User Guide

ACCESS VIRUS OS4 157
Distortion
DISTORTION
Curve Here’s a rundown on the
various DISTORTION modes:
 OFF The signal is not processed.
 LIGHT, SOFT, MIDDLE, HARD
Different analog distortion curves
with different characteristics and
intensities.
 DIGITAL Digital distortion with
hard clipping.
 SHAPER Sine characteristic
curve with several wave cycles.
With the Shaper, you can drasti-
cally warp signals. In some cases,
the results are similar to the spec-
tra of linear frequency modula-
tions.
 RECTIFIER Continuous rectifica-
tion of the signal; this type of dis-
tortion is independent of the given
level.
 BITREDUCER Continuous reduc-
tion of the digital signal’s bit
depth; generates digital quantiza-
tion noise.
 RATEREDUCER Continuous
reduction of the digital sampling
rate; generates digital aliasing.
 LOWPASS -pole low-pass filter
for moderate processing of high
frequencies.
 HIGHPASS 1-pole high-pass fil-
ter for moderate processing of low
frequencies.
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1 DISTROTION
Curve Light≤
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Intensity For the distortion curves,
this intensity range is equivalent
to a gain boost of 12 decibels, in the
case of the ”Digital” curve as much
as 24 decibels. A special feature of
the Virus’ SATURATION stage is
that, despite the fact that its gain
is boosted, the signal level is kept
constant so that only the tonal
color or timbre of the sound is var-
ied.