[MPlayer-dev-eng] [PATCH] audio filter volnorm2 - two-pass audio normalizer

Rich Felker dalias at aerifal.cx
Sat Jul 30 15:58:38 CEST 2005


On Sat, Jul 30, 2005 at 09:48:17AM +0400, Vladislav Naumov wrote:
> volnorm2 - two-pass audio normalizer.
> This filter should become a 2-pass audio normalizer:
> on first pass, it should analyze audio for peak value
> and store it in file, and on second act as "volume",
> amplifying sound.
> Currently only 1st pass is implemented.
> It can be used to find peak/gain values.
> Something like "cropdetect" filter, but for sound.

I'm against this if it's left as a peak normalizer. Peak normalization
is always incorrect and morons keep asking for it, so they'll do it
more if a filter is available and ruin the sound. Instead it should be
RMS normalization.

Rich




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