Sound Scattering by a Flexible Plate Embedded on Free Surface
Figure 6
The effect of an optimised external uniform force as it is shown by the pressure amplitude differences between the fields reflected by the plate and free surface, and the free surface only. The sound frequencies and the hinged plate conditions are (a) 1500 Hz with no external force, (b) 1500 Hz with an external uniform force, (c) 3000 Hz with no external force and (d) 3000 Hz with an external force. The rest of the conditions are as in Figure 4.
