Specifications
Pro Tools Reference Guide378
Change Duration
The Change Duration command adjusts dura-
tions for selected MIDI notes. Use it to make
melodies and phrases more staccato or legato.
To open the Change Duration window:
■ Choose MIDI > Change Duration.
Set All To Sets all durations to a length specified
in quarter notes and ticks.
Add Adds to the durations by a specified number
of quarter notes and ticks.
Subtract Subtracts from the durations by a spec-
ified number of quarter notes and ticks.
Scale by Shortens or lengthens durations based
on a percentage value (1–400%).
Move Releases to the Closest Attack Shortens
or lengthens durations so that end times are
moved to the closest attack.
Extend Releases to the Next Attack Lengthens
durations so that end times are extended to the
next attack. To limit the duration change, select
either of the Add No More Than options, using
either a percentage value or a number of quarter
note and ticks.
Change Smoothly Allows note lengths to change
smoothly from one duration to another over
time. Duration values are specified in quarter
notes and ticks.
Change Smoothly by Percentage Allows note
lengths to change smoothly from one percent-
age value to another over time.
The curve for this change can be adjusted
(+/– 99) to affect how gradually the change oc-
curs.
Limit Range When selected, restricts the Change
Duration command to a minimum and maxi-
mum range (in quarter notes and ticks).
Randomize When selected, the Change Duration
command is randomized by the specified per-
centage value. For example, using “Set all to”
with a value of 480 ticks, along with a Random-
ize value of 50%, yields durations anywhere be-
tween 360 and 600 (+/– 25% of the duration
value).
Change Duration Examples
To make notes more staccato:
1 Select the range of MIDI notes to be edited.
2 Choose MIDI > Change Duration.
The settings in the Change Duration win-
dow are saved with each session. To store
your favorite settings as the default for use
in future sessions, save them as part of a
session template (see “Creating Custom Ses-
sion Templates” on page 51).
Change Duration window