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A long-range acoustic device (LRAD), acoustic hailing device (AHD) or sound cannon is a specialized loudspeaker that produces sound at high power for communicating at a distance. It has been used as a method of crowd control , which has caused permanent hearing damage , having an extremely high decibel capacity (up to 160 dB measured at one ...
A long-range acoustic device produces a 30 degree cone of audible sound in frequencies within the human hearing spectrum (20 - 20000 Hz). An LRAD was used by the crew of the cruise ship Seabourn Spirit in 2005 to deter pirates who chased and attacked the ship. [ 3 ]
The Long Range Acoustic Device (LRAD) is an acoustic hailing device developed by Genasys (formerly LRAD Corporation) to send messages and warning tones over longer distances or at higher volume than normal loudspeakers, and as a non-lethal directed-acoustic-energy weapon.
The Long Range Acoustic Device (LRAD) is an acoustic hailing device developed by LRAD Corporation to send messages and warning tones over longer distances or at higher volume than normal loudspeakers. LRAD systems are used for long-range communications in a variety of applications [53] including as a means of non-lethal, non-kinetic crowd control.
The first modern device for air acoustic use was created in 1998, [1] and is now known by the trademark name "Audio Spotlight", a term first coined in 1983 by the Japanese researchers [2] who abandoned the technology as infeasible in the mid-1980s.
TGI Fridays said in a statement that fallout from the Covid-19 pandemic was the “primary driver of our financial challenges” and that it will use the process to “explore strategic ...
Meanwhile, Project Jezebel and Project Michael focused on studying long range acoustics in the ocean. [ 1 ] [ 3 ] [ 18 ] From 2–19 January 1952 the British cable layer Alert installed the first full sized, 1,000 ft (304.8 m) long, forty transducer element operational array in 240 fathoms (1,440.0 ft; 438.9 m) off Eleuthera in the Bahamas.
6 Potential Long-Term Effects of Ozempic. You may have heard about — or maybe even experienced — the short-term side effects of Ozempic® — such as nausea, vomiting, constipation, and diarrhea.
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