![]() ![]() After the NYPD used a 100X model LRAD during protests over the death of Eric Garner, a group of plaintiffs filed a lawsuit against the city, alleging that the use of the device caused “physical injuries, such as migraines, sinus pain, dizziness, facial pressure, ringing in ears, and sensitivity to noise.” Writing for The Conversation, Professor Ian McLoughlin says that “When on high power, the effects are like a ‘punch in the guts’, ranging from nausea to involuntary evacuation of the bowels.”Īn ongoing lawsuit against the City of New York involves the use of an LRAD 100X model, the kind typically used by police. At the recommended distances, the audio output of the LRAD 100X and LRAD 450XL is similar to police and fire sirens at close range.” Can an LRAD be used as a weapon?ĭespite Genasys’ insistence that LRAD is not a weapon, the technology has a reputation as a “sonic cannon” capable of inflicting bodily harm. The company also said “The maximum voice output of the 100X is 131 decibels (dB) at just one meter from the system” and that “LRAD voice broadcasts follow the inverse square law, which teaches that for every doubling of the distance from an audio source, sound pressure levels diminish by 50% (6 dB). Training for the systems is contrary to such use,” adding that “These systems enable police to clearly communicate during emergency situations.” When we reached out to Genasys to ask if LRAD could be used as a weapon, the company told Digital Trends that “LRAD systems are voice communication systems, not weapons. Ships often use them to hail distant vessels, and in 2005, a cruise ship used an LRAD device to help repel pirates, with Der Spiegel descr ibing the device as a “sonic cannon … that beams hellishly loud noise that is deafening but not lethal.” LRAD devices have been in use for more than a decade. According to representatives from Genasys, an LRAD device broadcasts sound in a 30-degree beam. The sound produced by an LRAD is highly directional. ![]() ![]() Acoustic device deters enemies with ear-splitting noise ![]()
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