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Drone will find a person by voice

16.06.2021

German scientists from the Fraunhofer Society have created a drone that locates a person by tracking their cry. The technology will help rescuers find survivors during natural disasters, building collapses and other emergencies.

“Drones from the air can cover a larger area in a shorter period of time than rescuers or dogs from the ground. Drones can get to places where people and animals cannot,” said Macarena Varela, lead project engineer.
At the first stage of development, scientists recorded screams, tapping and other sounds that victims can make. Then artificial intelligence was trained on this audio.

The software has been tuned to filter out extraneous noise: the wind, the rumble of a helicopter, the buzz of the drone itself. To record sound, the drone was equipped with the same microphone that is used in smartphones.

Tests in the open field were successful. The drone caught the scream and in a few seconds determined where the person was. Now the scientists plan to equip the drone with a higher-frequency microphone so that it can "hear" sounds at greater distances.

Now during search and rescue operations, drones mainly take aerial photographs. Some - help to search for people using a thermal imager. Larger devices deliver medicines and products to areas cut off from civilization.

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The Joint Research Center under the European Commission summed up the intermediate results of the development of solar energy. According to his report, it has entered a new phase - it has become a real industry.

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Such rapid growth is facilitated by the introduction of new environmental protection standards and maneuvers with electricity tariffs.

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