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Long-range acoustic device

A long-range acoustic device (LRAD), acoustic hailing device (AHD), 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 as a method of crowd control, which has historically been known to cause permanent hearing damage over long periods, having an extremely high…

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Long-range acoustic device

Nodes209
Edges208
Triples2
Avg. degree1.99
Density0.009569
Components1

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lrad used police acoustic device use devices range sound systems system protests lrads city 2020 crowd long hailing department new

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SubjectPredicateObjectConfidenceSrc
bushfiresinstance ofThe Asia-Pacific website is focused on emergency management during natural disasters0.80text
evacuation ordersinstance ofhis department is getting the LRADs to enhance their communication capabilities be it with large crowds or for emergency announcements0.80text

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