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Old 21-12-2004, 16:26   #61
rdhw
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Join Date: Oct 2003
Location: Cambridge
Posts: 567
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Re: NTL should switch to a digital only service!

Quote:
Originally Posted by Pob!
I do not agree that analogue should be switched off, as digital is inferior in many ways compared with good analogue reception. The main problem is the compression used - all the channels on digital are heavily compressed, and quality is lost.
Quote:
Originally Posted by Womble
I have to agree with Pob, if you compare a decent analogue picture along side a digital one the Ano one is far better.
Perhaps we should remember that the colour TV system we use on analogue TV (whether it be NTSC, PAL, or SECAM), employs a primitive 3-into-1 compression, which is not only lossy, reducing definition, but also introduces artefacts, such as dot-crawl and strobing, and is very sensitive to noise. The analogue colour TV technology is 50 years old, and about as technologically satisfactory as recording stereo sound by means of a wavy groove physically cut into a rotating disc.

Now, with a digital TV source connected to a display with digital, RGB or Component leads (not composite or S-video), we are at last free of the relics of the old 3:1 compression, and can enjoy noise-free colour.

The quality of the digital TV signal will vary according to the bandwidth given to it by the carrier, which is a commercial decision, and affected by what customers are in practice willing to pay for: quality or quantity?
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