Scheps Omni Channel / User Guide
Compressor Module
The Compressor module consists of three different compressor modes.
VCA is a modern-sounding compressor. It’s the most transparent of these three compressor types. Its
“feed-forward” processing can yield very fast attacks and there’s very little distortion. Because of
this
design, there is no compression in the sidechain.
FET sounds slower than a VCA compressor due to its “feed backward” processing. It actually operates
more quickly than VCA, but it takes a bit longer to activate. There’s more distortion and color than in the
VCA compressor type, and it tends to be more “peaky.” There is compression in the sidechain.
The FET compressor can be used to create a deep, pumpy compression sound. Set Ratio between 20:1
and infinity:1. Start with a very slow attack and a fast release. Experiment with these time values, since
they can have an impressive effect on the sound.
OPT is based on photocell compressors. It’s the slowest and smoothest of these three compressors. It has
a long “memory” so it tends to be soft and quite rich. Because of its slower attack, transients are more
easily maintained. There is compression in the sidechain.
Range: three-positon radio switch
Threshold
Sets the compressor’s engagement level.
Range: -50 dB to 0 dB
Gain reduction meter
Shows the amount of gain reduction introduced by the compressor.
Range: -15 dB to -1 dB
Ratio
Determines how hard the signal is compressed.
Range: 1:1 to infinity:1
Attack
Determines how quickly the compressor reacts to a signal.
Range: 0.4 ms to 150 ms
Release
Determines how fast the compressor reduces processing after the signal falls
below the threshold.
Range: 50 ms to 5000 ms
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