CSA is a collection of LADSPA plugins mainly dedicated to FM broadcast. Designed by the "Commission Technique Canal B", a group of geeks from a free radio in Rennes France. This project is part of a wider one named COÏT. It's a low cost audio, and high quality link between radio studios and transmitter sites.
Extended Fast LookaheadLimiter
"Extended FastLookahead Limiter" is the first plugin written by the Commission Technique. It's a Lookahead limiter with a 8 band EQ in side chain and a loop back leveler. It may be useful before a FM transmitter. As FM Broadcast signal is emphasized, this limiter should work on high frequencies.
This plugin adapts the output mix of studios to the transmission médium. It scans signal with up to 64 cells (time intervals) and adjust it to a reference level. Just behind this plugin, a limiter will end the work.
Blind Peak Meter
With this plugin, blind people can monitor level. Bip sounds give the level of the signal. 4 different bips, for 4 levels. Input is signal, ouput is tone mixed or not with input level. Now blind Poeple can make high quality audio mix in radio studios, self recording, ...
24/16 Binary Overflow Rectifier
A magic way to restore bad recordings. Those recordings have heavy digital saturation noise. This plugin have been developed just because one day live video records sound like this :
With such a noise, audio engeeners told us : "record is for ever lost". Few code lines and hours after, this plugin gave this amazing result :
Sources and documentation downloads :
CSA web site project on Sourceforge.net :
Commission Technique Canal B web. CSA is part of the COÏT project (Canal B Over IP Transit).
Canal B, a Brittany Local Independent Rock 'n Roll radio experiments
a low cost link between its Rennes studios
and the FM transmitter in a water tower.
Our secret : low cost Computers,
free GPL Software under Linux, two DSL Lines,
long time listening all sort of audio codecs,
and a lot of work...
Linux Audio Developer's Simple Plugin API (LADSPA) :
Eclipse, the C/C++ dev environment for the project :
This is a Commission Technique Canal B GNU/GPL project.
Canal B - Commission Technique
13 Juin 2012