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From: dcm@drux3.UUCP (MengesDC)
Newsgroups: net.audio
Subject: Re: The Pepsi Challenge
Message-ID: <1239@drux3.UUCP>
Date: Wed, 24-Oct-84 10:46:20 EDT
Article-I.D.: drux3.1239
Posted: Wed Oct 24 10:46:20 1984
Date-Received: Thu, 25-Oct-84 03:24:48 EDT
References: <1189@hou4b.UUCP>
Organization: AT&T Information Systems Laboratories, Denver
Lines: 33

Munch!

Perhaps the way to take the Digital Chalange is to take an arbitrary source
(perhaps the finest pressings on the finest playback equipment all the way
down to really skuzzed up pressings with cunge in the grooves) digitize it,
reconvert to analog, then through any arbitrary amplifier speaker combination.
Maybe the best way to do the conversion to analog would be to canabalize a
CD player (or inject the bit stream into the correct point in the circuit).
All this probably ought to be under control of a microprocessor, let it
"choose" whether the digital chain is inserted in the circuit.  Then
compare the scores of listeners to the sequnce actually chosen by the 
microprocessor.

Obviously, this is a simplistic approach.  Much consideration would have
to be given to the whole process.  Specifically, the volume levels would have
to be the same (choose your favorite tollerance .5 dB, .05dB, .005 dB or
whatever).  One would, I think, want to have as ideal an environment as
possible so that the reproduced "analog" sound stage is good (broad, deep,
clear, insert your favorite adjective at this point).  Then look to see
what the digital process does to this sound stage.  There's obviously much
more to consider but I think its doable.  Anybody out there in net land
got the skill, resources, and inclination to under take such "live vs
didgital" Challange.

If anyone cares to undertake such an endevor please consult the net for
input on how to "do it" (as in the way the AT&T ISL Denver Audio Club sought
recomendations for their speaker wire Challenge).  If this doesn't bring
about tons of discussion I don't know what will.

                                       Larry Cler
                                       AT&T ISL
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