Source: Gizmodo
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.
Read More: Future Riot Shields Will Suffocate Protestors with Low Frequency Speakers
Cartoon by Bob Moran
