Tigers use growl in very low frequencies to paralyze victims. This page describes some very unique items generally categorized as ultrasound the ultrasonic receiver is a device that can detect sound waves that are normally beyond the range of human hearing, and then translate this signal to audible frequencies. Whales produce the loudest low frequency sounds on earth at around 190 db 17 to 30 hz. The depelopers in the us government wont comment, so details are sketchy, but the device most likely operates by generating low frequency sound pulses and sends them toward a target. These bulky units have been used for crowd control and repelling pirates. People dont usually think of infrasound as sound at all. Officials arent blaming anyone yet, but they suspect u.
The low frequency of infrasonic sound and its corresponding long wavelength make it much more capable of bending around or penetrating the human body, creating an oscillating pressure system. Long range acoustic devices lrads are used for crowd control. This result has been replicated in laboratory animal experiments, demonstrating the mutations are definitely due to the combination of whole body vibration and low frequency noise. The airborne energy manifests as sound across a range of frequencies from infrasonic 020 hertz hz up through lowfrequency sound generally said to be below 200 hz, and into the higher audible frequency range above 200 hz. A lowfrequency sound transducer produces sounds below the audible frequency range below 20 hz. It can also cause headaches, intense irritation, sweating, imbalance, and nausea.
Dsg laboratories sonic nausea electronic audible sound. It can have a profound effect on your body, and should be experimented with carefully. We do know, however, that high intensity infrasound causes headache, fatigue, and anxiety. Infrasonic weapons like the long range acoustic device lrad rely on loud, low frequency sounds infrasound. One of the characteristics of low frequency sound is that it can travel across long distances. Infrasound another explanation thats been put forth is the use of infrasound.
At 500 khz and higher, we label sounds as megasonic. Low frequency sound alone is not genotoxic, but when combined with vibration, chronic occupational exposure has genotoxic effects silva et al. It was also called pressure wave antipersonnel device. Several devices that can stun advancing troops with a shockwave of low frequency sound are being developed. These weapons are said to cause temporary or permanent blinding, interference with mental processes, modification of. Chinese scientists develop handheld sonic weapon for crowd control.
Oct 12, 2017 state department kept quiet for months about cuba health attacks whether theres a direct relationship between the sound and the physical damage suffered by the victims is unclear. Exploring the use of audio to influence humans physically and psychologically as a means of nonlethal warfare methods throughout both the 20th and the 21st century. Men of hitlers war machine were studying different ways of killing a man. Acoustic weapons a prospective assessment 169 some historic aspects of acoustic weapons whereas low frequency sound was often used passively by armed forces to detect and locate artillery, nothing is known about actual weapon use by the military. Since we are working with sound, above a certain threshold, a sound wave will just pulverize the target. Aug 11, 2017 a supersecret sonic weapon being used to attack diplomats in a foreign country may sound like the start of a scifi novel, but thats exactly what several u. Sonic and ultrasonic weapons usw are weapons of various types that use sound to injure. The airborne energy manifests as sound across a range of frequencies from infrasonic 020 hertz hz up through low frequency sound generally said to be below 200 hz, and into the higher audible frequency range above 200 hz. Its well known that with the correct frequency applied that sound, and sound alone can shatter a wine glass. I believe my neighbor is harassing me with low frequency. How far away are we from the spaceage sonic weapons of science fiction. However, its possible the devices somehow generate infrasound the type of lowfrequency sound given off by windmills or wind generators.
Ultrasonic mind control is a science very much in its infancy. Voice to skull directed acoustic devices are neuroelectromagnetic nonlethal weapons, able to produce moodaltering sounds in a persons head. The sound transducer is driven by its own amplifier that uses the output of a low pass filter as. A directedenergy weapon dew is a ranged weapon that damages its target with highly focused energy. Mar 04, 2015 the low frequency of infrasonic sound and its corresponding long wavelength make it much more capable of bending around or penetrating the human body, creating an oscillating pressure system. The scientists built and tested the machine on the themselves and the experiment nearly. Remote neural monitoring rnm uses satellite transmitted extra low frequencies elf to send voice to brain communications. Most lfis also contain infrasound below 20hz which you can only feel and surely have experienced at one time or another. Sep 25, 2019 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. The ultrasonic generators are devices that create ultrasonic sound waves, which can be used in some novel ways such as a safety deterrent or.
