libasound2-plugin-equal - equalizer plugin for ALSA

$ vim ~/.asoundrc
ctl.equal {
	type equal;
}

pcm.plugequal {
	type equal;
	# Modify the line below if you don't
	# want to use sound card 0.
	slave.pcm "plug:dmix";
}

# pcm.equal {
	# Or if you want the equalizer to be your
	# default soundcard uncomment the following
	# line and comment the above line.
pcm.!default {
	type plug;
	slave.pcm plugequal;
}

# alsa force-reload

$ alsamixer -D equal

$ vim ~/.bashrc
alias alsaequal='alsamixer -D equal'