Prologue
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Prologue is modelled on subtractive synthesis, the method used in classic analog synthesizers. It has the following basic features:
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Multimode filter
Variable slope low-pass and high-pass, plus band-pass and notch filter modes.
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Three oscillators, each with 4 standard waveforms plus an assortment of specialized waveforms.
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Frequency modulation.
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Ring Modulation.
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Built-in effects.
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Prologue receives MIDI on all MIDI channels.
You do not have to select a MIDI channel to direct MIDI to Prologue.
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Figure: Functional Diagram