Kurzweil K2700 Musician's Manual page 184

The Effects Chain Editor
Effects Parameters
Gates
SC Input lets you select which input channel(s) will control the sidechain, which is
responsible for opening and closing the gate. It can be set to L, R, or the average of the
two channels, (L+R)/2. You can use this, if you arrange the signal paths and pan controls
appropriately, to gate one mono signal with a different mono signal.
Gate Time is the time that the gate will stay open after the sidechain signal reaches the
Threshold. Its range is 0 to 3000ms.
Ducking reverses the action of the gate. Normally this if set to "Off", and the gate opens
when the input signal rises above the threshold. But when this is "On", the gate closes when
the input signal rises above the threshold.
Super Gate
Super Gate is a more sophisticated gate that includes these two functions:
Env Time is the amount of time it takes for the sidechain signal envelope to drop below the
threshold. If this time is too short, the gate can close and open too quickly from amplitude
modulation in the sidechain signal. If it is too long, the gate may stay closed until the
envelope has a chance to fall, and some signals would not get through. This parameter is only
in effect when Retrigger is Off.
Retrigger determines whether the gate timer will reset itself each time the sidechain signal
goes above the threshold. If it is "On", the timer resets itself, and therefore the gate stays
open as long as the signal is above the threshold, or keeps going above the threshold, within
the interval specified by Gate Time. If it is "Off", the gate closes down after Env Time
has elapsed, regardless off the sidechain level, and the sidechain level must fall below the
threshold and come back up again before the gate will open again.
Chorus
Chorus is an effect which gives the illusion of multiple voices playing in unison. The effect
is achieved by detuning copies of the original signal and summing the detuned copies back
with the original. Low frequency oscillators (LFOs) are used to modulate the positions of
output taps from a delay line. The movement of the taps causes the pitch of the signal to shift
up and down, producing the required detuning.
The choruses are available as stereo or dual mono. The stereo choruses have the parameters
for the left and right channels ganged, while the dual mono choruses have separate left and
right controls.
Fdbk Level is the level of the feedback signal from the LFO1 delay tap into the delay line.
Negative values polarity-invert the feedback signal.
Tap Lvl sets the levels of the LFO-modulated delay taps. Negative values polarity-invert the
signal. Setting any tap level to 0% turns it off.
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