Zone Parameters
Velocity
5-8 PC88
Velocity
The PC88 can respond to keyboard velocity Ñ how hard you play the keys Ñ in a variety of
ways. Each Zone can have its own velocity response settings, and any change you make in a
Zone affects both local sounds and outgoing MIDI data. Variations in velocity response are
useful if you want to customize the feel of the keyboard, or if you are working with a
synthesizer or patch that responds strangely to velocity, or for special dynamic effects. You can
design a Setup, for example, where certain instruments, perhaps horns or strings, only play
when you strike the keys with a high velocity.
Velocity Scale
Vel Scale lets you amplify or diminish velocity response. Normal response is Ò100%Ó. Higher
values make the keyboard more sensitive (you donÕt need to play as hard to get more sound)
while lower values make it less sensitive (playing harder doesnÕt change the sound as much).
You can also set the scale to a negative number, in which case the velocity response is turned
upside-down: playing harder produces a softer sound and vice versa. See the following section
on Velocity Offset for ideas about negative scaling. A neat thing to try is to set up two Zones
with opposite scale factors so that key velocity acts as a crossfade between the two sounds.
Maximum scale values are +300% and -300%.
The illustration that follows shows what happens when you change Velocity Scale. Note that
Velocity Scale is the only parameter changed in this example; the other parameters are set to
their defaults (offset = 0, curve = linear, min = 1, max = 127).
Velocity Offset
Vel Offset also changes the response, but in a more direct way, by adding or subtracting a
constant to the key velocity. For example, if this is set to 25 (assuming a scale of 100%), then 25
is added to the velocity of every keystroke, making the sound that much louder. The softest
possible keystroke will have a value of 25, while a keystroke with velocity of 102 will produce
the same sound as a note with velocity 127 (102+25=127). Negative values diminish the
response: a setting of -25 means the loudest velocity available will be 102, while any keystroke
25 or below will produce a velocity of 1 (a velocity value of zero has a special meaning in MIDI
Parameter Values
Vel Scale: -300% to 300%
Vel Offset: -127 to 127
Vel Curve: Linear, Sin+, Cos+
Vel Min: 1 to 127
Vel Max: 1 to 127
MIDI Velocity
127
0
127
Strike Velocity
64
64
Velocity Scale: 100%
Velocity Scale: 200%
Velocity Scale: 50%
as you strike the keys harder (increase the
velocity) MIDI velocity increases proportionally
MIDI velocity reaches maximum on
medium strike velocity
MIDI velocity never reaches maximum, even on
maximum strike velocity
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