Access Virus Rack XL, User Manual

Page: 145 / 194

ACCESS VIRUS RACK XL OS5
145
All abouts Inputs
PDF VERSION - RESTRICTIONS APPLY
ALL ABOUTS INPUTS
AUDIO INPUTS AND AUDIO ROUTING
The Virus is equipped with two inputs for exter-
nal signals. You can route these to its sound
generating components and use them as carrier
or modulator signals for the Vocoder.
OSC VOL / INPUT
When one of the two INPUT modes is activated,
the OSC VOL parameter rather than the oscilla-
tors controls the level of the input signal
patched into the Filter section and of course al-
so the gain of the SATURATION stage. In INPUT
Dynamic mode, the level can increase surpris-
ingly swiftly when you play several voices poly-
phonically. The reason for this is that, in
contrast to when you’re dealing with several os-
cillator signals, the voices are correlated be-
cause they are receiving an identical input
signal. In the event that the Virus generates dis-
tortion when you’re dealing with this type of sig-
nal routing set-up, be sure to back off the input
level a tad via the OSC VOL parameter.
INPUT LEVEL INDICATOR
Alternatively, the RATE LEDs of LFO 1 and 2
can also serve as level indicators for the left and
right external audio inputs. To this end, go to
the CTRL menu, select the menu item SYSTEM,
and set the Parameter LED mode to Input.
When the parameter is set to Auto, the Virus au-
tomatically activates this level indicator mode
when the selected SINGLE program accesses
the external audio inputs. The LEDs will flash
rapidly to indicate that the inputs are being
overloaded.
You should dial in a suitable input level on the
device that is sending the analog signals. The
reason for this is that you want to feed the high-
est possible clean signal level to the analog-to-
digital converters of the Virus so that they will
deliver the best possible performance. You
should only turn up INPUT BOOST as a last re-
sort because it is located post A/D converters
and boost signals digitally, which of course
doesn’t affect the level of the converters.
Signals within the Virus may also be overloaded
and may distort when their levels are too high.
Inherently, a virtual analog synthesizer’s reso-
nating filters and high level of polyphony lend
signal levels considerable dynamic potential.
We could only rule out this type of distortion en-
tirely by lowering the fundamental output of the
device significantly or by limiting specific pa-
rameters. However, this type of problem occurs
only in a very few, very specific scenarios. Since
the problem is so context-related, we chose not
to lower the device’s output power or limit its
parameters. Instead, we recommend that you
simply lower signal levels (Patch Volume, etc.)
to prevent undesirable distortion.
To help you keep an eye on signal levels, you
can activate LED mode to visually monitor the
levels and amount of distortion of the two audio
outputs.
ABOUT EFFECTS
DELAY/REVERB EFFECT SEND
The Effect Send parameter works like a classic
aux send knob on a mixer (post-fader), i.e. it ad-
justs the level of the global DELAY/REVERB ef-