No problem.
In fact, this discussion started much earlier and you can review the begining here :
http://www.hydrogenaudio.org/index.p...370#entry54479
Tigre said, about all the tracks that return a constant CRC
Quote:
1st block/group of different samples:
Left channel 459820, *845, *867, *880, *891, *893, ... last different sample 460384
Right channel 80% of different samples match left channel, same range (459820 - 460384)
Similar blocks, several 100 samples long, of different samples repeat approx. every 264600 samples.
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This gives in average
(893-845)/(5-1)=12 samples between each stereo error.
This burst is 460384-459820=564 samples long, thus it has
564/12=47 errors in each channel in average, that is about 100 errors in a burst.
264600 samples are 264600/44100=6 seconds, thus there are about 100 errors every 6 seconds in all tracks but the last.
If the CD is 80 minutes, the last track being 20 minutes, there are 60 minutes of repeatable errors, that is
60*60/6*100=
60000 errors, everyone of them being exactly the same, reading after reading
This is the proof that CDS200 errors are repeatable. There is in addition something else going on in the last track.
Quote:
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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.
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This can be a CD with a high error rate : each part can be read with confidence after some trials (errors happening "at different positions each time") , but since the errors are many, there is very little chance of getting all of them right. As soon as you get one part right, other parts get wrong again.
CDS200 errors are very localized, so they destroy the error correction ability for very small parts around them. When an uncorrectable C1 error falls in such a place, it should not be able to be corrected by C2, weakened by the CDS200 error.
It's probably what's happening in Tigre's CD.