jj@alice.UUCP (01/22/85)
Emphasis mine. >*****So even if the sampling theorem that states that >double-the-high-frequency is enough were relevant, 44K isn't high >enough.**** > >I've compared an analog pressing of a recording made digitally >with a 50K sample rate to a CD of the same thing at 44K, and >the vinyl was *definitely* a better sound. What I don't know, >unfortunately, is whether the CD was reprocessed from the 50K >master or was recorded in parallel at 44K. > >-- >Ed Gould mt Xinu, 739 Allston Way, Berkeley, CA 94710 USA >{ucbvax,decvax}!mtxinu!ed +1 415 644 0146 Well, Ed, I'm sorry that you don't think that the Nyquest limit ("that double the high frequency is enough " is relevant. I'm sick and tired of seeing "well, even if clearly and firmly established science with a strong theoretical and experimental basis were relevant" and other such stuff and nonsense. Sampling theory simply isn't in question, Ed, at least around here. We make decisions and calculations every day based on the Nyquest Theorem, decisions that would fail utterly if it were false. These decisions and calculations seem to invariably work. Funny that. As far as vinyl sounding different than CD's, we've been through this whole part before. The way tha Vinyl is mastered and reproduced does several things: 1) There is a dB or so midrange drop, compared to a CD of exactly the same source, that makes the CD sounds "harsh". 2) The "difference" or L-R signal is artificially emphasized on Vinyl. This "expands" the "hall" or "soundstage" significantly. It's clear that until recording engineers understand the CD medium as well as they do Vinyl, things will sound different. It's also clear that what you like is a matter of preference, not absolute right/wrong. There are indeed problems with the CD process. They are, in my opinion, due to the fact that the ear is NOT linear, and as a result signals that are not directly audibly to the ear can be heard as IM products in the presence of complex signals, i.e. music. -- TEDDY BEARS PROTECT PENGUINS FROM WALRUSES "I wish I was home again, back home in my heart again, it's been such a time since my heart's home to me. ..." (allegra,harpo,ulysses)!alice!jj