lrad sound cannon for sale

systems. Finally Sells Japan Tomahawk Missiles, Russia Says Its 'Satan-2' Missile Will Deploy Soon, Russias New Warhead Is an Engine of Destruction, The Weapons Ukraine Needs to Turn Back Russia. Inside a room may be more effective depending on objects that will absorb the output rather than reflect it. LRAD 300X Long Range Acoustic Device Kit Long Range Communications Capability Condition: Used "Kit is in overall good condition and comes with the components pictured." Quantity: Out of Stock / 6 sold Price: US $7,999.99 $384.06 for 24 months with PayPal Credit* Add to Watchlist Shipping: US $95.00Standard Shipping. What surface are you using the unit on gravel, dirt road, finished concrete, wood floor? Horrible, nauseating pain hit my body, he tells Popular Mechanics, and then I realized it was sound. These weapons project a highly directional sound beam and have been used to "discourage" Somali Pirates when they attack cruise ships. December 17, 2014, 7:15am. Created for the U.S. military after the terrorist attack on the USS Cole in 2000, LRADs were designed as acoustic weapons meant to repel anyone exposed to them. This design simultaneously ensures maximum discomfort for the target subject and maximum efficiency of the device itself. But he was lucky. Please join in! Easy to install with basic tools. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The purpose of LRAD systems, according to the Genasys website, is to provide unparalleled long-range communication and safe, scalable non-kinetic escalation of force. But sound technicians and human rights defenders around the world have disputed this framing, comparing sonic weapons to other controversial dispersal tactics like tear gas and rubber bullets. high sound pressure levelof directional pain field sonic waves, sweep mode varies the frequency at a preset rate between preset limits, included instructions show how these setting may be changed. Admittedly, i've never built one. The RC can provide control from up to 300ft distance. Send message Share & Compare 60,000 . Heat dissipation from the power source and the transducers will be important considerations. In contrast, some LRADs can create sounds up to about 160 dB when used at their full power.. Can be connected to existing home security systems, to work in conjunction with intrusion sensors and video surveillance systems. From experience, sound tends to be omni-directional or spreads out almost immediately. As soon as a link dies we'll lose every detail there. This version also includes a 115VAC /12VDC wall adapter for continuous operation from a wall outlet. This cookie is set by GDPR Cookie Consent plugin. Acoustic device deters enemies with ear-splitting noise The sound produced by an LRAD is highly directional. The Nazis are said to have developed a sonic cannon capable of shooting down allied bombers. A major part of this technology was developed in our labs in mid-nineties for the Israeli military and has been used by other militaries (including the US and Israel) and peace-keepers as a deterrent to discourage and break up unruly crowd gatherings and potential riots. Send message Share & Compare 7,000 For Sale Upon Request. Its sound wave characteristics make directional source determination difficult. That number represents an. A new weapon invented by Chinese scientists uses low frequency sound waves to cause physical distress, forcing rioters, protesters, or anyone else the wielder wants to vacate the area. Is Discontinued By Manufacturer : No. They are lightweight and easily adapted to being hand carried. Can a private person deceive a defendant to obtain evidence. LRADs and Sound Cannons Are NOT Safe. The LRAD (Long Range Acoustic Device) sound cannon was developed by the U.S. military in collaboration with the LRAD corporation following the USS Cole suicide bombing. Shopping Cart Software by BigCommerce, This page describes some very unique items generally categorized as "ultrasound", Ultrasound Pain Field Guns and Sonic Shock Wave Generators, These products are not to be confused with some of the higher-powered devices, PPP10 now includes a second trigger "boost switch" to increase output by 6db, Third Generation with 8 Special Issue Transducers, Extender, High Power 125 Watt Circuit For Cleaning Welding, Soldering And Cutting, Antigravity Lifter Craft You Can Build and Fly, Hoverboards: Today's Research, Tomorrow A Reality, Pyrotechnics, Catapults, Fireworks, Books & Plans, Amazing, Mysterious, and Novelty Plasma Devices, Ion Ray Guns, Motors, Force Fields, Detectors, Van de Graaff Generators & Electrostatics. The power amplifier with high power undoubtedly has its own advantages, but it doesnt mean that the power higher, the better. While ultrasound is still sound, it is "aim-able" in that pointing the ultrasonic transducer sends sound in that direction and