The system can tell the difference between echoes rebounding off walls for the first or second time, and can establish a unique echo “signature” for each wall
EPFL's system in use at the Lausanne Cathedral in Switzerland
Creating a 3D map of a room could someday be as simple as randomly placing four microphones within the space, then snapping your fingers. Researchers from Switzerland’s EPFL (École Polytechnique Fédérale de Lausanne/Swiss Federal Institute of Technology) have recently done so on a limited scale, and are now excited about the technology’s possible applications.
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