Department of Phoniatrics and Pediatric Audiology, University Hospital Erlangen, Medical School, Bohlenplatz 21, 91054 Erlangen, Germany.
J Acoust Soc Am. 2010 Feb;127(2):1014-31. doi: 10.1121/1.3277165.
Human voice originates from the three-dimensional (3D) oscillations of the vocal folds. In previous studies, biomechanical properties of vocal fold tissues have been predicted by optimizing the parameters of simple two-mass-models to fit its dynamics to the high-speed imaging data from the clinic. However, only lateral and longitudinal displacements of the vocal folds were considered. To extend previous studies, a 3D mass-spring, cover-model is developed, which predicts the 3D vibrations of the entire medial surface of the vocal fold. The model consists of five mass planes arranged in vertical direction. Each plane contains five longitudinal, mass-spring, coupled oscillators. Feasibility of the model is assessed using a large body of dynamical data previously obtained from excised human larynx experiments, in vivo canine larynx experiments, physical models, and numerical models. Typical model output was found to be similar to existing findings. The resulting model enables visualization of the 3D dynamics of the human vocal folds during phonation for both symmetric and asymmetric vibrations.
人声源自声带的三维（3D）振动。在之前的研究中，通过优化简单两质量模型的参数来预测声带组织的生物力学特性，使其动力学与临床的高速成像数据相匹配。然而，之前的研究只考虑了声带的侧向和纵向运动。为了扩展之前的研究，我们开发了一个 3D 质量-弹簧、覆盖模型，该模型预测了声带整个内表面的 3D 振动。该模型由五个沿垂直方向排列的质量平面组成。每个平面包含五个纵向、质量-弹簧、耦合振子。该模型的可行性使用以前从离体人喉实验、体内犬喉实验、物理模型和数值模型中获得的大量动力学数据进行了评估。典型的模型输出与现有的研究结果相似。所得到的模型能够可视化人声带在对称和非对称振动时的 3D 动力学。
