Adding slow randomness to counter repetetiveness?

Questions
1

I’m trying to add some randomness to rotational fx, so that rotations don’t repeat so much.

I’ve got a Slit Scan that rotates, following a slow LFO. How would I make it not follow the same path over and over?

I’ve been experimenting with adding random LFOs, but they’re always too fast. Can’t figure it out, tried a bunch of things like adding a slow clock, smooth num fx and so on. Kinda stumped, anyone know a way?

Thanks!

2

One simple trick to fake randomness that comes to mind:

Have a second LFO modulate the speed of the first LFO. It usually has to be subtle. Set the low and high points so it shifts slightly between 10% of the “original speed” or so. That way it looks like it is sometimes slightly faster, sometimes slightly slower. By adjusting the exact settings you can make it “seem” un-repetitive.

You can either just use a sine wave as the modulator, or for slightly less obvious patterns, use waveform and build it with maybe 5-6 various highs, lows and distances between them. That way the speed-change will seem random.

(This trick of course won’t work if your animations are synced to music etc)

(I’m hopeful someone else has a better solution because this is a hack)

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3

Thanks, made me take a step back to what I’m actually after. Random modulation probably won’t work at all, and made my question convoluted.

More simply put, what I’m after is a way to rotate fx. If there relative coordinates inside the fx, that would do the trick. So one LFO would rotate the slit scan’s angle, and another one would slowly rotate the entire slit scan fx (but not the layer).

Doh! Random is entirely wrong, I want a circle. A slit scan that does its thing and then another rotation applied to it, from outside. I’m still thinking there could be some way of achieving it by modulation, but maybe Math is the way rather than combining LFOs?