Through my mulling around on the internet in search for a typical investigative procedures, equipment, etc, I managed to find some very interesting skeptic-based information on infrasound and it's relevance to the paranormal.

What is infrasound? 

The more scientific jargon would be low frequency standing waves, or for the rest of the world, audio frequencies below 20Hz. Humans can naturally detect audio frequencies between 20Hz and 20,000Hz, so it is pertaining to sound that you cannot hear....
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