Neurotechnology in national security and defense: Practical considerations, Neuroethical concerns. Less than 20 Hz. Retrieved from https://www.ted.com/talks/woody_norris_invents_amazing_things?language=en, Pellegrino, R. & Productions, E. A. Retrieved from http://www.ncbi.nlm.nih.gov/pubmed/21173483, Salt, A. N. & Hullar, T. E. (2010). Applications of high-power ultrasonic with low frequency aim to improve the quality of food products. A brief history of sonic warfare. Each frequency enters the auditory canal of the ear through to the cochlea; in turn the basilar membrane resonates at the frequency heard, this passes to the brain allowing us to recognise the frequency (Cook, 1999). (n.d.). You see, the Vietnamese people worship their ancestors and they take a lot of notice of the spirits and stuff like that. Example. Hemispheric- synchronisation during anaesthesia: A double-blind randomised trial using audiotapes for intra-operative nociception control. sound with a frequency of less than 16 Hz is inaudible. It is also apparent that such frequencies have been used in many varying fields to provide evidence of it’s existence, exterior to military and police usage. Music, cognition, and computerized sound: an introduction to psychoacoustics (1st ed.). It has the frequency equal to the audible frequency range. The audio spectrum, showing infrasound, sound and ultrasound. (1973). A. Not quite the injuries reported by the diplomats. A single ultrasonic emitter (loudspeaker) would struggle to generate enough power to affect someone halfway across a typical room. adjective noting or pertaining to a sound wave with a frequency below the audio-frequency range. (1999). The present chapter within this text will analyse research collated that will allow for a greater insight into the application of infrasound on the human body, thus allowing us to formulate a background before exploring the outcome of the research tested within this study. 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 http://schizophonia.com/wp-content/uploads/2015/01/Alex_Davies_Acoustic_Trauma.pdf, De Laro Research. Sonic. In air, sound waves spread out in all directions away from the source. Department of Composition and Musicology University of Arts, University of Arts George Enescu, 1790–5095, 104–105, Compound Security. • The word ultrasonic combines the Latin roots ultra, meaning ‘beyond’ and sonic, or sound. These techniques have allowed for a greater amount of research in the 21st century, and as a common theme, this is particularly within the U.S military. Infrasound can be generated by both natural and man-made events. To support this statement, it’s also apparent within research conducted by NASA (Aerospace Medical Research Laboratory, 1976) that the resonant frequency of the human eyeball sits at around 18hertz, just below the audible range of the human ear. More than 20000 Hz. Retrieved from http://www.academia.edu/1191555/ Good_Vibrations_The_Case_for_a_Specific_Effect_of_Infrasound_in_Instances_of_Anom alous_Experience_has_Yet_to_be_Empirically_Demonstrated, Broner, N. (2003). The article in New Scientist reports that the audio produced psychoacoustic effects giddiness, nausea, fainting, or merely a “spooky” psychological effect to targets. 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