Kurzweil K2500 - PERFORMANCE GUIDE REV F PART NUMBER 910251 CHAP 6 Manual page 32

Program Mode and the Program Editor
Program Editor—Envelope Control (ENVCTL) Page
Program Editor—Envelope Control (ENVCTL) Page
Envelopes are control sources with outputs that evolve over time without repeating (unless you
want them to). You can make the envelopes even more powerful by using envelope control.
This gives you realtime control over the rates of each section of the envelopes. Press the
ENVCTL soft button to reach the ENVCTL page.
EditProg:ENVCTL||||||||||||<>Layer:1/1||
||||||||||||||||||||||||||||||||||||||||
|||||Adjust:KeyTrk:VelTrk:Source:Depth:|
Att:|1.000x|1.000x|1.000x|MIDI73|1.000x|
Dec:|1.000x|1.000x||||||||MIDI72|1.000x|
Rel:|1.000x|1.000x||||||||MIDI72|1.000x|
Imp:|0.0dB|||0.00d|0.0dB||OFF||||0.0dB||
<more||AMPENV|ENV2|||ENV3|||ENVCTL|more>
The display's top line reminds you of the current layer. The first line of text in the center of the
display shows five of the common DSP control parameters: Adjust, Key tracking, Velocity
tracking, and Source/Depth.
This page is a table showing the five envelope control parameters, and their values for each of
the three sections of the envelopes. Additionally, the line above the soft buttons lets you make
use of the Impact feature, which adds an amplitude overshoot to the first 20 milliseconds of a
note's attack. It's important to keep in mind that if you set up an envelope control source, it
affects Envelopes 2 and 3, as well as the amplitude envelope (Natural or User). Furthermore, the
values for the various parameters are cumulative. With the exception of Impact, though,
ENVCTL does not affect the attack sections of natural envelopes.
The parameters and values in the following list apply to each of the three envelope sections—
attack, decay, and release. We'll describe them only once, since their functions are largely the
same for each envelope section. The only difference is with velocity tracking, which is hard-
wired to control only the attack sections of the envelopes (you can assign attack velocity as the
value for the Source parameter in each of the sections, however).
The values of each of these parameters multiply the rates of the envelope sections they control.
Values greater than 1.000x make the envelope sections run faster (they increase the rate), while
values less than 1.000x make the envelope sections run slower. Say for example that on the
current layer's AMPENV page you had set the Decay section's time at 2.00 seconds, and its
level at 0%. This sets the layer's amplitude to fade to silence two seconds after the completion
of the last attack segment. The decay time is two seconds; the decay rate is 50% per second.
Now if you select the ENVCTL page and set the Decay Adjust parameter to a value of 2.000x,
you've increased the decay rate by a factor of two. The rate increases to 100% per second, and
the decay time is now one second instead of two.
PARAMETER
ADJUST
KEY TRACKING
VELOCITY TRACKING
SOURCE
DEPTH
Adjust
This is the familiar Coarse adjust found on many other pages. Use it here to change the rate of one
of the envelope sections without reprogramming the envelope itself. This parameter doesn't give
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RANGE OF VALUES
(Att, Dec, Rel)
0.018 to 50.000x
0.018 to 50.000x
0.018 to 50.000x
Control Source list
0.018 to 50.000x