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CHAPTER 

14

The Parameters

SHAPE This control feature lets you 
determine the waveshape for the 
WAVE section (one of 64 variable 
spectral waveshapes). The wave-
shape 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 determines 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 combina-
tions of frequencies.

• When the SHAPE value is higher 
than that of the center position, 
then WAVE SEL/PW determines 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.