Re: [SoX-users] Fwd: Using sox to normalize rms and peak

[Mathias L. <le...@li...>]

Hi,

In order to get a desired RMS level you'll have to compress or expand 
the dynamic range of the source material. This cannot be done with the 
normalize function as it is a far more complicated process. The compand 
function can do this, but without experience it won't be easy to set 
parameters correctly.


All the best,

Mathias

Am 2012-12-12 17:20, schrieb Francesco Danieli:
> Hi we are trying to use sox to normalize a bunch of audio files to a
> constant peak and RMS level.
>
> Ideally sox filename -e stats should read
>
> Pk lev dB Overall 0
> RMS lev dB Overall -9
>
> for all our files.
>
> We managed to obtain the first value with -n option.
> What we are missing is how to get RMS level of the files to the desired
> db,leaving Pk level untouched.
>
> We tried "gain -ne"  and "gain -nb" but they both vary the Pk level.
> We also tried loudness option but it does not give us what we are
> looking for.
>
> Thanks
>
> Francesco Danieli
>
>
>
>
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