"G. Louie" wrote:

In article ,
James Perrett wrote:
"G. Louie" wrote:

My limited testing seems to show that most CDRs typically have quite a few
uncorrectable (E32) errors.

This indicates major problems somewhere. I can't remember the last time
I saw an E32 on a freshly burned CD-R - in fact I don't think I've ever
seen one. I've had very occasional C2 (E12 or E22) but even these are
restricted to cheap blanks that have been sitting on the shelf too long.

If you use Exact Audio Copy to extract your audio then you can be fairly
sure that the extraction is accurate. Many other popular extraction
programs aren't accurate.
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All very interesting. I can get E32 errors all the time, on our realtime
audio CDR decks (HHB and Sony), our computer burners from Panasonic,
Plextor, Yamaha, Lite-On, Pioneer; at all speeds from 1X to 52X, on Macs
(Toast) and PCs (CD Architect). Various cyanine CDRs (Maxell, Imation TDK)
and Mitsui Gold. The number of errors varies a lot. We use a Clover CDX
analyzer, and it's hard to know if it's calibrated well or not. It comes
with a calibration CD with little dots on it, but many parameters are
unclear.

What burner, speed, and error rate analyzer are you using? I am mostly Mac
based, so for EAC I'd have to move to the Windows machine for extractions
- which I would if I felt it was defintely more accurate and reliable.

If the discs I burned were giving any E32 errors then they would be
rejected by the pressing plants that I send them to - I've not had any
E32 errors reported on any of the discs I've sent out for replication. I
use a Plextor Premium with Plextools to check error rates at the moment
but there are a variety of low cost tools that will report errors as
severe as an E32 (also known as a CU or uncorrectable error). Plextools
will give you C1 (E11 and E21) and C2 (E12 and E22) errors as well. A
well burned disc will give a C1 error rate of less than 1 and no C2
errors, let alone CU(E32) errors.

You say you have a Plextor drive. Try using Plextools' error checking
features - the basic CD Test option will work with most of their drives
if you don't have a Plextor Premium and will tell you about any C2 or
worse errors that you have. If you don't have access to Plextools then
Nero's CDSpeed program will give the same information and works with a
wider variety of drives. CDSpeed is also available separately from the
Ahead web site.

Cheers.

James.