Section 9 — WaveSample and Layer Concepts
Modulators
7
• VEL 1, VEL, VEL 2 — Velocity
Velocity means how hard you strike a key. Selecting VEL 1, VEL, or VEL 2 as a modulator
allows you to modulate any manual level with velocity. Velocity as a modulation source only
goes positive (though assigning a negative modulation amount will make the net result be to
reduce the level with increased velocity). Each velocity modulator has its own response curve,
shown below:
VEL
(linear)
0
50
100
50
100
0
VEL1
(convex)
0
50
0
50
100
100
VEL2
(concave)
0
50
100
50
100
OUTPUT
Keyboard
Velocity
Keyboard
Velocity
Keyboard
Velocity
• KBD — Keyboard Tracking
This uses the position of a note on the keyboard as a modulator. The scaling effect of this
modulator is figured over the full 128 MIDI key numbers:
+100
+50
0
-50
-100
ASR–10 keyboard
88-note piano keyboard
MIDI Key numbers 0-127
As the above illustration shows, the effect on KBD as the modulator goes negative as well as
positive. The effect of KBD is to reduce the manual level of notes below the break point
(middle C, C4, MIDI Note #60), and increase the manual level on notes above the break point.
Negative modulation amounts will do the opposite.
• PITCH — Pitch Bend Wheel
This complex modulator groups the Pitch Bend Wheel, along with any other pitch modulators
and pitch tables assigned to the instrument, to form a combined modulator. PITCH takes the
amounts of each individual modulation source (as well as any pitch table information
assigned to the instrument) and adds them together, taking the sum total as the modulation
amount. Applied to the filter cutoff frequency for example, this would cause notes to become
brighter as you bend them upwards and more muted as you bend them down (or the opposite
with negative modulation amounts), in addition to the effect of any other filter cutoff
modulators. If a pitch table was employed, the brightness would increase and decrease with
the individual pitch assigned to each note, in addition to the effect of the pitch wheel and any
other modulators. The value of the pitch bend wheel is 0 to 99, normally at the center (50% at
rest).