EXS24 mkII includes three LFOs (low frequency oscillators). They are all available as sources and targets in the router. If you are new to synthesizers and the concept behind LFOs, see Common modulation sources.
LFO 1 is polyphonic, which means that if it is used for any modulation of multiple voices, they are not phase-locked. LFO 1 is also key-synced—each time you play a key, LFO 1 modulation of this voice is started from 0.
To understand the non-phase-locked characteristic more fully, imagine a scenario where a chord is played on the keyboard. If LFO 1 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.
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.
LFO 1 can also be faded in or out automatically, courtesy of a built-in envelope generator.
LFO 2 is monophonic, which means that the modulation is identical for all voices. For example, imagine that a chord is played on the keyboard. If LFO 2 is used to modulate pitch, the pitch of all voices in the played chord rises and falls synchronously.
LFO 3 is also monophonic, always using a triangular waveform.
All three LFOs can either oscillate freely or be synchronized to the Logic Pro X tempo in values ranging between 32 bars and 1/128 triplets.
LFO 1 EG knob and field: Set the time it takes for LFO 1 modulation to fade in or fade out. See EXS24 mkII LFO 1 envelope generator.
LFO 1 Rate knob and field: Set the frequency, or speed, of LFO 1 modulation. The value is displayed in Hertz (Hz) or note values beneath the slider. See Set EXS24 mkII LFO rate.
Wave buttons: Choose the waveform for LFO 1 (left column) and LFO 2 (right column). For details about how to use them, see EXS24 mkII LFO waveforms.
LFO 2 Rate knob and field: Set the frequency, or speed, of LFO 2 modulation.
LFO 3 Rate knob and field: Set the frequency, or speed, of LFO 3 modulation.