10.6

241Logic Pro Instruments
Logic Pro ES2 LFO waveforms
Choose a waveform for LFO1 or LFO 2 with the LFOWave buttons. The table outlines how
these waveforms can affect your sounds.
Tip: Try using the waveforms while a modulation routing of Pitch123 (the pitch of all
three oscillators) is engaged and running
Waveform Comments
Triangle Suitable for vibrato effects.
Sawtooth Suitable for helicopter and space gun sounds. Intense modulations of
oscillator frequencies with a negative (inverse) sawtooth wave lead to
“bubbling” sounds. Intense sawtooth modulations of lowpass filter cutoff
and resonance creates rhythmic effects. The inverted sawtooth waveform
provides a different start point for the modulation cycle.
Rectangle Rectangular waves periodically switch the LFO between two values. The
upper rectangular wave switches between a positive value and zero. The
lower wave switches between a positive and a negative value set to the
same amount above/below zero. An interesting effect can be achieved by
modulating Pitch123 with a suitable modulation intensity that leads to an
interval of a fifth. Choose the upper rectangular wave to do so.
Sample & Hold The bottom two LFO waveforms output random values. A random value is
selected at regular intervals, defined by the LFO rate. The upper random
wave steps between randomized values—rapid switches between values.
The lower random wave is smoothed out, resulting in fluid changes to
values. The term Sample & Hold (S&H) refers to the procedure of taking
samples from a noise signal at regular intervals. The values of these
samples are then held until the next sample is taken.
Tip:A random modulation of Pitch123 leads to an effect commonly
referred to as a random pitch pattern generator or sample and hold.
Try using very high notes, at very high rates and high intensities—you’ll
recognize this well-known effect from hundreds of science fiction movies.
Use Logic Pro ES2 LFOs
ES2 LFOs can be used to create delayed modulations, free modulations, and modulations
that are synchronized with the Logic Pro tempo.
Set the LFO1 modulation fade time in ES2
• In Logic Pro, set a positive LFO1 EG value to fade in the modulation.
The higher the value, the longer the delay time.
• Set a negative LFO1 EG value to fade out the modulation.
The lower the slider is positioned onscreen, the shorter the fade out time.
Set up a delayed vibrato in ES2
LFO envelopes are most often used for delayed vibrato—many instrumentalists and singers
intonate longer notes this way.
1. In Logic Pro, place the LFO1 EG slider at a position in the upper half (Delay) and
modulate the Pitch123 target with the LFO1 source in the router.
2. Set a slight modulation intensity.