User`s guide

Pro Tools Reference Guide220
Limit To
When selected, restricts the
Change Velocity command to a minimum
and maximum range.
Randomize When selected, the Change Ve-
locity command is randomized by the
specified percentage value. For instance,
using “Set all to” with a value of 64, along
with a Randomize value of 50%, yields ve-
locities anywhere between 48 and 80
(+/– 25% of the velocity value).
Velocity Ranges
The valid range for MIDI note velocities is
1–127. The Change Velocity command will
never result in moving velocities outside
this range; 1 will always be the lowest and
127 will always be the highest. This means
that you may reach a state where the
Change Velocity command has no effect
on a particular note.
For instance, if a note with a velocity 64 is
scaled by 200%, the new velocity would be
127. Attempting to scale or increase the ve-
locity any further would yield no change.
Fading Velocities
An interesting musical effect is when veloc-
ities get gradually louder or softer over
time. This can be used to make notes fade
in or out, or to provide timbrel variations
in the way that a MIDI instrument sounds.
To change velocities smoothly over time:
1 Select the range of MIDI notes to be ed-
ited.
2 Choose MIDI > Change Velocity.
3 Select the Change Smoothly option with
the range set from 127 to 0.
4 Click Apply.
To preserve (somewhat) the existing veloc-
ity relationships and still achieve velocity
fades, use the option for Change Smoothly
by Percentage. Figure 16 illustrates the dif-
ference between the two Change Smoothly
options.
Scaling Velocities
Many times existing note velocities will
have the desired relationship between each
other, but will either be too soft or too loud
as a whole. In these instances, use the Scale
By option.
For instance, to make velocities 20% louder:
1 Select the range of MIDI notes to be ed-
ited.
2 Choose MIDI > Change Velocity.
3 Select the Scale By option with the per-
centage value set to 120.
4 Click Apply.
Figure 16. Change Smoothly/by Percentage
Original velocities
After Change Smoothly by Percentage, 100% to 20%
After Change Smoothly, from velocity of 100 to 10