Access virus os4 Manuale Utente

CHAPTER 

5

Concept and Operation

In the Virus you can select from 
two basic operating modes, SIN-
GLE MODE and MULTI MODE. 

In SINGLE MODE, the Virus is able 
to generate a single sound pro-
gram only. All 24 voices, all effects 
and most importantly, all control 
features (with the exception of the 
MULTI button) function in conjunc-
tion with this one sound program. 
You might say a SINGLE program is 
a combination of all functions and 
effects that determine the sound 
of the Virus. In other words: A SIN-
GLE program is a ”sound” of the 
Virus, that can be stored and 
recalled. 

The Virus provides access to 512 
SINGLE sounds. Next to the 256 
RAM sounds (Bank A and Bank B), 
you have two banks available with 
a total of 256 factory sounds. These 
banks, C and D, are stored in the 
FLASH ROM and can not be over-
written via STORE.

The MIDI receive channel in SIN-
GLE MODE  is the Global Channel. 
You can change the Global Chan-
nel in the CTRL menu.

In MULTI MODE, the Virus can com-
bine up to sixteen (SINGLE) sound 
programs, among which the maxi-
mum available number of 24 
voices are allocated dynamically. 
All simultaneously available 
sounds can be manipulated in real-
time; for this purpose the control 
panel enables you to switch 
among the sixteen so-called 
PARTS.

In MULTI MODE, the actual sound 
parameters are augmented with 
other functions that deal with how 
the involved SINGLE programs are 
structured or organized. These 
include the volume levels of the 
single programs, their MIDI chan-
nels, output assignments, etc. 

On the Virus, we differentiated 
fundamentally between SINGLE 
mode and MULTI mode. This dis-
tinction is reflected in the contents 
of the menus: If the LED on the 
SINGLE button lights up, the CTRL 
and EDIT menus let you access the 
sound parameters of the current