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Re: lip sync playing ordinary tv
You need to have a sound speed equalization higher frequencies travel slow,
if you can buy a AV/RF CONVERTER the problem can finish
AV be connected to devices and RF to tv
this can over come that problem
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Unfortunately, the system does not work well around other wireless devices. When watching Blu-rays and listening to music, the system works fine, but when I play my Wii or Xbox 360 the subwoofer loses its connection to the bar and stops working. Sometimes I can play for up to an hour without the sub going out of sync, but it always ends up happening. Many times and several times in a row it would immediately go after sync right after I fixed the problem. Polk lists the wireless sub as a feature but it's actually the worst part of the package for anyone with other wireless devices in the same room.
It's the nature of the beast. The TV has to process the digital video bitstream more than the receiver has to process the audio so the result can be a gradual lagging of the video behind the sound... http://en.wikipedia.org/wiki/Lip_sync Some receivers have a sound delay control which you can use to try to sync them up. You didn
When viewing on Digital TV:- Sometimes Audio and Video signal can not be transmitted simultaneously due to additional process time for the video signal compared to that of the audio signal. Often video signal takes more time than the audio signal to convert from analogue signal to digital signal in the Digital TV. It may result in mismatch of the picture and sound. In the TH-G30/40's HD AV Sync menu, you can adjust the audio signal delay for simultaneous AV signal transmission
1. Delay time can be varied in 10msec steps.(0 to 300ms) 2. Delay time is different between TV Brands.
So you need to adjust the delay time for correct lip-sync. The adjustment is listed in the instruction book page12
Consult the user manual. If you don't have one, it can be downloaded free at Denon's website. Two of the speaker oututs serve multiple functions. Hookup and setup need to be checked. What you want to do is possible as long as you're only using a 5.1 setup indoors.
Lip-sync error is a widespread problem caused when video is delayed and audio arrives too soon. Widespread enough that three different manufacturers make dedicated products to address it, in fact (see review link below for those three).
It is present to some extent in essentially all broadcasts and DVD?s. If you have a recently acquired DLP, LCD or plasma display it may have added enough additional video delay to make it noticeable but lip-sync error comes from MANY sources starting at image capture and continuing through post production and broadcast or DVD encoding and it is cumulative. There is usually enough lip-sync error in broadcasts and DVD's to cause a negative impact on viewer perception (Research done at Stanford showed this.)
Many people don't consciously notice it until it gets very large because it's such an unnatural phenomenon ( audio can't come before the action causing the sound in the real world) we apparently subconsciously avoid looking at the faces and seeing the lips move "after" the sound from them is heard. A study at Stanford proved this causes negative viewer perception even for those who don't notice it so this is something we all need to notice as you already have.
For those reading this who haven't noticed it, take a close look at the LIPS - force yourself to overcome your natural avoidance mechanism that keeps you from looking at the lips - and you will see lip-sync error you never noticed before. I think you will be amazed that you could possibly not have noticed it before. You will be seeing what JC is seeing. I even see it now on CRT TV's
and am amazed I never noticed it so it's very obvious some avoidance mechanism is at work.
And back to JC?s solution: I'd recommend one of these digital audio delay units. That way you can correct for ALL cumulative lip-sync error no matter what its source might be. Any one of these units reviewed will correct it ALL.
With any one of these units you can adjust for perfect lip-sync at the start of each DVD or broadcast and not disturb the image you are watching during that fine adjustment. I have had a Felston DD340 since 2004 (three generations earlier than the DD740 covered in the review) but it still has the most important feature of all these units from these three different manufacturers which is their "plus and minus" buttons on their remotes that allow you to tweak the delay while watching your material without upsetting the video your are watching.
My av receiver has a built in delay of 80 ms which isn't even enough audio delay to offset the video delay my plasma display adds but even if it were it isn't practical to adjust it for the changes in lip-sync error from program to program and DVD to DVD since it overlays the screen with menus when making the delay adjustment. With my DD340 (and any of the units reviewed) all you have to do is press the plus or minus button until you get perfect sync.
Here is the review I mentioned:
if you are saying that your tv has no sound to match the lips movements then you will have to get a tech to repair your tv the problem is in the audio circuit could be a cap or the audio output ic.if you are saying that the tv has sound but it is not syncronizing with the lip movements have your tech check the sync circuit it is possible that the operating voltage is too small to allow the sync circuit to operate.good luck my friend.