tom permutt Wrote: > Yes, you are altering the data, by multiplying it by a constant. Yes, > this is not strictly lossless because the results are rounded off (to a > mere 16 bits, or about 5 decimal digits), 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.)
By the way, has anyone thought about normalizing just by the nearest factor of two (i.e., bit-shifting rather than multiplying)? You don't need (or even want, maybe) every song to have exactly the same maximum volume. This would be plenty close enough to keep you from lunging for the volume control, wouldn't it? And now the transformation is pristinely reversible. Me, I don't normalize at all. It's not that I'm worried about the round-off artifact. Rather, I want there to be loud music and soft music, or loud and soft parts of the same piece of music (and "piece" may not be the same as "track"). I can't see any good, automatic way of distinguishing meaningfully loud and soft music from meaninglessly loud and soft discs. The only way, I guess, would be just to listen to them and decide how loud I wanted them to be; but that's not much better than just keeping the remote handy, is it? -- 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
