2. pc-audio
  3. 1350597823

Comparing rips

I did an experiment and the results are mystifying to me. I ripped the same track with three different programs:

iTunes (error correction on)
dbpoweramp (free version) - AccurateRip verified
Exact Audio Copy - AccurateRip verified

I ripped them all to WAV.

iTunes and EAC returned the same number of bits (there are all "size on disk" numbers):
191,135,744

dbpoweramp returned a slightly larger file:
191,172,608

I then converted them to Apple Lossless files using the encoder in iTunes.

Again, two of the files matched the number of bits, but this time it was EAC and dbpoweramp!:
85,237,760

iTunes returned a different number:
71,892,990

I then ripped the track directly to Apple Lossless from dbpoweramp and dbpoweramp (EAC doesn't do this) and the results were as before:
iTunes: 71,892,990
dbpoweramp: 85,237,760

What is up with this? Has anyone seen these kind of results also?

Thanks for your help.
Mark
markhyams

Showing 1 response by audioengr

audioengr
3,282 posts
 
Dtc is correct, it is probably offset. iTunes does not get it right. In resolving systems you can hear the difference too. Offset is the number of nulls before the music data starts.

I recommend using dbpoweramp always with Accurate-Rip enabled. Gets the data file correct and the offset correct.

Steve N.
Empirical Audio
More to discover