2 ms·
There is a video of a guy shouting into a can which was changing the pressure of a piezo ... I think they picked it up in the shack but didn't mess with it much
by th0ma5 2y ago
There is a video of a guy shouting into a can which was changing the pressure of a piezo ... I think they picked it up in the shack but didn't mess with it much more. Completely passive I think.
- shagie 2y agohttps://en.wikipedia.org/wiki/The_Thing_(listening_device) https://en.wikipedia.org/wiki/The_Thing_(listening_device)