25 Dec
2010
25 Dec
'10
12:39 a.m.
Hi,
On Friday 24 December 2010 14:53:44 Q wrote:
I'm wanting to batch process a bunch of wav files,
normalising them all
to -0.3 dBFS.
I thought I could do this with normalize/normalize-audio, but it doesn't
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:
" --peak
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 statement there is bullshit. Scanning a wave-file for maximum absolute
sample and then scaling that to make the file fit into [-1:1] with the abssolute
of the maximum sample at 1 _is_ normalization. That is the very definition of
normalization.
That would be okay, except I want them normalising to
something other
than full scale.
Given the fact that [-1:1] is just an arbitrary setting, there is no problem
with normalizing/scaling to [-0.9:0.9] or within the range of -3dB instead of
0dB...
Is there a quick and easy way to do this?
I seem to recall that normalize-audio can actually do this. Otherwise have a
look at the fine tools contained in libsoundfile.
Have fun and a merry Christmas,
Arnold