Apple MainStage 3 Instruments - MainStage 3 Instruments

Sculpture also includes a number of specially designed modulation sources that are less
conventional. These include:
••
Two jitter generators with adjustable bandwidth—used to create random variations.
••
Two Randomizers that change values only at note start/on—perfect for emulating the lip,
breath, and tongue effects of brass instrument players, for example.
••
Two recordable envelopes that can be used as MIDI controlled modulators—with the
ability to polyphonically play back on a per-voice basis, and modify incoming MIDI
controller movements.
Sculpture does not provide a centralized modulation router. All modulation routings—choosing
a modulation target and/or via source—are made within each modulation source pane.
Open a modulation source pane
mm
Click the button of the modulation source you want to use. When a modulation source is active,
the corresponding button label is highlighted.
Sculpture LFOs
Sculpture LFO overview
Sculpture offers two multiwaveform LFOs. Both can be used either polyphonically,
monophonically, or somewhere in-between.
If used monophonically, the modulation is identical for all voices. Imagine a scenario where
a chord is played on the keyboard. If LFO 2 is used to modulate pitch, for example, the
pitch of all voices in the played chord will rise and fall synchronously. This is known as a
phase-locked modulation.
In the same scenario, if LFO 2 is used polyphonically—to modulate multiple voices—they will not
be phase-locked.
If a random (in-between) value is used, some notes will be modulated synchronously, and others
won’t.
Furthermore, both LFOs are key-synced: Each time you play a key, the LFO modulation of this
voice is started from 0.
To understand the non-phase-locked characteristic more easily, imagine a situation where a
chord is played on the keyboard. If LFO 2 is used to modulate pitch, for example, the pitch of one
voice might rise, the pitch of another voice might fall, and the pitch of a third voice might reach
its minimum value. As you can see from this example, the modulation is independent for each
voice, or note.
The key sync feature ensures that the LFO waveform cycle always starts from 0, which results in
consistent modulation of each voice. If the LFO waveform cycles were not synchronized in this
way, individual note modulations would be uneven.
Chapter 13 Sculpture 264