Alipour F, Scherer R C, Finnegan E
Department of Speech Pathology and Audiology, Wendell Johnson Speech and Hearing Center, University of Iowa, Iowa City 52242-1012, USA.
J Voice. 1997 Jun;11(2):187-94. doi: 10.1016/s0892-1997(97)80077-x.
Pressure-flow relationships were obtained for five excised canine larynges. Simultaneous recordings were made of average subglottal pressure, average air flow, and the electroglottograph at various levels of adduction and vocal fold lengths. The level of adduction was controlled by positioning the arytenoid cartilages via laterally imbedded three-prong attachments and by the use of intra-arytenoid shims. Adduction was quantified by measuring the vocal process gap. Results indicated a linear pressure-flow relationship within the experimental range of phonation for each level of adduction. Differential glottal resistance increased as the vocal process gap was reduced. A model is presented for the differential resistance as a hyperbolic function of vocal process gap. The pressure-flow relationship and the model can be used in computer simulations of speech production and for clinical insight into the aerodynamic function of the human larynx.
获得了五个切除的犬喉的压力-流量关系。在不同的内收程度和声襞长度水平下，同时记录了平均声门下压力、平均气流和电声门图。通过侧向植入的三叉附件定位杓状软骨并使用杓状软骨内垫片来控制内收程度。通过测量声带突间隙对内收进行量化。结果表明，在每个内收水平的发声实验范围内，压力-流量关系呈线性。随着声带突间隙减小，声门微分阻力增加。提出了一个模型，将微分阻力表示为声带突间隙的双曲线函数。压力-流量关系和该模型可用于语音产生的计算机模拟以及对人类喉气动功能的临床洞察。
