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Low Frequency Oscillator
Sequential
Low Frequency Oscillator
The LFO is a special-purpose oscillator that produces a frequency below
the range of human hearing. The LFO is typically used for periodic
modulation such as vibrato (periodic pitch modulation) and tremolo
(periodic amplitude modulation).
The LFO on the Trigon-6 produces a variety of waveshapes, including
triangle, sawtooth, reverse sawtooth, square, and random. Though most
often used for low-frequency modulation, the Trigon-6 LFO can actually
function at speeds that extend into the audible range for extreme effects. The
LFO can be free-running or synced to the arpeggiator, sequencer, or MIDI
clock for tempo-synced effects such as lter sweeps, tremolo, and so on.
The Low-Frequency Oscillator
Triangle and Random waves are bipolar. Their waveshape is positive for half
of their cycle and negative for the other half. In the case of the triangle wave,
this makes it possible to generate a natural-sounding vibrato that goes alter-
nately sharp and at in equal amounts on either side of a center frequency.
Random, also known as “sample and hold,” generates a series of random
values, each held for the duration of one cycle
The square wave, sawtooth, and reverse sawtooth generate only positive
values. In the case of the square wave this makes it possible to generate natural-
sounding trills.
LFO waveshapes
Square RandomSawtooth Reverse
Sawtooth
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