LinPlug Octopus - Manual (Page 27)

Fix Points
The Fix Points control is an aid to editing that constrains the movement of
envelope points. When the Fix Points control is switched Off and an End
Point is moved horizontally, the portion of the envelope following the
selected End Point moves relative to the selected End Point. When the Fix
Points control is switched On, the position of all End Points other than the
currently selected End Point are fixed and cannot be moved.
“+-”
The +- control determines whether the envelope is unipolar or bipolar.
When the +- control is off the envelope generated is unipolar, that is, its
values range from 0.0 to 1.0. This allows the envelope to function as a
normal amplitude envelope. When the +- control is switched On the
envelope generated is bipolar, that is, its values can range from -1.0 to
+1.0. This allows the envelope to function like an LFO which oscillates
between positive and negative values.
Numerical Display
The Numerical Display in the upper-right corner of the module shows three
values for the currently selected point: Level, Curve, Delta-time. The Level
and Delta-time values apply to End Points while the Curve value applies to
Curve Points. The Level display indicates the absolute vertical position of
the segments End point. The Delta-time display shows the distance in time
of the current point from the previous End Poin. The Curve display shows a
measure of the curvature of the line connecting the two End Points. A high
curvature value means that the transitional part of the envelope occurs early
in the envelope. The lower the curvature value, the later in the envelope the
curvature occurs. The time parameter (in seconds) is displayed across the
bottom of the Envelope Editor.
KBD/VEL
The KBD and VEL controls display the Envelope Keyboard Level Scaling
settings and the Envelope Velocity Level Scaling settings. These are best
thought of as two scaling maps that calculate the final envelope values
according to the following formula:
Manual 25