FUNS
The FUN Equations
17-15
ramp(f=a + b)
The values of Inputs a and b are added, then multiplied by 25.
ramp(f=a - b)
The value of Input b is subtracted from the value of Input a, and the difference is multiplied by
25.
ramp(f=(a + b) / 4)
The values of Inputs a and b are added, and the sum is divided by 4. This value is multiplied by
25.
ramp(f=a
*
b)
The values of Inputs a and b are multiplied, and the result is multiplied by 25.
ramp(f=-a
*
b)
The value of Input a is multiplied by -1, then multiplied by the value of Input b. The result is
multiplied by 25.
ramp(f=a
*
10^b)
10 is raised to the power of b, then multiplied by the value of Input a. The result is multiplied by
25.
Random / Chaotic LFO FUNs
The next Þve equations function somewhat like the equation a(b-y) described earlier, in that they
start with a value of 0 for y, evaluate the equation, and use the result as the new value of y for
the next evaluation. Although they all can function as LFOs (they can have a repeating cycle of
output values), they can become chaotic depending on the input values.
a(y + b)
The values of y and b are added, then multiplied by the value of a.
ay + b
The values of a and y are multiplied, then added to the value of b.
(a + 1)y + b
1 is added to the value of a. The sum is multiplied by the value of y. The result is added to the
value of b.
y +a(y + b)
The values of y and b are added. The sum is multiplied by the value of a. The result is added to
the value of y.
a |y| + b
The absolute value of y is taken (if itÕs a negative value, itÕs multiplied by -1). The absolute value
of y is multiplied by the value of a. the result is added to the value of b.
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