Notes On Adaptive Parameter Smoothing - Access Virus Rack User Manual

NOTES ON ADAPTIVE PARAMETER
SMOOTHING
We developed a feature called Adaptive
Parameter Smoothing for the Virus that
assures automated 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. However, smoothing is many
cases undesirable. For example, left to its
own devices, this feature would smooth
deliberate, more radical knob move-
ments 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 sequencer'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; COM-
MON: SmoothMode) to accommodate
different sonic situations:

Notes on Adaptive Parameter Smoothing

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 sim-
ilar 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 car-
ried out continuously and smoothly.
Side effect: Parameter jumps are also
carried out continuously, meaning that
glitches may be generated inadvertently.
AUTO Adaptive Control Smoothing
analyzes the nature of incoming param-
eter changes and carries these out con-
tinuously or abruptly, as the case may be.
Application: Both continuous as well as
sudden parameter changes may be
implemented in the same sound.
ACCESS VIRUS RACK 173