Demonstrated Infrasonic Weapon
The U.S. Department of Defense (DOD) has demonstrated phased arrays of infrasonic emitters. The weapon usually consists of a device that generates sound at about 7 Hz. The output from the device is routed (by pipes) to an array of open emitters. At this frequency, armor and concrete walls and other common building materials allow sound waves to pass through, providing little defense. This presents logistic problems regarding operation of infrasonic weaponry without exposing operating personnel to the potentially damaging effects.
Physicist and researcher Jürgen Altmann, however, has suggested that infrasound "does not have the alleged drastic effects on humans" in his paper "Acoustic Weapons." While many sources make reference to military research into infrasonic weapons beginning with the work of Dr. Vladimir Gavreau, it is unclear as to whether or not these devices have potential use in conflict.
Read more about this topic: Sonic Weapon
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