NetNews Usenet Archive 1993 #3/NN_1993_3.iso/spool/rec/audio/19248

Internet Message Format | 1993-01-23 | 1.6 KB

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From: [e-mail] (Jan Bielawski)
Newsgroups: rec.audio
Subject: Re: MiniDiscs -- What Are They?
Message-ID: <[e-mail]>
Date: 21 Jan 93 22:27:24 GMT
References: <shetline-150193110142@128.89.19.95> <[e-mail]> <[e-mail]>
Organization: Computervision, San Diego, CA
Lines: 25

In article <[e-mail]> [e-mail] (Michael J Kobb) writes:
<In article <[e-mail]> [e-mail] (S S Sturrock) writes:
<
<   Play a disc without and the bass lacks guts, vocals are distant and
<   scibilant, treble is mushy and all over the shop, put the disc on top and
<   the bass gets more grunt, vocals come more to life (still not as good as
<   vinyl by a long chalk) and the top end smooths out and focuses.  Take the
<   disc out and the sound returns to state #1, what else is it going to be?
<   Just don't ask why.
<
<So sue me.  Why does it work?  Have you tried blind A/B tests of
<this phenomenon to ensure that you're not hearing what you want to
<hear?  Spectrum analysis?

    Note: I'm not sure I got the attribution lines correctly.  Anyway:
This subject has been discussed so many times.  Last time I looked the
consensus seemed to be: CD players are not shielded properly.  Without
the disc the CD vibrates a bit more and the focusing servo works harder.
The resulting EM noise is picked up by the improperly shielded analog
stages.

    Jan Bielawski
    Computervision, San Diego
    [e-mail]