Re: [gentoo-user] [OT] ogg/mp3 volume

[Pandu Poluan <pandu@poluan.info>]

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On May 19, 2012 7:00 PM, "Andrew Lowe" <agl@wht.com.au> wrote:
>
> Hi all,
>        Is there a way to change the "volume" of a mp3/vorbis track? By
volume, I'm referring to lining up several tracks on your
computer/phone/tablet/thingy, setting the one volume level and then letting
them play. For example, the first track will be quiet, of all ironies my
Led Zeppelin tracks are all like this, the next track will be loud, the
next track "in the middle", in other words it's Goldilocks and the three
bears with audio tracks.
>
>        Is there a way I can either during the ripping process, or
subsequently in a post-processing, make the "average" volume of all my
tracks the same?
>
>        Any thoughts greatly appreciated,
>

What you're looking for is called "replay gain" (alternative spelling,
"replaygain"). Basically, it's a two-step process : (1) analyze the
'effective loudness' of a track, and (2) add a tag indicating the
difference between the measured 'effective loudness' with a reference level
of 89 dB SPL

http://wiki.hydrogenaudio.org/index.php?title=ReplayGain

The above wiki article might be out of date with regards to the available
software. Try asking around in the HydrogenAudio forums. They are a bunch
of friendly guys ;-)

(PS: my handle there is "pepoluan", although honestly I haven't dabbled in
any forum discussions for several years.)

Rgds,

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