Kurzweil K2500 - PERFORMANCE GUIDE REV F PART NUMBER 910252 CHAP 6 Manual page 13

127 ON
This generates a constant control signal value of +1.
128 -ON
This generates a constant control signal value of -1 (the numeric entry 128 selects a
value of OFF in the MIDI Control Source list).
129 GKeyNum
Uses the key number (global) to modify whatever it is patched into. Higher notes
will have a very different effect than will lower notes. Users can use this new
Source to control any K2500 parameters such as F/X depth, or to scale amplitude
or pitch.
130 GAttVel
This is updated every time you strike another key (kind of a multi- trigger func-
tion). Users can patch this new Source to control parameters such as F/X Depth.
In addition to enabling (triggering) layers from any controller (works like an on/
off switch), users may now set the assigned controller's threshold (value, or range
of values from 0-127), thus defining the controller's active range where it will en-
able the layer.
For example, you could create a 32 layer nylon guitar where each layer is assigned
to a different V.A.S.T. Algorithm and each layer is enabled by discrete narrow ve-
locity ranges. This would produce 32 different sounding layers with 32 cross
switch points emulating a picked guitar where no two attacks are exactly alike. If
the layers' velocity ranges were very close together yet not overlapping, you could
create very subtle non-repeating changes. This kind of power usually eludes most
sample playback devices, as this technique uses only one layer of polyphony, due
to cross switching versus cross fading.
131, 132 GHiKey, GLoKey
These control sources work the same as GKeyNum except that they track the high-
est key currently held and the lowest key currently held respectively. By using one
of these as the only source for pitch tracking, you can create "mono-like" layers
within a polyphonic program.
Control Sources
Main Control Source List
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