Dejonckere P, Lebacq J
Arch Int Physiol Biochim. 1980 Oct;88(4):343-55. doi: 10.3109/13813458009092904.
Vocal fold length and subglottic pressure were measured both during the beginning and ending of phonation in five normal subjects. Whatever the type of vocalic attack, the subglottic pressure sine wave leads the vocal fold length sine wave by slightly less than 90 degrees. At the end of emission, the vibrator behaves like a damped harmonic oscillator; its damping factor is significantly smaller than values obtained from excised larynges. A model is proposed for the vocal vibrator, namely a damped harmonic oscillator which, once set into motion, is activated and maintained in oscillation by an extrinsic periodic force, the subglottic pressure, the phase lead of which is related to the damping factor.
在五名正常受试者发声的开始和结束阶段，均测量了声带长度和声门下压力。无论元音起音的类型如何，声门下压力正弦波均领先于声带长度正弦波，相位差略小于90度。在发声结束时，振动体的表现类似于阻尼简谐振子；其阻尼因子明显小于从切除的喉部获得的值。本文提出了一种声带振动体模型，即一个阻尼简谐振子，一旦开始运动，就由外部周期性力（声门下压力）激活并维持振荡，该外部周期性力的相位超前与阻尼因子有关。
