Future Riot Shields Will Suffocate Protestors with Low Frequency Speakers

Tuesday, December 20, 2011
By Paul Martin

Gizmodo.com

It’s not the first crowd control tool to use sound waves, but Raytheon’s patent for a new type of riot shield that produces low frequency sound waves to disrupt the respiratory tract and hinder breathing, sounds a little scary.

Crowd control tools like the LRAD Sound Cannon emit bursts of loud and annoying sounds that can induce headaches and nausea. But Raytheon’s non-lethal pressure shield creates a pulsed pressure wave that resonates the upper respiratory tract of a human, hindering breathing and eventually incapacitating the target. The patent points out that the sound waves being generated are actually not that powerful, so while protestors might collapse from a lack of oxygen reaching their brains, their eardrums won’t be damaged in the process. Phew!

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