what is "stereo surround sound" and "Dolby Surround?" - AVS Forum
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post #1 of 7 Old 07-09-2007, 07:38 PM - Thread Starter
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What is this I used to see on all my VHS tapes and at the beginning of shows like "King of the Hill" that say available in "Dolby surround" where available, and like Jurassic Park VHS that says "Stereo surround."

Does this mean that the movie and/or show was recorded in stereo 2.0 and your reciever can do that Dolby Pro-Logic crap?

Then what does Dolby surround where available mean?


How can they even call it surround sound if it's just stereo that has the ability to be mixed to give the allusion of 5.1 speakers?

Doesn't that make all stereo programs Dolby surround programs.

Note i'm not speaking of Dolby Digital.
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post #2 of 7 Old 07-09-2007, 08:09 PM
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Dolby Surround is the old 4ch matrix that has been around since the 80s. 4channels are encoded into a 2ch carrier. VHS tape, Laster Disc, NTSC broadcast , and when decoded by a receiver that has Dolby Pro-lOgic or newer Dolby Prol-logic2 , decodes the movie into 4 ch , left, center, right and mono surrounds >MOvies have been around on VHS since the 80s and TV broadcasts since early 1990s.
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post #3 of 7 Old 07-10-2007, 12:02 AM
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Dolby Surround uses a Dolby Surround encoder in the mixing process.

If the mixer used another brand of matrix encoder to mix the audio, it is just stereo surround.
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post #4 of 7 Old 07-10-2007, 07:13 PM - Thread Starter
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Thanks for clearing that up guys.
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post #5 of 7 Old 07-12-2007, 07:17 AM
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post #6 of 7 Old 07-13-2007, 12:02 PM
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Quote:
Originally Posted by sammydam View Post

How can they even call it surround sound if it's just stereo that has the ability to be mixed to give the allusion of 5.1 speakers?

They call it surround sound because the 2-channel signal specifically includes surround information that has been mixed in using matrix encoding. Multiple channels can be delivered on a discrete 2-channel carried. If your experience with surround sound started with discrete multi-channel, which is pretty recent (mid-1990s), then you missed the decades of surround sound (music & movies) that preceded.

Sanjay

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post #7 of 7 Old 07-21-2007, 09:45 PM
 
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A Dolby Surround processor sends all the L minus R info to the rear, chops the highs and adds delay if I remember correctly.
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