From: roy@viewgraphics.com (Roy Franz)
Date: Tue, 20 Sep 94 11:10:36 PDT
To: pierre@shell.portal.com
Subject: Re:  art encryption...
Message-ID: <9409201800.AA12283@viewgraphics.com>
MIME-Version: 1.0
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While I was at the NAB (National Association of Broadcasters) show last year, I came across a company in the radio hall that had developed a way to mark audio so that if it was copied, it could be traced back to its original source.  Sampling has made this a significant problem in the recording information.  The person that I talked to did not say or seem to know much about the actual process used, but claimed that the signature could withstand sampling and manipulation.  I don't remember the name of the company, but I think the name started with cyrpto

Roy