Hi Mark,
"Davini, Mark" <[EMAIL PROTECTED]> writes:
> I read the "Myths" within the Minidisc.org page, and everything Mr.
> Woudenberg writes makes perfect sense to me, BUT - - - - Could
> someone please tell me WHY I REALLY DO hear a difference between
> discs then?
It's important to conduct a blind experiment to verify your findings,
best would be an R/A/B or A/B/X test where you play to the subject
(your friend, say) a sample of disc one and say "This is disc 1", then
a sample of disc two and say "This is disc 2", then a sample one of
those two again, chosen at random (hopefully chosen ahead of time and
written down on a list) and say "Which one is this?". You must change
the discs out of sight and hopefully out of earshot of the subject.
If you can get someone else who doesn't know what's written on the
list to verbally prompt the subject, so the subject cannot read
anything in your voice as you play the unknown sample, that would be a
double blind test and the results are reliable if conducted properly.
If your subject can still reliably detect which disc is which then you
are really onto something. (There are measures of what constitutes
statistical reliability given the number of tests you conduct, but
you'll need to ask someone else what they are).
What you'll be onto unfortunately is a defect in your MD equipment or
in the blanks. Should you pursue it further you would eventually be
able to trace the problem to disc error rates and a problem with the
error correction logic or perhaps something in your analog
reproduction chain that is really marginal and affected by the MD
drive system. (I call that "cheap and/or broken analog stages").
The magical aspect of digital audio that many people seem to have a
tough time coming to grips with is that the audio is being represented
in terms of symbols (symbols on a disc, over a cable, etc). Symbols
don't live in the real world, they're in this abstract space, perfect
and immutable. And providing the error correction logic is working,
you'll be able to read them perfectly out of that space back into the
real world.
You're right Leon, maybe I do see an ethereal, religious aspect to it :-)
Rick
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