Figure 6
From: Three-dimensional broadband acoustic illusion cloak for sound-hard boundaries of curved geometry
Experimental setup.
(a) The schematic of the experimental setups used to map the acoustic field near the cloak. The mapped region is indicated together with the sound source. (b,c) The photo of (b) the whole measuring system and (c) the prototype of cloak with one side of the shell is taken off to show the interior structure. Inset: zoom-in view of the perforated sheets.
