reverse engineering and help with a plug...

[danial stocks]

interesting.. elaborate device.. appears that 4 filters per each channel 
with different freq response feed in antiphase to the opposite channel, and 
then a delay around each channel back to itself..
I remember a very simple circuit in a philips app note for stereo widening - 
it used the antiphase technique as well - feed l into r 180' OOP / vice 
versa.. had a control at one end it fed 100 % across to other channel IN 
phase [mono], other extreme was 24% antiphase [apparently 24% is the best 
maximum stereo image, the effect just breaks up after that.. ] could be 
pretty simple to do the phasing thing [6 opamps as a sketch here - just one 
band tho, no multiband, but width control] now we just need a couple of 
BBD's for the delay section .. Harry?
:>
Dan


> >Does anybody know what this is/does?
> >
> >CARVER  C-9     sonic hologram generator
> >
>
>In short, it enhances the stereo image. I heard a demo once and it was
>pretty amazing (I'm sure having the right recording helped). The clocks at
>the beginning of Pink Floyd's "Time" sounded incredibly
>three-dimensional--you could pick each one out in a 3D space! When it was
>switched off the sound went sort of flat--it just sort of collapsed into a
>thin layer in front of me. Subtle but impressive.

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