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UK TV channels - what sound format?

Discussion in 'Home Cinema Speakers' started by bbanduser, Apr 30, 2003.

  1. bbanduser

    bbanduser
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    This is a question I always had,and was wondering if anyone knew this.
    My Denon 3802 does not tell me what the sound format for the different channels are.Some sound great and some are purely ****.Additionally, in some channels the conversation is only through the central,while in others,it is spread across all channels(which is annoying).

    Would be very grateful if someone could shed more light on this issue.
     
  2. mjn

    mjn
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    more than likely nicam stereo
     
  3. bbanduser

    bbanduser
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    All the channels on SKY are on Nicam Stereo?Really?
    I thought some were Prologic and some stereo,while others were Mono as well.Is there any way to tell? Is there any place which lists the sound format of the channels,or does anyone here know?
     
  4. sweetmate

    sweetmate
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    The sound formats that you describe will be dependent on the source material and not the channel per say. The delivery format of analog TV is Nicam Stereo and Digital TV is various types of Mpeg2 stereo with some sky channels (via a Sky+ decoder) also broadcasting in Dolby Digital.

    US shows that have been intentionally encoded with Dolby Surround will usually have a Dolby Surround logo in the opening or closing credits. But I would leave Dolby Surround decoding on as most TV doesn’t suffer from it, but you may want to switch to 2 channel stereo when listening to music. Again it’s up to you.
     
  5. bbanduser

    bbanduser
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    It doesn't matter what is the sound delivery formatof my TV in this case,as I take the output off the Pace digibox.Thus the input to the receiver is not off the TV at all.
     
  6. sweetmate

    sweetmate
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    Ok sorry, the topic said UK TV channels, so I was just trying to provide some fuller info.

    If you have a standard Sky digibox you are listening to Mpeg2 Stereo, and programming on any given channel will be a mixture of mono, stereo and Dolby Surround programs. The sky info bar will have some info on DS encoded films on Sky.
     
  7. bbanduser

    bbanduser
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    But is there no set sound format in which the channels are broadcast?
     
  8. sweetmate

    sweetmate
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  9. bbanduser

    bbanduser
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    How depressing!
    So if there is some channel I am looking at and I like the sound,I wouldn't know what I am listening to?
     
  10. sweetmate

    sweetmate
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    Well if you have the amp on Dolby Pro logic 1 or 2, and the sound is coming from the the center only, then its probably mono, and if it comes from more than the center it is Stereo or Dolby Surround. Most Stereo will have sounds that will be decoded as rear info unintenionally but it should still sound fine.

    As a general rule:

    Old movies before 1976 are Mono (except for big epics).
    Movies post 1976(or old movies that have been remixed) are Dolby Surround.
    Big budget US TV shows since around 1992 may well be surround (check the credits)
    and everything else (most UK shows, music vids, and everything else) is stereo but should sound fine in Surround.

    These are general rules and there are many exceptions.

    If you are hearing dialogue from all the speakers as you mention above then this is probably a mistake and happens when a mono signal is transmitted in stereo and the L and R tracks which should be identical are in fact out of phase. Put this through a DPL decoder and you get that horrid ghostly "dialogue from all the channels" type of sound. (popping the sky box into mono from the options menu for the affected program will sort this problem out)
     

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