Re: mp3gain (was: CDbakeOven issue(s))

From: David Magda (dmagda+trace030823_at_ee.ryerson.ca)
Date: 09/14/03 

Date: 14 Sep 2003 17:31:57 -0400

Henrik Herranen <leopold@assari.cc.tut.fi> writes:

> Unfortunately mp3gain only works directly with MP3 files, but the
> algorithm it uses is no secret, so applying it to other kinds of
> files is just a matter of programming. (I know, this might not be
> very helpful.)
>
> However, if interested, have a look at the ports collection, or
> http://www.geocities.com/mp3gain/

There is a vorbisgain utility (audio/vorbisgain/) that adds headers
to Ogg Vorbis files.

The algorithm in question is called "ReplayGain":

    http://replaygain.hydrogenaudio.org/

It cannot be done to WAV files since they are 'raw data': there is no
meta-data about the audio stream available.

For a high quality format you may want to look at FLAC:

    http://flac.sourceforge.net/

It is a lossless compression format (you can convert FLAC<->WAV/CD
many times without any degradation). It also has headers so that you
can store artist, track, etc. information. 

-- 
David Magda <dmagda at ee.ryerson.ca>, http://www.magda.ca/
Because the innovator has for enemies all those who have done well under
the old conditions, and lukewarm defenders in those who may do well 
under the new. -- Niccolo Machiavelli, _The Prince_, Chapter VI

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