On the acoustical relevance of supraglottal flow structures to low-frequency voice production.
On the acoustical relevance of supraglottal flow structures to low-frequency voice production.
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DOI：
10.1121/1.3515838
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发表时间：
2010-12
期刊：
影响因子：
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通讯作者：
Zhaoyan Zhang;Juergen Neubauer
中科院分区：
文献类型：
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作者：
Zhaoyan Zhang;Juergen Neubauer
声门上流表现出许多复杂的现象，如再循环、喷流不稳定、喷流附着在一个声带壁上、喷流扑动以及向湍流的过渡等。这些流动结构与低频声音产生的声学相关性是通过使用圆柱体干扰声门上的流场并观察其对所产生的声压场的影响来评估的。尽管由于圆柱体的存在，声门上的流场发生了显著的变化，但仅观察到声压幅度和频谱形状的微小变化。讨论了这些结果对我们理解发声物理和建立发声模型的意义。
The supraglottal flow exhibits many complex phenomena such as recirculation, jet instabilities, jet attachment to one vocal fold wall, jet flapping, and transition to turbulence. The acoustical relevance of these flow structures to low-frequency voice production was evaluated by disturbing the supraglottal flow field using a cylinder and observing the consequence on the resulting sound pressure field. Despite a significantly altered supraglottal flow field due to the presence of the cylinder, only small changes in sound pressure amplitude and spectral shape were observed. The implications of the results on our understanding of phonation physics and modeling of phonation are discussed.