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292 posts

Ultimate Geek


  # 253900 7-Sep-2009 22:37
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Interesting, I switched to AAC from AC3 during TV3 news, and gak... very laggy audio with AAC.

Quickly, back to AC3.

Only thing I can think of that might be at fault, other than signal, my Realtek HD Audio speaker correction?




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60 posts

Master Geek
+1 received by user: 1


  # 256495 17-Sep-2009 13:50
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I have also noticed the issue firstly on a LA40B650 Samsung, which I reported to Samsung who suggested it was either the aerial (90% signal quality 0 bit rate error) or TV3. As this TV came with a 'free' 22" LCD with Freeview tuner via redemption I waited for it to arrive (3 weeks later), and after checking I get a similar issue with TV3 on it as well (LA22B450). Both have latest firmware (in fact the 22" has 1007 where as website still only has 1005).  As noted in an earlier post the News is particularly bad whereas at other times it can be barely noticable. 

 
 
 
 


251 posts

Ultimate Geek
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  # 256575 17-Sep-2009 17:19
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Yeah, it has got to the stage when I just cant bear to watch TV3. And now that I have become more sensitive to sync issues I notice that C4 is also slightly out (as some others have pointed out in different threads).




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4 posts

Wannabe Geek


  # 263533 12-Oct-2009 18:05
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aaristotle: I have also noticed the issue firstly on a LA40B650 Samsung, which I reported to Samsung who suggested it was either the aerial (90% signal quality 0 bit rate error) or TV3. As this TV came with a 'free' 22" LCD with Freeview tuner via redemption I waited for it to arrive (3 weeks later), and after checking I get a similar issue with TV3 on it as well (LA22B450). Both have latest firmware (in fact the 22" has 1007 where as website still only has 1005).  As noted in an earlier post the News is particularly bad whereas at other times it can be barely noticable. 


I have just bought the same TVs and have noticed the problem on TV3 on the 40" (haven't got the 22" yet).  Did any find an answer or get feedback from Samsung?

60 posts

Master Geek
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  # 264240 16-Oct-2009 12:14
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One of the possible "problems" suggested by the Samsung helpdesk was that the aerial or cabling could affect it, so I want to isolate this as a cause before I go back to them. I now have MediaPortal (1.1 latest SVN) setup as a PVR on my PC with a HD Homerun DVB-T receiver, and will isolate whether the aerial is a problem this weekend. The problem only appears to occur on the TV3 channel but not on the TV3+1 channel, so it really seems to be a codec issue as I believe TV3 use a different sound codec than the other channels. I am surprised that there aren't a lot more Samsung users having a problem or maybe they are just putting up with it.

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Uber Geek
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Trusted

  # 264263 16-Oct-2009 13:51
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Just a couple of points that might be of relevance.

1. I watch Freeview either via a poorly reviewed DVB-T receiver (reviewed on GZ) or via a Popcorn hour which has recorded the signal using gbpvr. Audio and video goes over HDMI to an older model JVC D-ILA 56" RP TV. I have never experienced any audio/video sync issues on any of the Freeview channels

2. Recognising that audio and video over HDMI have different processing requirements in a TV, some HD TV's have a lip sync option that attempts to fix this issues. I think my JVC has this feaature - have never consciously turned it on

This is an interesting thread on the issues

lip sync


I have seen reports that the Samsung TV's don't do audio/video sync that well. Also have you tried using a Freeview STB to see if that acts differently?




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4 posts

Wannabe Geek


  # 264869 18-Oct-2009 17:46
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Samsung have told me that it's a problem with the TV3 Broadcast that "is currently being worked on". By who they didn't say.

 
 
 
 


292 posts

Ultimate Geek


  # 264934 18-Oct-2009 23:03
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A friend who just purchased a 37in Samsung remarked on the TV3 audio synch problem as well.

So it appears to effect Samsungs + HTPCs, looks like a broadcast problem?




HTPC: Antec Fusion 430, Gigabyte GA-MA78GPM-UD2H F7, AMD X2 4850e, Sapphire 4670 1GB, Corsair 4x1Gb,  Adata 128Gb SSD, WD10EARS Green, LG GGC-H20L Blu-ray, Hauppauge NOVA TD-500, Logitech z-5500, Logitech Harmony 525, Samsung LA40B530 1080p, Vista Premium-32 SP2, Catalyst 10.12(Facelift preview), Mediaportal 1.2.3+OneButtonMusic, AC3Filter, Cyberlink Powercinema 6 codec, BLU-RAY: Samsung BD-F7500

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