Progressive scan - audio delay: Big issue?

Discussion in 'Blu-ray & DVD Players & Recorders' started by sr78, Jan 15, 2003.

  1. sr78

    sr78
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    I was reading a review of the new Denon 3803 AV receiver, and it said it had an audio delay function to be used when a progressive source was playing.

    I will be upgrading both my TV and DVD player to Pal and NTSC PS, and this comes as a surprise. Do I also have to buy a new AV amp? My SR4200 doesn't have any audio delay functionality.
     
  2. CarlB

    CarlB
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    Search in the plasma forum for 'lip sync' issues - there are loads of threads.
     
  3. sr78

    sr78
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    Yes, but they relate to plasma's. I'm talking CRT TVs here, the Toshiba's and Panasonics.
     
  4. JamesTapp

    JamesTapp
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    The problem is to do with Progressive Scan.

    Plasmas have PS built in, thats why it is discussed so often.

    If you are waiting to view successive fields before you decide what to display on the screen there is always going to be a delay. Some external de-interlacers actually look 4 fields ahead, causing as much as an 80mS delay.

    Some people are more sensitive than others, but the fact is when you are processing the audio and video through different routes, you may end up with lip sync problems.

    Hope that helps.

    James
     

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