KDFX Reference
KDFX Algorithm Specifications
10-13
If Gate Duck is turned on, then the behaviour of the gate is reversed. The gate is open while the side chain
signal is below threshold, and it closes when the signal rises above thresold.
If the gate opened and closed instantaneously, you would hear a large digital click, like a big knife switch
was being thrown. Obviously thatÕs not a good idea, so Gate Atk (attack) and Gate Rel (release) parameters
are use to set the times for the gate to open and close. More precisely, depending on whether Gate Duck is
off or on, Gate Atk sets how fast the gate opens or closes when the side chain signal rises above the
threshold. The Gate Rel sets how fast the gate closes or opens after the gate timer has elapsed.
The Signal Dly parameter delays the signal being gated, but does not delay the side chain signal. By
delaying the main signal relative to the side chain signal, you can open the gate just before the main signal
rises above threshold. ItÕs a little like being able to pick up the telephone before it rings!
Parameters
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Wet/Dry A simple mix of the reverb sound with the dry sound. When set fully dry (0%), the gate is
still active.
Out Gain An overall level control of the effectÕs output (applied after the Wet/Dry mix).
Rvrb Time The reverb time displayed is accurate for normal settings of the other parameters (HF
Damping = 25088kHz, and Diff Scale, Room Scale and Density = 1.00x). Changing Rvrb
Time to Inf creates an inÞnitely sustaining reverb.
HF Damping Reduces high frequency components of the reverb above the displayed cutoff frequency.
Removing higher reverb frequencies can often make rooms sound more natural.
L/R Pre Dly The delay between the start of a sound and the output of the Þrst reverb reßections from
that sound. Longer pre-delays can help make larger spaces sound more realistic. Longer
times can also help improve the clarity of a mix by separating the reverb signal from the
dry signal, so the dry signal is not obscured. Likewise, the wet signal will be more audible
Wet/Dry 0 to 100%wet Out Gain Off, -79.0 to 24.0 dB
Rvrb Time 0.5 to 30.0s, Inf HF Damping 16 to 25088 Hz
L Pre Dly 0 to 620ms R Pre Dly 0 to 620 ms
Room Type Hall1 Diff Scale 0.00 to 2.00x
Size Scale 0.00 to 4.00x
Density 0.00 to 4.00x
Gate Thres -79.0 to 0.0 dB Gate Time 0 to 3000 ms
Gate Duck In or Out Gate Atk 0.0 to 228.0 ms
Gate Rel 0 to 3000 ms
GateSigDly 0.0 to 25.0 ms
Reduction -dB 60 40 * 16 * 8 4 0
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