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Subject: Re: mp3 features

Re: mp3 features

From: Magnus Holmgren <>
Date: Tue, 9 Sep 2003 10:59:14 +0200 (MEST)

On Mon, 8 Sep 2003, Leslie Donaldson wrote:

> Which details an loudness algorithm for balanceing playback volume levels
> so that all songs are the same "precevied volume level" as the say
> "fix" sound pressure levels.
> Also I was looking at frawm ID 4.17 Popularimeter. ( How popular or how many
> times have you requested this mp3.)
> Questions:
> 1) If I implement command line tools for these any one interested?
> ( Linux i386/alpha and win 2000 or higher command line.)

There are already tools for this. See
Don't know how portable the command-line tool is though...

> 2) I was thinking of either verifying support in rockbox or adding
> some sort of support. (I havent read the source yet on this subject.)
> Any intrest out there????

No direct support is required, as it does a lossless modification of the
MP3 file.

The latest (beta?) version supports writing the gain information as tags,
which could be supported by Rockbox (though it would have to be
implemented by manipulating the volume). Not important though; I've used
MP3Gain ever since I bought my Archos. :)

Magnus Holmgren
Received on 2003-09-09

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