E-Mu Ultraproteus, Руководство по эксплуатации, Страница: 115 / 307

79 Chapter 7: Preset Programming
PRESET PROGRAMMING
In the example below the function generator becomes a complex LFO through
the use of an “Always End” jump which
always forces a jump back to segment 1
from the end of segment 5. Thus the function generator constantly repeats
forming a low frequency oscillator.
FUNCTION GENERATOR DELTA & RANDOM LEVEL
There are 3 additional options in the function generator level screen, Delta Level
(level change), Random, and Random Delta (random change). To access the
Delta Level parameter, turn the level value of a function generator one unit past
+127. The delta (
∆
) symbol appears in the value field.
FUNC GEN F1S1
Level
∆
-127
Delta Level causes the level to change by the specified amount instead of
going to an absolute level value. If Level 1 was set to +127 and Level 2 was
∆
-
027, then the resulting level 2 value would be +100 (127-27=100).
The
∆
Level parameter can be quite useful when looping segments. In the
example below, segment 3 has a level of
∆
-016 and loops back to itself as long as
the key is held. Because the level is a change rather than an absolute amount,
the level decreases by -16 each time the segment loops.
1 2
3
5
4
Always Jump to 1 at End of Segment
080
If Note On
Jump to 3
127
16
32
48
64
80
96
112
-016
112
000