From: "Antti Kurenniemi" 

Wow - but I bet that would have worked! I mean, if no one bought the
original because of this bright idea, then how could any copies have been
made, eh? 


Antti Kurenniemi
(the current "release mostly crap" (TM) system is almost as effective...)

"Rich Gauszka"  wrote in
message news:461d6a0a$1{at}w3.nls.net...
> http://www.wendycarlos.com/discnotes.html
>
> About twelve years ago a petition was being passed around during a summer
> music conference that protested what then seemed both inevitable and
> awful. Record manufacturers were lobbying for placing a chip in every CD
> player that would detect a steep notch at about 2.5 kHz in CDs, If such
> were found, the equipment would prevent digital copies or clones from
> being made. Hmm... wouldn't such a steep notch, right in the middle of
> where the human ear is most sensitive, not be kinda obvious, I mean,
> wouldn't this be a crummy thing to do to all music recordings from now on?
>
> I tried out the steep filtering in my own studio. Soon I found that others
> had assembled even better demos, "before and after" of the actual
> notch-filter on many examples of music. Listening time ensued. Results?
> Just off the top, you weren't always aware of the notch, especially in
> somewhat distorted, raucous selections. But on well recorded live masters,
> something as straightforward as a solo piano, the damage was plain enough.
> I could hear it right away. On piano and many synth sounds the notch was
> steep enough that a few med-high pitches were almost completely removed!
> After notching, it sounded just as if the pianist had stumbled, and not
> hit all notes equally hard (can you believe it?!) There were other similar
> gaps (LITERALLY!) in other recordings, and I could produce the same
> disturbing problems with my own music here. Yikes! A first-class IDIOTIC
> idea, fer sure!

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