Lewis J R, Andreassen M L, Leeper H A, Macrae D L, Thomas J
Department of Otolaryngology, University of Western Ontario, Canada.
J Otolaryngol. 1993 Apr;22(2):113-7.
This investigation was designed to evaluate the relationship between aerodynamic measures of velopharyngeal competence and laryngeal function in individuals with repaired cleft palate. Twenty-seven cleft lip and palate or cleft palate individuals, between the ages of 4 and 16 years, were evaluated in an ENT clinic for assessment of vocal function. A commercially available aerodynamic (pressure/flow) system for evaluating velopharyngeal function was used to classify estimated opening of the velopharyngeal port during speech production. Aerodynamic measures of laryngeal function (transglottal pressure and airflow, and laryngeal airway resistance) were also collected. A computerized system for acoustic analyses of voice production was employed to determine vocal characteristics of pitch perturbation (jitter), amplitude perturbation (shimmer) and signal-to-noise ratio (SNR). The results suggested that the cleft speakers showed numerically larger measures of perturbation in the vocal signal, and greater laryngeal airway resistance than their normal controls. Subgroups of cleft palate speakers, based on their vocal dynamics, were proposed. Implications for medical and behavioral management for these subgroups are discussed.
本研究旨在评估腭裂修复个体中腭咽功能的空气动力学指标与喉功能之间的关系。27名年龄在4至16岁之间的唇腭裂或腭裂个体在耳鼻喉科诊所接受了嗓音功能评估。使用一种商用空气动力学（压力/流量）系统来评估腭咽功能，以对言语产生过程中腭咽口的估计开口进行分类。还收集了喉功能的空气动力学指标（跨声门压力和气流，以及喉气道阻力）。采用一种用于语音产生声学分析的计算机系统来确定音高扰动（抖动）、幅度扰动（闪烁）和信噪比（SNR）的嗓音特征。结果表明，腭裂患者在嗓音信号中的扰动指标在数值上比正常对照组更大，且喉气道阻力也更大。基于嗓音动力学提出了腭裂患者的亚组。讨论了这些亚组在医学和行为管理方面的意义。
