The Patch Chord continously samples the cycle duration and duty cycle of the input waveform. It outputs 12 semitone steps above the input note, 12 semitone steps below the input note, and the root note itself. You can also change the Semitone mode to Integer Harmonics for additive synthesis or 12 frequency dividers and 12 frequency multipliers for clocks. V3 has 3 different waveforms to choose from Triangle, Sine and Pulse with continuously variable width.
