Re: arsclist ELP Laser Turntable; Full 3-D mapping of groove?

[Mwcpc6@xxxxxxx]

In a message dated 12/05/2002 7:56:26 PM Eastern Standard Time, 
smolians@xxxxxxxxx writes:

> 
>  The problem here is that the waveforms won't be exact from copy to copy.  
> No
>  record is exactly on center, and it's not likely that each copy will have
>  the needle start playing from the identical spot.
>  
>  Steve Smolian
The idea of the mathematical correlation function is that it aligns the data 
so identical components match.  This should be possible to within a 
wavelength of the highest frequency present, on a millisecond time scale.  It 
might even be that the high frequency noise components of the master, being 
the same on all copies, would act as a clock signal for the process, 
completely eliminating variations in reproduction speed.

Mike Csontos
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