Region Automation: Portamento Time – Logic Pro X keyboard command of the day

  Region Automation: Portamento Time

One of the many MIDI messages that can be automated. Creating an automation point adds an event with the control change message. Portamento Time is a required feature of the General MIDI GM2 specification.

From the MIDI specification (1996)

Portamento Control (PTC) is a recent addition, and defines a continuous controller that communicates which note number the subsequent note is gliding from. It is intended for special effects in playing back pre-sequenced material, so that legato with portamento may be realized while in Poly mode.

General MIDI 2 (GM 2)


– Portamento Time (cc#5)



 Control Change Messages (Data Bytes)


5 00000101 05 Portamento Time 0-127 MSB