Sonic warfare: U.S. police admit they trained a ‘spotlight of sound’ louder than a jet engine on G20 rioters
DAILY MAIL, 2Oct09: Critics have slammed American police officers after they trained an ear-splitting ‘spotlight of sound’ on G20 protesters in Pittsburgh last week.
The device can beam ‘unbearable’ alarm tones and voice commands to nearly two miles away. To a person standing three feet in front of it, it is louder than a jet engine.
The device, called a Long Range Acoustic Device (LRAD), concentrates sound in a 30- or 60-degree cone. … The volume measures 140-150 decibels three feet away – louder than a jet engine – but dissipates with distance.
