Kurzweil K2500 Reference Manual page 52

Control Sources
Main Control Source List
116
117
118, 119
120
121, 122
123
124
125
126
6-12
degrees, the signal value of LFO1ph is 0. When the phase of LFO1 is 270 degrees,
the signal value of LFO1ph is -1.
LFO2
This functions exactly the same as LFO1, when the Globals parameter is set to Off
(on the COMMON page in the Program Editor). When the Globals parameter is set
to On, LFO2 becomes global (GLFO2).
LFO2 Phase (LFO2ph)
This functions exactly the same as LFO1ph, responding to the cycle of LFO2.
FUN3, FUN4
These function exactly the same as FUNs 1 and 2, when the Globals parameter is
set to Off (on the COMMON page in the Program Editor). When the Globals pa-
rameter is set to On, FUN4 becomes global (GFUN4).
Amplitude Envelope (AMPENV)
This programmable unipolar control source lets you vary the effect of a control
source parameter over time. See "The AMPENV Page" in Chapter 6 in the Perfor-
mance Guide .
Envelopes 2 and 3 (ENV2, ENV3)
These are programmed in the same way as AMPENV, but they can be bipolar.
Loop State (Loop St)
This unipolar control source switches to +1 when the currently playing sample
reaches its LoopStart point. If you've programmed a sound with a User amplitude
envelope, Loop St will always be on (+1) for that sound. See Chapter 15 in the Per-
formance Guide for more about sample loops.
Sample Playback Rate (PB Rate)
The signal value of this bipolar control source is determined by the sample play-
back rate of each note. The playback rate is a function of the amount of transposi-
tion applied to a sample root to play it at the proper pitch for each note. If you
trigger a note where a sample root is assigned, the PB Rate signal value for that
note is 0. If the note is above the sample root, the sample is transposed upward, and
its playback rate is higher than that of the sample root. Consequently the PB Rate
signal value for that note will be positive. If the note is below the sample root, the
PB Rate signal value will be negative.
Attack State (Atk State)
This unipolar control source switches to +1 and back to 0 very quickly with each
note start.
Release State (Rel State)
This unipolar control source switches to +1 when a note is released, and stays on
until the note has completed its release (faded to silence), then it switches to 0. It
will stay on if a note is sustained, even if its trigger (key, string, whatever) is re-
leased.