I'd like to normalize multiple .ogg files. Unfortunately replaygain treats multiple files as an album and normalizes according to the loudest file. I'd like to normalize each file to 0dB.
I tried replaygain -f --no-album *.ogg without success.
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Replaygain is not normalisation, it's just a volume adjustment on a file/album. Normalisation is making each file peak at a nominal 0dB, a permanent re-encode. Replaygain is a post-process output adjustment & can be tweaked at any time. – Tetsujin Mar 09 '17 at 18:14
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does that mean I cannot get my audio files louder with it? which command-line tool can do it? – user430 Mar 09 '17 at 19:10
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Digital audio has a maximum 0dB peak. Replaygain is just like a volume knob on your hifi, it turns the entire thing up or down, but has a nominal 89dB noise-floor. Basically - you need to know what you actually want before you can ask us how to 'fix' it. – Tetsujin Mar 09 '17 at 19:16
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I'd like to turn the volume knob up, in a way that each file has their max peak at 0 dB – user430 Mar 09 '17 at 19:33
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then you need to normalise, not use replaygain. For that, we'd need to know what software & OS you're using. – Tetsujin Mar 09 '17 at 20:06
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ubuntu 16.04, might normalize-audio do the trick? – user430 Mar 09 '17 at 20:51
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I don't know the OS or the tool, sorry. Give it a try. – Tetsujin Mar 10 '17 at 06:17