Kurzweil PC3K6, Руководство музыканта

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Program Mode
The Envelope 2 (ENV2) and Envelope 3 (ENV3) Pages
6-43
Decay Segment
The decay section has only one segment. It has values for time and level, just as for the attack
section. The decay section begins as soon as the attack section has been completed. It starts at the
same amplitude level as the attack segment preceding it, and moves to its assigned level in the
time specified. You’ll hear a note’s decay section only when the attack section is completed
before a Note Off message is generated for that note.
To create a sustaining envelope, simply set the Decay segment’s level to a nonzero value.
Release Segments
Like the attack and decay sections, each of the three segments in the release section has values
for time and level. Each segment reaches its assigned level in the time specified for that segment.
Release segment 1 starts at the Note Off event for each note, at the current amplitude level of
that note—whether it’s in the attack section or the decay section. It then moves to its assigned
level in the time specified. Release segments 2 and 3 start at the final levels of the segments
before them. Release segments 1 and 2 can be set to any level from 0 to 150% . Release segment 3
always has a level of 0% , so you can’t adjust its level. In place of its Level parameter you see a
parameter that lets you toggle between User envelopes and the sound’s preprogrammed natural
envelope.
Loop Type
There are seven different values for Loop type.
A value of Off disables looping for the current layer’s amplitude envelope.
Values of seg1F , seg2F , and seg3F are forward loops. In each case, the amplitude envelope plays
through the attack and decay sections, then loops back to the beginning of the first, second, or
third attack segments, respectively.
Values of seg1B , seg2B , and seg3B , are bidirectional loops. The amplitude envelope plays
through the attack and decay sections, then reverses and plays backward to the beginning of the
first, second, or third attack segment, respectively. When it reaches the beginning of the assigned
attack segment, it reverses again, playing forward to the end of the decay section, and so on.
Number of Loops
A value of Inf makes the amplitude envelope loop until a Note Off is generated. Values of 1
through 31 indicate how many times the loop will repeat after the amplitude envelope has
played once through its normal cycle.
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 the section entitled The LAYER Page on page 6 ‐ 22), or whatever.
The Envelope 2 (ENV2) and Envelope 3 (ENV3) Pages
The PC3K offers two envelopes in addition to AMPENV. Like AMPENV, ENV2 and ENV3 can
be assigned like any other control source. Unlike AMPENV, however, ENV2 and ENV3 can be
bipolar. This means that you can set negative values for them. (Obviously, you can’t have an
amplitude less than zero, so AMPENV is unipolar—the values range from either 0 to 100% or 0
to 150% .) A bipolar envelope controlling pitch, for example, could modulate the pitch both
above and below its original level.