10.6

967Logic Pro User Guide
• Octaves field: The arpeggio can be repeated over 1 to 10 octaves.
• Crescendo field: The velocity value set here is added every time the arpeggio is
repeated (if the Repeat parameter is on).
• Controller Base field: All ten parameters of the arpeggiator object can be controlled
with MIDI continuous controller events. The Controller Base parameter determines
the controller number for the first parameter (Direction). The other parameters are
controlled by subsequent controller numbers.
When Controller Base is set to Off, MIDI control of the arpeggiator is disabled.
Transformer objects
Transformers in the Logic Pro Environment
You can use a transformer object to select, filter, and alter MIDI events in real time.
Transformers can also process meta events, as long as they aren’t the meta events
that affect transformers. These particular meta events change the transformer, rather
than being processed by it. For more information, see Use Meta events in the Logic Pro
Environment.
Create a new transformer object
• In Logic Pro, choose New > Transformer.
Transformer functions in the Logic Pro Environment
A transformer object checks whether or not an incoming event matches certain conditions.
If it does, then certain operations are carried out.
Events that do not meet the conditions may pass unchanged to the output, or may be
discarded.
The transformer can also make copies of matching events before altering them, and can
split the selected (matching) events from the unselected ones, via its two top cables.
You must place the transformer in the MIDI signal path in order to use it.
Alter the output of an instrument
1. In Logic Pro, cable the instrument output into the transformer (removing the
instrument’s internal port assignment in the process).
2. Choose New > Instrument to create a new instrument, and assign it to the appropriate
MIDI output port.
3. Cable the output of the transformer object into this newly created instrument (which, in
essence, is simply acting as a MIDI output port).