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Contant Peak, Constant RMS, How to get a fixed value for peak and RMS
terataz
post Dec 12 2012, 21:32
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Hi, we are trying to set a default standard for the volume of the audio files we are working on.
We are looking for a tool that, given a bunch of mp3 files, will be able to normalize them at a given db.

For example : 0db for Peak levels and -9db for RMS.

Ideally, we'd love to use sox as we can chain it with other effects we're using without the need to convert multiple time the file from mp3 to wav and back.

We tried sox gain -n , sox gain -ne, sox gain -nb, sox loudness but none of them keep a constant RMS without varying the Peak level as well.
Any help appreciated.
Thanks
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mjb2006
post Dec 13 2012, 03:38
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As above. Why do you need exactly peak 0 and RMS -9 dBFS? If you are going for consistent perceived loudness, this problem was solved a while ago with ReplayGain.

I note you've asked about this at least twice before:
http://www.hydrogenaudio.org/forums/index....showtopic=72664
http://www.hydrogenaudio.org/forums/index....showtopic=93180

This post has been edited by mjb2006: Dec 13 2012, 03:42
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