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Sonic and ultrasonic weapons (USW) are weapons of various types that use sound to injure, incapacitate, or kill an opponent. Some sonic weapons are currently in limited use or in research and development by military and police forces. A military is an Organization authorized by its Nation to use force usually including use of Weapons in defending its Country (or by attacking Police are agents or agencies usually of the executive, empowered to enforce the law and to effect public and social order through the legitimatized use of force Others exist only in the realm of science fiction. Some of these weapons have been described as sonic bullets, sonic grenades, sonic mines, or sonic cannons. A land mine is an Explosive device designed to be placed on or in the ground to explode when triggered by an operator or the Proximity of a vehicle person | NOTE Throughout this article "cannon" is used as BOTH the || singular and plural Some make a focused beam of sound or ultrasound; some make an area field of sound. Sound' is Vibration transmitted through a Solid, Liquid, or Gas; particularly sound means those vibrations composed of Frequencies Not to be confused with Supersonic. Ultrasound is cyclic Sound pressure with a Frequency greater than the upper Although many real sonic and ultrasonic weapons are described as "non-lethal", they can still kill under certain conditions. Less-lethal weapons, less-than-lethal weapons, non-lethal weapons, non-deadly weapons, or more recently compliance weapons are weapons intended

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Designed to emit sound as an irritant

Extremely high-power sound waves can break the eardrums of a target and cause severe pain or disorientation. The tympanic membrane (also tympanum or myrinx is a thin membrane that separates the External ear from the Middle ear. This is usually sufficient to incapacitate a person. At higher energy levels, a subsonic shock wave is theoretically powerful enough to do damage (see Earthquake). An earthquake is the result of a sudden release of energy in the Earth 's crust that creates Seismic waves Earthquakes are recorded with a Seismometer The possible effects have been the subject of much speculation. The EMF Dosimetry Hand Book will provide further results of the bio-effects and expectations of these weapons. [1] Less powerful sound waves can cause humans to experience nausea or discomfort. The use of these frequencies to incapacitate persons has occurred both in counter-terrorist and crowd control settings.

The possibility of a device that produces frequency that causes vibration of the eyeballs — and therefore distortion of vision — was apparently confirmed by the work of engineer Vic Tandy[1][2] while attempting to demystify a “haunting” in his laboratory in Coventry. Coventry ( is a city and Metropolitan borough in the County of West Midlands in England. This “spook” was characterised by a feeling of unease and vague glimpses of a grey apparition. Some detective work implicated a newly installed extractor fan that, Tandy found, was generating infrasound of 18. Infrasound is Sound with a Frequency too low to be heard by the human Ear. 9 Hz, 0. 3 Hz, and 9 Hz.

In 2005 CNN reported that the crew of the cruise ship Seabourn Spirit used a long range acoustic device (LRAD) to deter pirates who chased and attacked the ship[2]. Year 2005 ( MMV) was a Common year starting on Saturday (link displays full calendar of the Gregorian calendar. Cable News Network, usually referred to by its Initialism CNN, is a major English language Television network founded in 1980 by Ted Turner Pirate attack On 5 November 2005 at 550 am the ship was attacked 115 km off the coast of Somalia, by two Pirate speedboats launched The long range acoustic device (LRAD is a crowd-control and hailing device developed by American Technology Corporation. Piracy is Robbery committed at sea or sometimes on shore without a commission from a sovereign Nation (as distinct from Privateering Its actual efficacy, however, has not been established.

The BBC reported in Oct 2006 on a 'mobile' sonic device which is being used in Grimsby, Hull and Lancashire and is designed to deter troublesome teenagers from lingering around shops in target areas. The Mosquito or Mosquito alarm (marketed as the Beethoven in France and the Swiss-Mosquito in Switzerland is an electronic device which emits an Grimsby (or archaically Great Grimsby) is a Seaport on the Humber Estuary in Lincolnshire, England. Kingston upon Hull ( almost invariably referred Lancashire is a non-metropolitan county of historic origin in the North West of England, bounded to the west by the Irish Sea The device works by emitting an ultra-high frequency blast that teenagers or those under 25 are susceptible to and find uncomfortable. Age-related hearing loss apparently prevents the ultra-high pitch sound causing a nuisance to those in their late twenties and above.

Demonstrated infrasonic weapon

The U. S. DOD has demonstrated phased arrays of infrasonic emitters. The United States Department of Defense ( DOD or DoD) is the federal department charged with coordinating and supervising all agencies and functions of the government Infrasound is Sound with a Frequency too low to be heard by the human Ear. 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, which are usually one wavelength apart. At this frequency, armor and concrete walls and other common building materials allow sound waves to pass through, providing little defense. [3]

Lethal sonic weapons, in air

These are hypothetical or conceptual weapons possibly in development:

Lethal sonic weapons, underwater

The use of sonic weapons underwater has been widely speculated about.

In popular culture and fiction

See Sonic weaponry in popular culture

See also

References

  1. ^ infrasound
  2. ^ "The ghost in the machine" (1998). The long range acoustic device (LRAD is a crowd-control and hailing device developed by American Technology Corporation. The brown note, according to an Urban legend, is an infrasound frequency that causes Humans to lose control of their Bowels due to Resonance The sone was proposed as a unit of perceived Loudness by S Smith Stevens in 1936 Sound pressure is the local Pressure deviation from the ambient (average or equilibrium pressure caused by a Sound Wave. The sound energy q results from the integral Particle velocity v of the surface A, whereby only the portions perpendicularly to the surface Sound power or acoustic power P ac is a measure of sonic Energy E per Time t unit The sound intensity, I, (acoustic intensity is defined as the Sound power Pac per unit area A. Infrasound is Sound with a Frequency too low to be heard by the human Ear. Not to be confused with Supersonic. Ultrasound is cyclic Sound pressure with a Frequency greater than the upper Journal of the Society for Psychical Research (62): 360-364.  
  3. ^ Low Frequency Noise Report 2003
  4. ^ Sonic bullets for use against hijackers

External links

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