PDF(Pubmed)
Abstract：
This study was a modest beginning to determine dominance and entrainment between three soft tissues in the larynx that can be set into flow-induced oscillation and act as sound sources. The hypothesis was that they interact as coupled oscillators with observable bifurcations as energy is exchanged between them.
The true vocal folds, the ventricular (false) folds, and the aryepiglottic folds were part of a soft-walled airway that produced airflow for sound production. The methodology was computational, based on a simplified Navier-Stokes solution of convective and compressible airflow in a variable-geometry airway.
Three serially connected sources could all produce flow-induced self-oscillation with soft wall tissue and small cross-sectional area. When the glottal cross-sectional areas were similar, bifurcations such as subharmonics, delayed voice onset, and aphonia occurred in the coupled oscillations.
Closely spaced sound sources in the larynx are highly interactive. They appear to entrain to the source that has the combined advantage of small cross-sectional glottal area and proximity to a downstream vocal tract that supports oscillation with acoustic inertance.
The true vocal folds, the ventricular (false) folds, and the aryepiglottic folds were part of a soft-walled airway that produced airflow for sound production. The methodology was computational, based on a simplified Navier-Stokes solution of convective and compressible airflow in a variable-geometry airway.
Three serially connected sources could all produce flow-induced self-oscillation with soft wall tissue and small cross-sectional area. When the glottal cross-sectional areas were similar, bifurcations such as subharmonics, delayed voice onset, and aphonia occurred in the coupled oscillations.
Closely spaced sound sources in the larynx are highly interactive. They appear to entrain to the source that has the combined advantage of small cross-sectional glottal area and proximity to a downstream vocal tract that supports oscillation with acoustic inertance.
摘要：
■这项研究是一个适度的开始，目的是确定喉中三个软组织之间的优势和夹带，这些软组织可以设置为流动诱导的振荡并充当声源。假设是，当能量在它们之间交换时，它们作为耦合振荡器与可观察到的分叉相互作用。
■真正的声带，心室（假）褶皱，会厌褶皱是软壁气道的一部分，该气道产生气流以产生声音。方法是计算的，基于可变几何气道中对流和可压缩气流的简化Navier-Stokes解决方案。
■三个串联连接的源都可以产生具有软壁组织和小横截面积的流动诱导的自激振荡。当声门横截面积相似时，分支，如次谐波，声音延迟发作，和失音发生在耦合振荡中。
■喉中紧密间隔的声源具有高度交互性。它们似乎夹带到声源，具有较小的横截面声门面积和靠近下游声道的综合优势，该声道支持声惯性振荡。
■真正的声带，心室（假）褶皱，会厌褶皱是软壁气道的一部分，该气道产生气流以产生声音。方法是计算的，基于可变几何气道中对流和可压缩气流的简化Navier-Stokes解决方案。
■三个串联连接的源都可以产生具有软壁组织和小横截面积的流动诱导的自激振荡。当声门横截面积相似时，分支，如次谐波，声音延迟发作，和失音发生在耦合振荡中。
■喉中紧密间隔的声源具有高度交互性。它们似乎夹带到声源，具有较小的横截面声门面积和靠近下游声道的综合优势，该声道支持声惯性振荡。
