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

LRAD sound weapons at protests use focused acoustic beams up to 162 decibels that cause permanent hearing damage, but distance and industrial earplugs provide effective protection.

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.

During protests in the USA, security authorities use LRAD systems for announcements and crowd control. How do these "sound cannons" work?

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 ...

Since moving to Austin in 1980, Jim Ellin­ger has attended more demonstrations Downtown than he cares to remember. The 70-year-old citizen journalist typically stakes out the periphery of a gathering, ...

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 ...

American Technology Corporation (ATC) (NASDAQ:ATCO), announced that its LRAD 1000X directed sound system was used by the Japanese Maritime Self-Defense Force to help prevent a pirate attack on a ...