Figure 7
From: Delivering Sound Energy along an Arbitrary Convex Trajectory

Accelerating acoustic beam (dB) along a circular trajectory with a radius of 0.32 m (f = 4 kHz).
(a) Simulated sound field distribution without scattering effect. (b) Experimental sound field distribution without scattering effect. (c) Simulated sound field distribution with scattering effect. (d) Experimental sound field distribution with scattering effect. The black dashed circle in (c) and (d) depicts the rigid sphere with radius 0.1 m. The measurement range is outside the white squares in (c) and (d); no data are measured inside the white squares.