Apple Logic Pro 9 - Manual (Page 427)

• Velocity: All notes in the relevant MIDI region are offset by the selected value. Positive
values add to the originally recorded velocity, and negative ones subtract from it,
although naturally it is impossible to go outside the limits defined by the MIDI Standard
(0–127). If you select a velocity offset that exceeds the maximum or minimum possible
value for a particular note, that note will play at the extreme possible range. For example,
a setting of +20 will cause a note with a velocity of 120 to play at 127.
• Dynamics: This parameter also affects the velocity values of notes, but instead of adding
or subtracting a fixed amount, the differences between soft and loud notes (the
dynamics) are increased or decreased. This works in a similar way to a compressor or
expander. Values above 100% expand the dynamics, thereby increasing the difference
between loud and soft, while values below 100% compress the dynamics, reducing
the differences between loud and soft.
The Fixed setting causes all notes to be transmitted at a velocity value of 64. When
used in conjunction with the Velocity parameter (see above), it is possible to set any
fixed velocity value.
• Gate Time: The term gate time stems from the technology used in analog synthesizers,
and refers to the time between pressing and releasing a key. This parameter affects
the absolute note duration or length. This should not be confused with the musical
note value, which normally refers to the amount of time until the next note. The practical
effect is to make the notes in the region more staccato or legato. The parameter range
is related to the original note lengths. Fix produces extreme staccato. Values below
100% shorten the note lengths. Values above 100% lengthen the notes. The “legato”
setting produces a completely legato effect for all notes, no matter what their original
lengths, eliminating all space between notes in the affected region. If this is used on a
folder, all notes in all MIDI regions in the folder are affected.
• Clip Length: The point of this function is to allow you to alter the length of the last
notes in a region directly from the Arrange area, by adjusting the length of the MIDI
region. When turned on, any notes sounding when the region ends are abruptly cut
off. When turned off, notes are played to their normal end point, regardless of where
the region ends.
• Score: The point of this function is mainly to prevent the score display of particular
regions—namely those that only contain MIDI events that can’t be displayed in the
score, such as controller or SysEx data. When turned off, the MIDI region is not displayed
in the score at all.
• Advanced Quantization: Q-Flam: Notes with the same time position (chords) are spread
out by this parameter. Positive values produce an ascending (upward) arpeggio; negative
values a descending (downward) arpeggio. The position of the first note (either the
bottom or top note, assuming all notes start at the same position) in the arpeggio is
unaltered.
427 Chapter 13 Creating Your Arrangement