On Fri, Oct 05, 2012 at 07:12:00PM +0200, Georg Holzmann wrote:
> Do you just want to adjust the loudness between multiple files?
> (this means there is just a constant gain for every file so the they
> are similar on average)
> Or do you also want to change the loudness inside one track?
>
> For case 1, you have to measure the loudness somehow (best way would
> be to use a loudness standard like used in EBU R128 - see https://auphonic.com/blog/2012/08/02/loudness-measurement-and-normalization-ebu-r128-calm-act/),
> and then you apply a constant gain, combined with a limiter (and
> maybe compressor) if the gain is positive.
Or use ebumeter (real-time, GUI) or ebur128 (batch processing).
The latter combined with some scripting and sox (or doing it
manually) will provide what you need.
Both available from:
<http://kokkinizita.linuxaudio.org/linuxaudio/downloads>.
LAC paper on the theory behind this:
<http://kokkinizita.linuxaudio.org/papers>
Ciao,
-- FA A world of exhaustive, reliable metadata would be an utopia. It's also a pipe-dream, founded on self-delusion, nerd hubris and hysterically inflated market opportunities. (Cory Doctorow) _______________________________________________ Linux-audio-user mailing list Linux-audio-user@email-addr-hidden http://lists.linuxaudio.org/listinfo/linux-audio-userReceived on Sat Oct 6 00:15:01 2012
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