3 blocks dealing with 4-voice MIDI I/O setup
Six Notes In:
MIDI input distributing polyphony to four voices. Each voice has its pitch and gate output. Upper knob controls random gate skipping, lower knob controls random octave jumps. Lamps monitor voice activity. MIDI input channel selector in B view.
Six Notes Out:
MIDI output selector on top, 4-notes monitoring lamps and note values, manual "Panic!" button on bottom.
Six Notes Filter:
Filters incoming notes - those outside specified range (upper and bottom edge) won't pass. Upper knob controls band size, lower center position (both modulable). Switch for inverting selection on bottom.