Furthermore, the compactness of system ensures high information density crucial for acoustics-based applications. ![]() The undesired channel crosstalk, conventionally reduced via time-consuming postprocessing, is virtually suppressed by using a metamaterial layer as purely-passive demultiplexer with high spatial selectivity. To overcome the current limitations in information transfer capacity, here we propose and experimentally validate a mechanism using multipath sound twisting to realize real-time high-capacity communication free of signal-processing or sensor-scanning. ![]() Speeding up the transmission of information carried by waves is of fundamental interest for wave physics, with pivotal significance for underwater communications.
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