Classic Rob Hordijk Benjolin schematic with mods:
+clock rungler input (any signal, such as puls, trigs, gates, clock
+external audio input (through a filter)
+band pass filter output
+high pass filter output (capricious output, starts cutting low frequencies only when the resonance is raised from 30%)
https://www.youtube.com/watch?v=nbUGDi60idY
This Module is currently available.
$220