Schwebung
Author: ASti

f(x)=sin (10ax)
g(x)=sin (10bx)
--------------------
h(x)=f(x)+g(x)  .... in roter Farbe

a = 0.7 (slider from 0.5 to 0.9, step 0.025)
b = 0.6 (slider from 0.5 to 0.9, step 0.025)
f(x) = sin(a * 10.0 * x)
g(x) = sin(b * 10.0 * x)
h(x) = f(x) + g(x)