In extreme cases, sonic weapons can cause nausea, dizziness, and even permanent damage. In this case, officials used it to ...

Minnesota State Patrol troopers used a powerful sound system first used by the military in Maple Grove, Minnesota, to communicate and disperse noisy protesters.

The City has agreed to pay $748,000 to settle a lawsuit brought by Black Lives Matter protesters who said the NYPD illegally targeted demonstrators with Long Range Acoustic Devices [LRAD] in 2014.

On a suburban street in Maple Grove, a device first built for battlefields and warships was pointed at a crowd of Minnesota protesters. The long-range acoustic system, sometimes described by critics ...

The NYPD must stop using deafening sound cannons to break up street demonstrations following a legal settlement reached Monday with five Black Lives Matter protesters. The city also must pay $748,000 ...

LRAD sells sound cannons to yacht owners as a means of keeping pirates from boarding. In 2005, an LRAD sound cannon staved off an attack by pirates on a five-star German-built cruise ship, called ...