Access virus os4 Manuale Utente

ACCESS VIRUS OS4

Filters – Panel

FILT 1 SELECT & FILT 2 SELECT This 
control feature is used to allocate 
the three knobs RESONANCE, ENV 
AMOUNT

 and KEY FOLLOW to the 

first filter, second filter or both fil-
ters. The currently active assign-
ments are indicated by the 
integrated LEDs. To control both fil-
ters simultaneously via the knobs, 
you must first press both buttons 
simultaneously. SELECT pertains to 
the corresponding knob located on 
the Virus only, but not to the sound 
parameters it controls. These 
parameters exist  separately in 
both filters regardless of the 
SELECT setting. This is why for 
instance you should control the 
resonances of the respective filters 
via different MIDI Controllers. In 
actuality SELECT only determines if 
the knob in question sends its 
value to the first filter, second filter 
or both filters.

ATTACK Determines the amount of 
time it takes for the filter envelope 
to rise to its maximum level. The 
higher the ATTACK value, the 
longer it takes for the envelope to 
rise to maximum volume after the 
start of a note.

DECAY Determines the amount of 
time it takes for the filter envelope 
to fade out. The higher the DECAY 
value, the longer it takes for the 
envelope to fall from its peak level 
to the SUSTAIN value.

SUSTAIN Determines a variable 
level for the filter envelope at 
which it remains after the end of 
the DECAY phase (see appropriate 
section). The duration of the SUS-
TAIN

 phase depends on the TIME 

value (see appropriate section).