Kurzweil K2661, Musician’S Reference Manual

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KDFX Reference
KDFX Algorithm Specifications
10-217
957 Gate
958 Super Gate
Signal gate algorithms
PAUs: 1 for Gate
2 for Super Gate
Gate and Super Gate do stand alone gate processing and can be con fi gured as a stereo or mono effects. As
a stereo effect, the stereo signal gates itself based on its amplitude. As a mono effect, you can use one mono
input signal to gate a second mono input signal (or one channel can gate itself). Separate output gain and
panning for both channels is provided for improved mono processing
fl exibility.
Figure 10-114 Gate
A gate behaves like an on off switch for a signal. One or both input channels is used to control whether the
switch is on (gate is open) or off (gate is closed). The on/off control is called “side chain” processing. You
select which of the two input channels or both is used for side chain processing. When you select both
channels, the sum of the left and right input amplitudes is used. The gate is opened when the side chain
amplitude rises above a level that you specify with the Threshold parameter.
Super Gate will behave differently depending on whether the Retrigger parameter is set to off or on. For
the simpler Gate, there is no Retrigger parameter, and it is as if Retrigger is always on. If Retrigger is on,
the gate will stay open for as long as the side chain signal is above the threshold. When the signal drops
below the threshold, the gate will remain open for the time set with the Gate Time parameter. At the end of
the Gate Time, the gate closes. When the signal rises above threshold, it opens again. What is happening is
that the gate timer is being constantly retriggered while the signal is above threshold. You will typically
use the gate with Retrigger set to on for percussive sounds.
Delay
Delay
Pan
Pan
Channel
Select
Gate
Side Chain
Gate
Gate
L Input
R Input
L Output
R Output
L Out Gain
R Out Gain