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When set with the above controls, the Compressor’s number of bands and eventually the X-Over
frequencies, each compressor operating on each single band is an RMS Compressor working as shown by
the following picture:
The RMS Compressor is a Compression process, applied with fast slow Attack and Release times to the
INPUT signal of a Unit, in order to maintain the amplitude of the OUTPUT signal at a defined level, when
input level is exceeding a defined intervention Threshold.
The Compressors implemented in the DS-CP25 are 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,
making a more “Musical” sounding compression.
The RMS Compressor, maintains constant output energy and not output peak, so for different inputs levels,
independent of their harmonic content, maintains constant output RMS level.
The DS-CP25 Compressor also has available, Ratio and a Hard/Soft Knee parameters.
The Ratio parameter controls the compressed output maintaining a constant dB ratio with the input.
This feature in the DS-CP25 uses a precise Look Up Table Log Computation process, allowing a precision
of 0.1dBu.
The Hard and Soft knee feature is allowing the user to select between a sudden compression when the
input signal is just above the Threshold (Hard Knee) or a smoother one {Soft Knee} starting the
compression smoothly before the Threshold.
