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Discussion Starter · #1 ·
I'm having a problem with the timing of sound coming through my receiver compared to the TV. In essence, the sound is a half sec or so later than the action/talking on TV.


I currently have Dish Network with hdmi running to HD TV. Sound is from Dish receiver to a Sony HTB via component cables.


Is there a hookup change I can make to clear up this problem?
 

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Quote:
Originally Posted by LebBuck /forum/post/15513996


I'm having a problem with the timing of sound coming through my receiver compared to the TV. In essence, the sound is a half sec or so later than the action/talking on TV.


I currently have Dish Network with hdmi running to HD TV. Sound is from Dish receiver to a Sony HTB via component cables.


Is there a hookup change I can make to clear up this problem?

I think you're a little confused about a few things. Component cables don't carry sound; they only carry video. If you're referring to the red/white audio cables, that would make more sense. Optical/coaxial audio would be much better, since they can carry dolby digital from your Dish receiver (if your HTIB can decode it), and that would just be a single cable.


Also, if you've got a HTIB, why are you listening to audio through both the HTIB and the TV? The reason you shouldn't is precisely the situation you're describing. Just use the HDMI for video (i.e. turn the speakers on the TV off) and just use the audio from the HTIB. Most HTIB's/receivers have an audio delay setting that you can tweak to get the sound/video to synchronize better.


EDIT: I just read your post again. It's unclear if you're trying to get audio from both the TV and the HTIB, or just the HTIB. If it's just the HTIB, you're halfway there (assuming you're using the right cables). Let us know the model number of the Sony HTIB and we'll let you know if you can synchronize the sound.
 

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Discussion Starter · #3 ·
Thanks for the insight. Your edit is correct. We turn the TV sound to 0, and use the HTB for stereo sound. The model # of the HTB is Sony HCD c700. It's probably 9-10 yrs old.


Ideally we want the HTB sound as it is surround (5.1) and gives us better sound than the TV. TV sounds actually isn't that bad (9 month old Sony 50" plasma) but I guess the HTB would give me the best sound.


In the end we want the best option for the best sound. If that means running the optical cable you mention above, that is fine. If that means my HTB's technology is too old to handle the sound I want (need), that is fine as well. Just trying to get this fixed.


Greatly appreciated.
 

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This seems to be a common problem. If it was a video processing lag, the sound should be earlier than the picture.


It's unclear to me how audio is getting to your receiver. From your TVs audio out? Analog from the Dish RX? Digital from the Dish RX?
 

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Discussion Starter · #5 ·
Currently the audio we use comes from the Dish HD receiver via red/white cables and straight into the Sony HTB. Hope that answers your question.


Also, I went back and checked and actually the sound does come before the actor's mouths move. So sound first, TV movement second. At least that's how it looks... it's really close.
 

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Here's the HTIB manual download page:
http://esupport.sony.com/US/perl/mod...=HCDC700&LOC=3


The HTIB does have optical in for audio. You should definitely use that, so that you can get true 5.1 sound. The red/white RCA cables can only carry 2-channel (2.0) sound. I don't know how much this will affect the sync issue, but IMO you should make this change and re-evaluate before spending more time on the sync issue. It could be that the audio is lagging because the sat box is slow at downmixing the 5.1 to 2.0 so it can be output over the red/white cables (however, that seems very unlikely).


If you need an optical cable, don't buy an expensive one. You can probably get a decent price at Target or something, or even cheaper online:

optical cables: http://www.monoprice.com/products/su...02&cp_id=10229


Another thing to consider trying it to change the video settings in the sat box. For instance, if you have the sat configured to ONLY output 1080i, that means the sat box will be doing video processing on all content that ISN'T 1080i before sending it to the TV. And then the TV will be doing more processing to turn the 1080i into 1080p. All that processing can be slow, and could be causing the video to lag behind the audio. I know you said the audio lags behind the video, but it seems like any change that lets you affect the speed of the audio and/or video might help you get closer to the "right" amount of lag to sync them up. So I think this is worth a try. Try configuring the sat box to output the "native format" of the content you are watching (which could be 480i, 720p, or 1080i -- you might have to "enable" each of these formats individually). That way, the sat box can skip any processing and just output the native format, and the TV can convert it directly to 1080p, which might be a faster total path. Or vise-versa -- make the sat box upscale everything to 1080i (or 1080p, but I don't think the sat box can do that) before sending it to the TV. That might give the "right" amount of lag, too.


Many TVs have features that can be turned on and off that affect the lag as well. Search the internet for "audio sync" and your TV model number to see if people have been posting about such options for your specific TV.


Alternately, if you get a receiver with HDMI support, the receiver can generally fix the sync issue using a configurable delay, or an automatic sync feature.


-Max
 

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Discussion Starter · #7 ·
Max... great info... I'm going to try the optical cable. Monoprice has them for like $3 for a 1.5 ft run... and since I'm also buying an hdmi switch and other items, will just bundle in there. Thanks!
 

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Discussion Starter · #8 ·
All, I was messing around with some wires last night and noticed something that I have a bigger question/issue with.


I have an hdmi run from my Dish 722 Receiver straight to my Samsung plasma, approx 10 ft of total hdmi cable.


The problem... the sound difference when watching straight TV from my Dish... between what is heard vs. what can be seen are remarkably far apart... half second maybe?


As you can tell, I'm relatively clueless about this stuff. Any thoughts on what is happening?
 
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