F-0810 Effect of Transglottal Pressure on Fundamental Frequency of Sustained Voice

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  • F-0810 声の基本振動数への声門上下圧力差の影響(S43-3 呼吸・循環系の数値シミュレーション)(S43 生体力学シミュレーション)

Abstract

In this paper the effect of the transglottal pressure on fundamental frequency of sustained voice is investigated using a two-dimensional flexible channel model of the vocal fold coupled with a one-dimensional unsteady flow model. The clinical measurement concerning this effect by other researchers shows that the mechanism involved in the vocal folds' vibration is different in a lower and a higher pitch range. We examine numerically the condition of mechanical properties of vocal folds which has the consistency with the experimental result. The result shows that there seems to exist a close relationship between the parameter values decided by numerical model and real larynx structure.

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