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Originally Posted by clarkjohnsen 
All Telarc can do is make sure their electronics don't surreptitiously invert. |
"All Telarc can do..." And that is all they need to have done to make Bob Katz' comment accurate. He never mentioned any voodoo or anything else. Why are you pretending he did? Talking about strawman arguments...
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Fact is, there is no way in the world to calibrate a reproduce system so that it always produces "absolute polarity". Since it has been found that LPs are cut in either polarity willy-nilly, which way is right? Ditto CDs. How can a system be "calibrated" when the source is randomly distributed between the two polarities?
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The fact that many releases have polarity errors on them is irrelevant. Those are errors on the LPs and CDs, not in the system used to reproduce them. More straw....
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Even more to the point, how do you know that any LP or CD is "correct"? Are you privy to information that the rest of us aren't?
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Lupo posted a picture of the initial attacks of the kick drums in the wave I posted earlier. How can there be any doubt as to which is correct and which isn't?
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How do you imagine the digital signal is "absolutely defined"? Were that true, how could polarity vary so, on CDs? (Again, 50/50.)
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Non sequitur of monumental proportions.
Or are you just here to prove that your book isn't outdated? Did your publisher put you up to this?
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What's defined, I think, is the signal electrical polarity, not the acoustic polarity that is our topic here. There is no fixed relationship between the two.
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There is no fixed relationship if people don't care. If care is taken to keep the electrical polarity of the recording/mixing/mastering chain then that realtionship does exist.
Alistair