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Table Of Contents
114 Chapter 9 Modulation
Tremolo
The Tremolo effect modulates the amplitude of a signal, resulting in periodic volume
changes. You’ll recognize this effect from vintage guitar combo amps (where it is
sometimes incorrectly referred to as vibrato). The graphic display shows all parameters,
except Rate.
 Depth slider and field: Determines the modulation amount.
 Rate knob and field: Defines the frequency, and therefore the speed, of the LFO.
 Symmetry and Smoothing knobs and fields: Use these to set the shape of the
modulation.
 Phase knobs and fields (only available in stereo instances): Controls the phase
relationship between the individual channel modulations. At 0°, the extreme values
of the modulation are achieved simultaneously for all channels. 180° or –180° is equal
to the greatest possible distance between the modulation phases of the channels.
 Offset slider and field (extended parameter): Sets the amount that the modulation
(cycle) is shifted to the left or right, resulting in subtle or noticeable tremolo
variations.
Symmetry and Smoothing
If Symmetry is set to 50% and Smoothing to 0%, the modulation has a rectangular
shape. This means that the timing of the full volume signal is equal to that of the low
volume signal, and that switching between both states occurs abruptly. You can define
the loud/quiet time ratio with Symmetry and make it fade gently in or out with
Smoothing.