Sound dropout on BBC 1 HD
steven_good2
Posts: 91 Forum Member
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Sorry if this has been posted before, I was watching BBC 1 HD earlier this morning and had sound drop outs, the Mast I receive freeview from is Emley Moor according to the Digital UK site and my TV is a Samsung PS51E490.
Has any one else having problems?
The only way I can get sound back is to go to another channel and then go back to BBC 1 HD
Has any one else having problems?
The only way I can get sound back is to go to another channel and then go back to BBC 1 HD
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Comments
http://forums.digitalspy.co.uk/showthread.php?t=2143233
http://forums.digitalspy.co.uk/showthread.php?t=2142949
Seems to be a Samsung issue.
Doesn't occur in some programs but seems to be when studio based.
This is normally a software issue on the TV that is unable to cope with the switch from 1080i to 1080p seamlessly. The Freeview spec calls for the capabiity to handle mixed progressive and interlaced group of pictures within the same broadcast stream.
http://www.trustedreviews.com/news/bbc-begin-broadcasting-in-1080p
Perhaps an upgrade/update/change in their code & mux kit and/or firmware has caused this new incompatibility issue...
*around March 2011
I agree that the P/I switching is the most likely cause, but no-one has confirmed that officially, sadly.
Or do we just notice one day the problem(s) have gone away?
Freeview
Transmitters
Links
BBC
ITV1
Ch4
Program makers.
Sub contract Engineering
TV set makers.
etc.
I get my picture fault on all the HD channels.
If you have a YouView or Freeview HD box you can watch BBC 1 HD using that and no more drop-outs.
The problem has been established to lie with some TV sets ....
And the BBC has said it may try to do something to off set it ...
But the issue lies with the TV set..... And the manufacturers to sort it
But will a change cause more problems with more sets .. ??????
Btw we had similar issues with digital systems over 20 years ago
Which organisations have definitively stated that the problem is solely with the TV sets?
But the set makers DO have form for NOT building kit that conforms to the fine detail of the Specification of the Broadcast Standards... and when the broadcasters utilise an advanced feature their sets fall over...
[e.g DVB-T: Split NIT. DVB-T2: 25p/50i switching.]
Some bits can be resolved by software/firmware upgrades on modern sets, fortunately. But such development takes time, as fixing one bit can break another so needs extensive testing. Sometimes it's a hardware issue, though.
Very occasionally the broadcaster gets caught out, too: e.g. the BBC HD 5.1 sound 'glitches' every 2^64 frames due to a faulty electronics card not conforming to a specification; and that took 6 months+ to get a firmware fix developed, tested and rolled out. In the meantime the glitches continued - less annoying to glitch than to lose the 5.1 surround sound? imho, yes.
There's no doubt the BBC have made a change that's caused issue(s) for some sets... but many other sets are unaffected...
If I had to gamble on it I know where I'd place my money on the fault laying.
http://www.a516digital.com/2016/05/freeview-hd-sound-problem-solution-found.html
Says completed 19 May 2016
As it cured the sound faults?
Clem
How are sony getting in delivering the update .....
. Just Because the BBC have limited their coder to not do PNS
does not mean the problem is fixed .....
PNS will be used in the future "all AVC / AAC /T 2 world"
In the past, there seemed to be plenty of updates for my Sony TVs. However, as the units are quite old (in Sony's terms) and are no longer current it wouldn't surprise me if they didn't provide any further firmware, which would be really annoying. However, when the units were current, firmware updates were pretty frequent, when needed, and it was easy to update via USB. The issue here is that PNS is part of the specs. and it's clear that my TVs don't comply with the standards, so I'm hoping that there will be an update. If Sony doesn't come across with something, then I'm not sure what I'll do .....
Clem
Hopefully Nigel can cast some light on your problem as he is a Sony dealer.
Well, a fault is always possible, but the dropouts have stopped as quickly as they started, and pretty much follow eveyone else's experiences. I do know of at leat one other EX owner on AVForums who also had audio dropouts, so my money is on a firmware issue somewhere. However, if it is a fault, with the TV being at least six years old it'll be a good excuse to buy something new
Clem
Too old. The TV is outside of the 5-year JL guarantee. As the TV generally works OK, if it is a tuner fault I'll add something like a Manhattan HD receiver in the short term, if I don't decide to replace the set. Now is not really the right time to buy something new, especially as the 4K/HDR/Dolby Vision thing still seems to be in a state of flux, and buying a set that is just what I have now is pretty pointless.
Clem