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From: berry@zinfandel.UUCP (Berry Kercheval)
Newsgroups: net.audio
Subject: Re: Copying dolby-ed cassettes (answer)
Message-ID: <116@zinfandel.UUCP>
Date: Tue, 24-Jul-84 12:50:24 EDT
Article-I.D.: zinfande.116
Posted: Tue Jul 24 12:50:24 1984
Date-Received: Sat, 28-Jul-84 07:45:59 EDT
References: <635@opus.UUCP>
Organization: Zehntel Inc., Walnut Creek, CA
Lines: 16

With respect to copying a Dolby*-encoded tapes with the decoding off,
Mr. Dunn indeed has the correct answer:  Don't!

I once asked our VP of Engineering (now company president) who in
a former life was Engineering manager at Dolby Labs in San Francisco.
He gave me basically the same answer, adding that the Dolby encoding
is very level-sensistive, and unless your deck calibrations match
very closely, ensuring that a signal of n nano-webers/meter squared
on one tape winds up at exactly the same n on the other, it will get all
screwed up.

Berry Kercheval		Zehntel Inc.	(ihnp4!zehntel!zinfandel!berry)
(415)932-6900

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*Dolby and the Double-D symbol are registered trademarks of Dolby Labs, Inc.