5. Impactile interfaces
Acoustic technology can transform a simple pane of glass into an interface that hears better than the human ear, emits telephone-quality sound like a flat, transparent loudspeaker, and controls automations according to the location and intensity of an impact to its surface. The device is also a multisensory control peripheral for a PC.
5.1 Operating principle
The mechanical energy injected by a light impact on the surface of a pane of glass is propagated inside it in the form of wave packets to sensors glued around its perimeter, forming the vertices of a polyhedron. The differential propagation time of the waves between the various sensors is used to triangulate the position of the impact. The sensors use the physical principle of piezoelectricity to convert...
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Impactile interfaces
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