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Chapter 12 Retro Synth 234
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Double switch: Turns unison mode on or o. The behavior of unison mode depends on the
number of voices set with the Voices parameter. One of the strengths of polyphonic analog
synthesizers is unison—or stacked voices—mode. Traditionally, in unison mode classic analog
polysynths run monophonically, with all voices playing simultaneously when a single note is
struck. Because the voices of an analog synthesizer are never perfectly in tune, this results in a
rich, chorus-like eect with great sonic depth.
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Polyphonic unison mode: When 2–16 voices are selected, voices are stacked, but you can
play polyphonically.
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Monophonic unison mode: When Mono or Legato is selected with the Voices parameter, all
voices are stacked, but you can only play monophonically or in a legato style.
Controller parameters
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Mod Wheel to pop-up menu and slider: Choose a target for modulation with your keyboard’s
modulation wheel. Drag the slider to set the maximum modulation amount.
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Velocity to pop-up menu and slider: Choose a target for modulation with keyboard velocity.
Drag the slider to set the maximum modulation amount.
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Aftertouch to pop-up menu and slider: Choose a target for modulation with keyboard
aftertouch. Drag the slider to set the maximum modulation amount.
Retro Synth extended parameters
Retro Synth provides additional parameters that can be accessed by clicking the disclosure
triangle at the lower left of the interface.
Extended parameters
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MIDI Mono Mode pop-up menu: Choose O, On (with common base channel 1), or On (with
common base channel 16).
In either mode, each voice receives on a dierent MIDI channel. Controllers and MIDI messages
sent on the base channel aect all voices.
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Mono Mode Pitch Range pop-up menu: Choose 0, 24, or 48.
The chosen pitch bend range aects individual note pitch bend messages received on
all but the common base channel. The default is 48 semitones, which is compatible with
Mobile GarageBand's keyboard in pitch mode. When using a MIDI guitar, 24 semitones is the
preferable setting because most guitar to MIDI converters use this range by default.