BlueBoar on Nostr: Not sure if they can digitally or if part of the system is creating the noise ...

Not sure if they can digitally or if part of the system is creating the noise yourself but your comment reminded me of this article. https://www.sciencealert.com/humans-can-echolocate-like-bats-and-whales-and-we-ve-finally-figured-out-how-it-works