praegune kellaaeg 23.05.2024 04:55:38
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vladimir
HV kasutaja
liitunud: 03.09.2004
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13.01.2008 21:15:51
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tahanteada kirjutas: |
Alla 20 hertsi väheneb inimese kõrvakuulmine kõvasti 8) Ja helisid hakatakse tundma - kõigepealt mürana, siis valuaistinguga.
Näiteks 7Hz heliga võib üleüldse kuulmise minema lennutada - ja jäädavalt
Ning veel üks konks: Sageduse a 10Hz ja alla selle edastamiseks on vaja kõlarit, mille läbimõõt on ise nii "pool kinosaali" Ja kui selline häält teeb, siis liduvad inimesed kohe saalist minema - mõeldes, et maavärin on alanud.
Samuti võib heli - alla 10Hz-i ka selle kinosaali enda konstruktsiooni kokku varistada. |
7 Hz ei tee kurdiks, 7 Hz peal hakkavad su siseorganid kaasa värisema, ka ühtib see ajulainete sagedusega, ning piisava ekspositsiooniajaga lähed lolliks (on juhtunud vanadel aegadel aurulaevadel) või piisava amplituudi korral transformeerud süldiks. Alla 10 Hz saab ka väiksema agregaadiga kätte kui "pool kinosaali" - kandeliin, Linkwitz Transform, ka tavaline bassrefleks suudavad seda, kui õigesti teha. Samuti võib inframadalate ruupori hoone integraalse osana projekteerida - nt. põranda alla. Muidugi tuleb niisuguste sageduste puhul hoone konstruktsioon hoolega läbi mõelda.
Ise arvan, et CC Plazas on alumine piir 30...40 Hz kandis. Tavalisele inimesele on "ülimalt võimas ja madal bass" 50...100Hz vahemikus, sest see paneb rinnakorvi ja kõhunaha värisema, seega pole mulje avaldamiseks 20 Hz-ni punnitada vaja (ega majanduslikult mõttekas). See rohkem kodukinoentusiastide mängumaa.
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Tanel
HV Guru
liitunud: 01.10.2001
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13.01.2008 21:20:27
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Natuke lugemist:
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The military use of infrasound dates back to the First World War, when the detection of such frequencies helped pinpoint the enemys heavy artillery. The idea that infrasound could actually be used as a weapon tends to be attributed to Axis scientists 3, but of course much of the weapons research by the Axis powers was also of interest to Allied military scientists (see Sounds suspicious panel). The potential of infrasound to affect the human body has long been apparent; as anybody who has leant against the PA at a rave will tell you, even audible sub-bass frequencies at the correct volume can churn your stomach. The theory behind infrasound weapons tends to focus on the idea that certain frequencies can be used as both a weapon and as a method of crowd control.
According to the Working Paper on Infrasound Weapons produced by Hungary for the United Nations in 1978 4, the frequency that is thought to be most dangerous to humans is between 7 and 8Hz. This is the resonant frequency of flesh and, theoretically, it can rupture internal organs if loud enough. Seven hertz is also the average frequency of the brains alpha rhythms; thus this frequency has been described as dangerous but also relaxing. Whether exposure to such infrasound can trigger epileptic seizures, as some fear, remains unclear; experimental data on exposure to such frequencies gives a variety of results. It should be noted, however, that the strobe light effect associated with triggering epileptic seizures flashes at an equivalent rhythm. 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.
Toward the end of World War II, the Germans were reported to have made a different type of acoustic device. It looked like a large cannon and sent out a sonic boomlike shock wave that in theory could have felled a B-17 bomber. In the mid-1940s, the U.S. Navy created a program called Project Squid to study the German vortex technology. The results are unknown. But Guy Obolensky, an American inventor, says he replicated the Nazi device in his laboratory in 1949. Against hard objects the effect was astounding, he says: It could snap a board like a twig. Against soft targets like people, it had a different effect. "I felt like I had been hit by a thick rubber blanket," says Obolensky, who once stood in its path. The idea seemed to founder for years until recently, when the military was intrigued by its nonlethal possibilities. The Army and Navy now have vortex projects underway. The SARA lab has tested its prototype devie at Camp Pendleton, one source says. |
http://forum.ragezone.com/f10/brain-stoping-certain-hz-48262/
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sa ei või postitada uusi teemasid siia foorumisse sa ei või vastata selle foorumi teemadele sa ei või muuta oma postitusi selles foorumis sa ei või kustutada oma postitusi selles foorumis sa ei või vastata küsitlustele selles foorumis sa ei saa lisada manuseid selles foorumis sa võid manuseid alla laadida selles foorumis
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Hinnavaatlus ei vastuta foorumis tehtud postituste eest.
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