A DC-offset switch corrects the input signal to improve tracking on rectified or offset signals.Since the peaks/crests of the sine(ish) waves of the filtered key signal slow their rate of change at the point where they begin to change direction, crossing at this point instead of at the quick zero-crossing of the original waveform results in smoother transitions with less harmonics. The signal is then flipped in polarity when the peaks hit zero. Here, the key signal is DC-offset so that negative peaks sit at zero amplitude. A different version of a flipper circuit is used for this mode. Mode B is a more complex circuit, and a more accurate simulation of the original Boss OC-2 pedal. This abrupt change in direction causes additional harmonics, and results in a brassy tone (although can be filtered out). Mode A (old version) flips the polarity of the key signal directly at the positive zero-crossings. Polarity Multiplier has two modes: A and B.In phase-multiplier mode, the full dynamics of the key signal are retained. In additive mode, dynamics for the oscillators can be controlled either by a noise gate or an envelope follower, both keyed off the input signal.The additive mode simply mixes in the octave down signals (via user-adjustable levels and wet/dry balance), whereas the phase-multiplier mode flips the phase of the key signal, following the state of the selected oscillator. Option for two modes of operation: additive oscillators or phase-multiplier.Both on oscillator outputs (changes tone from full square wave to pure sine, or anywhere in between) as well as on the detection circuit (which can fine-tune the accuracy of the octave-divider's tracking).Controls to all the typically fixed values for low-pass filters.It's unique from the Boss and other pedals, and other octaver plug-ins, in that it offers: It's based on the popular Boss OC-2 pedal, but with many more features and customizability far beyond what other octavers offer. OC-D2 is an octaver plug-in that generates a signal one and/or two octaves below the original.
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