User Guide

FXAlg #953: Compress w/SC EQ
Algorithm Reference-145
Parameters:
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In/Out When set to ÒInÓ the compressor is active; when set to ÒOutÓ the compressor is
bypassed.
Out Gain Compressing the signal causes a reduction in signal level. To compensate, the output
gain parameter may be used to increase the gain by as much as 24 dB. Note that the Out
Gain parameter does not control the signal level when the algorithm is set to ÒOutÓ.
FdbkComprs A switch to set whether the compressor side chain is conÞgured for feed-forward (Out)
or feedback (In).
Atk Time The time for the compressor to start to cut in when there is an increase in signal level
(attack) above the threshold.
Rel Time The time for the compressor to stop compressing when there is a reduction in signal
level (release) from a signal level above the threshold.
SmoothTime A lowpass Þlter in the control signal path. It is intended to smooth the output of the
expanderÕs envelope detector. Smoothing will affect the attack or release times when the
smoothing time is longer than one of the other times.
Signal Dly The time in ms by which the input signal should be delayed with respect to compressor
side chain processing (i.e. side chain pre-delay). This allows the compression to appear
to take effect just before the signal actually rises.
Ratio The compression ratio. High ratios are highly compressed; low ratios are moderately
compressed.
Threshold The threshold level in dBFS (decibels relative to full scale) above which the signal begins
to be compressed.
MakeUpGain Provides an additional control of the output gain. The Out Gain and MakeUpGain
controls are additive (in decibels) and together may provide a maximum of 24 dB boost
to offset gain reduction due to compression.
In/Out In or Out Out Gain Off, -79.0 to 24.0 dB
FdbkComprs In or Out
Atk Time 0.0 to 228.0 ms Ratio 1.0:1 to 100.0:1, Inf:1
Rel Time 0 to 3000 ms Threshold -79.0 to 24.0 dB
SmoothTime 0.0 to 228.0 ms MakeUpGain Off, -79.0 to 24.0 dB
Signal Dly 0.0 to 25.0 ms
Reduction
-dB 40 20 12 8 6 4 2 0
SCBassGain -79.0 to 24.0 dB SCTrebGain -79.0 to 24.0 dB
SCBassFreq 16 to 25088 Hz SCTrebFreq 16 to 25088 Hz
SCMidGain -79.0 to 24.0 dB
SCMidFreq 16 to 25088 Hz
SCMidWidth 0.010 to 5.000 oct