Access Virus User Manual - SoundProgramming.Net

ACCESS VIRUS OS4 31
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 center
position (12 o’clock). You can
hear how Filter-2 gradually modifies
the distorted signal. You can
set a RESONANCE value for Filter-2
if you press the FILT 2 SELECT button
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 controlled
via the CUTOFF pot. You can
dial in a wide range of sound-shaping
option via CUTOFF 2. Also try
modifying the resonances of both
filters as well as the SATURATION
curve to come up with different filtering
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 cutoff
frequency and the second as a
high pass with a high cutoff frequency,
the Virus will not generate
an audible signal when you set the
FILTER BALANCE pot to the center
position (12 o’clock).
Regardless of which FILTER
ROUTING option you chose, the
SATURATION stage is always post-
Filter-1, i.e. after Filter in the signal
chain.