MIDI Synchronization project settings in Logic Pro for iPad
Destination
Configure the MIDI clock signal that Logic Pro for iPad sends to other MIDI devices.
Port Name column: Lists the MIDI output ports and devices that can receive the MIDI clock signal from Logic Pro.
Network Session 1: This option represents the network connection you create in the Audio MIDI Setup app on a Mac (available on the same network as the iPad) to send MIDI between Logic Pro for Mac and Logic Pro for iPad.
Logic Pro Virtual Out: Send MIDI clock to any app on your iPad that supports this virtual MIDI bus. Third-party iPad music apps might display this option as a selectable MIDI input.
Any MIDI device connected to the iPad is listed. See MIDI In/Out settings.
Clock switch: Activates MIDI clock transmission for the MIDI output port of that row.
MIDI clock can easily be sent with other MIDI messages, such as notes and controllers.
Delay field: This value (ranging from –200 ms to 500 ms) delays the transmission of MIDI clock signals for the MIDI output port of that row. Negative values mean that the MIDI clock signal is transmitted earlier. This allows you to compensate for any reaction delays in external devices receiving MIDI clock.
PDC switch: Activates plug-in delay compensation (PDC) for the MIDI output port of that row. This compensates for delays (latency) that can be introduced when using software plug-ins.
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