10.6

186Logic Pro Effects
Logic Pro Arpeggiator MIDI plug-in Grid mode
The grid consists of 16 steps. Each step controls the step velocity as well as its length,
rest, tie, and chord status. In addition, a cycle length can be set. The current grid pattern
is automatically saved with the project or concert. You can also save and load your own or
factory grid patterns. The Arpeggiator plug-in assigns incremental position identification
numbers to each note in the order they were received, regardless of the initially selected
note order preset. These position identification numbers are used to “lock” an event, such
as a note, a rest, or a tie to a particular step.
Grid mode parameters
• Step on/off buttons: Turn each of the 16 available steps on or off.
• If a step is turned on: An arpeggiator note is played at the respective grid position.
• If a step is turned off: The grid position is silent and is perceived as a rest.
Note: To ensure the integrity of the arpeggio, the note that would have been played—
if the step had been active—is moved to the next active grid position.
• Velocity/length bars: Drag vertically to set the velocity for each active step. Drag left to
reduce step length. Drag right to increase step length or to create a tie to the next step.
• Where multiple velocity/length bars exist, click above them to draw in the velocity of
several steps.
• Drag a velocity/length bar toward the left to reduce the step length. Dragging to
the right increases the step length. This enables you to create different arpeggiator
grooves. Dragging snaps to fixed positions at 25%, 50%, 75%, or 100% of the
step length. Hold down Shift, then drag to set the step length freely. Changes
are reflected immediately in the Grid display by a shaded bar that indicates the
step length.
• Drag a velocity/length bar toward the right until it overlaps the next step to create
a tie to that step. If the step to the right is a rest (an inactive step), this step is
automatically turned on to create the tie. A step can be tied to multiple steps in a
row. The original velocity values of tied steps are replaced by the velocity of the first
step they are tied to, indicated graphically by the velocity bar extending over all tied
steps. Changes are reflected immediately in the Grid display by a shaded bar that
indicates the tie length.
Note: Within an arpeggio, ties are perceived as a rhythmic element rather than a
melodic variation. As a consequence, the tied note may change if notes are added
after the tie has been entered, or if you choose a different note order preset.