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2. Long-range acoustic device - Wikipedia

   en.wikipedia.org/wiki/Long-range_acoustic_device

   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 meter ...

3. Directed-energy weapon - Wikipedia

   en.wikipedia.org/wiki/Directed-energy_weapon

   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.

4. Genasys - Wikipedia

   en.wikipedia.org/wiki/Genasys

   Genasys Inc. is based in San Diego, California.Its long-range acoustic device (LRAD) products are used for long-range acoustic hailing and mass notification. Its software-as-a-service product suite, the Genasys Protect Platform, that includes ACOUSTICS, ALERT, CONNECT (formerly Evertel), and EVAC (formerly Zonehaven), is used for emergency alerting, notifications, evacuations, secure ...

5. Active Denial System - Wikipedia

   en.wikipedia.org/wiki/Active_Denial_System

   Active Denial System. The Active Denial System (ADS) is a non-lethal directed-energy weapon developed by the U.S. military, [2] designed for area denial, perimeter security and crowd control. [3] Informally, the weapon is also called the heat ray[4] since it works by heating the surface of targets, such as the skin of targeted human beings.

6. Understanding the LRAD, the “Sound Cannon” Police Are Using ...

   www.aol.com/news/understanding-lrad-sound-cannon...

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7. Sonic weapon - Wikipedia

   en.wikipedia.org/wiki/Sonic_weapon

   A long-range device (LRAD) in use on the USS Blue Ridge. Sonic and ultrasonic weapons (USW) are weapons of various types that use sound to injure or incapacitate an opponent. Some sonic weapons make a focused beam of sound or of ultrasound; others produce an area field of sound. As of 2023 military and police forces make some limited use of ...

8. SOSUS - Wikipedia

   en.wikipedia.org/wiki/SOSUS

   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.

9. Non-lethal weapon - Wikipedia

   en.wikipedia.org/wiki/Non-lethal_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.