linuxaudio.org

On Fri, Oct 05, 2012 at 07:12:00PM +0200, Georg Holzmann wrote:
> Do you just want to adjust the loudness between multiple files?

quoted text
> (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-normalizat...),

> 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:
   .
LAC paper on the theory behind this:
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)
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