ObjectiveAcoustic analysis of voice is typically conducted on recordings of sustained vowel phonation. This study applied perturbation and nonlinear dynamic analyses to the vowels /a/, /i/, and /u/ in order to determine vowel selection effects on analysis. Patients and Methods: Forty subjects (20 males and 20 females) with normal voices participated in recording. Traditional parameters of fundamental frequency, signal-to-noise ratio, percent jitter, and percent shimmer were calculated for the signals using CSpeech. Nonlinear dynamic parameters of correlation dimension and second-order entropy were also calculated.
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机译：目的通常在持续元音发声的记录上进行语音的声学分析。本研究对元音/ a /，/ i /和/ u /应用了扰动和非线性动力学分析，以确定元音选择对分析的影响。患者和方法：40名声音正常的受试者（20名男性和20名女性）参加了录音。使用CSpeech计算信号的基本频率，信噪比，抖动百分比和闪烁百分比等传统参数。还计算了相关维数和二阶熵的非线性动力学参数。
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