not anywhere else. It can be also set as an alerting alarm. The LRAD is like a car alarm from helland if you arent careful, it could permanently damage your hearing. According to representatives from Genasys, an LRAD device broadcasts sound in a. In the meantime, I'm starting an ACLU fundraiser. worldbuilding.stackexchange.com/questions/11610/, We've added a "Necessary cookies only" option to the cookie consent popup. However, access to the raw frequency permits the carrier to experiment with finding the frequency for stone or metal. LRAD (Long Range Acoustic Device) clearly communicates at safe distances, providing focused broadcasts to intelligibly transmit critical information, instructions and warnings at distances from. The effect does not cause injury but produces a debilitating highly discomforting feeling of nausea, disorientation and paranoia. People should be able to protest safely, she says, without fear that sonic weapons designed for war will be used against them.. In one mode, the LRAD acts as an amplifier, projecting a human voice or recording across thousands of meters; in the other, it emits a deterrent tone so loud it can cause permanent hearing loss. An earlier suit in Pittsburgh awarded $72,000 to a bystander who suffered permanent hearing loss from an LRAD attack in 2009. While the ADS was designed as a non-lethal weapon, the LRAD is a communications system. In general, Carr wrote, police departments are supposed to issue warnings prior to escalations and arrest. Live or recorded broadcasts from the portable LRAD 100X are heard above crowd and background noise to ensure every message is clearly delivered. Analytical cookies are used to understand how visitors interact with the website. It is a brute force design dedicated to a single purpose: playing really loud in the most sensitive part of human hearing, Auld says. In order for sound to be well directed, the speaker has to be larger than the wavelength. They told us, all they wanted ASIN : B002AFL1JW. 0 selected Reset COMMS (4) Clear all. By: Erin Kidd [1] An LRAD, short for long-range acoustic device, was used against American protesters for the first time at the G20 Summit Pittsburgh protests in September 2009. See details How can these kinetic weapons be made more plausible? LRAD on a U.S. Navy ship A long-range acoustic device ( LRAD ), acoustic hailing device (AHD) or sound cannon is a specialized loudspeaker that produces sound at high power for communicating at a distance. The Long Range Acoustic Device (LRAD) is a brand of sound cannon, which its manufacturer, the LRAD Corporation, describes as a "directed-sound communication device" and insists is not a . These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. You shouldn't be affected by the sound as it goes past, at least not as much as you would if you were in its path. Levels of Security Deterrents & Their Methods, What our Ultrasonic Products Can and Cannot Do For You. You also have the option to opt-out of these cookies. Low profile, lightweight and designed for temporary or fixed mounting on tripods, small vessels, vehicles, and Common Remotely Operated Weapon Stations (CROWS), the LRAD 450XL incorporates LRADs patented technology to generate the audio output of a unit almost twice its size and weight with the same high level of clarity and intelligibility consistent with the LRAD product line. Before you leave, make sure you're prepared for the next disaster. Some articles suggest the drivers inside the device use piezoelectric transducers, which convert electrical impulses to high-speed vibrations, emit sound waves in the ultrasonic range. This cookie is set by GDPR Cookie Consent plugin. Sonic and ultrasonic weapons ( USW) are weapons of various types that use sound to injure or incapacitate an opponent. The 450XL is capable of emitting sound levels up to 150 decibels. Since we are working with sound, above a certain threshold, a sound wave will just pulverize the target. The Long-Range Acoustic Device (LRAD) is a powerful loudspeaker that can also emit a sirenlike noise at a volume of up to 152 decibels. This cookie is set by GDPR Cookie Consent plugin. Their concentrated effect also excels at protecting areas such as large safes, garages, or wherever a concentrated effect is necessary. Neef was covering the Pittsburgh G20 protests of 2009 when the police decided to turn on their LRAD to try and disperse the crowd. The Long Range Acoustic Device (LRAD) is an acoustic hailing device developed and built by Genasys based in the USA. Manufacturer : Kemo Electronic. Large The Its portability allows it to flush out rats and other vermin around areas such as silage bins, chicken coops, dumpsters, etc. Advanced air-to-ground communication system that is self-powered and completely autonomous from other aircraft systems, the LRAD 450XL-MMT broadcasts exceptionally clear voice messages and attention commanding alert tones out to 1,700 meters over wind, engine, and rotor noise. If it is used as a communications device, put in ear plugs and check out the scene for routes of escape from possible injurious exposure, she wrote. