AEROACOUSTICS OF VOICE

描述(改编自《调查者摘要》)：远景 这项研究的目的是发展一种相互作用的理论 声带运动、喉部气流和气压，以及 以及声学信号在声道中的传播。这一理论将 将我们的知识远远扩展到线性源-过滤器理论之外，该理论具有 半个世纪以来一直是语音科学的中流砥柱。模型 发声的机制将继续发展，这将导致 预测方程式和可视化插图，可深入临床 洞察正常和异常的发音过程。这项研究将是 使用三种互补发音模型--离体犬 喉，一种人工振动机械喉，以及一种计算 模特。这个资助期的具体目标是：(1)发展一个 室内脉动气流和声波传播的计算机模拟 声道和声门的模型；(2)对声道内的湍流进行量化。 声门血流及其声学效应；(3)声门血流参数 喉部压力-流量关系的研究；(4)探讨喉部压力-流量关系的临床意义。 声门内收和声带几何形状对声学发声效率的影响 (5)研究左右不对称对喉部结构的影响。 声带褶皱(几何或机械)对空气动力学和声学的影响 喉部的输出；以及(6)使用先前开发的 发声，以对比主动和被动属性的影响 声带组织的空气动力学、运动学和声学特性 发声。

DESCRIPTION (Adapted from the Investigator's Abstract): The long-range objective of this research is to develop a theory of the interactions among vocal fold motion, laryngeal airflows and air pressures, and the generation and propagation of acoustic signals in the vocal tract. This theory will extend our knowledge well beyond the linear source-filter theory, which has been the mainstay of speech and voice science for half a century. Models of the mechanics of phonation will continue to be developed that will result in predictive equations and visual illustrations that lead to deeper clinical insight into normal and abnormal phonatory processes. The research will be conducted using three complementary phonatory models --excised canine larynges, an artificial vibrating mechanical larynx, and a computational model. The specific aims for this funding period are: (1) To develop a computer simulation of pulsatile airflow and acoustic wave propagation in the models of vocal tract and glottal airway; (2) To quantify turbulence in the glottal flow and its acoustic effects; (3) To parameterize the pressure-flow relationship in the larynx; (4) To investigate the effect of glottal adduction and vocal fold geometry on the acoustic vocal efficiency of the larynx; (5) To investigate the effects of left-right asymmetry of the vocal folds (geometrical or mechanical) on the aerodynamic and acoustic output of the larynx; and (6) Using a previously developed computer model of phonation, to contrast the effects of active versus passive properties of vocal fold tissue on aerodynamic, kinematic, and acoustic characteristics of phonation.