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From: dave@rocksvax.UUCP
Newsgroups: net.audio
Subject: Re: Copy protected records?
Message-ID: <2000010@rocksvax.UUCP>
Date: Tue, 12-Feb-85 11:32:00 EST
Article-I.D.: rocksvax.2000010
Posted: Tue Feb 12 11:32:00 1985
Date-Received: Sat, 16-Feb-85 06:03:16 EST
References: <305@boulder.UUCP>
Lines: 20
Nf-ID: #R:boulder:-30500:rocksvax:2000010:000:957
Nf-From: rocksvax!dave    Feb 12 11:32:00 1985

The bias beat problem may not be a problem.  I haven't looked at any 
deck circuits but it seems that the cassette machines might have low pass
filter already built in that cuts off any frequencies that might
beat with the bias oscillator.  Maybe cheap decks leave this out, but
it seems to me that you would this to prevent high frequency
noise components and the like from the pre-amp from intermodulating
with the bias.

Of course good pre-amps will not have much noise and this would not be
a problem anyways.  If they really are doing this I think is sucks, how am
I going to play an album in the car, which is usually what I tape albums/CDs
for.  Then again a CD won't have any of that nonsense encoded in it.

Another thing to do might be to mount up your favorite 'nail' -:) and play
the album once, that ought to wipe out those offending high frequencies. -:)

Dave

arpa: Sewhuk.HENR@Xerox.ARPA
uucp: {allegra,rochester,amd,sunybcs}!rocksvax!dave