By using five microphones, a speaker, and a sophisticated new echolocation algorithm, researchers have successfully built a full 3D image of a cathedral’s insanely complex interior. The same technology could someday allow humans to navigate in total darkness.
Top image: Fine Art America.
Bats, dolphins, and some visually impaired humans use reflected sound to create a mental 3D image of their environment. It’s called echolocation, and it’s a principle that was recently used by a team of researchers at the Swiss Federal Institute of Technology in Lausanne to map the interior of rooms.