Well, it seems a lot of folks have different experiences to me regarding
the frequency of uncorrectable errors on audio CDs. Rather than
responding to each posting individually, I'll just summarise:

1. Those of you seeing lots of CU errors must either be treating your
CDs like frisbees, or be using CD players or CDROM drives that are not
performing correctly. In my personal experience, genuine CU errors are
very rare.

2. On the few occasions I've had a CD with CU errors on it, I've yet to
see EAC actually produce a clean result - it still ends up with
uncorrectable errors, no matter how many times it re-reads. It is
nearly always quicker to just play the CD and let the audio player's
error concealment do its stuff, recording the SPDIF output. Sure, the
resulting file has some interpolations in it, but so too does the EAC
rip, and often the SPDIF stream is audibly better.

3. Phil mentions that the SPDIF stream will rarely be bit-accurate. If
you're talking about discs that have only C1 and C2 errors, then any
SPDIF stream that is not bit-accurate is in principle broken. Some
years ago I did a test to prove that it was possible to produce perfect
CDR copies from audio CDs, and it involved recording the SPDIF streams
from a pressed CD and a DAE'd CDR copy thereof. The two streams were
indeed bit identical.


-- 
cliveb
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