Quote:
Originally Posted by willravel
Just FYI, the human ear can usually pick up on everything betweeen 20 Hz and 20,000 Hz. This would mean that the average person could not audibally hear the tone mentioned above. This does not mean it wouldn't effect people. We just couldn't hear it the same way we hear people talking or cars driving by. .01% of the population has perfect pitch. .0000001% (according to census) of the population can hear as low as 12 Hz.
I wonder if anyone could hear something as low as 7.8 Hz. That'd be interesting.
|
Movie makers and haunted house owners are keenly aware of this fact about human hearing, and many will bombard the viewer/customer with sub-sonic frequencies that can make you feel anywhere from slight discomfort to sheer terror as you watch their movie or tour their haunted house. The effect diminishes as you get further away from the source.
I read somewhere a theory that so-called mind-readers are able to "hear" the low frequency pitches, and therefore actually hear your thoughts.