jimmy Wrote: > I have started ripping my CDs to FLAC for use with my squeezebox and am > using dbpowerAMP. However, I have had the volume normalisation turned > on!! I presume this means: > 1) I have been altering the data itself (not just the metadata) > 2) The FLAC files are not strictly lossless so I cannot get back to the > original WAV. > > Can anyone confirm the above 2 comments please? I am thinking I'll need > to start the rip process again using ReplayGain....ouch! > > Jimmy
This is correct, strictly speaking, but don't panic. Yes, you are altering the data, by multiplying it by a constant. Yes, this is not strictly lossless because the results are rounded off, so that dividing by the same constant will not necessarily recover precisely the same value. (In Pat's example, multiplying by 2, it will, in fact; but you might be multiplying by 2.0001 instead.) This is not the same kind of data loss you get compressing and decompressing a file with a lossy algorithm. Anyway, if you use ReplayGain, you do the same multiplication when you play the file, so you are not going to hear anything different. The difference, such as it is, would happen if you tried to un-normalize the file back to the original for some reason and then processed it again. So, yes, if you are planning to rip the disks and then throw them away, and then try to burn replacements at the original volume, and then rip those and renormalize them to a *different* volume, you had better get cracking on reripping now. Or, you could spend your time listening to what you have, and do all that later, after you think up a reason why you would need to. -- tom permutt ------------------------------------------------------------------------ tom permutt's Profile: http://forums.slimdevices.com/member.php?userid=1893 View this thread: http://forums.slimdevices.com/showthread.php?t=13583 _______________________________________________ ripping mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/ripping
