[LAU] Level Matching

[Dominic Sacré]

On Thursday 06 November 2008 09:28:51 Luigi Curzi wrote:
> --- Gio 6/11/08, Fons Adriaensen <fons at kokkinizita.net> ha scritto:
> > I was just going to ask: is it possible to modify an MP3
> > (without fully decoding/recoding it) in such I way that
> > only the level is changed ?
>
> with replaygain script (a frontend to replaygain, aacgain, mp3gain ecc
> ecc) in amarok, you can analyze an audio file and normalize it without
> re-encoding; "it will store the information in tags"

mp3gain can also change an mp3's loudness in a way that does not require 
support by the player (i.e. without replay gain tags).

The limitation of this method is that the volume can only be changed in 
steps of 1.5 dB, as is explained here:
http://wiki.hydrogenaudio.org/index.php?title=MP3Gain