Aeroacoustics of Voice

描述（由申请人提供）：本研究的长期目标是建立广泛，准确和可靠的发声理论，这些理论可以用于建立精炼和适用的概念和方法，以帮助有语音问题的人。这一目标的必要性，必须开发，使用和完善广泛有效的发声模型，并量化生物力学，空气动力学和声学因素，控制喉功能和语音质量。这个应用程序的目的是建立一个坚实的理解的生物力学，运动学，空气动力学，和声带振荡，半喉发声，寄存器移位，和声带冲击动力学的声学。这一目标将通过实验和计算方法的独特组合来实现。在这项研究中，将使用三个免费模型的创新组合。这三个模型是：切除喉模型，机械喉模型，和有限元生物物理模型。这项工作的结果不仅将增强我们对正常发声的理解，而且将阐明声带病变如何发展以及声带麻痹等疾病如何破坏声带振动，这反过来又可以为改善嗓音疾病的手术和行为治疗提供见解。这一资助期的具体目标是：（1）建立声带振荡解耦控制机制;（2）建立半喉振荡的最佳条件;（3）建立胸音和假声音之间转换的控制机制;以及（4）确定影响潜在损伤性动态压力和内外组织的生物力学和空气动力学因素压力本研究项目的结果应提供显着的指导和发声的重要问题的理解，即，声带振荡，半喉发声，寄存器过渡的控制，并对声带的潜在破坏性的影响力。

DESCRIPTION (provided by applicant): The long-range objective of this research is to establish broad range, accurate, and reliable theories about phonation that can be useful in establishing refined and applicable concepts and approaches for helping people with voice problems. This goal, of necessity, must develop, use, and refine widely effective models of phonation, and quantify the biomechanical, aerodynamic, and acoustic factors that control laryngeal function and voice quality. The objective of this application is to establish a firm understanding of the biomechanics, kinematics, aerodynamics, and acoustics of vocal fold oscillation, hemilarynx phonation, register shift, and vocal fold impact dynamics. This objective will be met through a unique combination of experimental and computational methods. In this research, an innovative combination of three complimentary models will be used. The three models are: excised larynx model, a mechanical larynx model, and a finite-element biophysical model. The results of this work will not only enhance our understanding of normal phonation, but will elucidate how vocal lesions develop and how disorders such as vocal fold paralysis disrupt vocal fold vibration, which in turn could provide insight into improved surgical and behavioral treatment of voice disorders. The specific aims for this funding period are: (1) To establish the control mechanisms for decoupling vocal fold oscillation; (2) To establish optimal conditions for hemilarynx oscillation; (3) To establish the control mechanisms for transition between chest and falsetto registers; and (4) To establish the biomechanical and aerodynamic factors that influence the potentially damaging dynamic pressures and internal and external tissue stresses. The outcome of this research project should provide significant guidance and understanding of important issues in phonation, namely, the control of vocal fold oscillation, hemilarynx phonation, register transition, and potentially damaging impact forces on the vocal fold.