Post by Dfirstname.lastname@example.org Post by td Post by William Sommerwerck
They are probably NOT using the stampers approved
personally by WCF when the CDs were first issued.
Why wouldn't they? It's the cheapest way to reissue the recordings.
Now, if you're suggesting that stampers made from the same tape source will
produce "different sounding" CDs -- I don't want to get into that.
WCF claimed that she could hear the difference between the same
recording produced by different stampers. She only always approved
one. Sometimes she thought the European CDs, produced from the same
digital masters from stampers made in Hannover, produced a more
faithful sound. She even managed to get the engineers to hear those
differences. Again, she only chose one of four or five made for
If they DO use the same stampers produced some 15 years ago - hard to
believe, of course - then yes, the sound will be the same. But they
could have just used a CD to make the new stamper. Actually, as that
is a "clone" of the original recording it wouldn't be bad, just not
the original pressing she approved, that's all.
This matter has been discussed at great length for months on the website of
the Association for Recorded Sound Collections (ARSClist). A major
participant in every aspect of the discussion has been Tom Fine, the son of
Bob and Wilma Cozart Fine. Tom and his brothers exercised control over every
aspect of the project, including the selection of included recordings. My
recollection of his many posts is that he and his brothers required that
their mother's original transfers be used without alteration. They would consent to nothing less.
The full discussion can be found at ARSC's discussion site.
<Sorry, couldn't find a way to display the back discussion from this
How many different ways can you hear the number "eleven?"
CD's work by stamping an encoding of a number which is a precise
snapshot of the sound for 44,100 times every second. If that number is
a zero, then it's silence. If the number is positive then it indicates
the speaker cone should go in one direction for a certain distance; if
it is negative, then the cone should go in the opposite direction.
Just like the grooves in the phonograph record got more wiggles in the
louder parts, on your CD the value of these numbers increased the most
in the louder parts.
In addition to this number, there are additional numbers added which
are used to verify that these numbers are correct. A simple example is
to add a single digit to the original number that when added to the
number, makes the number end in a zero. If it doesn't end in a zero,
then you have a read error. (This is a simplified explanation, but the
principle is the same.)
So, if recordings sound different from one CD to another of the same
recording, then only one of two things can be happening:
1) One of the pressing machines, when read on the playback machine,
resulted in the playback machine detecting more errors, thus there was
a decay of the actual sound, or...
2) People are hearing what they want to hear.
If 1) is the case, then it would be a simple matter to detect: compare
all the numbers on both CD's. If you have enough read errors that
would cause a perceptible decay in the sound, then that's your baby.
Else it can only be number two, because the number eleven only makes
CD players don't read sounds, they read numbers. And either they read
them or they don't. They send these numbers to another microchip that
converts them to speaker directions. Anything else is green felt pen