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Originally posted by Quantum Logic
reply to post by StealthyKat
I listened to the recording you made of the noise. The last 20 seconds is what interests me the most. There is a frequency within that noise that caused an immediate physiological effect, as both my wife and I noticed our pets behavior became one of paranoia for the few seconds it was there each and every time we played it back.
Your recording is extremely important, in my opinion, to finding out what is happening.
We can easily explain the cause of unusual animal behavior seconds before humans feel an earthquake. Very few humans notice the smaller P wave that travels the fastest from the earthquake source and arrives before the larger S wave. But many animals with more keen senses are able to feel the P wave seconds before the S wave arrives. As for sensing an impending earthquake days or weeks before it occurs, that's a different story.
Originally posted by Char-Lee
reply to post by Quantum Logic
A year ago we were both playing an online video game when our ears started ringing and humming, both at the same time. How can tinnitus happen in two people starting the very same moment.
It never went away. This last few months the sound has intensified getting steadily louder, my husband has tried several types of ear drops this week that only made his ears totally plugged. The sound is so loud now it is hard to go to sleep.
The threshold for infrasound is around 140dB at 20Hz increasing to about 162dB at 2 Hz and to 175-180dB for static pressure.Due to the ethical issues regarding testing human subjects, experiments on dogs were conducted at levels of 170dB at a frequency of 0.5 Hz. Curiously the dogs stopped breathing because of lung ventilation due to the high intensity pressure changes, although the 0.5 Hz frequency of the sound acted as an artificial respirator and the dogs showed no ill effects afterwards.Many of the most profound effects of sound are attributed to infrasound in the region of 7Hz. This corresponds with the median alpha-rhythm frequencies of the brain.It is also commonly alleged that this is the resonant frequency of the body’s organs and hence organ rupture and death can occur at high intensity exposures.