Kurzweil K2661 Musician's Manual page 544

DSP Functions
The DSP Functions
As the SHAPER receives input signals, it evaluates the signal's level according to its own
internal scale. When the SHAPER's Adjust value is at .25, an input signal moving from negative
full scale to positive full scale (a sawtooth) will map to an output curve with a single-cycle sine
wave shape. At an adjust value of .5, the same input signal would map to a 2-cycle sine wave
output signal. Adjust values of .75 and 1.0 for the SHAPER would map to 3-and 4-cycle sine
wave output signals, respectively. Beyond values of 1.0, some portions of the output will pin at
zero-scale.
Small Adjust values for the SHAPER can sound much like the DIST function, but larger values
will introduce dramatic changes in timbre, while DIST will have a less pronounced effect on
timbre.
The following F1 page shows the SHAPER function in the F1 block, but it can appear in other
blocks as well.
Parameter
Adjust
Keytrack Start
Key Tracking
Velocity Tracking
Pad
Source 1
Source 1 Depth
Source 2
Source 2 Depth Control
Minimum Depth, Source 2
Maximum Depth, Source 2
The values for each of the parameters on the SHAPER's control-input page are expressed in
arbitrary quantities that represent a multiplication of the amount of shaping applied.
Double Shaper (SHAPE2)
This is simply a series of two SHAPERs. The first is programmed exactly like SHAPER. The
values of the control parameters for the second are fixed at .75 times those of the first. This can
produce effects that the single SHAPER can't. If, for example, you set the Adjust parameter of
SHAPE2 to 1.000, it will process the input signal with a value of 1.000, then again with a value
of .75. This is not the same as processing the input signal once with an Adjust value of 1.75.
16-48
Range of Values
0.100 x to 4.000 x
C -1 to C 9 unipolar, C -1 to C 9 bipolar
± 0.200 x
± 4.00 x
0, 6, 12, 18 dB
Control Source list
± 4.00 x
Control Source list
Control Source list
± 4.00 x
± 4.00 x