Eben King wrote:
> On Wed, 10 Sep 2008, ronan wrote:
>
>> Eben King wrote:
>>> I've got an album whose tracks are in mp3 format. The gain for these
>>> tracks was set per track, so the gain for track x is different than
>>> the gain for track y. While this isn't particularly annoying, it is
>>> in this case because several tracks merge continuously into the next
>>> and it is rather annoying to have the loudness change abrubtly in
>>> the middle of a song.
>>>
>>> So, how can I renormalize these tracks as a set without re-encoding
>>> them? I have "mp3gain", but I can't make it DTRT. Both "-a" and "-r"
>>> leave sudden volume changes on some track transitions. Is it
>>> possible the original encoding software modified the actual data?
>>> Would that affect mp3gain?
>>>
>> Could it be that the software that you are using to play-back the
>> MP3s does not honor the MP3Gain flag that is in the MP3 files? The
>> player software must contain code to find that tag, and honor it.
>
> It's possible, but that means the differing playback volumes (and
> clipping in some cases) are hardcoded into the data. Too see for sure,
> I could export the mp3 -> wav using mpg321 (I think) then open the wav
> with snd (if I have it), unless there's a simpler way...
>
Or try a playback program that you are sure supports the MP3Gain tag
(XMMS, Amarok, banshee, etc.)
--ronan
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