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Binaural beats or binaural tones are auditory processing artifacts, or apparent sounds, the perception of which arises in the brain independent of physical stimuli. This effect was discovered in 1839 by Heinrich Wilhelm Dove.
The brain produces a phenomenon resulting in low-frequency pulsations in the loudness of a perceived sound when two tones at slightly different frequencies are presented separately, one to each of a subject's ears, using stereo headphones. A beating tone will be perceived, as if the two tones mixed naturally, out of the brain. The frequency of the tones must be below about 1,000 to 1,500 hertz for the beating to be heard. The difference between the two frequencies must be small (below about 30 Hz) for the effect to occur; otherwise the two tones will be heard separately and no beat will be perceived.
Interest in binaural beats can be classified into two categories. Firstly, they are of interest to neurophysiologists investigating the sense of hearing. Secondly (and more controversially), binaural beats reportedly influence the brain in more subtle ways through the entrainment of brainwaves and can be used to produce relaxation and other health benefits such as pain relief.
Using Binaural Beat induction, almost everyone can achieve a very deep, relaxed state of consciousness, provided the proper frequencies are employed.
(ibid above)
binaural beats reportedly influence the brain in more subtle ways through the entrainment of brainwaves and can be used to produce relaxation and other health benefits such as pain relief.
I believe that this is happening with televisions. I have noticed on many occasions that TV's, in general; will randomly emit a barely audible high pitch tone for several minutes.
So the theory is that televisions are emitting these relaxation tones to viewers causing them to become passive and lethargic. The companies providing signals to your TV are controlling this. Certain tones can relax you, make you lethargic, others could make you angry or violent.
Originally posted by GobbledokTChipeater
Interesting. But how does that work if you don't have stereo headphones on whilst you are watching TV? Wouldn't the two frequencies mix in air to produce a third frequency. So then all you would have is a third frequency? Why not just simply play that third frequency then?
From your description I don't think that a Binaural Beat works without headphones. Without headphones all you hear is that third frequency, your brain does not try and equal that frequency with brain patterns.
I believe that this is happening with televisions. I have noticed on many occasions that TV's, in general; will randomly emit a barely audible high pitch tone for several minutes.
So the theory is that televisions are emitting these relaxation tones to viewers causing them to become passive and lethargic. The companies providing signals to your TV are controlling this. Certain tones can relax you, make you lethargic, others could make you angry or violent.
You will probably find that this is caused by the high-frequency flyback transformer in your TV (if you have a CRT). If you have an LCD or Plasma then disregard this. Does the TV still make that sound while muted or with the volume turned all the way down?
...the left and right sounds do not mix together until in your brain. The frequency difference, when perceived by brain this way, is called a binaural beat.
The only requirements are that the tone is heard well enough and that it is below about 1000Hz. Below 1000Hz, the wavelength of the skull is sufficiently small so that the sound waves curve around it.
Originally posted by GobbledokTChipeater
The very definition of Binaural Beat says that each ear must hear a different frequency.
Originally posted by GobbledokTChipeater
I should have said: the very definition of Binaural Beat says that each ear must hear each different frequency before it mixes with the other frequency in the air.
Originally posted by MemoryShock
in the air; that part of the definition is lacking as well because it seems like you're saying that each ear must first hear each frequency prior to them mixing in the air...
It is also commonly suggested that passive listening to binaural beats may not achieve maximum effect. Willingness, ability, and concentration effort may also be necessary.