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Aerodynamic sound of a body in arbitrary, deformable motion, with application to phonation
Journal of Sound and Vibration ( IF 4.3 ) Pub Date : 2013-08-01 , DOI: 10.1016/j.jsv.2012.11.009
M S Howe 1 , R S McGowan
Affiliation  

The method of tailored Green's functions advocated by Doak (Proceedings of the Royal Society A254 (1960) 129 - 145.) for the solution of aeroacoustic problems is used to analyse the contribution of the mucosal wave to self-sustained modulation of air flow through the glottis during the production of voiced speech. The amplitude and phase of the aerodynamic surface force that maintains vocal fold vibration are governed by flow separation from the region of minimum cross-sectional area of the glottis, which moves back and forth along its effective length accompanying the mucosal wave peak. The correct phasing is achieved by asymmetric motion of this peak during the opening and closing phases of the glottis. Limit cycle calculations using experimental data of Berry et al. (Journal of the Acoustical Society of America 110 (2001) 2539 - 2547.) obtained using an excised canine hemilarynx indicate that the mechanism is robust enough to sustain oscillations over a wide range of voicing conditions.

中文翻译:

任意变形运动中身体的空气动力学声音,适用于发声

Doak 为解决气动声学问题而提倡的定制格林函数方法(Proceedings of the Royal Society A254 (1960) 129 - 145.)用于分析粘膜波对通过空气流的自持调制的贡献。浊音产生过程中的声门。维持声带振动的空气动力表面力的振幅和相位由与声门最小横截面积区域的流动分离控制,声门沿着其有效长度来回移动,伴随着粘膜波峰。在声门的打开和关闭阶段,通过该峰的不对称运动来实现正确的定相。使用 Berry 等人的实验数据进行极限循环计算。(美国声学学会杂志 110 (2001) 2539 - 2547。
更新日期:2013-08-01
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