Alesis ANDROMEDA A6 Reference Manual page 142

Chapter 6: Modulation and Envelopes
• An EXP
starts out slow then speeds up as it gets closer to its target level. Rather than a
straight line, it is represented by a curve. One of three exponential curves can
be selected:
EXP 1
EXP 2
EXP 3
• In contrast, the
starts out fast then slows down as it reaches its target level. It is represented by
a curve that is the opposite of the exponent. One of three logarithmic curves
can be selected:
LOG 1
LOG 2
LOG 3
• The
SCURV
curves can be selected:
SCURV1
SCURV2
Tip: The Attack, Decay and Release stages can have different slopes. You can mix
and match slopes any way you want within the same envelope.
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(exponential) slope, however, accelerates towards the target level: it
less steep than
EXP 2
standard exponential curve
steeper than
EXP 2
(logarithmic) slope decelerates towards the target level: it
LOG
less steep than
LOG 2
standard logarithmic curve, pictured above
steeper than
LOG 2
("S"-Curve) combines the slopes of
The rising-amplitude of S-Curve 1 is characterized by
acceleration during the first half of its stage using
decelerates during the last half using
known as a forward progression s-curve.
The falling-amplitude of S-Curve 1 is the opposite of its rising-
amp: the stage decelerates during the first half using
then accelerates during the last half using
The opposite of S-Curve 1 – commonly referred to as a reverse
progression s-curve – the rising-amplitude of S-Curve 2
decelerates during the first half using
during the last half using
The falling-amplitude of S-Curve 2 accelerates during the first
half using , then decelerates during the last half using
EXP 2
.
LOG 2
and
EXP 2 LOG 2
. This is commonly
LOG 2
.
EXP 2
, then accelerates
LOG 2
.
EXP 2
A A6 R
NDROMEDA EFERENCE
. One of two S-
, then
EXP 2
LOG 2 ,
M
ANUAL