which dolby for surround sound?

just need some guiding into which dolby is real surround sound. I read somewhere that prologic is just surround sound made from stereo audio. Am i right?

i am going to get an amp for my ps3 so i need to know which has true surround sound

thanks

Ok I'm not 100% sure but I think Pro-Logic is made up of three front channels (left centre and right) and a mono (same sound for left and right) rear channel all passed thru stereo cable.

The PS3 is capable of 7.1? digital sound although 5.1 is all you should really need consisting of front: left centre and right channels, rear left and right as well as a dedicated sub-woofer (the .1) channel.

The main consideration when choosing a surround system should be the inclusion of HDMI switching which will reduce the number of cables (hence expense) and also improve picture and sound quality.

The PS3 has HDMI version 1.3 output but recievers carrying this feature are expensive if you are not concerned about having lossless audio (you will struggle to tell the difference unless your speakers are mega expensive) or if your TV is compatible with Deep Colour (increased pallet) it's probably not worth chasing after HDMI 1.3 compatibility.

The sound processing is relatively new tech and hence somewhat over-priced. I would suggest buying as good a speaker system as you can afford (these should be OK for years) and a relatively cheaper receiver to tide you over until the cost of the newer tech falls.

Good luck and enjoy your surround (I am still saving for sound after blowing all my cash on a PS3 and a 46" Bravia) :)

yeh i have a set of surround sound speakers and an optical cable so all im looking for is a decent cheapish amp. there was one for $300 but it had pro logic and im that's not proper surround sound (thanks to first post). im just looking to find out which type of dolby in it, which i know now.

any other hints/tips on buying an amp would be appreciated