on their computer
, a big problem
is the varying volume
which the sound
comes out of the speakers
. This problem is especially bad with headphones. As an example, someone is listening to Nirvana
and they have adjusted the volume to their liking. Nirvana's song
ends and Soundgarden
comes on. Soundgarden's music file
may specify a different volume, making the sound very loud or very quiet.
Volume normalization attempts
to take care of this. By analyzing the volume on each file, it can try to compensate
for the ones which are louder
, making them come out of the speakers all at about the same volume.