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From: kls30@duts.ccc.amdahl.com (Kent L Shephard)
Newsgroups: rec.audio.high-end
Subject: DAT degradation
Message-ID: <12579@uwm.edu>
Date: 29 May 91 12:52:29 GMT
Sender: news@uwm.edu
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Approved: tjk@csd4.csd.uwm.edu
Originator: tjk@csd4.csd.uwm.edu


I recently purchased a Pansonic SV-3700 Pro DAT machine.  Now supposedly
you can copy a DAT and get the same quality on the copy.  Now looking
at the way the data is transmitted and calculating the probability of
uncorrected errors being transmitted to the receiving deck I would say
that no degradation in quality would occur.  This is  using the AES/EBU
pro outputs with balanced XLR connections and not the S/PDIF standard with
unbalanced lines. On the other hand I have a person that says that
degradation will be audible in the fifth copy.  So audible that he can't
stand to listen to it.  I say he doesn't know what he is talking about.
I'm hold a BSEE and am about to complete a MSEE.  The person I'm arguing
with holds no degrees and doesn't understand any signal processing theory
or probability.  He says he knows it will happen.  I said that we need
some other opinions or reliable data.

So has anyone actually done about 5 generations of copiy upon copy?

Also could someone tell me the actual function of some filters that seem
to be popular in A/D conversion called apogee (sp?)filters.  Supposedly
the do anti-aliasing and do something to retain the warmth of analog
recording what is this something else.

                  Kent
--
/*  -The opinions expressed are my own, not my employers.    */
/*      For I can only express my own opinions.              */
/*                                                           */
/*   Kent L. Shephard  : email - kls30@DUTS.ccc.amdahl.com   */