A QUANTITATIVE MODEL OF VOICE F-0 CONTROL
A QUANTITATIVE MODEL OF VOICE F-0 CONTROL
复制标题
DOI：
10.1121/1.408465
复制
发表时间：
1994-02-01
影响因子：
2.4
通讯作者：
FARLEY, GR
中科院分区：
文献类型：
--
作者：
FARLEY, GR
A mathematical model of the larynx, based on biomechanical principles, is described. Components represented include two cartilage elements (cricoid with locked arytenoids, and thyroid), three muscles (thyroarytenoid [TA], cricothyroid pars rectus [CTr], and cricothyroid pars oblique [CTo]), and two ligaments (cricothyroid and vocal ligaments), as well as subglottal pressure (P-S) For any combination of muscle activities and P-S level, equilibrium positions and tensions could be calculated for components in the system. The tensions and lengths of vocal fold elements were then used to calculate fundamental frequency (F-0) of vocal fold vibration. Systematic variation of model muscle activation and P-S patterns allowed study of the behavior of the model. TA activity tended to shorten the vocal folds; increased levels of CTr and CTo activity, and P-S, had the opposite effect. Increased activity of any muscle tended to increase vocal fold tension, while P-S increases were mainly ineffective. F-0 was generally increased by increased CTr, CTo, and P-S values. However, TA activity had a strongly nonmonotonic effect on F-0. Best control of F-0 could be achieved only by a process of cocontraction of all muscles at low frequencies, followed by sustained contraction of CTr and CTo with decreasing TA activity for F-0's increasing above this low-frequency range. These results are discussed in terms of their possible implications for normal and abnormal voice production, and as a set of constraints for neural modeling efforts.
