I have some CDs with audio written to BASF EMTEC discs.
These have become corrupted. The audio plays, but has a constant almost cyclical noise embeded in the audio.
The disks have many errors, but the audio is continuous without any mutes or glitches.
Here is a sample
Can anyone identify what the cause might and how it might be corrected. I have tried Exact Audio copy to try and extract clean audio, but with no success.