Acoustic harassment device
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Acoustic harassment and acoustic deterrents are technologies used to keep animals and in some cases humans away from an area. Applications of the technology are used to keep marine mammals away from a
An acoustic pinger (active sonar) used to repel cetaceans (including dolphins and porpoises) away from fishing nets
Law enforcement officer holding a Hypershield, an acoustic hailing device used for crowd and riot control
One use of LRADs (long range audio devices) is deploying them to prevent people from entering line of fire areas
Long-range acoustic device
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A long-range acoustic device, acoustic hailing device, or sound cannon is a specialized loudspeaker and sound weapon that produces sound at high power for communicating at a distance. It has been used
Acoustic harassment device
…loud music was broadcast. Devices utilising the deterioration of hearing with age have been deployed to drive younger people away, e.g. The Mosquito. Acoustic Hailing Device The Mosquito…
An NYPD LRAD on top of a police humvee outside the 2004 Republican National Convention, hosted in Madison Square Garden in New York City
US Navy Ship with LRAD system aboard, 2010
An LRAD operator wearing hearing protection
An NYPD officer stands ready with the LRAD 500X at an Occupy Wall Street protest on November 17, 2011, near the city hall.