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DAE Quality, views?
spoon
post Feb 10 2008, 22:57
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I am convinced the DAE Quality test might not represent a drives ability to read a pressed CD with scratches, rather to read a CD-R with artificial marker damage. When testing about a year ago I found CDs with marker damage did not seem to show the strong drives out from the weak drives (when using real cds with scratches). It should be a good test for c2 pointers, but there seem to be issues (a test on a 230a only got 50% for c2, where in real life c2 pointers are in the 99.99% range).

It is not my intention to take anything away from DAE Quality as there is nothing else that can test drives independantly.


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knutinh
post Feb 13 2008, 14:16
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If you want to make a database of CD/DVD-drives capabilities to do DAE on realistic errors, it would seem that all drives should perform under the same conditions (i.e. exact same CD defects), and compare that to the desired output.

It seems that the most realistic test would be a large set of various naturally "damaged" CDs, each ripped by a number of CD/DVD-readers, and compared to undamaged CDs of the same pressing.

Could Accuraterip be used for such purposes? As long as the CD is identified, at least one has a binary "correct", "non-correct" answer? Does/could accuraterip store the drive manufacturer?

If all accuraterip queries saved the drive used, I agree that the (large) number of correct/non-correct rippings by each individual (or make) of CD/DVD-drive could be an indicator of its real-world capabilities. That is if we assume that there is practically no connection between purchasing (say) a Samsung DVD-rom and treating your CDs very bad. If that was the case, then this test would fail.

-k
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