人类喉管状三维模型中发声动力学的计算建模。
Computational modeling of phonatory dynamics in a tubular three-dimensional model of the human larynx.
机构信息
Department of Mechanical Engineering, Johns Hopkins University, 126 Latrobe Hall, 3400 North Charles Street, Baltimore, Maryland 21218, USA.
出版信息
J Acoust Soc Am. 2012 Sep;132(3):1602-13. doi: 10.1121/1.4740485.
Simulation of the phonatory flow-structure interaction has been conducted in a three-dimensional, tubular shaped laryngeal model that has been designed with a high level of realism with respect to the human laryngeal anatomy. A non-linear spring-based contact force model is also implemented for the purpose of representing contact in more general conditions, especially those associated with three-dimensional modeling of phonation in the presence of vocal fold pathologies. The model is used to study the effects of a moderate (20%) vocal-fold tension imbalance on the phonatory dynamics. The characteristic features of phonation for normal as well as tension-imbalanced vocal folds, such as glottal waveform, glottal jet evolution, mucosal wave-type vocal-fold motion, modal entrainment, and asymmetric glottal jet deflection have been discussed in detail and compared to established data. It is found that while a moderate level of tension asymmetry does not change the vibratory dynamics significantly, it can potentially lead to measurable deterioration in voice quality.
已经在一个三维管状喉模型中进行了发声流固相互作用的模拟，该模型在人体喉部解剖结构方面具有高度的逼真度。还实现了基于非线性弹簧的接触力模型，目的是在更一般的条件下表示接触，特别是在存在声带病变的情况下进行三维发声建模时的接触条件。该模型用于研究中度（20%）声带张力失衡对发声动力学的影响。对正常和张力失衡的声带的发声特征，如声门波、声门射流演化、黏膜波型声带运动、模态激发和非对称声门射流偏折进行了详细讨论，并与已有数据进行了比较。结果发现，尽管中等程度的张力不对称不会显著改变振动动力学，但它可能导致可测量的音质恶化。
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