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声带几何形状对人类的发声起着重要作用．声门腔内准稳态流场的分布取决于声门的形状、尺寸和直径．使用具有九对对称声门(矩形及5°,10°,20°和40°收敛角与发散角)的喉部树脂玻璃模型来研究不同声门形状下声门腔内压力、速度场和声门阻抗的变化以及它们对发声的影响,同时利用补偿有限元算法对实验数据进行了验证．结果指出,较大的声门收敛角会降低最小声门直径上游处的压力,同时使速度升高．但这种压力速度变化情况在最小声门直径处则相反．发散角的压力和气流阻抗分布曲线说明最“有效率”的声门发散角在10°左右．结果同时指出,声门几何不仅与发声参量(尤其是发声效率)有密切关系,同时还对发声基础研究、语言声学、艺术嗓音和喉病检测等领域有重要意义．
Vocal cord geometry plays an important role in the human voice. The distribution of quasi-steady-state flow field in the glottic cavity depends on the shape, size and diameter of the glottis. A throat plexiglass model with nine pairs of symmetrical glottis (rectangular and convergent and divergent angles of 5 °, 10 °, 20 °, and 40 °) was used to study the effects of different glottis shape on the glottis cavity pressure, velocity field and sound The change of the door resistance and their influence on the sounding, at the same time, the experimental data are validated by the compensation finite element algorithm. The results indicate that a larger glottis convergence angle reduces the pressure upstream of the minimum glottal diameter while increasing the speed. However, this pressure rate of change in the minimum glottal diameter at the opposite. Divergence angle pressure and airflow impedance distribution curve shows the most “efficient” glottis divergence angle of about 10 °. The results also point out that the glottic geometry is not only closely related to the vocal parameters (especially the vocal efficiency), but also has important meanings in the basic research of vocalization, speech acoustics, artistic voice and laryngeal disease detection.