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Mentioned herein is a list of non-lethal anti-piracy weapons that are used or can be used to fight piracy at high seas. The sonic shriek mode produces immediate affects and can be adjusted over a wide range for optimizing on choice of targets. Vortex Cannon is absolutely possible. We also use third-party cookies that help us analyze and understand how you use this website. That's very ingenious. Capital. 3. [5] Open assembly easily enclosed by user and camouflaged. If you feel you are a victim of these "high tech" devices you can download the PDF form below as a good start to take necessary action to eliminate the problem one way or another. Compact, lightweight and designed for applications ranging from fixed security installations to mid-sized vehicles and vessels, the LRAD 500X-RE easily mounts and transports to provide law enforcement, homeland security, and defense personnel unparalleled long-range communication and safe, scalable non-kinetic escalation of force. The new sonic gun was developed as a nonlethal weapon system for use by police and law enforcement as an alternative to lethal weapons. There is nothing particularly sophisticated about it.. In preparation for the thousands of anti-war activists expected to protest outside the NATO summit in Chicago next week, the city has reportedly ordered $1 million worth of riot-control equipment including a 'sound cannon' that can be used to emit pain-inducing sound waves of up to 150 decibels. It can also be quite effective at deterring unwanted human encounters and home/auto intrusions. Maximum effect occurs over a short period of exposure when set for inaudible feeling of pressure, then becoming intensely painful. speakers (or large arrays), such as these, have an interference You'll see what speakers, enclosure, amplifier,. beam at 2.5 kHz. Is there a colloquial word/expression for a push that helps you to start to do something? (For maximum blast mitigation, units must be secured or lagged.). In 2005, an LRAD sound cannon staved off an attack by pirates on a five-star German-built cruise ship, called . For ); coverage may differ depending on layout and absorbent material in the protected area, Runs from a 12V battery (not included) or included wall adapter for normal 115VAC home power, Control console is 3 x 4 x 6 and contains all controls and connection jacks to other systems, power, and transducers, Alarm may be activated or reset remotely by radio control, or on the device by manual switch, These systems include full instructions and full descriptions of all functional controls and features along with installation suggestions. All prices are in USD. So What Is This Secretive Chinese Sonic Weapon? It only takes a minute to sign up. I would characterize it as a terror weapon, up there with tear gas and flash-bang grenades, Auld tells Popular Mechanics. Hear The Astounding and Incredible World Of High Frequency Sounds - Beyond Frequencies Detectable By The Human Ear! Further, we assume that we can overcome the high natural elasticity of skin to cause it to liquify. Audio producer Cory Choy was reporting on the 2014 Black Lives Matter protests in New York City when he first experienced sound as a weapon. These demonstrations are always spectacular, so let's build a weapon on the same principle. Original German WWII PAK 36 Stielgranate 41 37mm High Explosive Anti-Tank Stick Grenade with Transit Tube. Easily-hidden circuit produces a very annoying sonic wave that people feel, yet most do not hear, and eventually over a short period of timecannot tolerate! Will China Give Lethal Support to Russia? The NAUSEA10RC is the radio controllable version, which can be operated at distances out to 300 feet. this source, ka=19 at 2.5 kHz, and according to the LRAD data sheet, By emitting sound at an. LRAD 100X - Long Range Acoustic Devices | Defenshield, Inc. Give Us A Call: (904) 679-3942 Email Us: info [ @] defenshield.com Service-Disabled Veteran-Owned Small Business Customers Served Ballistic Protection Non-Ballistic Protection Tactical Solutions About Us Contact Us Home Ballistic Protection Products MDFP / SafePoint Accessories Regular speakers just don't have the power output required or the directionality that we want, so let's go with ultrasonic transducers. You will find on this page devices that can be tied in with alarm systems to provide a PAIN FIELD that can produce very uncomfortable to painful effects. The first LRADs were developed as military weapons in response to the bombing of the USS Cole off the coast of Yemen in 2000. Her reporting on civil