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Tuesday, June 21, 2005

Digital Quality

Something I should also get off my chest. It grates on me when I hear people promote 'digital quality sound' or video or any other thing you see.

Unless you're that Data character from the 'Next Generation' Star Trek shows, no way you can see pictures or hear sounds in a digital form. In order for you to see or hear anything like a TV show or a song, it has to go through a 'digital to analog converter,' a.k.a. DAC.

Not all DACs are created equal, there's some very good ones in high-end CD players, but they're all trying to do the same thing, take the one's and zeroes and translate them into an analog signal.

And any time you digitize an analog source, such as a song, you're losing data. The difference in DACs is how they fib in terms of filling in the gaps.

In any case, for satellite promotions to emphasize a 'digital' signal is nonsense. The technology wouldn't allow transmission of an analog signal, so of course it's digital. It's as much a selling point as beer 'in glass bottles.' For that glass-quality.

Or selling newspapers with 'print quality' content.

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