Kurzweil K2700 Musician's Manual page 125

Program Edit Mode
Editing VAST Programs With KVA Oscillators
it is cut off frequency for the low pass filter. For this example, leave this initial value set to
its default. With the LP Frq parameter selected, press right on the cursor button to get to
this function's sub page (the right half of the display). Select the Veltrk parameter and use
the alpha wheel or alpha numeric pad to turn it all the way up to 10800ct. Now keyboard
velocities will affect the LP Frq parameter. A velocity of 127 will cause the filter's cut off
frequency to move up 10800 cents from its initial value, a velocity of 0 will have no effect on
the cut off frequency, and values in between will increase the cut off frequency by a scaling
between 0 and 10800 cents. Overall, this will cause higher played velocities to increase the
cut off frequency, making the oscillator sound brighter, and lower velocities to lower the cut
off frequency, making the oscillator sound duller. This method can be used to control any
DSP function that is loaded into an algorithm. See
page 3-58
Alternatively, you could assign cut off frequency to be controlled by any continuous
controller, such as the Mod Wheel. Start again with the unedited Program 2046 Editor
Template. Follow the same steps as above, but instead of changing any parameters on the
DSP CTL page, press the DSP MOD soft button to reach the DSP Modulation page. On
the left side of the screen, choose the parameter for LP Frq, and then press the right cursor
button to reach the LP Frq sub page. On this sub page, you can assign any continuous
controller to control the cut off frequency of the LOPASS function (or the main parameter
for any function loaded in the current algorithm). Select the Source 1 parameter, hold the
ENTER button and move the Mod Wheel to quickly select MWheel (the Mod Wheel)
as your control source. Next, press the cursor down button to select the Depth parameter,
then use the alpha wheel or alpha numeric pad to turn it all the way up to 10800ct. Now
the Mod Wheel will affect the LP Frq parameter. Moving the Mod Wheel all the way up
(a value of 127) will cause the filter's cut off frequency to move up 10800 cents from its
initial value, moving the Mod Wheel all the way down (a value of 0) will have no effect on
the cut off frequency, and values in between will increase the cut off frequency by a scaling
between 0 and 10800 cents. Now you have the same control over cut off frequency as you
did in the previous example, but now it is controlled by the Mod Wheel. Overall, moving
the Mod Wheel up will increase the cut off frequency, making the oscillator sound brighter,
and moving the Mod Wheel down will lower the cut off frequency, making the oscillator
sound duller. This is useful to control a classic "filter sweep" sound. The above method can be
used to control any DSP function that is loaded into an algorithm, and you can choose any
continuous controller as a control source.
3-82
for other control parameters available on the DSP CTL page.
The DSP Control (DSP CTL) Page on