Kitajima K, Tanaka K
Department of Otolaryngology, Shiga University of Medical Science, Otsu, Japan.
J Voice. 1995 Dec;9(4):424-8. doi: 10.1016/s0892-1997(05)80205-x.
This study was intended to evaluate the stiffness of the vocal folds noninvasively. As a first step, the relationship between vocal fundamental frequency (F0) and intraoral pressure (P0) was investigated. F0 was recorded during production of forced P0 changes in three men and four women while they uttered sustained vowels. The pressure changes were applied by closing a valve mounted on a mouthpiece. Changes in F0 as a function of changes in P0 (dF0/dP0) were then measured. The values of dF0/dP0 varied with F0 in a manner inherent to each subject. The relationship between dF0/dP0 and F0 was found to have a potential benefit for the evaluation of stiffness at a specific length of vocal fold.
本研究旨在无创评估声带的刚度。第一步，研究了嗓音基频（F0）与口腔内压力（P0）之间的关系。在三名男性和四名女性发出持续元音时，记录了他们在强制改变P0过程中的F0。通过关闭安装在吹口上的阀门来施加压力变化。然后测量F0随P0变化的函数（dF0/dP0）。dF0/dP0的值随F0变化，且因个体而异。发现dF0/dP0与F0之间的关系对于评估特定长度声带的刚度具有潜在益处。
