Quote:
Originally posted by Unregistered
So, I cannot test for C2 accuracy with just copy, because 'error concealment' in EAC may be able to deglitch/interpolate C2 unrecoverable errors.
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Nothing to do with error concealment, you can copy and test and copy with or without error concealment.
The point is to check that C2 turns on each time an error occurs, otherwise, there will be unnoticed errors.
So we need errors. But we need correctable errors. This way, using the CRC comparison of the test and copy mode, we can check if unnoticed errors occured.
On your Sony test, the red lights lit up, therefore there were errors.
The CRC were all the same, therefore all errors were detected with C2. Therefore your C2 is accurate.
Quote:
Originally posted by Unregistered
Hitachi fails this same test miserably on all accounts while producing a high number of C2 errors to EAC: different CRC data, EAC reports "copy not ok" and ripped wavs sound horribly distorted.
To me they are definitely not inaudible.
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I'm talking about
unreported errors.
If EAC tells me "there were errors", no problem, I don't burn.
My problem is when the Hitachi rips brand new CDs without red lights, tells "copy OK", and there still were errors according to the CRC !
Those errors (two or three per
perfect CD, according to compare wav) are completely unaudible.