WTF is vlevel?

A vlevel filter normalises the audio volume of an input source. About vlevel

Installing vlevel

Follow the howto from upstram

Configure pulseaudio

Append to /etc/pulse/default.pa

load-module module-null-sink sink_name=vlevel
load-module module-loopback sink=vlevel
load-module module-ladspa-sink sink_name=ladspa_out sink_master=vlevel plugin=/usr/local/lib/ladspa/vlevel-ladspa label=vlevel_stereo control=,,,,

Restart pulse

pulseaudio -k

Ensure that everything is loaded correcly

grep pulse /var/log/syslog

pavucontrol

Run pavucontrol and you should find “LADSPA Plugin VLevel” as a new sink. Link everything you want to be normalized by the filter through that sink. You also have a new LADSPA Stream now! Link it to your usually used output sink.

Its only for music!

It adds a noticeable delay to the audio so dont run video streams through it.