Kurzweil K2661, Musician’S Reference Manual

Page: 294 / 500

10-212
KDFX Reference
KDFX Algorithm Specifications
Page 4
In/Out When set to “In” the compressor/expander is active; when set to “Out” the compressor/
expander 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 “Out”.
FdbkComprs A switch to set whether the compressor side chain is con fi gured for feed-forward (Out) or
feedback (In). The expander is unaffected.
Comp Atk The time for the compressor to start to cut in when there is an increase in signal level
(attack) above the threshold.
Comp Rel The time for the compressor to stop compressing when there is a reduction in signal level
(release) from a signal level above the threshold.
Exp Atk The time for the expander to increase the gain of the signal (turns off the expander) after
the signal rises above threshold.
Exp Rel The time for the expander to reduce the signal level when the signal drops below the
threshold (turning on expansion).
SmoothTime A lowpass fi lter in the control signal path. It is intended to smooth the output of the
expander’s 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.
Comp1Ratio The compression ratio in effect above compression threshold #1 (Comp1Thres). High
ratios are highly compressed; low ratios are moderately compressed.
Comp1Thres One of two compression threshold levels. Threshold is expressed in dBFS (decibels
relative to full scale) above which the signal begins to be compressed.
Comp2Ratio The compression ratio in effect above compression threshold #2 (Comp2Thres). High
ratios are highly compressed; low ratios are moderately compressed.
Comp2Thres One of two compression threshold levels. Threshold is expressed in dBFS (decibels
relative to full scale) above which the signal begins to be compressed.
Exp Ratio The expansion ratio. High values (1:17 max) are highly expanded, low values (1:1 min) are
moderately expanded.
Exp Thres The expansion threshold level in dBFS (decibels relative to full scale) below which the
signal begins to be expanded.
Bass Gain -79.0 to 24.0 dB Treb Gain -79.0 to 24.0 dB
Bass Freq 16 to 25088 Hz Treb Freq 16 to 25088 Hz
Mid Gain -79.0 to 24.0 dB
Mid Freq 16 to 25088 Hz
Mid Wid 0.010 to 5.000 oct