The Virus As An Effect Device; Envelope Follower - Access VIRUS CLASSIC User Manual

The Virus as an Effect Device

You're free to install the Virus into your studio environment and use it as an effect device or signal
processor. For example, simply connect its external inputs to any available aux send bus or effect
send on your mixer or to the individual outputs of a sampler or other sound generator. This setup
lets you mix sundry signals outside the Virus and patch the mixed signals into the Virus for further
processing.
.. AND VICE VERSA
SECOND OUTPUT Balance lets you create a separate mix in the Virus itself. This signal may then be
patched out via the selected output (SECOND OUTPUT Select) to a mixer or directly to a connected
effect device, where it can be processed further.
Alternatively, this mix can also be routed to another PART of the Virus, where, for example, it can be
filtered or distorted. For this purpose, be sure to select the same aux bus for SECOND OUTPUT
Select and for the INPUT Select of the given PART.

Envelope Follower

This function of the Virus is a special delicacy. It really upgrades the process of filtering (or any other
processing) of an external audio signal. What we have here is a so called Envelope Follower that
can evaluate the volume envelope of an external audio signal with a selectable speed or inertia and
then creates an appropriate modulation signal. This signal can be used to control any Virus param-
eter via the Modulation Matrix. In UNISON Mode the Envelope Follower works in true stereo, you
can find the parameters in the effects menu under INPUT. One example for its application: A drum-
loop serves as the external signal; the Envelope Follower controls the filters cutoff frequency and
creates a typical "Autowah" effect, whereby the filter is opened according to the drumloop's volume
(respectively its beats). In addition to this, or as an alternative, you can control other parameters. Of
course you can also use the external signal as the modulation source without processing it in the
Virus at all.
When the Envelope Follower is activated it replaces the filter envelope, so that when Env Amount is
turned up, it directly affects the filter frequencies. Any other parameter can be modulated with the
Envelope Follower via the Modulation Matrix (ASSIGN). Select FiltEnv as the modulation source
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