You can download the patch here.
Easiest way to use it yourself is to install pd-extended and add rjlib.
Today I started messing about with comb filter and feedback. At one point it got into this “digital ocean wave” type of sound. about 0:50. But it was really a very wide spectrum of sounds I was getting from this simple setup. Basically its feeding a comb filter with a kick sound of sorts, then setting a bit of filtered feedback. Once i started to randomize the frequency of the comb filter it got interesting,