Error in Upsampling Certain CDs?

Is your CD clean and scratch free?? That may be the problem. I've also had friends tell me that some of their oldest CDs are deteriorating to some extent. THat could easily cause reading errors too.

No...I'm a nurse. That said...what makes you think that upsampling is your problem?? I've read that "upsampling" is very similiar to oversampling. Doesn't that mean that the same data is read 128 times or whatever? It's a method to make sure that the data being read is correct, right?? I don't see how it could cause that problem...not if your DAC is working properly. If it happens on multiple CDs it might be a problem with your DAC, or possibly your laser/transport. The upsampling errors that Key Metric mentioned above shouldn't result in the sort of distortion that you mentioned...they would just sound less *right*. The CD deterioration that my friend experienced happened to most of his original XTC CDs from the 80s (I don't know if they were UK imports or domestic). I also read a story about someone that lived near an ocean(in New Orleans, I think), and they claimed that the salt air was causing corrosion on their older CDs. I have no idea if any of that is true, but no one really knows how CDs will age. Your copy is pretty old. Maybe the beer helped speed up the aging process? (I usually feel quite a bit older the day after I have one pint too many) You might not even be able to see the damage because it's probably taking place in the metal coating...it might not be a visible to the eye. Maybe it's time for you to replace your copy of The Wall with the remastered version? Hell...think of it as an upgrade.