engineering, machine learning, and artificial intelligence has appeared inMarketplace,IEEE Spectrum,Rewire.org, andSludge; her essays on science and language live over atPopula. reports of scaring bears away are not factory tested for confirmation, but makes sense! The best answers are voted up and rise to the top, Not the answer you're looking for? Some versions of the LRAD are capable of producing deafening sound levels of 150 decibels at one metre. This product is a portable long range directional acoustic transmitter. These military-grade weapons soon found their way ashore and into the hands of police. These cookies will be stored in your browser only with your consent. Filter: Brand. By clicking Accept, you consent to the use of ALL the cookies. If he sees there is a positive affect with the one transducer handheld device, it's easy to interpolate what the other units effectiveness will be. While I intend on ignoring the orders to remove the video, I can no longer speak about this topic without prior legal consultation. Tbilisi Tea Gogoreliani. The LRAD was developed to send messagees and warning tones over longer distances and at higher volumes than traditional loudspeakers. Extremely high Sound Pressure Level matrix output, Intensity can range from "alarm" to an intense pain field effect, Adjustable Sweep rate greatly enhances effectiveness, 12VDC internal batteries (8 "D" cells) or external 12VDC rechargeable batteries will operate for hours (batteries not included), 12VDC Wall Adapter (Included) for 115VAC operation, Accessible controls while operating allow adjustment for best effects on target, Built-in long range radio control with key chain transmitter for activation up to 300 feet. Over the last year, following a wave of. The U.S. has looked into similar nonlethal weapons, using strobes and the LRAD sound cannon. These can range from debilitating and incapacitating, to enervating fear and threatening, to sickening nausea and nerve racking paranoiaall without physical contact! Also can be used for field research work. predicted for a regular loudspeaker.]. And with the renewed use of LRADs comes a renewed concern for their danger. This is the new upgraded 2011 version Sonic Nausea, featuring an enhanced custom-built transducer which provides triple the pressurized output of the previous one. Long Range Acoustic Device (LRAD) Long range acoustic device is a non-lethal anti-piracy device which uses pain inducing sound beam to drive away the pirates. The abusive bureaucrat' s office, the executive lunchroom. The LRAD 950NXT is the worlds most advanced acoustic hailing device. (Experiment for best results.) Same for the LRAD.. 446K views 2 years ago We test our DIY LRAD outside with a "volunteer" and then move inside to go over the details and build of the LRAD system. These devices can be set up as permanent installations, or easily moved around and placed in different remote locations, and then controlled by the radio control key fob. The ultrasonic generators are devices that create ultrasonic sound waves, which can be used in some novel ways such as a safety deterrent or conditioning device. How to Dodge the Sonic Weapon Used by Police, How You Can Bring Justice to George Floyd's Death, U.S. Navy photo by Mass Communication Specialist 3rd Class Huey D. Younger Jr./Released. Again, the government just gives the gear to them for free. The NAUSEA10RC includes a 12V wall adapter that runs on 110 or 220VAC input, allowing it to run on wall power 24/7, or can be powered internally by 8AA batteries (batteries not included) for remote operation in areas without wall power. The potential user should download and read this material to understand the objective of these systems, and to note other more effective options. This technology is used for crowd-control purposes by . A Los Angeles County Sheriffs deputy in riot gear stands ready to use a sound cannon, or Long Range Acoustic Device (LRAD), against protesters near a campaign rally by presumptive GOP presidential . I agree it might not be the best option for these aliens, but I wanted to know what could be done with sound, after which I would be able to decide if it would be useful. At first you just think, Whats happening to me? Your body goes into complete pain and panic mode. pattern in the nearfield which produces peaks 6 dB higher than the We may earn commission if you buy from a link. What is the size of the space where the unit will be used? Benn Jordan 190K subscribers Subscribe 14K 260K views 2 years ago If the police or military are aiming a LRAD at. In extreme cases, they can lead to hearing loss. The Long Range Acoustic Device is an acoustic hailing device, sound cannon and sonic weapon. Live or recorded broadcasts from the portable LRAD 100X are a head above the crowd and background noise. What we suggest to those buyers not familiar with these products