Fig. 1: Channel conditioning for acoustic communications.
From: Optimizing multi-user indoor sound communications with acoustic reconfigurable metasurfaces
a Acoustic channels in a room are generically coupled, so each microphone (Mic.) captures the sound from both loudspeakers (Spk.). b Independent, isolated channels can be achieved by wavefield shaping using the acoustic reconfigurable metasurfaces (ARMs), such that loudspeakers and microphones communicate without interference from others.
