yes, thank you Stefan, in the mean time I got closer to the solution. I used two filters to separate the high pitched clicks from the low rumbles. Then.. I was looking for an object like bonk, to capture the percussive motions in the signal.... wow and guess what? bonk~ is very good to see this changes in the signal as well.
so I think I could sort it out:)
of course it is a steady rhythm, but I just need the bangs from it to trigger some algorithms... (and I use the cycle, saw, and the tri so whenever I alter just one's frequency the rhythm changes just a bit or essentially.
all the best,
ps.: yes the Max examples in Max 5 are very advanced!