3 ms·

There is a video on youtube that explains how to do it with ultrasonic speakers; https://www.youtube.com/watch?v=aBdVfUnS-pM https://www.youtube.com/watch?v=aBd

by zaarn 8y ago

There is a video on youtube that explains how to do it with ultrasonic speakers; https://www.youtube.com/watch?v=aBdVfUnS-pM https://www.youtube.com/watch?v=aBdVfUnS-pM