From my readings here, I understand that C1 and C2 error rates are a very good quantitative measure of CD burn quality.
I also understand that both C1 and C2 errors are corrected by the reading drive (is this also true for a regular CD player?) and that burned CDs with high inital C1 and C2 error rates will degrade at a more rapid rate (is this because the baseline is elevated, or is the actual rate of deterioration accelerated?).
I ask these questions because I just checked a CDR (Sony type 1 cyanine that was in the glove compartment of my car is south Florida for about 2 years) that shows massive errors on Nero CD Quality Check, but still appears to function perfectly well (word processing documents and digital photos - some of the digital photos may (?) be slightly washed out and seem to be grainy, but the effect is subtle and I don't know if I could pick these defects out in a double blind test).
Also, has anybody tested any very weathered audio CDRs to see if there is any audible degradation in sound quality because of high heat and humidity? (should corrected C1 and C2 error rates have any effect on sperceived sound quality?).
Any insights would be greatly appreciated!