Prototype Device Redirects Sound

Prototype Device Redirects Sound
A prototype device able to redirect sound could thwart eavesdroppers or magnify particular sounds.

The device was created by teams from the University of Nebraska-Lincoln and Peking University using a deceptively simple 32-channel design. The vertical channels are attached to resonators that can be adjusted by extending or retracting horizontal sliders, which in turn narrows or widens the pipes to redirect the sound waves dynamically, as they move over the surface of the device.

According to the team, the device could let users change the ‘dummy location’ of an acoustic signal in real-time, make an object sound like it is moving, or focus sound waves in a particular, narrow area.

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