Tokøta, in this Mastering.com Logic Pro lesson, breaks down the Modulator's LFO section and uses it to build a rhythmic volume-ducking effect on a synth.
Shape, symmetry, and waveform selection control how the LFO cycles, while trigger modes decide its timing. Free mode runs continuously and locks tightly to your project's BPM, multi restarts with every note, and single restarts only between notes.
Steps per LFO cycle controls smoothness. Fewer steps create a stepped, gated feel, while triangle and sine waves allow smoothing instead of visible ridges.
Routing the LFO to an instrument's volume parameter creates the ducking sound heard across many genres. Output level tames clipping on the initial hit by limiting how far the LFO swings, and offset shifts which part of that range gets used, so raising or lowering the offset means compensating with output level to avoid losing or boosting volume unintentionally.