vlevel - 0.5.2-1 main

VLevel keeps your music from making you jump out of your seat, and it
keeps you from having to fiddle with the volume constantly. It's
different from other dynamic compressors because it looks ahead. You
can think of VLevel as someone who knows your music by heart, and
turns the volume up during quiet passages, but smoothly turns it back
down when he knows a loud part is coming. It's great for making CDs
to listen to in your car, or to play background music on your
computer.
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VLevel is currently a LADSPA plugin, a JACK plugin and a command-line
filter. You can use it with many Linux audio programs including XMMS,
GStreamer, GLAME, GDAM, and others, and you can use it in shell
scripts to level your music before burning a CD.
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The commandline filter is also useful for levelling podcasts before
(encoding and) publishing.