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...

that was generating infrasound of 18.9 Hz, 0.3 Hz, and 9 Hz. A long-range acoustic device (LRAD) produces a 30 degree cone of audible sound in frequencies...

The Long Range Acoustic Device (LRAD) is an acoustic hailing device developed by LRAD Corporation to send messages and warning tones over longer distances...

away, e.g. The Mosquito. Acoustic Hailing Device The Mosquito Long Range Acoustic Device (LRAD) Sonic weapon Directional sound Bird scarer § auditory scarers...

based in San Diego, California. Its long-range acoustic device (LRAD) products are used for long-range acoustic hailing and mass notification. Its...

be developing various plasma weapons. The Long Range Acoustic Device (LRAD) is an acoustic hailing device developed by Genasys (formerly LRAD Corporation)...

revealed that federal officials had explored the use of the device and the Long Range Acoustic Device to disperse civilians protesting outside the White House...

ordered the new MBDA TESEO MK/2E heavy-duty missile (TESEO "EVO"), a long-range anti-ship missilewith also strategic land attack capability. The missile...

equipped with the EDO Corporation active low frequency towed sonar to enable long range submarine detection and classification, as well as EuroTorp A244/S Mod...

and electric tasers. In some cases, riot squads may also use Long Range Acoustic Devices, water cannons, armoured fighting vehicles, aerial surveillance...