Kurzweil K2500 - PERFORMANCE GUIDE REV F PART NUMBER 910252 CHAP 6 Manual page 10

Control Sources
Main Control Source List
62, 63
96
97
98
99
100
101
6-10
Global Random Variant 1 and 2 (GRandV 1, GRandV 2)
These are also bipolar and global, and generate random control signal values be-
tween -1 and +1 when assigned to a control source parameter. There is a subtle dif-
ference in the randomness of the signals they generate, therefore choosing between
them is a matter of preference.
Note State (Note St)
At any moment, any given note is either on or off; this is its Note State. Note State
can be used as a unipolar control source that responds to each note that's played.
It switches to +1 when the note starts, and stays on as long as the note is held on
(by the sustain pedal, for example), or by holding down the trigger for that note. It
switches to 0 when the note is no longer sustained by any means. For example, if
you play a note, then hold it with the sustain pedal, its Note State is still on (+1)
even if you've released the key that triggered the note. As soon as you release the
sustain pedal, the note's Note State switches to off (0), even if it has a long release
and you can still hear the release section of the note.
Key State (Key St)
This is a unipolar control source that responds to the motion of your MIDI control-
ler's keys. It switches to +1 when a key is pressed, and switches to 0 when the key
is released. Its effect differs from Note State in that when the key that switched it
on is released, it will switch off even if the note is sustained. If you're using a non-
keyboard MIDI controller, Key State will switch to 0 when the equivalent of a key
release is sent.
Key Number (KeyNum)
This is a unipolar control source that generates its signal value based on the MIDI
key number of each note triggered. That is, it generates a value of 0 in response to
MIDI key number 0, a value of 64 in response to MIDI key number 64, and so on.
Note that some parameters, such as Enable Sense on the Program Editor Layer
Page, will not accept this parameter. GKeyNum, controller number 129, would be
acceptable however.
Bipolar Key Number (BKeyNum)
This is like KeyNum, but generates a signal value of -1 in response to MIDI key
number 0, a value of 0 in response to MIDI key number 64, and a value of +1 in
response to MIDI key number 127.
Attack Velocity (AttVel)
This unipolar control source responds to Attack velocity values received at the
K2500's MIDI In port. Velocity values of 0 cause it to generate a signal value of 0,
while velocity values of 127 will generate a value of +1. All other velocity values
will result in signal values proportionally scaled between 0 and +1. Note that some
parameters, such as Enable Sense on the Program Editor Layer Page, will not ac-
cept this parameter. GAttVel, controller number 130, would be acceptable howev-
er.
Inverse Attack Velocity (InvAttVel)
This is the opposite of AttVel, generating a signal value of 0 in response to attack
velocity values of 127.