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ACCESS VIRUS OS5

LFO (Edit Menu)Filter Envelope

For your SOURCEs, you have two different
types of modulation sources to chose from. The
first type comprises external MIDI controllers
such as the modulation wheel or breath control-
ler. We call these ”performance controllers” to
distinguish them from sound parameters such
as CUTOFF and REVERB that may also be ac-
cessed directly via MIDI controllers. (Although
strictly speaking, they’re on-board devices, the
modulation wheels of the VIRUS kc and VIRUS
indigo are also considered to be external MIDI
controllers since they are not actually compo-
nent parts of the sound generation system).

The second type comprises the sound genera-
tion system’s internal modulators, for example,
LFOs and envelopes. These also have fixed
modulation assignments (LFO AMOUNT, ENV
AMOUNT), but are freely available along with
the Modulation Matrix.

Let’s take a look at the internal modulation
sources:

-  AMPENV & FILTENV  The corresponding en-

velope is the modulation source.

-  LFO1, LFO2, LFO3  The corresponding LFO

is the modulation source.

-  VELOON  The note on velocity is the modula-

tion source. 

-  VELOOFF  The note off velocity is the modu-

lation source. According to the fact, that the
note off velocity is only known when the key
is released again, here, the VIRUS uses the
note on velocity, when the key is held. There-
fore both, note on- and off velocities, are ac-
tive here.

-  KEYFLW  The note number respectively the

pitch is used as the modulation source (Key-
follow)

-  RANDOM  A random number which remains

for the whole duration of the note on, is used
asthe modulation source here.

The control range of the source may be limited
via the AMOUNT values or inverted so that the
modulation occurs strictly within the desired
value range for the target parameter. For your
target parameters, you can chose from among
virtually all sound parameters that feature an in-
finitely variable control range – ergo, you have
more than 100 modulation destinations at your
disposal.

If you haven’t selected a source for one of the
ASSIGN options (SOURCE = OFF), the subordi-
nate parameters will not be displayed.

In addition to the three ASSIGN options, the us-
er interface features – as discussed earlier – a
freely definable modulation destination for LFO
1 and 2 called ASSIGN. 

 

Selects the modulation

source for the first modulation assignment. 

01111111111111111112

 1 ASSIGN 1
 Source ChanPres≤   

61111111111111111154

Selects the modu-

lation destination for the first modulation as-
signment. 

01111111111111111112

 1 ASSIGN 1
 Dest   Panorama≤   

61111111111111111154