2 ms·
Holosonics.com, or a lot less comfortably, [LRAD](https://en.wikipedia.org/wiki/Long_Range_Acoustic_Device https://en.wikipedia.org/wiki/Long_Range_Acoustic_Dev
by bashinator 6y ago
Holosonics.com, or a lot less comfortably, [LRAD](https://en.wikipedia.org/wiki/Long_Range_Acoustic_Device https://en.wikipedia.org/wiki/Long_Range_Acoustic_Device)