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Table Of Contents
A Brief LFO Overview
A low frequency oscillator (LFO) is an oscillator, much like the main oscillators you would
find in a traditional synthesizer:
An LFO generates signals below the audio frequency range—in the bandwidth that
falls between 0.1 and 20 Hz, but sometimes as high as 50 Hz.
Because it can’t be heard, an LFO only serves as a modulation source for periodic,
cyclic modulation effects—rather than as part of the actual audio signal.
See Using the LFO to Modulate Sounds.
Choosing Sculpture LFO Modulation Targets and Via Sources
Two modulation targets can be assigned per LFO. An optional, via modulation can also
be assigned.
Click the 1 or 2 buttons
to activate each source.
The “via menus determine the source that controls the modulation scaling for each LFO.
In cases where the via source is set to off, only one amount slider is visible (the via amount
slider is hidden):
Amt sliders (1 and 2): Determine the modulation amount.
In cases where any via source other than off is selected, there are two sliders:
Amt sliders (1 and 2): Determine the modulation amount in cases where the incoming
via signal is 0. When the modulation wheel at its minimum position, for example.
Via (Amount) sliders (1 and 2): Determine the via modulation amount in cases where
the incoming via signal is at its maximum. Modulation wheel at the maximum position,
for example.
Using Sculptures LFO Waveforms
The LFO Waveform buttons allow you to choose different waveforms for the LFOs. The
table below outlines how these can affect your modulations.
CommentsWaveform
Ideal for constant, even, modulations.Sine
355Chapter 14 Sculpture