Mathematicians from Purdue and the Technical University of Munich (TUM) have been working on a signal processing method that uses four micr...
![Using four mics and a speaker, drones can echolocate like bats](https://static.techspot.com/images2/news/ts3_thumbs/2020/03/2020-03-10-ts3_thumbs-fd6.jpg)
Mathematicians from Purdue and the Technical University of Munich (TUM) have been working on a signal processing method that uses four microphones and a speaker attached to a drone to “sense” the areas around the craft. The speaker emits a sound and mics attached to the four corners of the...
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