Access virus os4 Manual De Usuario

ACCESS VIRUS OS4

The Second Filter

Yet another experiment in which 
you can come up new filtering 
characteristics that are typical of 
the Virus:

Set the FILTER BALANCE pot to the 
center position (12 o’clock) and 
CUTOFF

 2 to the maximum level. 

The FILTER ROUTING operating 
mode must remain SER 6. Set CUT-
OFF

 and RESONANCE to a middle 

value and select a clearly audible 
SATURATION

 curve.

Now you can filter this complex 
signal produced by a combination 
of the saturation stage and the 
Filter-1 yet again. Rotate the CUT-
OFF

 2 pot slowly towards the cen-

ter position (12 o’clock). You can 
hear how Filter-2 gradually modi-
fies the distorted signal. You can 
set a RESONANCE value for Filter-2 
if you press the FILT 2 SELECT but-
ton and rotate the RESONANCE pot 
to the desired position. Set the 
CUTOFF

 2 pot to a position to the 

right of the center position. This 
configuration can be described as a 
complex non-linear filter set up 
where the cutoff frequency is con-
trolled via the CUTOFF pot. You can 
dial in a wide range of sound-shap-
ing option via CUTOFF 2. Also try 

modifying the resonances of both 
filters as well as the SATURATION 
curve to come up with different fil-
tering characteristics.

Now experiment with the diverse 
filter modes and listen closely to 
the effect of the parameters RESO-
NANCE

, ENV AMOUNT and KEY 

FOLLOW in conjunction with the 
SELECT button. Please also keep in 
mind that the chances of choking a 
sound off  are substantially greater 
when you are using both filters: 
For instance, if the first filter is 
used as a low pass with a low cut-
off frequency and the second as a 
high pass with a high cutoff fre-
quency, the Virus will not generate 
an audible signal when you set the 
FILTER

 BALANCE pot to the center 

position (12 o’clock).