How to enable "sound normalization" in Linux?

Question

linux

Loudness Equalization or Loudness in Windows is a volume equalization function. Smoothes out sound differences, can help, for example, when watching a movie. Everyone is familiar with the frequent situation when people speak in films - it's hard to hear (quietly), when transport is driving, on the contrary, it's too loud.
I suffer for a month, if something turns out to be set with the help of advice, then in the end it's not right. In principle, I can not switch completely to Linux only because of this problem.

Answer 1

Here .

Answer 2

Try alsamixer