Engineers from the German institute Fraunhofer FKIE presented a prototype of a drone, which is designed for
“[Drones] can cover a large area ina short period of time - more than rescuers or trained dogs on the ground, Varela said. "If there is a collapsed building in the area, he can alert and help rescuers."
Unmanned aerial vehicles or drones are usuallyused for search and rescue operations during natural disasters. Most often, they take aerial photographs of structural damage. Some are equipped with thermal imaging for scanning bodies, while larger drones can deliver medical supplies and other items to people in isolated areas.
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Locate people withair acoustics is not easy. The auditory system must decode human cries and sounds and distinguish them from animal cries or wind noise. The device also detects patterns of sounds that are inherent in whistles, kicks and claps - actions with which people try to attract attention.
The engineers took these situations into account when creating the drone.They first trained him on the existing database of "impulsive" human sounds. The researchers then recorded their screams, knocks, and other sounds that might be inherent in people in distress. Researchers analyzed each sound frequency to find commonalities and used them to train AI.
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