Inferno Sonic Barrier
- - photo via technovelgy.com
The Inferno sound barrier device sounds like a very loud siren; the sound fills a defined area. People within the area experience vertigo and nausea, and feel compelled to leave.
The device outputs sound energy at four frequencies between 2 and 5 kHz. The combination of these frequencies produces its unusual effects.
Inferno has sold several of the devices, one to Russian nuclear weapons storage facility. The idea is that the device could be used to define an area in which human beings could not enter.
From technovelgy.com