is to initially purchase the model PPP10 HP. The department argued loud sounds cant constitute a use of force, which the judge rejected, allowing the case to proceed. Watch This Protester Instantly Neutralize Tear Gas, How To Clear Your Photos' Metadata and Blur Faces, Trump Orders Military Helos to Disperse Protesters, The Best Noise-Canceling Headphones to Buy Now, When the Potato Launcher Was a Weapon of War, The Most Preposterous Vehicle Ever Known to Man, U.S. With a pair of parabolic dishes facing each other, people are able to talk at more than 100m distance without straining. Maximum effect occurs over a short period of exposure when set for inaudible feeling of pressure then becoming intensely painful. This cookie is set by GDPR Cookie Consent plugin. The LRAD 500X-MMT broadcasts highly intelligible voice messages and attention commanding alert tones out to 2,000 meters over wind, engine and rotor noise. Hearing protection recommended when setting up units, and for testing purposes. It can also be used as an alert in this audible mode. The company who makes the devices, also called LRAD, even used his footage for promotional material. Our innovative designs exceed the highest standards in military and mass notification markets. But while whistles emit sound waves in all directions, LRADs concentrate the waves in a narrow cone of sound, extending about 15 degrees in every direction from the axis, like a flashlight. Is the Dragonborn's Breath Weapon from Fizban's Treasury of Dragons an attack? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Land. These replacement, Radar Tuning Fork 30 MPH Tuning Fork Police Radar Calibration Fork KA Band, Damascus Worldwide TG40 Imperial Thigh Groin Protector w/Molle System Black. Our test documentation shows that with the range extending tube, sound pressure increases many db. Hearst Magazine Media, Inc. All Rights Reserved. Do you require conspicuous deterrence or camouflage? Worldbuilding Stack Exchange is a question and answer site for writers/artists using science, geography and culture to construct imaginary worlds and settings. We may earn commission if you buy from a link. The main problem I'm dealing with is that I don't think sound can be fired in a beam like light can. Announcement: AI generated content banned on Worldbuilding, Question about non-lethal weapon for large number of people. This powerful sonic deterrent can be triggered by sensors, or integrated with an existing home security system (see our, System may be activated manually at the control panel, remotely by radio control, and/or be set to trigger automatically through any of the three (3) inputs for intrusion detection sensors. Remember that the LRAD beams sound in a narrow pattern, so move off to one side to get out of the main pattern, Auld says. There are countless applications for this unit. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. Gear-obsessed editors choose every product we review. These ultrasound pain field guns and generators can be tuned to target certain animals and unwanted human intruders. 15 to 320 pounds (6.8 to 145.1 kg) and can emit sound in a 30- 60 Our PAIN FIELD devices are generally very effective for their intended purpose, but living things sometimes may react differently to this type of stimulus when used for Animal Control. In 2017, a group of New Yorkers sued the NYPD for damages resulting from sonic attacks during the protests that followed the non-indictment of Daniel Pantaleo, one of the officers who murdered Eric Garner in 2014. As long as the weapon bearer isn't "looking down the barrel" then they should be okay. The larger PCC30 has extended range and two levels of output power. Speakers that generate 110db of sound often require thousands of watts. I've had to hold all comments for review due to the amount of racism and trolling showing up this morning. Will the unit be used indoors or outdoors? For Sale Upon Request. Can connect to our Canine Bark Detector (sold separately) for activating when dogs bark, and train them to stop barking, The PPF40 small size of 8" x 8" x 5" allows for easy hiding and camouflaging, The PCC30 has twice the transducers and is twice the size at 16" x 8" x 5". Connect and share knowledge within a single location that is structured and easy to search. @chaslyfromUK no, you just use one dish at the weapon end. A handheld microwave gun: Is it feasible and what would it do? Military officials asked the LRAD Corporation (now Genasys) for a device with two functions: to communicate at a distance with potential threats, and to disperse them with an unbearable alarm-like sound. So do you mean you set off an explosion in the focus point of one dish and someone is destroyed at the focus of the other? Additionally you might be interested in Kate Bush - Experiment IV, No technical details are shown but the idea is there. The panel recommended the weapon be turned into practical equipment as soon as possible.. The OP states that this will be human mounted weapon so safety precautions need to be made to ensure the weapon carrier doesn't get liquified too. Skin alone just make the target look naked. Allows the user to have a lot of fun playing jokes on people, or provides a very useful tool against unwanted intrusions and unwanted congestions of people. 