Can someone explain the difference.....

Discussion in 'Home Cinema Buying & Building' started by x Flib x, Feb 4, 2009.

  1. x Flib x

    x Flib x
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    Can someone explain how Virtual Dolby Digital is and how it works (from a consumers perspective), SRS TruSurround TX and Dolby Digital and why no TVs these days have Dolby Digital, seemingly preferring VDD?
     
  2. Trollslayer

    Trollslayer
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    'Vritual' is trying to simulate the effect of multiple speakers without having them, never quite works in the real world but sound good in demos.
     
  3. x Flib x

    x Flib x
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    So its lying then. basically just pro Logic?

    real dolby digital is preferable then.....


    Wheres it gone anyway? Only references to dolby digital I can see have 'virtual' in front of them.
     
  4. x Flib x

    x Flib x
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    Bump?
     
  5. Member 639844

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    No its not pro logic, thats a surround sound method that does use 5 speakers, but it doesnt have dedicated .1 channel and the rear speakers are mono not stereo, so they dont pan from left to right. Pro logic sound is also poorer quality than DD, but it can be transmitted within the normal stereo signal bandwidth of normal tv transmissions and this is what the Virtual feature within the tv uses.

    Real Dolby digital is preferable and much higher quality !!!

    Virtual surround modes are just modes tv manufacturers include in tvs as an extra feature, the idea being you switch to this for films to get a sort of surround effect from two speakers. It doesnt really cost them anything to add this feature, but adding true DD5.1 would cost and thats something all manufacturers try to keep down as much as possible in their products. It works by simply adding a slight delay to certain sounds in the signal and for a tv its simple but effective enough.

    I suppose the logic behind it is they assume if your really after true 5.1 cinema sound you'll have a separate system for this anyway, certainly no tv could match even the most basic surround systems. An example would be the all-in-one dvd systems manufacturers like Panasonic produce, I'm guessing they expect you to opt for this if your want proper 5.1, and giving you the option to purchase this separately if you want is better than forcing it on you by packaging it into a tv as standard and increasing its price by 2-300+ quid. I certainly wouldnt bother paying for this anyway.
     
    Last edited by a moderator: Feb 25, 2009

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