linuxaudio.org

On 12/24/2010 02:53 PM, Q wrote:

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> Hello

>

> I'm wanting to batch process a bunch of wav files, normalising them all

> to -0.3 dBFS.

that's high! you will almost certainly get distortion in the analog

stages of cheaper playback equipment with a signal that hot. think

inter-sample peaks.
> I thought I could do this with normalize/normalize-audio, but it doesn't

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> look to be possible. The man page suggests that simply analysing the

> file and raising the level so the loudest peak is 0 dBFS isn't

> normalising, which is news to me:

depends. that's peak normalisation. what you probably want is loudness

normalisation, which adjusts the levels so that the perceived loudness

is constant across tracks.
in a presentation i heard recently, the presenter played a metallica

single, in direct comparison to pink noise at full scale. the metallica

mix was significantly louder. go figure...
> " --peak

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> Adjust using peak levels instead of RMS levels. Each file  will be

> adjusted so that its maximum sample is at full scale. This just gives a

> file the maximum volume possible without clipping; no normalization is

> done."

that is a funny definition of normalisation.
> That would be okay, except I want them normalising to something other

quoted text
> than full scale.

>

> Is there a quick and easy way to do this?

like julien suggested, use a standard peak normalizer and then attenuate

by 0.3dB )(if you are sure that's what you want to do).
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