Den 2022-05-29 skrev Christian Gollwitzer <aurio...@gmx.de>: > Am 29.05.22 um 00:45 schrieb Stefan Ram: >> "Steve GS" <Gronicus@SGA.Ninja> writes: >>> Subject: Automatic Gain Control in Python? >> >> Automatic Gain Control in Python is trivial. You have a list >> of samples and normalize them, i.e., divide by max. Slightly >> simplified >> >> [ s/max( samples )for s in samples ] >> >> (where sample values are normalized to the range -1,+1.) > > No, that's not it. Loudness is perceived in a different way, the crudest
<snip> > music is incredibly loud, and you might have wondered, how they do that. > > Google for "Loudness war" and "dynamic range compression" if you want to > understand it in detail. > I have no suggestions for solving the problem but it struck me that you might be interested in looking up a standard called EBU R128. Start with youtube and you find lectures/demos. Python connection; There is a Python package called ffmpeg-normalize which contains an implementation of EBU R128. AFAIK it works on files, not streaming audio. /Martin -- https://mail.python.org/mailman/listinfo/python-list
