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From: taras@utgpu.UUCP
Newsgroups: sci.electronics
Subject: Re: A 3000Hz notch in CDs
Message-ID: <1987Jul16.222805.5650@gpu.utcs.toronto.edu>
Date: Thu, 16-Jul-87 22:28:05 EDT
Article-I.D.: gpu.1987Jul16.222805.5650
Posted: Thu Jul 16 22:28:05 1987
Date-Received: Sat, 18-Jul-87 07:35:25 EDT
References: <19530@ucbvax.BERKELEY.EDU>
Reply-To: taras@gpu.utcs.UUCP (T. Pryjma)
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Organization: University of Toronto Computing Services
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In article <19530@ucbvax.BERKELEY.EDU> kavaler@berkeley.edu (Robert Kavaler) writes:
# It will be interesting to see how the record companies are going to
# add this new CD feature.  If they tell people ahead of time, the price
# of non-notched CDs will rise dramatically (can you imagine the resale
# value of a non-notched CD when the notched CD has an audible and possibly
# bothersome notch).  Maybe this way the record companies can produce
# 2 versions of each CD, one with notch (costing $14.00 each), and one without
# notch (>> $14.00 each).  I also wonder if there will be any marks on
# CDs that are notched.  How does one know?  Are they already notched??
# Anyone have a spectrum analyzer handy?
# 
# Robert Kavaler


Since the human hear does have a notch in it's hearing range of about 3khz,
I wonder just how noticeable this will be.  I would rather doubt that the record
companies, atleast some of them, would want to sell a non notched CD at any 
price considering how much they are fighting for the legislation that makes
use of it.  I also wonder how much of a premium will be charged for DAT units
that do have the special anti pirate circuits defeated?  They will be available,
and they should not be all that hard to build.
-- 

			 	Taras Pryjma 
				uucp: taras@gpu.utcs
				bitnet: tpryjma@utoronto
				Bell: +1 (416) 536-2821

Ok then, It's settled.  I will have my computer call your computer and work
it all out.  .......   But wait ...... it won't do any good, never mind.