Peak Limiter - Marani CLP-260 User Manual

The Hard and Soft knee feature is allowing the user to select between a
sudden compression intervention when the input signal it is just above
the Threshold (Hard Knee) or a smoother one starting the compression
smoothly before the Threshold.,
Together with the RMS Compressor, the CLP260 is making available also
other 2 very useful Dynamic Processes: an AGC and a Peak limiter.
In order to understand how the CLP260 AGC is working, need to refer to
the following picture
The AGC is an Expansion/Compression process applied with pretty slow
Attack and Release times to the INPUT signal of a Unit, in order to
maintain the average amplitude of the OUTPUT signal at a defined level,
independently from the averaged amplitude of the input sources.
For this purpose, the AGC has to be able to expand the input signal, there
where the average of the related output signal is below a defined
Threshold (Exp Thr), and to maintain the expanded signal at a constant
expansion level when the averaged signal is beyond a defined Threshold
(Thr Hold).
The AGC implemented in the CLP260 is acting on the evaluation of an
input signal which is an averaged one on a 50ms time frame, and
representing actually the RMS value of the input signal itself, so to make
more "Musical" the AGC action.
If the output signal of the AGC process will exceed then a defined
Threshold (Cmp Thr), so becoming too loud, a compression process is
occurring.
5