Osc Section (Encoder); Oscillator 1; Oscillator 2 - Access Virus Rack XL User Manual

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CHAPTER 7
The Parameters
OSC Section
(Encoder)
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OSCILLATOR 1

The following section lists all parameters in the
Virus, each with a brief definition or explanation.
The function of the Encoders depends on the
selected section and the currently active dis-
play menu. If the given Encoder does not have
an assignment, the corresponding LED on the
front panel will extinguish. If no menu is activat-
ed (none of the seven section LEDs is illuminat-
ed) the Encoder assignments are determined by
the Edit section.
SHAPE
This control feature lets you determine the
waveshape for the WAVE section (one of 64
variable spectral waveshapes). The waveshape
is infinitely variable from sawtooth through to
pulse waves. Wave or pulse width selection is
executed via the SHAPE and WAVE SEL/PW
control features (see appropriate section): If
SHAPE has a value less than the value of the
"center position", then WAVE SEL/PW deter-
mines the waveshape; if the SHAPE value is
higher than that of the center position, then
WAVE SEL/PW determines the pulse width.
WAVE SEL/PW
has two functions, depending on the SHAPE
(see appropriate section) value:
When SHAPE has a value lower than that of
the "center position", then WAVE SEL/PW lets
you select from the 64 spectral waveshapes
available in the ROM of the Virus. Waveshape 1
is a sine wave; No. 2 a triangle, the remainder of
the waves feature different combinations of fre-
quencies.
When the SHAPE value is higher than that of
the "center position", then WAVE SEL/PW de-
termines the pulse width: At the far left position
the pulse width is 50%, at the far right it is 0%,
which means the wave no longer oscillates.
SEMITONE
Determines the interval between the second os-
cillator and the first oscillator: Control range +/-
48 semitones, assigned in semitone steps.
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OSCILLATOR 2

SHAPE
Same as OSCILLATOR 1; see paragraph above.
WAVE SEL/PW
Same as OSCILLATOR 1; see paragraph above.