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Chapter 3 ES2 65
ES2 LFO waveforms
Choose a waveform for LFO 1 or LFO 2 with the LFO Wave buttons. The table outlines how these
waveforms can aect 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 eects
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 lter cuto
and resonance creates rhythmic eects. The inverted
sawtooth waveform provides a dierent 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 eect can be achieved by modulating
Pitch123 with a suitable modulation intensity that
leads to an interval of a fth. 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,
dened 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 uid 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
eect 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 eect from hundreds
of science ction movies.