Exact Audio Copy !exclusive!
At the end of a rip, EAC didn't just give you a file. It gave you a detailed log file. It told you exactly which sectors had errors, how many times it had to re-read each one, and whether any data was lost. It was a certificate of authenticity for your rip.
Standard rippers read the CD once and save the file. If the drive misreads a sector due to dust or a scratch, the error becomes a permanent "glitch" in your song. EAC reads every sector at least twice. If the two reads do not match, it knows there is an error and will re-read that sector up to specified number of times to get the correct data. exact audio copy
If a sector was so damaged that it couldn't get a match, EAC wouldn't guess. It would use a technique called "synchronization." It would search the stream of data for known, valid patterns and rebuild the track frame by frame, often recovering data that other programs would have just dropped. At the end of a rip, EAC didn't just give you a file