声带振动模式对其三层结构的敏感性：对发声计算建模的影响。
Sensitivity of vocal fold vibratory modes to their three-layer structure: implications for computational modeling of phonation.
机构信息
Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA.
出版信息
J Acoust Soc Am. 2011 Aug;130(2):965-76. doi: 10.1121/1.3605529.
Abstract
The sensitivity of the eigenmodes and eigenfrequencies of the human vocal fold to its three-layer structure is studied using finite-element modeling. The study covers a variety of three-dimensional vocal fold models ranging from an idealized, longitudinally uniform structure to a physiologically more realistic, longitudinally varying structure. Geometric parameters including the thickness of the ligament and cover layers as well as the ligament length are varied systematically. The results indicate that vocal fold vibratory modes are quite insensitive to the longitudinal variation in the thickness of the three layers as well as the variation in ligament length. However, significant overall changes in thickness of each layer can produce noticeable changes in these modes. The implications of these findings on computational modeling of phonation are discussed.
摘要
采用有限元建模方法研究了人体声带的本征模态和本征频率对其三层结构的敏感性。该研究涵盖了各种三维声带模型，范围从理想化的、纵向均匀的结构到更符合生理实际的、纵向变化的结构。系统地改变了包括韧带和覆盖层的厚度以及韧带长度在内的几何参数。结果表明，声带振动模式对三层结构的纵向变化以及韧带长度的变化不太敏感。然而，每层厚度的整体显著变化会导致这些模式的明显变化。这些发现对发音的计算建模的意义进行了讨论。
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