Warp Fun Equations - Kurzweil K2600 - MUSICIANS GUIDE REV A PART NUMBER 910330 CHAP 17 Manual

Figure 17-8

Warp FUN Equations

The next Þve equations all behave similarly, and are intended to be used as follows: the value of
Input a is the controlling value, and normally remains constant, although it doesnÕt have to. The
value of Input b is expected to change over time; Input b might be an LFO, for example. The
value for Input a affects how the FUN calculates its output value while the value of Input b
changes.
warp1(a, b)
We call this the Vari-slopeª equation. The value of Input a controls the mapping of values for
Input b. If Input b is a sawtooth wave, different values for Input a will change it into a triangle
wave. If Input b is a more complicated waveform, the output waveform is also more
complicated.
output
values
+1
-1
-1
a = 0, b rising
from -1 to 1
Figure 17-9
output
values
+1
-1
-1
sin (a + b)
a = sine
b = 0
sin (a + b)
output
values
+1
input
1 -1
values
a = .5, b rising
from -1 to 1
warp1(a, b)
input
1
values
input
1
values
-1
The FUN Equations
output
values
+1
-1
-1
a = 1, b rising
from -1 to 1
FUNS
input
1
values
17-11