Kurzweil K2500RS, Руководство музыканта

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Program Mode and the Program Editor
The Program Editor—Pages
6-26
starts at zero amplitude, and moves to its assigned level in the time speciÞed by its time value.
So the default settings of 0 seconds and 100% mean that the Þrst segment of the attack section
moves instantly from zero amplitude to 100% amplitude. Increase the time of Attack segment 1
if you want the sound to ramp up more slowly.
Attack segments 2 and 3 affect the sound only when you set a non-zero value for time. They
will then move to their assigned levels in the time speciÞed. Their starting levels are equal to
the Þnal levels of the preceding segment.
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 speciÞed. YouÕll hear a noteÕs 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 to a non-zero 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 speciÞed for that
segment. Release segment 1 starts at the Note Off event for each note, at the current amplitude
level of that noteÑwhether itÕs in the attack section or the decay section. It then moves to its
assigned level in the time speciÞed. Release segments 2 and 3 start at the Þnal levels of the
segments before them. Release segments 1 and 2 can be set to any level from 0 to 100%. Release
segment 3 always has a level of 0%, so you canÕt adjust its level. In place of its Level parameter
you see a parameter that lets you toggle between User envelopes and the soundÕs
preprogrammed ÒnaturalÓ envelope.
Loop Type
There are seven different values for Loop type.
A value of Off disables looping for the current layerÕs 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 Þrst, 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 Þrst, 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 itÕs held on by a pedal, by the IgnRel
parameter (described in the section entitled ÒThe LAYER PageÓ), or whatever.