6
Interpole
Envelope Follower and ADSR
As mentioned earlier, the envelope section
operates in two modes: Envelope Follower
or ADSR Envelope. The controls are
arranged such that, so far as is possible,
they apply to both modes of operation.
However, depending on the mode, other
functions—or perhaps no function—are
assigned to the controls.
Envelope Follower
The Envelope Follower is enabled when
the Gate/Env switch is set to the
Env
position. The Intern/Extern switch then
selects the input signal for the envelope
follower (see the
Mode chapter). The
envelope follower examines the amplitude
of the input signal and converts it to a signal
for use elsewhere as a modulation signal.
The
Sensitivity control adjusts an optimal
level for the modulation. The
Attack and
Decay settings adjust the accuracy with
which the envelope follower tracks the input
signal. In this operating mode, the
Sustain
and
Release settings are not used.
Sensitivity
Controls the intensity of the of the envelope
follower’s modulation signal. Using the
signal LED you can ascertain the level
supplied by the envelope follower. The LED
brightness follows the signal level. The LED
should light brightly at the loudest
passages, and continue to follow the signal
otherwise. If the LED is constantly lit, the
envelope follower is overridden. In this
case reduce the sensitivity somewhat.
Attack
Controls the time the envelope follower
takes to respond to rising levels of the input
signal.
Decay
Controls the time the envelope follower
takes to respond to falling levels of the
input signal.
