Alesis ANDROMEDA A6 Reference Manual page 64

Chapter 2: Playing the A6
CURVE: Selecting the Portamento's Slope
Identical to the stages of an envelope, Portamento has a user-selectable property
called slope. This term refers to how gliding notes accelerate (speed up) or decelerate
(slow down) as each voice approaches its target note:
• A
LINEAR
they progress towards their target (destination) notes. In the illustration on the
next page, notice that the linear slope is depicted as a straight line (from where
we get the term "linear"). The glide doesn't speed up or slow down but keeps
an even rate of change.
• An
EXP
starts out slow then speeds up as it gets closer to its destination. Rather than a
straight line, it is represented by a curve. One of three exponential curves can
be selected.
• In contrast, the
starts out fast then slows down as it reaches its destination. It is represented by
a curve that is the opposite of the exponent. One of three logarithmic curves
can be selected.
• The SCURV
S-Curves can be selected:
SCURV1:
during the first half of its stage using
half using
The falling-amplitude of S-Curve 1 is the opposite of its rising-amp: the stage
decelerates during the first half using
half using
SCURV2
progression s-curve – the rising-amplitude of S-Curve 2 decelerates during the
first half using
The falling-amplitude of S-Curve 2 accelerates during the first half using
2 , then decelerates during the last half using
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slope means that gliding notes do not accelerate (or decelerate) as
(exponential) slope, however, accelerates towards the target notes: it
(logarithmic) slope decelerates towards the target notes: it
LOG
("S" Curve) combines the slopes of
The rising-amplitude of S-Curve 1 is characterized by acceleration
LOG 2 . This is commonly known as a forward progression s-curve.
.
EXP 2
: The opposite of S-Curve 1 – commonly referred to as a reverse
, then accelerates during the last half using
LOG 2
EXP 2 and LOG 2
, then decelerates during the last
EXP 2
, then accelerates during the last
LOG 2
LOG 2 .
A A6 R
NDROMEDA EFERENCE
. One of two
.
EXP 2
EXP
M
ANUAL