Specifications

PARAMETER REFERENCE MANUAL40
FILTERS
About the Analog 1pole..4pole lter modes: In addition to the classic Virus lters, famous for their smooth,
musical character, the Virus TI Snow offers an analog-style lter, inspired by the ‘ladder’ cascade array of
the Minimoog synthesizer. However, where the original offered only a 4-pole lowpass, we have provided the
option to choose between 1 and 4 poles on a single lter. In fact, by using Filter2 as well, it’s possible to
achieve a 5 or even 6 pole cascade lter! Embedded saturation and resonance that can be pushed all the
way to self-oscillation ensure a very convincing analog character.
Tip: Please be aware that when using the Analog lter, the polyphony for that Part will be reduced by up to
50%.
¦ Key Follow
-64 to +63: How much cutoff follows the MIDI note and pitch bender.
¦ Env Polarity
Positive, Negative: The effect of Env Amount on lter1 can be inverted by setting this parameter to Negative.
Filter-2
¦ Cutoff
0 to 127 or -64 to +63: Filter2 threshold frequency. If Cutoff Link is active, lter2 cutoff becomes a bipolar
offset to lter1 instead of an absolute value.
Modulation destination “Filter2 Cutoff”.
¦ Resonance
0 to 127: Accentuation of the lter2 Cutoff frequency. The actual effect of resonance depends on the se-
lected Mode (see below).
Modulation destination “Filter2Resonance”.
¦ Env Amount
0 to 127: Filter2 envelope amount i.e. the amount of lter envelope applied to its cutoff. Note that this can
be inverted by changing the polarity.
Modulation destination “Filter2 Env Amount”.
Filter-1
¦ Cutoff
0 to 127: Filter1 threshold frequency.
Modulation destination “Filter1 Cutoff”.
¦ Resonance
0 to 127: Accentuation of the lter1 Cutoff frequency. The actual effect of resonance depends on the se-
lected Mode (see below).
Modulation destination “Filter1 Resonance”.
¦ Env Amount
0 to 127: The amount of lter envelope applied to lter1 Cutoff. Note that this effect can be inverted.
Modulation destination “Filter1 Env Amount”.
¦ Mode
Filter Mode Meaning
Low Pass LP. Allows frequencies below the cutoff point to pass through i.e rejects those above the
cutoff point
High Pass HP. Allows frequencies above the cutoff point to pass through i.e. rejects those below the
cutoff point
Band Pass BP. Allows frequencies close to the cutoff point to pass through i.e. simultaneously rejects
those above and below the cutoff point
Band Stop BS. Rejects frequencies close to the cutoff point i.e. allows frequencies above or below the
cutoff point to pass through. Note that Resonance effectively narrows this band, making the
effect actually more subtle.
Analog 1 .. 4 Pole Emulation of a classic analog cascade (or ladder) lter, but with a variable number of poles.
In this mode, the Saturation Type is ignored - it is replaced by MiniMoog™ style lter
saturation. This type is interesting for experimentation, often yielding surprising results when
the resonance is set very high.