Envelope Control - Kurzweil Forte Manual

Program Edit Mode
The Amplitude Envelope (AMPENV) Page
Regardless of the loop type and the number of loops, each note goes into its release section
as soon as its Note State goes off (that is, when a Note Off is generated). The envelope will
continue to loop as long as Note State remains on, whether it's held on by a pedal, by the
IgnRel parameter (described in

Envelope Control

The parameters on the bottom half of the AMPENV page give you realtime control over
the rates of each section of the amplitude envelope for both natural and user envelopes. The
Impact parameters are also available. The column on the left lists the three section types of
the amplitude envelope (as well as Impact), and each corresponding line lists the values for
the five DSP control parameters that are available for each section type.
The DSP control parameters are: Adjust, Key tracking, Velocity tracking, and Source/Depth,
listed at the top of each corresponding column. When AMPENV is set to User mode, the
Attack and Release sections on this page apply to the attack and release sections on the
AMPENV page. It's important to keep in mind that the values for the various parameters
are cumulative, meaning that, if for example you set attack to be controlled by Keytrk and
VelTrk, the resulting change on Attack would be affected by the combination of the values
produced by KeyTrk and VelTrk. This will affect the attack sections of natural envelopes.
Additionally, the bottom line of this page lets you make use of the Impact feature, which lets
you boost or cut the amplitude of the first 20 milliseconds of a note's attack.
The parameters and values in the following table 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 only available as a parameter to control attack sections of the amplitude envelope
(however, you can assign attack velocity as the value for the Source parameter in each of the
sections).
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 set the Decay Adjust parameter to a value of 2.000x, you've
increased the decay rate by a factor of two, making it twice as fast. The rate increases to
100% per second, and the decay time is now one second instead of two.
7-52
"Ignore Release" on page 7-32) or anything else.