Vision would be affected, and low- level exposures would cause point sources of light to appear as lines.”. Cambridge, MA: MIT Press. With research such as (Mercola, 2015), discussing the role of increased Serotonin levels positively effecting the feeling of anxiety, that perhaps one may see the benefits of BWE. The correct measurement would be 20,000 HTRZ. (2004). Application of ultrasound in medicine. You see, the Vietnamese people worship their ancestors and they take a lot of notice of the spirits and stuff like that. Advanced applications in acoustics, noise, and vibration (1st ed.). Moreover, devices similar to this have also been developed previously; though military and law enforcement have denied the use of ultrasonic devices it apparent that such exist. (2001). The psychoacoustic effect of infrasonic, sonic and ultrasonic frequencies within non-lethal military warfare techniques. Cavitation is when the pressure difference between a strong push and a strong pull in a very loud sound causes bubbles to form. Similar to that of light being focused into a laser, hypersonic sound works under a similar principle, with a speaker being focused into a highly directional focused beam of sound. Effect of infrasound on cochlear damage from exposure to a 4 kHz octave band of noise. Sonic weapons fall into two categories: those that involve audible frequencies, and those that are either ultrasonic or infrasonic and so are inaudible. Binaural Beats. The ultrasonic is defined as sound waves with a frequency exceeding the human hearing limit. So has ultrasound been used against them? As for detection of such methods, it’s a sad state of affairs. Victims have reportedly experienced mild brain injuries with symptoms including “subtle and vague, but abnormal, sensations of sound and pressure”. On the Compound Security System’s website, who are the company behind the M.A.D, they specify that the sine wave frequency played by the device, at 20kHz, can only be heard by those under 25 years of age (Compound Security, 2015). Retrieved from https:// crab.wordpress.com/2008/01/14/a-short-history-of-sound-weapons-pt2-infrasound/, Davies, A. Little is known for definite but the symptoms do suggest that some sort of sonic interference could have taken place. . It is apparent that given the technical depth that infrasound can be applied to within weaponry, a very in depth analysis of each device would be required. Cambridge, MA: The MIT Press, Crab, S. (2008). This device, known as the ‘Wirbelwind Kanonew’ , is perhaps the only known fully developed infrasonic weapon created in order to physically effect it’s target, with the intention of countering enemy aircraft and infantry by creating a vortex of sound (Crab, 2008). Department of Composition and Musicology University of Arts, University of Arts George Enescu, 1790–5095, 104–105, Compound Security. Neurotechnology in national security and defense: Practical considerations, Neuroethical concerns. Frequencies below 50Hz commonly lose their coherence and are perceived to pulse or fluctuate, which is analogous to the strobing beat of a modulated light.”. Retrieved from http:// www.ncbi.nlm.nih.gov/pubmed/10460529, L. Fannin, Ph.D, J. Retrieved from http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3564184/, Caterina Filimon, R. (n.d.). Ultrasonic waves are waves that have high amplitudes. BBC Middle East, Retrieved from http:// news.bbc.co.uk/1/hi/world/middle_east/3042907.stm, Bahaistudies. The sonic boom of supersonic aircraft contains significant levels of infrasound. Ultrasonic. Could surveillance of diplomats be the cause of these brain injuries. • Generally these waves are called as high frequency waves. Sound waves with frequencies less than 20Hz are called infrasonic or subsonic and those with frequencies above 20kHz are called ultrasonic.. Infrasonic waves (1973). Infrasonic waves are inaudible to human ear and their frequency ranges are below 20hz. Exposure to levels above 80db between 0.5Hz and 10Hz causing these possible vibrational movements within the ear’s functions, are said to cause psychological changes such as fear, sorrow, depression, anxiety, nausea, chest pressure and hallucinations (ECRIP, 2008). This suggest that perhaps the device’s intended use is to create auditory discomfort for the target audience, in order for them to move away from a specific area. These bulky units have been used for crowd control and repelling pirates. Cavitation, by contrast, might occur in the fluid of the inner ear, in body tissue or cells. Now you’ve got to understand the Vietnamese way of life to realise the power behind Wandering Soul. It is not unreasonable to state that as technology has progressed within ultrasonic research and as more psychological effects of inaudible sounds are discovered, the perceptual military operations of sonic warfare have widened. This is the resonant frequency of flesh and, theoretically, it can rupture internal organs if loud enough. Just as TI perps are usually experts at harassing and persecuting TIs, they use those same intentions against us. Copyright © 2010–2021, The Conversation US, Inc. It is reported that Gavreau had discovered the infrasound weapon by result of a resonant frequency being emitted from a motor-driven ventilator within his office (Vassilatos, no date). Sonic. However, what these to techniques did not allow for was the development ultrasound, resulting in the audio being highly directional. Chicago, IL: University of Chicago Press, New Scientist. As a result, this could lead to a plausible suggestion that military application of non-lethal audio weapons have not been made publicly available. Our internal organs (heart, liver, stomach, kidneys) are attached to the bones by elastic connective tissue, and at low frequencies may be considered simple oscillators. Thus, the organs may resonate. Any sound gets less powerful the further you are from a loudspeaker, but ultrasound loses power far more quickly with distance than audible sounds do. The article in New Scientist reports that the audio produced psychoacoustic effects giddiness, nausea, fainting, or merely a “spooky” psychological effect to targets. . Ultrasonic (high frequency) bursts have been used as a teenager repellant, and ultrasound is known to cause headaches and nausea. Reed Business Information Norris, W. (2004). One can draw a conclusion from the description of both the M.A.D and the ‘Phasor Pain Field Generator’ that the intended outcome if the the target to feel discomfort. Retrieved from http://articles.mercola.com/sites/articles/archive/2015/07/02/social-anxiety-disorder.aspx, Meyer, L. B. There are numerous reports of animals acting strangely before an earthquake is first felt. (2001). The LRAD focuses a directional 15° to 30° beam of sound between 1kHz and 5kHz reaching a distance of around 5,500 meters (LRAD , 2015). This is a tricky concept to grasp as neither people or dogs can hear the low-frequency sound, but the 'louder' the infrasonic sound, the more vibration it causes. Could perhaps draw a conclusion that resonance could be the cause of these.. Into the listeners openend of the Fuego volcano in Guatamala produced infrasonic sound is only audible to the (! Ultrasonic, infrasonic, sound waves whose frequencies are less than 20 Hz are in the previous chapter first.. 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