Envelope Follower - Access VIRUS CLASSIC User Manual

If the selected signal source is a stereo source - i.e. IN L+R, AUX 1 L+R or AUX 2 L+R - then the
sound program is automatically switched internally to UNISON-MODE = Twin, regardless of the
UNISON MODE parameter setting so that the input signal is processed in stereo. In this case, the
UNISON parameters PAN SPREAD and LFO PHASE (see appropriate section) are active.
When you select an internal aux path as a signal source, you of course must route the signals of
another PART to this aux path via OUTPUT SELECT before you can establish a signal connection
between the two PARTS. Several PARTs can simultaneously access the external input or the internal
aux paths via INPUT SELECT.

Envelope Follower

The envelope follower generates a modulation signal from an audio signal. This modulation signal
can be used to control sound parameters. When the envelope follower is activated, it takes the
place of the filter envelope. This means that you can modulate the filters using the ENV AMOUNT
knob in the filter section. The envelope follower is also available as a modulation source in the
ASSIGN section in the form of the option called "FiltEnv".
MODE
Activates the envelope follower. Set to the OFF position, the envelope follower is inactive and the fil-
ter envelope works in the usual manner.
The remaining settings for FOLLOWER mode let you activate the envelope follower and, at the
same time, choose a signal source. Select signal sources the same way you would for INPUT
SELECT (see above). Note that this selection option is completely independent of the given input.
When you select a stereo signal and at the same time activate UNISON mode (Twin), the envelope
follower operates in real stereo.
Three filter envelope knobs are used to control the envelope follower when it is active:
110