Hello I am synthesizing by some means an optical noise effect where I used an LED biased at threshold and a minute random noise current is added enough to flicker the LED to emit what I would like to think as electrically induced optical noise. My studies applies to stochastic resonance in optical imaging and transmission. The key idea is that is a "noise aided" image and signal processing. Now I would like to be able to use PSPICE to do the macromodeling or behavioral modeling of theory. Any one on this forum on NOISE Modeling or SR?