User Guide

Chapter 28 Sculpture 487
 The sawtooth is well suited for helicopter and space gun sounds. Intense
modulations of incoming frequencies leads to bubbling and boiling, underwater
sounds. Intense sawtooth modulations of lowpass filters create rhythmic effects.
 The rectangular waves make the LFO periodically switch between two values (as an
example—a positive value and zero—Unipolar). The Bipolar Rectangular wave
switches between a positive and a negative value set to the same amount above or
below zero.
 The two Sample&Hold waveform settings output random values. A random value is
selected at regular intervals, defined by the LFO rate. A modulation of pitch leads to
the effect commonly referred to as a random pitch pattern generator or sample and
hold. Check out very high notes, at very high rates and high intensities—you’ll
recognize this well-known effect from hundreds of science fiction movies! If the
Sample&Hold with Lag setting is used, the random wave is delayed, resulting in a
fluid changing of values.
Note: The term Sample & Hold (abbreviation—S & H) refers to the procedure of taking
samples from a noise signal at regular intervals. The voltage values of these samples are
then held until the next sample is taken. When converting analog audio signals into
digital signals, a similar procedure takes place: Samples of the voltage of the analog
audio signal are taken at the rate of the sampling frequency.
Rate
The Rate knob determines the rate of LFO modulation, which can be either synced to
the current project tempo or set independently in Hz (Hertz) values.
 In Hz mode, the rates range from DC (Direct Current) to 100 Hz.
 In Sync mode, rates range from a periodic duration of 32 bars through to speeds of
1/64-triplets. Triolic and punctuated values are also possible.
The LFOs are ideally suited for rhythmic effects which retain perfect synchronicity even
during tempo changes to the project.
Sync/Free Buttons
Part of the Rate parameter, these buttons allow you to select either synchronized or
free-running LFO rates. When toggling between modes the value is derived from the
project tempo and meter.
Curve
Allows you to define a freely-variable number of waveform variations, resulting in
subtle or drastic changes to your modulation waveforms.
The Curve parameter can even influence the sine waveform type.
 Curve value of 0.0: Pure sine wave
 Curve values above 0.0: Wave is smoothly changed into a nearly rectangular wave.