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Dolby Pro Logic IS surround sound
Authored by: mclayville on Oct 21, '03 03:12:04PM
Dolby Pro Logic is NOT a synthesized "faux" surround scheme. It is a second generation surround sound decoding system developed by Dolby Labs, the first generation being Dolby Surround. See this Dolby whitepaper for a little history on the subject. Next time try to get your facts straight.

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Dolby Pro Logic IS surround sound
Authored by: clallo on Oct 21, '03 04:15:41PM
Geez. You don't need to get nasty! While Dolby Pro Logic II *can* decode Dolby Surround encoded sources, its biggest innovation is it's ability to *generate* a 5.1 surround field with from normal stereo input From The Dolby website:
"Pro Logic II from Dolby Laboratories gives you multichannel surround sound from any stereo source—CDs, tapes, videocassettes, TV broadcasts, AAC files, you name it. No matter if you're listening to Stravinsky, the Stones, or a Schwarzenegger movie, you'll get the realistic, involving sound you'd expect from a 5.1-channel system. Pro Logic II brings all of your old audio software into the 21st century, giving you many of the benefits of Dolby Digital from ordinary stereo software. With its elegantly simple circuitry and the smoothest steering logic ever, it's a very rare processor indeed—the kind you'll want to leave on all the time, so you can always enjoy surround sound, no matter what the source. Probably the most innovative feature incorporated in most receivers is the Music mode, which creates a rich and enveloping surround ambience from stereo sources such as CDs. ... An optional Matrix mode can be included to produce surround sound from mono material.
So I don't really know how I didn't "have my facts straight". Perhaps this is a case of the pot calling the kettle black? Regardless, the point of the hint was how to enable true Dolby Digital 5.1 surround via the Optical output of the G5 and DVD player 3.3. And in that regard, it appears to already have already helped someone.

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Dolby Pro Logic IS surround sound
Authored by: Durandal on Oct 21, '03 05:46:43PM

Dolby ProLogic is a method of encoding multiple channels into 2 stereo channels. Receivers which cannot decode ProLogic will just pick up the two stereo channels and that's it. It's not "fake" surround sound. It's just a more primitive form of it than Dolby Digital, which can support more than 2 discrete channels.

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Damien Sorresso



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