This is my first patch venturing into bi-quad band pass filters territory.

Noise source from oscillator 5 is fed via formula V into the standard low pass filter. Which frequency is managed by formula U. U defines a fixed value + small values based on Z (pressure).

The output of the filter (oscillator 5) is fed into the first BigBank with a fixed value of 0.70.

What happens then I still need to figure out, but I use formula’s A,B,C,D and E to manage the values of the columns above.

The result, after some tweaking, is very cool and I used this patch in a track I posted on Soundcloud. You can hear the patch about 30 seconds from the beginning (track starts with the Hydrasynth and Pro 3).