Usually it's higher frequencies so it's directed. See: "LRADs and Sound Cannons Are NOT Safe. Here's How To Minimize Their Effects. " https://www.youtube.com/

Usually it's higher frequencies so it's directed. See: "LRADs and Sound Cannons Are NOT Safe. Here's How To Minimize Their Effects. " https://www.youtube.com/watch?v=3sqIvak-4Ek https://www.youtube.com/watch?v=3sqIvak-4Ek