声带振动功能的定量检测

Quantitative analysis of vocal fold vibration

目的：探讨声带振动功能的定量检测技术及其影响因素。方法：应用计算机软件，分析６０例正常人动态喉镜图像和电声门图参数，结合性别、频率和声强，进行统计分析。结果：声带振动周期中发声频率增加伴随开放相相对延长（ＣＱ减小，ＯＱ增大），而声强增加则开放相相对缩短，且渐闭相缩短更明显（ＯＱ减小，ＳＱ增大），男性较女性声门闭合相长（ＯＱ小）。发声时声带闭合的速度大于开放的速度（ＣＶ＜ＯＶ，ＣＣＰ＜ＣＯＰ）。结论：动态喉镜计算机图像分析技术和电声门图测试可对声带振动功能进行定量分析。正常人声带振动模式受性别、频率和声强的影响。

Objective: To measure vocal fold vibration quantitatively and study the effects of gender and phonation mode. Method: The authors adopted a new computerized image analysis technique and EGG in 60 normal speakers,and the parameters of vocal fold vibration were measured and analyzed according to the loudness,pitch and gender. Result: With frequency increasing,CQ got smaller and OQ larger which expressed longer open phase.As intensity increased,the duration of open phase became shorter and the closing phase got relatively much shorter.Males had a longer closed phase than females.The closing duration appeared relatively shorter than opening duration in phonation. Couclusion: The quantitative measures of vocal fold vibration become feasible with modern computers and commercially available image analysis software.Certain features of vocal fold vibration vary with intensity variations,while others vary with gender or frequency variation.