Re: More bad digital TV news for Joerg?

Martin Brown wrote:
On Oct 29, 10:53 pm, Joerg <notthisjoerg...@xxxxxxxxxxxxxxxxxxxxx>
wrote:
Jan Panteltje wrote:

[...]

I do not recommend to use this scaler, but an other one:
http://www.mir.com/DMG/Software/
But I have not tested that one for aliasing....
Mine was just to demonstrate the need for lowpass when sub-sampling.
Actually it is a nice fft and reverse fft exercise (using the wild wild west fft package).
I don't think they do much outside the time/space domain (and in medical
we rarely do either) but it is rather complicated. You can see
differences between TV sets when interpolating fast moving scenes. Very
important to check that thoroughly before whipping out the credit card.

That is certainly true. I don't find any of the current 50Hz sets
acceptable at all for fast moving sports events. The worst thing I
have seen in shops was water skiing on a dark pond in bright sunlight.
The sets for the most part could not handle high contrast fast dynamic
changes at all and the spray pixellated in a visually offensive
manner. It is not for nothing that all the demo CDs and feeds in shops
are smooth panning of detailed scenes to show off the system
performance to maximum advantage.


Luckily most stores in the US grant you the right to return stuff. Now I do not do this light-heartedly because often the returned merchandise will be destroyed which is sad in many ways. But with one small Philips TV I bought they were not willing to allow me to switch channels in the store. Back at home motion artefacts were horrible. Tried it on the PC, yuck. I returned it the next day. Packaged it very carefully, just like new. The store clerk: "Didn't you at least open it?" ... "Oh yeah, tried it for a whole hour." ... "Hmm, really? Well, then we'll have to scrap it, can't re-sell it" ... "But it's all packaged like new, I was very diligent about that" ... "Nope, it's the policy" ... How sad.



I bought a set with the 100Hz frame rate which uses more processing
power but gives a much smoother image.

Amusingly last night for about the last 15 minutes the UK's flagship
BBC1 programme (in my neck of the woods) was broadcast on DTV with a
random soundtrack that appeared to be a live ambience mike at some
football match. The bad soundtrack continued into the adverts
(trailers since BBC officially doesn't have adverts). This was a
little odd since the programme was about the reintroduction of the
doormouse (subtitles were OK).

DTV continuity announcer wants shooting - in the good old days they
would only broadcast a few seconds or tens of seconds of junk on a
major channel before someone stepped in. In these digital days it is
assumed to work until the phones start ringing with complaints. The
analogue BBC1 broadcast was fine it was only their super new DTV
signal that was screwed to blazes. No mention of it after the
programme and no apology either.


What happens a lot here: A nice Western is announced in the TV guide. Me all happy. 8:00pm approaches and some stupid horror thriller starts. Huh? Ah, we have that new channel guide menu. Click ... click. Shows the Western (_while_ the wrong movie is running!). 2nd Western announced to follow at 10:00pm. Needless to say that wasn't going to happen either and nobody bothered to type in the right title. So we have some useful technology features that are rendered useless by either incompetence at the stations or sloppy management.


Be interested to know if the fault was national or some local *** up
in the NE.


If it's anything like here I am afraid nobody may bother to get to the ground of this.

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
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