I’m having sort of a hard time figuring out what the MIDI Murf actually does. Is it a step sequencer? A filter?
It is a sequenced bank of fixed fequency ressonant parametric (lowpass on the lowest band) filters.
At a given step an amp envelope fires feeding the audio in through any, 0 to 8, of the 8 filters. The sliders on the front control the volume of each filter that has been selected by the pattern to filter audio at that step. There is a knob to control the envelope shape; so, you can get plucked, bowed, evolving pad sounds, ect.
The original murfs each had 11 uneditable patterns and one setting for static, nonanimated filtering. The midi murf has the filter banks of both the regular and bass murfs and allows you to program the sequencer patterns. The patterns can be sent by a computer than selected live by a knob or sending a midi cc. You can also sequence it using an external sequencer.