Automatic Gain Control for JACK, LADSPA, Winamp, and many more— github port from sourceforge
VLevel is a tool to amplify the soft parts of music so you don’t
have to fiddle with the volume control. It looks ahead a few
seconds, so it can change the volume gradually without ever
clipping. Because the volume is changed gradually, “dynamic
contrast” is preserved.
This repository is a fork of the original vlevel code since the
last release of the original source
is from 2004. Although this, the code is robust and it works pretty
much unmodified nowadays. We imported from the
old CVS repository
and added a new module in order to use it as a JACK client. After
several months of test in a working production (a 24/7 broadcasting
environment) we can confirm that the software is reliable.
We know VLevel to work in Linux and OSX environments. At this moment
we cannot test it on other platforms, but we encourage you to
collaborate.
See the file INSTALL. For the impatient: sudo make install
Original VLevel is a filter, meaning you pipe raw CDDA
(Compact Disc Digital Audio)
data to it, and it outputs the leveled data.
Example:
vlevel-bin < in.cdda > out.cdda
There are options to control the length of the look-ahead buffer,
the strength of the effect, and the maximum amplification, as well
as the format of the raw data. Type vlevel-bin --help for
details.
VLevel works also as a
JACK Audio Connection Kit client.
For example
vlevel-jack --length 22050 --max-multiplier 20 --strength 0.8
will create 2 capture ports and 2 playback ports on the JACK graph
that can be used in combination with any other JACK client.
VLevel also works as a LADSPA plugin. See the
Linux Audio Developer’s Simple Plugin API website
for a lists of hosts that VLevel can plug into.
a Lv2 Plugin and a GUI (especially for vlevel-jack)
Please do. VLevel is licenced under the GNU Lesser General Public
License (LGPL), for more information, see the COPYING file.
There is documentation in the docs directory. Documentation,
help, and more are also available from the
original project’s website.
Also support http://www.radiocicletta.it/, our beloved webradio :3