[sdiy] perlin-noise source anyone?

[Nils Pipenbrinck]

Hi List.

Because there was also a short discussion on slow changing random voltages I
just want to throw in another noise variant:

In the computer graphic world the so called "Perlin Noise" is the
sledgehammer method to model natural phenomens like wind, clouds and stuff
like that.It's simple to calculate and highly customizable. I guess the
algorithm for a 1D noise (e.g. one value changing over time) can even be
programmed into a tiny controller. I guess you can also build it from a hand
full of linear feedback shift registers (read: digital noise sources) and
slew-rate limiters.

I've never heared that someone used this approach for music, and I wonder
why. It's the perfect slow changing random CV.

Bye,
	Nils


PS: if someone wants to find out more here are the essencial links:

master perlin himself talks about it:
http://www.kenperlin.com/talk1/

just the math and some examples:
http://freespace.virgin.net/hugo.elias/models/m_perlin.htm