both the male and the female group.Fo is of value in differentiating arytenoid dislocation from vocal fold paralysis.This provides a theoretical basis for the acoustic analysis method to identify these two diseases.