Re: AM electromagnetic waves: 20 KHz modulation frequency on an astronomically-low carrier frequency

 


|
| > On Wed, 11 Jul 2007 22:52:17 -0700, Jeff Liebermann wrote:
| >
| >>
| >> (Please learn to trim quotations)
| >>
| >>>Actually the human ear can detect a beat note down to a few cycles.
|
| If you are talking about the beat between two close
| audio frequencies then one can easily hear a beat way
| below 1 Hz.

Based on studies done at Tulane Department of Neurology (mid 60's) the
detection is not in the ear but in the brain.  The process can be taught and
refined though bio-feedback.