It generates a unique combination of highpressure sound waves which soon leads most in its vicinity to queasiness. Sounds below 20 hz are called infrasonic sound or infrasound. Ultrasound weapons are much more effective underwater than through air. A lawnmower runs around 85 to 90 db, while a jackhammer ratchets the noise up to 110 db, and a nearby jet engine gets you up into the 140 db range source. Infrasound is sound that is below your hearing threshold which general drops off at 2030hz, i.
These frequencies occur within the following waves. Putnam said the frequency of lrad ranges from 2,800 hertz to 3,000 hertz. A low frequency sound transducer produces sounds below the audible frequency range below 20 hz. Lowfrequency infrasound at high db can cause tremors inside our organs and it hurts. A decibel is a unit of sound intensity, while hertz refers to the frequency at which the sound waves are moving. However, it is within the creation of new weapons that many issues arise, which perhaps. Most of these weapons function between the frequency range of about 1 hz to 30 khz. Apr 11, 2019 sounds below 20 hz are called infrasonic sound or infrasound. Jul 25, 2019 should you use such a weapon, your only recourse is to quickly bug out to increase the distance between you and the source before being exposed. A new weapon invented by chinese scientists uses low frequency sound waves to cause physical distress, forcing rioters, protesters, or anyone. This is due to the ease with which low frequency sound passes from water into a body, but not into any pockets of gas in the body, which reflect the sound due to mismatched acoustic impedance. Sep 14, 2012 digital justice visits lrad long range acoustic device headquarters to test out its product. These demonstrations are always spectacular, so lets build a weapon on the same principle.
Ear ringing, dizziness, palpitation, and autonomic imbalance, are symptoms caused by ultra low frequency or infrasound. Sonic nausea is a small electronic acoustic generating device which can really turn one feet s stomach. The sound modulation might be voice or audio subliminal messages. Around the world, different types of acoustic weapons are used for crowd control, to protect areas of attack and to incapacitate soldiers or workers. Nov 12, 2019 sounds between 20 hz and 20,000 hz are considered within our normal threshold of hearing. Silent sound infrasound can make you physically ill. A car stereo made a world record by pumping out 182 db of sound that could instantly cause hearing loss. Remember, a lowfrequency sound has a longrange reach. Remember, a low frequency sound has a longrange reach. Low frequency intrusion has also been used effectively by the u.
Jun 10, 20 could the worlds militaries really build lethal sonic weapons. Extremely low frequency elf 1 hz to 30 hz, super low frequency slf 30 hz to 300 hz, ultra low frequency ulf 300 hz to 3 khz, and very low frequency vlf 3 khz to 30 khz. Were talking about a directional sound wave generator. First off, low frequency sound is generally considered to be different than infrasound. The psychoacoustic effect of infrasonic, sonic and. The idea was to produce high frequency waves that would burst the eardrums of enemy soldiers. The name is a metonym for the common color of human feces. Sonic weapons chinese develop secretive sonic weapon. Acoustic weapons a prospective assessment 169 some historic aspects of acoustic weapons whereas lowfrequency sound was often used passively by armed forces to detect and locate artillery, nothing is known about actual weapon use by the military.
Vladimir gavreau infrasound is low frequency audio beneath the human range of hearing. Shomertec sonic nausea electronic disruption device. Electronic harassment and mind control technologies direct energy through lasers, radio frequency energy beams, holography, interferometry, electromagnetic radiation, radio and sound waves, satellites, radar, miniature electronic robots, smart dust, and other means. To understand how low frequency ultrasound lilfu stimulates brain circuit activity, you have to grasp whats going on with your gray matter when doctors arent using hightech gadgetry to blast it with sound waves brain cells release neurotransmitters, molecules that carry information from one nerve cell to another across small gaps called synapses. In the early 1990s russia had developed a 10 hz vlf modulator capable of targeting individuals over hundreds of meters, causing pain, nausea, and vomiting. The latter means sounds with frequencies under the level of human hearing, typically around 20 hz. Explore the links below to learn even more about ultrasound and the human brain. It was a directional weapon that could target specific individuals by producing audible sound at about 16 khz, which turned into infrasound at 2 hz when it coupled with the ears. The brown note is a hypothetical infrasonic frequency that would cause humans to lose control of their bowels due to resonance. Set your bowel disruptor to explosive diarrhea io9. Human beings are normally able to detect sounds in the range of 2020,000 hz and it is well known that sounds within this range can damage the hearing. Infrasound can penetrate any objects unlike middle and high frequency sounds. This is due to the ease with which low frequency sound passes from water into a body, but not into any pockets of gas in the body, which reflect the. The sound transducer is driven by its own amplifier that uses the output of a low pass filter as its input.
