Copy better than the original?

I just copied a brand new Hyperion CD. I then ran the Nero Disc Quality
program to determine how many C1 and C2 errors there were. The results were
superb. The maximum number of C1 errors was 28; there were no C2 errors.

As a matter of curiosity, I ran the original disc through the same test. It
was much much worse. Is this possible? How can a copy have fewer errors
than the original?

Thanks,

Norm Strong

You are not measuring errors in the data, but errors in the reading process.
The 2nd disc was just easier for that drive to read.


wrote in message
. ..
I just copied a brand new Hyperion CD. I then ran the Nero Disc Quality
program to determine how many C1 and C2 errors there were. The results
were
superb. The maximum number of C1 errors was 28; there were no C2 errors.

As a matter of curiosity, I ran the original disc through the same test.
It
was much much worse. Is this possible? How can a copy have fewer errors
than the original?

Thanks,

Norm Strong

On Sun, 2 Apr 2006 12:24:27 -0700, wrote:

I just copied a brand new Hyperion CD. I then ran the Nero Disc Quality
program to determine how many C1 and C2 errors there were. The results were
superb. The maximum number of C1 errors was 28; there were no C2 errors.

As a matter of curiosity, I ran the original disc through the same test. It
was much much worse. Is this possible? How can a copy have fewer errors
than the original?

Thanks,

Norm Strong


C1 errors are correctable. They can be the result of smudges,
scratches, weird power spikes during reading, solar eclipses, druids
passing wind on the other side of the planet, etc.

When you made a copy, unless you copied in a RAW mode, the data was
corrected, so you started with a clean copy of the data. If the CD-R
is in pristine shape and the original pressed CD is kind of rough, but
serviceable, you might get a disc that's a bit easier for the drive to
read. Could also be that the druids were doing something else at the
time.
---------------------------------------------
Thanks.


MCheu

Hi Norm.
One thing bear in mind the faster you try to copy the greater the risk
of error's creeping up, less work for the 'sample and hold' circuit.

Have a peep at-: http://electronics.howstuffworks.com/question487.htm

Davy