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

[Pandu Poluan <pandu@poluan.info>]

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On May 21, 2012 11:22 PM, "luis jure" <ljc@internet.com.uy> wrote:
>
> on 2012-05-21 at 22:14 Andrew Lowe wrote:
>
> > I have no intention of applying whatever process to the media machine,
> > the tracks on that remain as ripped. I only want to "fiddle" the tracks
> > on the memory stick.
>
> your files are mp3, right? what you want to do is fairly simple, just use
> media-sound/mp3gain
>
> just direct your browser to http://mp3gain.sourceforge.net/ and get some
> background. i haven't found much documentation on-line, just install it
and
> run mp3gain -h.
>
> i guess this is what you need, because:
>
> 1. the application does not perform normalization (which would mean
> decoding and re-encoding ), it only adjusts the replaygain tag in the mp3
> file;
>
> 2. the adjustment is not based on peak amplitude, but on the ReplayGain
> "loudness" algorithm (don't know much of the details, but basically it's
> RMS calculation with some psychoacoustic adjustments, based on the
"lodness
> curve").
>
> check these options:
>
> -r - apply Track gain automatically (all files set to equal loudness)
> -k - automatically lower Track/Album gain to not clip audio
> -a - apply Album gain automatically (files are all from the same
>     album: a single gain change is applied to all files, so their
>     loudness relative to each other remains unchanged, but the average
>     album loudness is normalized)
>

Unfortunately, that only works with mp3 files.

Since the OP explicitly mentions ogg, I can only recommend foobar2000.

That said, if OP is willing to transcode his ogg (and flac, if any)
collection to mp3, then I agree that mp3gain is the best, failsafe
alternative (i.e., since it tweaks the "global gain" parameter of the mp3
file, virtually all music players will be compatible).

Rgds,

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