Known as infrasound, these vibrations are felt but not heard. Reports of sonic attacks in china, and previously in cuba. Jan 29, 2020 as a nonlethal weapon, infrasound is being introduced by chinese authorities especially, to control crowds of rioters and people. With enough research, we might one day live in an age where police use ultrasound to incapacitate you at a protest, while physicians optimize human brain efficiency with a little ultrasonic finetuning. The research will not surprise military scientists, long aware of the potential of infrasound as a weapon. Attempts to demonstrate the existence of a brown note using sound waves transmitted through air have failed. Could the worlds militaries really build lethal sonic weapons. Its called infrasound, and its effect on human beings is not completely understood. Ultrasound is sound at extremely high frequencies above 20,000 hz, and it can heat up tissue if pressed against a person for an extended period. We should be well aware of it, because many countries are trying to apply it as war weapon. In the 1950s a group of scientists working on robotics research accidentally discovered the principle behind a deadly new weapon that utilized infrasound sound at such a low frequency that it cannot be heard by human ears, but powerful enough to tear a person apart, quite literally, from the inside.
Depending on the frequency, different parts of the body will resonate, which can have very unusual nonauditory effects. Jun 11, 2016 the psychoacoustic effect of infrasonic, sonic and ultrasonic frequencies within nonlethal military warfare techniques. Highamplitude sound of a specific pattern at a frequency close to the sensitivity peak of human hearing 23 khz is used as a burglar deterrent. If you cant get away, god help you, since there is no earthly protection against low frequency, highintensity sonic weapons. Infrasonic weapons like the long range acoustic device rely on loud, low frequency sounds infrasound. Some earlier sound weapons simply caused pain from high decibel noises like mariah carey, or generated severe nausea using subsonics subsonic or infrasonic noise is defined as any sound whose frequency is less than 20 hz, like barry whites voice.
Ultrasound deterrents for personal, home and property. However, sounds under the frequency of 20 hz can also affect the ear even though we are unable to hear them. State department kept quiet for months about cuba health attacks whether theres a direct relationship between the sound and the physical damage suffered by. You can hear very low frequency sounds at levels above 88100 db down to a few cycles. Lrad is a communication device used by military, wildlife and law enforcement officials. Many of the nonlethal weapons under consideration utilize infrasound or electromagnetic energy including lasers, microwave or radio frequency radiation, or visible light pulsed at brainwave frequency for their effects.
Close up, the highintensity calls by blue and fin whales can collapse the lungs and cause death to other living creatures. The sound we feel in our bodies is usually a low frequency sound. Highintensity acoustics for military nonlethal applications oxford. Sounds above 20 khzour upper range of hearingare called ultrasonic. 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. Infrasound is of such low frequency it cannot be heard with human ears, yet it still causes an unconscious physiological anxiety. The low frequency sounds bend over the wall and return to the ground. People can rarely hear as high as 20k, and even 10k is above what is usually considered musical. Should you use such a weapon, your only recourse is to quickly bug out to increase the distance between you and the source before being exposed. Within such devices, we know various infrasound speakers, sonic guns that emit directed waves of low frequency sounds, low frequency acoustic bullets, and even amplifiers.
A lawnmower runs around 85 to 90 db, while a jackhammer ratchets the noise up to 110 db, and a nearby jet. It may have been the symptoms were caused by a combination of chemical toxins and a lowfrequency sound. Noise induced neurological disturbances in humans exposed to continuous low frequency tones for durations longer than 15 minutes involved development of immediate and longterm problems affecting brain tissue. Thats similar to the pitch of human speech, which is between 500 hz. Divers and aquatic mammals may also suffer lung and sinus injuries from high intensity, low frequency sound. Low frequency sound is used by marine mammals to communicate over vast distances and by birds to determine migration patterns. From wikipedia wavelengths, the wavelengths of sound frequencies audible to the human ear 20 hz20 khz are thus between approximately 17 m and 17 mm, respectively. Sound as a defense weapon is feasible with a sonic weapon. Jun 06, 2018 infrasonic weapons like the long range acoustic device rely on loud, low frequency sounds infrasound. The psychoacoustic effect of infrasonic, sonic and ultrasonic. The nazi secret weapon, schallkanone, the sound gun emitted a low frequency sound that could make enemy soldiers lose consciousness.
1248 1435 607 264 110 1531 682 1073 1316 92 76 1096 181 220 720 872 585 1244 699 859 1381 1092 700 642 444 692 856 373 925 1038 34 962 685 277 660 119