From: Rich Gauszka 

mike wrote:
> On Wed, 11 Apr 2007 14:03:08 -0400, "Rich Gauszka"
>  wrote:
>
>> While Philips claims that VTrack is "consumer friendly"
>
>
> Didn't CBS say the same thing about the notch filter they put into their
> vinyl albums to prevent tape copying?
>
>   /m

I thought most ( musicians at least ) regarded that as a rather asinine idea

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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