User Guide

ACCESS VIRUS OS4 239
SATURATION for Added Grit and Dirt
SATURATION FOR
ADDED GRIT AND DIRT
SATURATION and OSC VOL
In serial filter modes, the SATURA-
TION unit is located between the
filters. This configuration gives you
the option of first filtering the
oscillator signal in the conven-
tional manner, then distorting it,
and finally sending the distorted
signal to a second filter, where it
can be processed again as you see
fit.
Next to serving as a volume con-
trol for the OSCILLATOR section, in
the right half of its control range,
the OSC VOL knob lets you control
the gain level of the distortion
module (SATURATION) within a
wide range of 12 decibels, , without
increasing the volume level. At 24
decibels, the control range of the
"Digital" SATURATION Curve is
even greater. The OSC VOL knob
retains its function as a volume
control in Input mode as well as in
Vocoder mode.
SATURATION Curve: Shaper
The Shaper’s saturation response
differs from that of the other SAT-
URATION Curves. Its characteristic
curve is a sine wave with several
cycles. The Shaper lets you radically
bend signals, whereby the results
are at times reminiscent of the
spectra of linear frequency modu-
lation. The response of the Shaper
depends largely on the input sig-
nal. This means that the Filter-1
settings have a profound impact
on the outcome. You should use
Filter-2 independently of Filter-1 in
order to further process the raw
output signal of the Shaper. As is
the case with the other SATURA-
TION Curves, the OSC VOL knob is
used to tweak the characteristics
that shape its timbre . In particular
in the case of the Shaper, this knob
influences the complexity of the
generated sound to a considerable
degree.