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For example, if this is set to 25 (assuming a scale of 100%), then 25 is added to the velocity
of every keystroke, usually 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 and cannot be
used for Note Ons).
You can think of Scale as being a proportional change to the velocity, while Offset is a linear
change. The maximum values for Offset are ±127.
Offset and Scale work together. If scaling takes the velocity out of the ballpark — for
example, you want to set it to 300% but that puts all of your notes at maximum velocity —
using a negative offset, say around -60, can make it possible to still play at different volumes,
although your curve will still be a lot steeper than normal. If you use a negative scaling,
then you must use an offset: otherwise all of your velocities will end up as zeroes (well, ones
actually, since a MIDI note-on with velocity zero is interpreted by some modules as a note-
off message). So to get true inverse scaling (that is, minus 100%), you must set an offset of
127 to get the full range of velocities. Setting the offset to 127 and the scale to -100% (which
is the same as the reverse linear curve):
NOTE : That Offset and Scale affect only MIDI velocities; that is,
these parameters don’t change Velocity Tracking in the programs
themselves. Therefore, some programs (such as organ sounds,which
often have low VelTrk values) may respond only subtly to Offset and
Scale, or not at all.
VelCurve
The Velocity Curve parameter lets you taper the velocity response. The default setting is
Linear
, which means that the output velocity changes directly proportionally to the played
velocity.
Expand
produces a curve that is less steep than the linear curve at keystrike velocities below
64, and steeper than the linear curve at keystrike velocities above 64. In other words, when
you’re playing softly, you’ll notice velocity differences less than with a linear curve, while
when you’re playing hard, you’ll notice velocity differences more.
Compress
produces a velocity curve that is the opposite of the expanded curve—that is,
you’ll notice velocity differences more when you’re playing softly than when you’re playing
hard.
Crossfade
is designed to be used in tandem with the Reverse Crossfade curve, enabling you
to perform smooth crossfades between different programs.
