tigre

Hi there!

Trying to rip "Grönemeyer - Mensch" (CDS 200 protected) there are several problems - most of them are solved, but one remains.

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First the solved problems FYI:

- corrupted TOC/data Track in 2nd session:
I've tried 4 drives so far. With 1 drive (no-name) the CD is not readable at all, no matter what I try, with 1 Drive (liteon 8x burner) all tracks are shown correctly by EAC, 2 drives (LG 12x DVD + Plextor 121032A) need "special treatment". This means either "detect TOC manually" or the marker / post-it trick.
I decided to use the post-it trick - so far so good.

- C2 errors and interpolation:
The CD is in near-to-perfect condition, so most tracks can be ripped in secure mode with all drives without error-correction kicking in. Test+Copy CRCs for each drive are always identical (1 exeption: later).
Comparing the results between the different working drives showed different CRCs, wave substraction showed small bursts of different samples. The differences were that big that the liteon drive produced audible clicks. On most parts of the tracks there were no audible problems with the lg & plextor, but I found at last two positions where I could hear a slight click produced by the lg drive while the plextor sounded OK. So I decided to use the plextor for ripping as this drive seems to do the best job on interpolation.

- gap of silence problem:
At "normal" secure mode settings (speed: actual, cache on, C2 off) the plextor drive produced a short annoying gap of digital silence (~0.xxx seconds) somewhere in each track.
Lowering extraction speed solved this problem.
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The remaining problem: The last track, > 20 minutes long, containing a 3:xx minute song, silence and a 3:xx minutes "hidden bonus song" is ripped "error-free"/no suspicious positions, but everytime I rip this track the CRC is different (using the plextor 121032A drive). I've tried lowering extraction speed, burst mode ... it's always the same. If I compare the .wav files from different extractions, there are 1-5 different samples at various locations (always in the music parts of the track not in silence). There are a few positions where EAC's error correction kicks in (red lights ...) but it seems to happen at different positions each time. It's not really something I can't live with, because there are no audible problems. I'm just curious about the reason for this. Why can all other tracks be ripped in secure mode, 4x speed with matching Test&Copy CRCs and without audible problems, but the last track can't, even at 1x speed?

Cheers tigre