10.6

385Logic Pro Instruments
Invert the effect of the via modulation source
• In the Logic Pro Sampler Mod Matrix pane, click the Via Inv button to invert the effect of
the via modulation source.
A negative value becomes positive, and vice versa.
Sampler LFOs
Sampler LFO overview
You can use any of the four identical LFOs (low frequency oscillators) shown in the
Modulators pane to control and add animation to your instruments. All LFOs are available
as sources and targets in the Mod Matrix pane. If you are new to synthesizers and the
concept behind LFOs, see Common modulation sources.
You can use all Sampler LFOs polyphonically or monophonically. When used polyphonically,
this means that modulation of multiple voices is not phase-locked. The LFOs can also be
key-synced—each time you play a key, LFO modulation of this voice is started from zero.
To understand the non-phase-locked characteristic more fully, imagine playing a chord
on your keyboard. If an LFO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, the modulation is independent for each voice, or note
you play.
When you use LFOs monophonically, modulation is identical for all voices. For example,
imagine a chord you are playing on the keyboard is using LFO2 to modulate pitch, which
you set up in the Mod Matrix. In this situation, the pitch of all voices in your played chord
rise and fall synchronously.
The key-sync feature ensures that the LFO waveform cycle always starts from zero, which
results in consistent modulation of each voice you play. If LFO waveform cycles are not
synchronized in this way, individual note modulations are uneven.
You can set all LFOs to either oscillate freely or to be synchronized with the Logic Pro
tempo, in values ranging between 32 bars and 1/128th triplets.
You can fade LFOs in or out automatically with the built-in ramp generator available in each
LFO.