Playsation sync problem over optical

Discussion in 'Playstation Forums' started by elicash73, Jan 12, 2008.

  1. elicash73

    elicash73
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    Hello, I'm running the audio from my ps3 over OPTICAL to my sherwood amp and I'm getting a slight delay that is very annoying. What's odd is that if I run the sound over HDMI to the television the menu tones on the ps3 sync up with the presses perfectly but over optical through the amp sometimes I don't even get the menu tones when I select a new option.

    This is the same for DVD and Bluray.

    Can anyone suggest a sollution?

    Thanks
    Eli
     
  2. Moogle

    Moogle
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    I would you try a different optical cable to rule it out. The cable may be faulty by the sounds of it.
     
  3. Teahupo

    Teahupo
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    It won't be the cable, it will just be the difference in the time that your amp takes to process the audio code and the time your tv takes to process the video code. When you put it all through one piece of hardware (your tv) it can syncronise it. But your tv does not know how long your amp will take. Many amps have a function that allows you to put in a delay to correct this. Check your manual.
     
  4. steverobertsbbc

    steverobertsbbc
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  5. elicash73

    elicash73
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    Hey folks thanks for your replies.

    My tv has an optical out built into the set. Do you think it will it pass through the audio signal from the HDMI connection to the optical output, thereby correcting the sync issue?

    Someone has suggested that the PS3 menu tones may not be registering correctly as they are too short a burt of information for the amp to handle. Unfortunately the amps delay are in the range of 0-5ms and make a negligible difference
     
  6. Teahupo

    Teahupo
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    Definately worth trying to pass the audio through the tv via hdmi. If it works it could make a bg improvement.
     
  7. elicash73

    elicash73
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    I tried it but the problem remains. I presume it's not worth trying outputting over COMPONENT, as that doesn't deliver 24fps, correct?
     
  8. Levi3D

    Levi3D
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    No, as with all digital cables, they either work or simply don't. So it won't be that.
     
  9. Moogle

    Moogle
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    I beg to differ. At least with optical cables that is not the case. I've experienced optical cables before that have been tempermental and work most of the time but now and then have issues with sound quality. If what you say is true that wouldn't have been the case.
     
  10. Teahupo

    Teahupo
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    A bad optical cable could cause intermittent sound loss or loss of quality. If you've found one that causes an audio lag you should contact Nasa... you just slowed down the speed of light
     
  11. steverobertsbbc

    steverobertsbbc
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    Shame. Even if it had worked (which it does on my Sony X3000 screen), it would likely have only passed a stereo signal, rather than the full 5.1.

    Your only realistic options are to buy the JS Technology box I suggested earlier, or upgrade to an amplifier with built-in lipsync compensation.

    Steve
     
  12. elicash73

    elicash73
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    Thanks.

    What sort of price am I looking at for an amp with HDMI?

    edit: or better still an amp with good delay functionality
     
  13. Pincho Paxton

    Pincho Paxton
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    Lol..:D
     
  14. elicash73

    elicash73
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  15. steverobertsbbc

    steverobertsbbc
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    No - it will have an infinitesimally small delay.

    My own experience suggests a delay of anywhere between 60 and 120mS is required, depending on panel and mode.

    Steve
     
  16. amita

    amita
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    Dude, what amp do you have - my cheapo Denon amp lets me set whatever audio delay i want - i have to have it set at 130 ms to get the lip sync correct. I'd be surprised if your amp doesn't let you do this.
     
  17. Germinator

    Germinator
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    I hooked my PS3 up to optical tonight and one strange problem I get is when I fast forward a DVD and then play it, the sound goes really low in volume. This happens with DD5.1 and DTS5.1
     
  18. raymondo1

    raymondo1
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    no offence but a faulty optical cable could not cause a delay.
    impossible
    obviously there are conflicting opinions over whether the optical interface degrades sound quality (it is technically inferior to the spdif i/f) but to even suggest it could simply delay signal is paramount to nonsense
    i have no wish to offend moogle, but you should perhaps research this subject before posting regardless of your moderator status
    i love this board, but find its massive quota of ill-informed, unproven, unscientific posts which people tend to believe, rather disconcerting!
    :)
    in fact i just re-read the whole thread, just in case i missed something
    i will bet my god damn house its not the cable, that is borderline impossible - any genuine scientists out there feel free to engage in this conversation
    anyone who thinks that , clearly has not worked in electronics nor knows much about the aforementioned optical interface
     
  19. elicash73

    elicash73
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    Thanks for your replies everyone.

    I begrudgingly decided that I'd have to get the JS Electronics box. I've got it maxed out and although I feel I could do with 100ms more, it's close enough to perfect sync that I can just get on with watching the films.

    Interesting company. Thanks to steveroberts for recommending them to me.
     

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