Hello Iohannes, all,
I've developed a pix_noise object that generates a noise texture. You can find it on github: git@github.com:nixhol/Gem.git the name of the branch is: pix_noise
The object is mainly based on pix_set with a Lagged Fibonnaci random generator. I first tested with the algorithm of noise~ but, as Iohannes pointed, it was correlated on big texture. It seems ok now.
Hope that'll help! Best n