Normalize all sound output in Windows Vista (and higher)
One annoying thing in listening to audio / video streams on computer is that almost every stream, application or site has its own loudness. For some music files you might need to turn the volume up, but then your favorite video channel will just scream out loud.
It’s because with the volume setting you set the maximum possible volume for audio output. And not every source uses the full scale – sometimes there are poorly encoded MP3s, sometimes commercials want to be louder than everything else, and sometimes a ballad will be simply played quietly.
For a regular user it means he/she has to turn the volume up and down constantly. Luckily, in Vista, there’s a feature that will put and end to it: Loudness equalization. It will make all sounds sound with a similar volume. It will always run in the background monitoring everything you play and adjusting itself. Just turn it on, set your desired volume level and Vista will take care of the rest. And since it’s on the OS level, all sources are equal.
How to do it? Go to Control Panel | Sound | Playback | Properties | Enhancements and turn on Loudness Equalization. That’s it.