Titze I R
Department of Speech Pathology and Audiology, University of Iowa, Iowa City 52242.
J Acoust Soc Am. 1989 Feb;85(2):901-6. doi: 10.1121/1.397562.
The change in fundamental frequency with subglottal pressure in phonation is quantified on the basis of the ratio between vibrational amplitude and vocal fold length. This ratio is typically very small in stringed instruments, but becomes quite appreciable in vocal fold vibration. Tension in vocal fold tissues is, therefore, not constant over the vibratory cycle, and a dynamic tension gives rise to amplitude-frequency dependence. It is shown that the typical 2-6 Hz/cm H2O rise in fundamental frequency with subglottal pressure observed in human and canine larynges is a direct and predictable consequence of this amplitude-frequency dependence. Results are presently limited to phonation in the chest register.
发声时基频随声门下压力的变化是根据振动幅度与声带长度之间的比率来量化的。在弦乐器中，这个比率通常非常小，但在声带振动中却变得相当可观。因此，声带组织中的张力在振动周期内并非恒定不变，动态张力会导致振幅 - 频率依赖性。研究表明，在人类和犬类喉部观察到的基频随声门下压力典型地以2 - 6赫兹/厘米水柱的速率上升，是这种振幅 - 频率依赖性的直接且可预测的结果。目前的结果仅限于胸声区发声。
