Human phonation analysis by 3d aero-acoustic computation

摘要

A computational method has been introduced describing the aerodynamics in a stiff larynx model. Different inflow conditions have been applied to give an insight in the resulting acoustic sound. By phase averaging of the fluid flow the turbulent component could be associated to the broadband sound, while the pulsating flow is responsible for the main frequencies. In a last computation, we have calculated the acoustic sound based on the measured inflow conditions (see Figure 2. A next step is to apply moving vocal folds, which thereby influence the fluid rate and turbulent flow.