Pro-logic surround decoder.

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r.placella

Member
Joined
Mar 8, 2005
Messages
6
Location
Cork, Ireland
Hi everyone!!! :grin:

I was just bouncing through the web looking for the schematics of a dolby pro-logic surround decoder.............
And all I found was a "passive surround system"
http://www.amsky.com/~cirkuit/media/surround.html :shock:
and a Surround Sound Decoder Mk2
with a massive 8khz dac and for cristal clear sound!!!:shock:

So I was wondering if someone of you guys had any idea of where I can find something a bit more decent? :roll:

!!!!!!!!!!!!!!Thanks to everyone!!!!!!!!!!!!!!!!!!
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This thread from another forum came up when I googled:

http://forum.doom9.org/showthread.php?s=&threadid=35209

I believe the account about anything fancy being quite involved (delays etc.) is correct.

There was a fortuitous kind-of-ok prologic decode that "fell out" of a simple virtualization scheme invented by John Norris (now with Nvidia, at the time with Harman), which was used in a Dell 2.1 system. When John had left the co. and there was finally a little office action, Harman in their wisdom abandoned the patent...
 
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