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KDFX Reference
KDFX Algorithm Specifications
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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.
SCBassGain The amount of boost or cut that the side chain bass shelving Þlter should apply to the low
frequency signals in dB. Every increase of 6 dB approximately doubles the amplitude of
the signal. Positive values boost the bass signal below the speciÞed frequency. Negative
values cut the bass signal below the speciÞed frequency.
SCBassFreq The center frequency of the side chain bass shelving Þlter in intervals of one semitone.
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
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
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