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<blockquote data-quote="tymoto21" data-source="post: 8469740" data-attributes="member: 589669">a long time ago i saw a program about ghosts.an old factory or something was supposedly haunted and many of the people that went in there said they saw things or felt strange when they were inside, the second they went outside they felt better and didnt see any odd things.they debunked the ghost theory when one of the care takers placed something on his desk and noticed it vibrating and move.&nbsp; Then they found a huge fan in the basement that was imbalanced and causing an in audible tone throughout the building.fixed the fan and the &quot;ghost&quot; experiences stopped.and sound goes sooo much farther then what humans can hear.for instance the brain in influenced by 40kHz waves when listening to the violin.&nbsp; they played a violin song for listeners while monitoring brain waves, then they filtered out any sounds/harmonics above 20kHz.&nbsp;&nbsp; Not only did the brain react differently but the listeners also liked the un-filtered version more.&nbsp; even though humans can only hear to at best 18kHz.also also show me one person that likes sitting in 45-50hz at 160db... (its a joke but its generally uncomfortable)sound does crazy things</blockquote>

[QUOTE="tymoto21, post: 8469740, member: 589669"] a long time ago i saw a program about ghosts. an old factory or something was supposedly haunted and many of the people that went in there said they saw things or felt strange when they were inside, the second they went outside they felt better and didnt see any odd things. they debunked the ghost theory when one of the care takers placed something on his desk and noticed it vibrating and move. Then they found a huge fan in the basement that was imbalanced and causing an in audible tone throughout the building. fixed the fan and the "ghost" experiences stopped. and sound goes sooo much farther then what humans can hear. for instance the brain in influenced by 40kHz waves when listening to the violin. they played a violin song for listeners while monitoring brain waves, then they filtered out any sounds/harmonics above 20kHz. Not only did the brain react differently but the listeners also liked the un-filtered version more. even though humans can only hear to at best 18kHz. also also show me one person that likes sitting in 45-50hz at 160db... (its a joke but its generally uncomfortable) sound does crazy things [/QUOTE]

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