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ACCESS VIRUS OS4

The parameters of the VIRUS vocoder

Modulator Frequency Offset  
(Knob: CUTOFF 2, Default: 0 (mid-
dle)) A linear shift of the modula-
tor bank’s central frequencies 
against the carrier bank, results in 
pitch-shifting and ”mickey mouse” 
effects. CUTOFF2 creates an offset 
of the modulator to the carrier 
bank.

Q-Factor (Knob: RESONANCE, 
Default: 0 (left) The resonance 
parameter controls the quality of 

the filter bands (like an equalizer’s 
q-factor). Depending on the filter 
select setting, the banks are 
adjusted together or indepen-
dently. FILT1 is assigned to the car-
rier, FILT2 controls the modulator. A 
low quality factor of the carrier 
bank leads to a fairly neutral repro-
duction of the carrier signal. A 
higher quality creates a higher res-
onance in the filter bands, which 
therefore make the overall sounds 
more artificial. The effect is less 
effective on the modulator bank. 
Here, the filter quality controls the 
”gab” in between the individual fil-
ters. Depending on the modulator 
signal, if you soften or tighten the