Toposens drew inspiration from bats for its low-cost sensors
 

Stick with us here for a second: if you're building a robot or an autonomous car, you're going to need some sensors to help your creation "see" what's around it. 3D-sensing cameras will do the trick, as will laser-based systems, but German startup To...

https://www.engadget.com/2019/01/09/...sound-sensors/