MIDI : MIDI Editing : Real-Time Properties Settings : Duration

Duration
Duration can be used to increase or decrease the duration of MIDI notes by a fixed amount or by a percentage. This is useful for creating legato or staccato passages.
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Duration cannot be applied as a Real-Time Property to MIDI Input and Thru.
Duration Mode Pop-Up Menu
Select one of the following options from the Duration Mode pop-up menu: Set, Add, Subtract, Scale, Legato/Gap, or Legato/Overlap.
 
Set
Select to set notes to the specified duration.
Add
Select to add the specified duration to the current duration of each note.
Subtract
Select to subtract the specified duration from the current duration of each note.
Scale
Select to scale the current duration of each note by a percentage from 1 to 400%.
Legato/Gap
Select to extend each note to the following note. The specified duration is the subtracted to create a consistent gap between notes.
Legato/Overlap
Select to extend each note to the following note. The specified duration is then added to create a consistent amount of overlap.
Duration Amount
If the Ticks/Notes pop-up menu is set to ticks, enter a duration as a number of quarter notes plus a number of ticks, such as 4|000. If the Ticks/Notes pop-up menu is set to a note size, enter a number to by which to multiply that note size, such as seven 16th notes.
Ticks/Notes Pop-Up Menu
The Ticks/Notes pop-up menu lets you select either Ticks or a note size for Note Durations. There is also a Ticks/Notes pop-up menu for the Minimum and Maximum Durations options.
 
Minimum and Maximum Durations
Enable either or both minimum and maximum durations and enter a value in quarter notes plus ticks or as a multiple of a note size. The Minimum (Min) and Maximum (Max) Durations options are only available in the expanded Real-Time Properties window.