LRAD information archive.

For the past couple of years sonic weapons called LRADs (Long Range Accoustic Devices) have been increasingly deployed against protestors in the United States (here is footage from Pittsburgh shot in 2009 (warning: remove your earphones!)). A step up from mere marketing tricks that make you suspect that you're going mad, these sonic weapons pump out enough sound pressure to cause permanant hearing damage at a distance of a couple of hundred feet. Earplugs don't work because the sound is loud enough to be conducted into one's inner ears through the bones of the skull. Getting behind hard cover probably …

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