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ACCESS VIRUS OS5
143
Bear in mind that the sequencer doesn’t indi-
cate the parameters addressed via the control
features of the VIRUS by their names; instead, it
indicates merely the controller and/or polypres-
sure numbers. If you split up these control fea-
tures by recording them to different tracks and
giving these tracks names that give you an idea
of what they contain, you’ll find it much easier
to work with these tracks.
NOTES ON ADAPTIVE PARAMETER 
SMOOTHING
We developed a feature called Adaptive Param-
eter Smoothing for the VIRUS that assures au-
tomated knob movements are carried out so
that parameter changes are not audible in steps
commonly called zipper noise.
This means that the VIRUS responds just as
smoothly to your sound-shaping actions as did
the analog synthesizers of yore that were used
before the devices that could store sounds
were introduced. To this end, the response of
the VIRUS is manipulated so that it smoothes
changes in parameter value. Conveniently, this
feature is dynamic, meaning that it takes into
account the way these values change. Howev-
er, smoothing is many cases undesirable. For
example, left to its own devices, this feature
would smooth deliberate, more radical knob
movements where one value ”jumps” to the
next, thus creating unintentional ”glitches”. For
example, this type of response would defeat the
purpose of effects generated by a step se-
quencer’s controller messages as well as gater
effects that you programmed in your sequencer.
You can adjust Adaptive Parameter Smoothing
via a function called Control Smooth mode (in
the EDIT menu; COMMON: SmoothMode) to
accommodate different sonic situations:
-  OFF  Adaptive Control Smoothing (parameter
smoothing) is disabled.
Application: Parameter jumps are carried out
without glitches. This option is ideal when you
want to create gating and similar effects (e.g.
via a step sequencer) where parameter values
change abruptly.
Side effect: Continuous parameter changes –
be it movements controlled via automated
knobs or via MIDI -  are incremental, which
means you’ll have to take zipper noise into
account.
-  ON  Adaptive Control Smoothing is enabled.
Application: Parameter changes are carried
out continuously and smoothly.
Side effect: Parameter jumps are also carried
out continuously, meaning that glitches may
be generated inadvertently.
-  AUTO  Adaptive Control Smoothing analyz-
es the nature of incoming parameter changes
and carries these out continuously or abrupt-
ly, as the case may be.
Application: Both continuous as well as sud-
den parameter changes may be implemented
in the same sound.
Side effect: This analysis of radical parameter
changes can’t cope with jumps that occur in
rapid succession.
-  NOTE  Adaptive Control Smoothing works
continuously, but jumps when a new note is
played.
Application: Both continuous as well as sud-
den parameter changes may be implement-
ed, whereby the jumps are always inserted at
the beginning of a new note. Consequently,
this option is well-suited when you want to
control sounds via a step sequencer.