Access Virus Rack XL, User Manual

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ACCESS VIRUS RACK XL OS5
147
Filters
PDF VERSION - RESTRICTIONS APPLY
ate extremely complex spectra, whereby inhar-
monic frequency components are filtered out
(so to speak) in the course of synchronization.
An infinite number of new harmonic spectra can
be thus generated with the parameters FM
AMOUNT and OSC2 SEMITONE. Moreover,
these spectra can be modulated continuously
via envelopes and LFOs. FM and SYNC will of
course also work with the 64 digital waveforms.
FILTERS
24-DB FILTER VARIATIONS
You have two options for using the 24-dB filters
of the Virus.
You can cascade the two 12-dB filters in SER
4 mode.
You can use Filter-1 as a 24-dB filter in SER 6
mode, whereby Filter-2 is faded out via FILT
BALANCE (to the left). If you want to create a
sound with resonance, you should try out both
options. When you do, you’ll find that the sound
of the resonance is different despite the fact
that filters have the same slope. The cascading
option (SER 4) gives you a higher Q factor with
a lower resonance peak. For direct A/B com-
parison, you can store both versions in consec-
utive SINGLE memory slots and switch back
and forth between them at will.
FILTER BALANCE
The filter section of the Virus puts slopes of 12,
24 and 36 dB/oct. at your disposal. In addition,
the FILT BALANCE parameter lets you morph
smoothly from slope to another, which effec-
tively makes it infinitely variable. Set the filter
routing option to SER 6 and both filters to low-
pass (LP). This gives you a serial setup com-
prised of a 24-dB and a 12-dB filter. When you
set the FILT BALANCE knob to the center posi-
tion, you end up with a filter that has a slope of
36 dB/oct. As you turn the knob to the left,
you’re fading Filter-2 out and consequently
steadily reducing the slope until you arrive at 24
dB/oct. You can morph from 24 decibels to 12
decibels by using the filter routing option SER
4. In this configuration, both filters have a slope
of 12 dB/oct., so it doesn’t matter in which di-
rection you change the FILT BALANCE.
FILTER ROUTING: SPLIT
In Filter SPLIT mode, each of the two oscillators
sends its signal into one of the two filters. Each
filtered signal, in turn, is sent into a separate
VCA. The two VCAs can be spread in the pano-
rama via the UNISON Pan Spread parameter.
The difference to UNISON mode is that you on-
ly have one oscillator and one filter available for
each side, although each with the full comple-
ment of voices.
SATURATION FOR ADDED
GRIT AND DIRT
SATURATION AND OSC VOL
In serial filter modes, the SATURATION unit is
located between the filters. This configuration
gives you the option of first filtering the oscilla-
tor signal in the conventional manner, then dis-