Re: Set top boxes and digital noise... why? Grrrrr...
- From: "Bazzer Smith" <me@xxxxxxxxxxx>
- Date: Sat, 10 Jun 2006 21:09:51 GMT
"h" <h@@at@@howiem.com> wrote in message
news:d3Big.83898$wl.36943@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
If my STB's reception drops a bit (say a butterfly flies past the house)
and it loses the audio from the channel I'm watching, why in hell does it
have to make that bloody loud crackling "I can't decode this, do you want
a go, human?" noise?
Can't believe it's not something the STB could mute out - they have some
sort of error correction don't they? If the audio isn't reconstructable
why can't it just hold the last good value and fade it to 0v over a few
milliseconds?
Do all STBs degrade audio so disgracefully?
I'm sure it hurts my speakers...
I think the problem is that in some cases a poor signal would
just cause a slight degradation in sound, which most people
would find acteptable, or at least better than nothing, so it
will 'play' the low quality sound. As the STB is not human
it cannot really tell what is acceptable or not.
Also I don't know how much error correction they have,
error correction consumes bandwidth so I suspect they don't
have much if any?
Even if they do have some error correction it won't be
fool proof so some 'noise' will pass the error correction
and come out a pretty horrible sound.
Another point is that if they work to some sort of standard
then all boxes should produce the same output for
a given signal?
Maybe your box has a few bugs or maybe your signal level
is more prone to producing bad sounds?
h
.
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