1. For Sale New to the Market 65 GEL Land. Get our Product Guide for details. But so-called sound cannons can do serious harm when police departments misuse themand they may misuse them a lot. Listen to the amazing world of high-frequency sounds. These cookies track visitors across websites and collect information to provide customized ads. The LRAD has been reportedly used against Occupy protestors . At a distance, an LRAD deterrent tone may sound like any other alarm. Sort by: 4 products Filter and sort Filter and sort 4 products Brand. The idea of focusing sound has already been tackled here. It renders sound in directional focus and at. Protesters have reported LRAD attacks by police at the NODAPL protests at Standing Rock, during the 2017 Womens March in Washington, D.C., and in dozens of other cities and demonstrations around the world. In addition to featuring best-in-class broadcast voice intelligibility, the LRAD 100X is 20 30 decibels louder than typical bullhorns and vehicle-based P.A. Adjustable frequency is easily set for immediate reaction using audibly painful Sonic Waves or inaudible Ultrasound, or a combination of both. Using optimized driver and waveguide technology, the LRAD MSS surrounds an equipped vehicle with an acoustic security barrier and an attention commanding communication capability. Pinpoint Those Annoying Sounds Coming From Bark Controllers, Animal Repellers, and Those Who Might be Purposely Using Ultrasounds Against You for Harassment, Front panel controls: 3.5 mm phono jack for audio output into headsets or recorder or both On/off and volume control Narrow band tuning dial from 23 to 27 kHz (-3db points) Uses eight AA batteries installed in handle (not included) Includes cushioned quality headsets (may differ from photo). Cole in 2000, using a small boat laden with explosives. For extended run time six AA batteries in a battery pack with transistor clips (available from most electronics stores) can be used instead. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. The LRAD Sound Cannon is an acoustic weapon and communication device. The LRAD 1000Xi is a power efficient, long distance communication system designed for applications ranging from critical infrastructure protection to territorial water, border and port security, and large vessel and vehicle installations. Small spherical "point-source" acoustic devices follow the known Product details. 1. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. It has many uses, both in the scientific field especially entomology to study insects, bats, other animals and fauna. The cookie is used to store the user consent for the cookies in the category "Performance". Over the past few weeks, as worldwide protests have erupted in response to the May 25 murder of George Floyd by Minneapolis police officer Derek Chauvin, reports of police using LRADs against civilians have again poured into social media feeds. .css-v1xtj3{display:block;font-family:FreightSansW01,Helvetica,Arial,Sans-serif;font-weight:100;margin-bottom:0;margin-top:0;-webkit-text-decoration:none;text-decoration:none;}@media (any-hover: hover){.css-v1xtj3:hover{color:link-hover;}}@media(max-width: 48rem){.css-v1xtj3{font-size:1.1387rem;line-height:1.2;margin-bottom:1rem;margin-top:0.625rem;}}@media(min-width: 40.625rem){.css-v1xtj3{line-height:1.2;}}@media(min-width: 48rem){.css-v1xtj3{font-size:1.18581rem;line-height:1.2;margin-bottom:0.5rem;margin-top:0rem;}}@media(min-width: 64rem){.css-v1xtj3{font-size:1.23488rem;line-height:1.2;margin-top:0.9375rem;}}U.S. Product Dimensions : 3.94 x 2.36 x 2.36 inches; 0.32 Ounces. Gear-obsessed editors choose every product we review. The cannons, the LRAD 100X and the LRAD 300X, cost $6,000 and $12,000 respectively. Determine what and where it is coming from! One journalist on the receiving end of LRAD described feeling as though his head was going to pop, and that his brain felt like it was vibrating in a bowl of jelly on the table., The as-yet unnamed weapon is described as rifle-like, with a stock, trigger, and barrel. In addition to featuring best-in-class broadcast voice intelligibility, the LRAD 100x is 20-30 decibels louder than typical bullhorns and vehicle-based P.A. (LRAD), also called the Sound of Force Protection, was developed by American Technology Corporation (ATCO). The first documented use was in Pittsburgh during the G20 Summit in 2009.

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