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.

On the night of December 4th, 2014, demonstrators filled the streets in protest of the grand jury's failure to indict Daniel Pantaleo for killing Eric Garner. Anika Edrei, Shay Horse, James Craven, ...

Minnesota State Patrol troopers used a powerful sound system first used by the military in Maple Grove, Minnesota, to ...

LRAD Corp., which makes long-range hailing devices for the military, said Thursday that it plans to spin off a portion of its business into a new publicly traded company. The San Diego company will ...

Occupy Wall Street supporters have blasted the New York Police Department’s use of Long Range Acoustic Devices to respond to the civil disobedience actions that sprang up throughout Manhattan on ...

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

RANCHO BERNARDO —- Deterring pirates with blasts ofear-splitting sound got American Technology Corp. a lot of welcomeattention. But when the company’s acoustic warning speakers aredeployed by law ...

I guess military tech always finds its way home. Pittsburgh city officials believe their police department’s use of a Long Range Acoustic Device (LRAD) at last week’s G20 protests was “the first time ...

Save this article to read it later. Find this story in your account’s ‘Saved for Later’ section. Demonstrators are reporting the NYPD’s use of Long Range Acoustic Devices (LRADs) against protesters ...

I guess military tech always finds its way home. Pittsburgh city officials believe their police department’s use of a Long Range Acoustic Device (LRAD) at last week’s G20 protests was “the first time ...