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Chapter 9 EXS24 mkII 182
EXS24 mkII LFO waveforms
You can use the Wave buttons to choose dierent waveforms for LFO 1 and LFO 2. The table
outlines how these waveforms can aect your sounds.
Tip: Try dierent waveforms while a modulation routing of Pitch is engaged and running.
Waveform Comments
Triangle Well-suited for vibrato eects
Sawtooth Well-suited for helicopter and space gun sounds.
Intense modulations of pitch with a negative (inverse)
sawtooth wave lead to “bubbling” sounds. Intense
sawtooth modulations of lowpass lter cuto and
resonance create rhythmic eects. The waveform can
also be inverted, resulting in a dierent start point for
the modulation cycle.
Rectangle Use of the rectangular waves periodically switches the
LFO between two values. The upper rectangular wave
switches between a positive value and 0. The lower
wave switches between a positive and a negative
value set to the same amount above or below 0. You
can achieve an interesting eect by modulating the
Pitch destination with a suitable modulation intensity
that leads to an interval of a fth. Choose the upper
rectangular wave to do so.
Sample & Hold The two lower waveform settings of the LFOs
output random values. A random value is selected
at regular intervals, as dened by the LFO rate. The
upper waveform steps between randomized values
(rapid switches between values). At its lower setting,
the 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 Pitch 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.