How can I selectively control system volume by frequency range (i.e. have an equalizer)?

Sometimes I listen to some audio which has its base/lower-frequencies too weak and its mid-range higher, or the other way around. When that happens, I find myself turning the volume up, then down, repeatedly as different frequencies are either too loud or barely audible. Now, if I have the entire piece of audio saved in some file, I can use Audacity or another such tool to do some filtering which would take care of this (I guess, I'm kind of a newbie on that). But for whatever audio file or stream I'm listening to casually, in a web browser or whatever other app - that's not an option. My question: On a typical Linux desktop enviornment, say Debian or Devuan, can I somehow control the volume level by frequency range? i.e. have something like an equalizer ?