Re: [microsound] Binaural

[BJM <bent@xxxxxxxxx>]

Yes, moiré is the same phenomenon as beating: with two different 
resolutions of screen, the dots sum in some areas, forming larger 
dots... er, though I guess the effect takes place entirely in the 
positive cuz you can't really cancel out dots. Beating -- I'm sure there 
must be a more scientific term for it -- takes place when any two 
similar periodic media interfere. Another example is when you see 
flickering monitors in a film: the frame rate of the film and refresh 
rate of the monitor interfere with each other.

That M Theory sounds pretty cool...

b

dbuchwald wrote:

>I was wondering if there is a relation to what Bateson called the moiré effect (two
>repetitive patterns create a third pattern in the perceiver)?  Or -- maybe that's
>ridiculous, far out or too new agey -- there is this M theory of the cosmos: "In
>cosmology there is a  new theory called M Theory or Membrane Theory. It has largely
>superceded the old "string theory." The hypothesis with M Theory speculates that the
>universe emerged out of two vibrating membranes and, and where the vibrations on the
>membranes met created all the particles in the universe as we happen to observe
>them." "Re: The universe and the "moire effect"",
>http://superstringtheory.com/forum/stringboard/messages20/15.html.
>
>To think that the ears also contain two vibrating membranes ...
>
>Dagmar
>
>Robert Pietrusko wrote:
>
>  
>
>>> > Has anyone come across these before? Briefly, it involves playing one
>>>      
>>>
>>>> frequency into one ear (through headphones) and a very slightly different
>>>> one into the other ear. Then, just as when the signals combine in the air to
>>>> form a beating effect, the brain combines the two signals and produces its
>>>> own beating effect. There is no real physical effect as it is all purely in
>>>> the mind and it can apparently be used for enhancing certain brain functions
>>>> as well as investigating the hearing system and the brain. Could be an
>>>> interesting one to investigate in the context of a piece of microsound-type
>>>> music....?
>>>>        
>>>>
>>>Actually I think it IS a physcial effect that happens and not as much
>>>as a brain effect.  You may notice it better with speakers and
>>>not so much as with headphones.
>>>      
>>>
>>Hi Everyone,
>>
>>It is in fact a brain effect because the percieved pitch is the
>>*average* of the beating tones.  This average is not physically
>>present in the air.
>>
>>two tones  :  999 Hz  and 1001 Hz  results in -
>>percieved tone (999+1001)/2  = 1000 Hz
>>this is non-linear and a result of the hearing system.
>>
>>it is quite pretty to think about.
>>
>>hope this helps.
>>
>>take care,
>>
>>bobby.
>>
>>--
>>
>>_one thought : many forms_
>>
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