AEROACOUSTICS OF VOICE

描述（改编自研究者摘要）： 本研究的目的是发展一种理论， 声带运动，喉气流和气压，以及产生 以及声道中的声信号的传播。 这一理论将 扩展我们的知识远远超出了线性源滤波器理论， 半个世纪来一直是语音科学的中流砥柱。 模型 发声机制将继续发展，这将导致 预测方程和直观的插图，导致更深入的临床 了解正常和异常的发声过程。 这项研究将 使用三种互补的发声模型--离体犬 喉，人工振动机械喉，和计算 模型 这段资助期的具体目标是：（1）制定一个 脉动气流和声波传播的计算机模拟 声带和声门气道模型;（2）量化湍流， 声门流及其声学效应;（3）参数化 喉内压力-流量关系;（4）探讨 声门内收和声带几何形状对发声效率的影响 （5）探讨喉的左右不对称性对喉功能的影响。 声带（几何或机械）对空气动力学和声学 输出的喉;和（6）使用先前开发的计算机模型， 发声，以对比主动与被动特性的影响， 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.