10.6

Table Of Contents
482Logic Pro 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 in Sculpture
In Logic Pro: 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
Logic Pro 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 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
are not phase-locked.
If a random (in-between) value is used, some notes are modulated synchronously, and
others are not modulated synchronously.
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.