Sound Scattering and Its Reduction by a Janus Sphere Type
Figure 8
The directivity of the scattered far field pressure is plotted for when the sphere is in (a) free space, (b) its centre is 2.1 m away from a free surface, and (c) 2.1 m away from a hard ground. The wave frequency is 1500 Hz and the rest of the conditions are as in Figure 3.
