The Amplifier Envelope - Access Virus Rack User Manual

THE AMPLIFIER ENVELOPE

Long-term exposure to this sound will
definitely grate on your nerves, so let's
get started with changing it into a signal
you might enjoy hearing, beginning with
the volume characteristics.
Locate the two vertically arrayed buttons
next to the seven LEDs. Use these UP and
DOWN buttons to select from among the
seven parameter groups and/or sections.
The appropriate LED lights up to indicate
that the given section has been selected.
Select the ENV section. The labels on the
five encoder knobs for this section read
ATTACK, DECAY, SUSTAIN, SUS TIME and
RELEASE.
These controls will help you to dial in
volume characteristics called an amplifier
envelope and put an end to the nerve-
racking drone that may remind you of
one of those cheesy organs that you
hear in '60s B-movie sound tracks.
The section labeled ENV addresses the
envelope. On a synthesizer, an envelope
is used to modulate sound over time.
The Virus has two envelopes, one for vol-
ume (AMP ENV) and one for the filters
(FILT ENV), which we will learn more
about later. The five encoder knobs serve
to shape either the amplifier envelope or
the filter envelope. Make sure that you
can see AMP ENV in the display, and not
FILT ENV. If this is not the case, use the
PARAMETER buttons to set the section to
the amplifier envelope.
ACCESS VIRUS RACK 19
The Amplifier Envelope