Edit track parameters in Logic Pro for iPad
Each track has a set of parameters. The parameters available depend on the track type (some parameters are common to all track types, while some are specific to audio tracks or software instrument tracks only). You can view and edit parameters for the selected track in the Track inspector.
All track types have a track name, track color, and track icon, which appear in the General category in the Track inspector. Other track parameters include the following:

All track types have a track name, which is shown at the top of the Track inspector when the track is selected, and a track icon, which appears in the track header. Track parameters for each track type are listed below:
Common track parameters
Name field: Tap to select the current name, then enter a new name for the track.
Color: Tap to open the Colors palette, then tap to choose a new track color.
Icon: Tap to open the Icon menu, then tap to choose a new track icon.
Audio track parameters
Freeze Mode pop-up menu: Choose Source Only to freeze the track signal without effect plug-ins, or choose Pre Fader to freeze the track with all effect plug-ins. See Freeze tracks.
Q-Reference switch: (available only for projects shared from Logic Pro for Mac on audio tracks belonging to a Mixer group with "Editing (Selection)" and "Quantize-Locked (Audio)" turned on). When turned on, all regions on the track contribute their transients as reference points during the quantization process.
Flex switch: Turn Flex on or off for the track.
Flex Mode pop-up menu: Choose the flex mode for the track. See Flex Time algorithms and parameters.
Depending on which flex mode you choose, other parameters become available below the Flex Mode pop-up menu.
Fill Gaps switch: Turns the decay function on or off, allowing you to fill any gaps that occur between sounds as a result of shifting the audio.
Decay value field: Sets the decay time between sounds because no time stretching takes place to compensate for the gaps.
Slice Length value field: Shortens each slice by a percentage value. Shortening slices can be helpful for removing unwanted pre-attack sounds from the following slice, or to create a gated effect.
Software instrument tracks
Default Region Type pop-up menu: Tap, then choose a new default region type.
MIDI Input pop-up menu: Tap, then choose one of the following options:
All: The track uses any available MIDI source as input.
A listed MIDI port or device: The track uses only the selected MIDI port or device as input.
Play Surface: The track uses the selected Play Surface as a MIDI source.
Logic Pro Virtual In: The track receives MIDI messages from another music app on your Mac.
Bluetooth MIDI Devices: Opens the Bluetooth MIDI Devices window so that you can choose a Bluetooth device to use as the MIDI source.
Internal MIDI In pop-up menu: Choose a track with an instrument plug-in to provide internal MIDI input, or choose Off. You can also choose the output of a MIDI effect plug-in, or the output of an instrument plug-in capable of sending MIDI events, when these have been configured to be used as internal MIDI input sources. See Route MIDI internally to software instrument tracks.
Record pop-up menu: Choose whether to record only the Internal MIDI In signal or both MIDI input and Internal MIDI In. (The menu is available when Internal MIDI In is set to anything other than Off.)
MIDI In Channel pop-up menu: Choose a MIDI channel to receive input from only that channel, or choose All to receive input from all MIDI channels.
MIDI Output pop-up menu: Tap, then choose one of the following options (this menu is available when a MIDI track using an external instrument is selected):
Logic Pro Virtual In: The track sends MIDI messages to another music app on your Mac.
Bluetooth MIDI Devices: Opens the Bluetooth MIDI Devices window so that you can connect or pair a Bluetooth device to choose as the MIDI output.
None: No MIDI output is used.
MIDI Out Channel pop-up menu: Choose the MIDI channel for the track output, or choose All to send to all MIDI channels, with each MIDI signal keeping its original channel.
Delay in pop-up menu: Tap, then choose whether the delay value is displayed in ticks or milliseconds. The value changes accordingly. When set to milliseconds, the delay value is independent of the tempo.
Delay value field: Drag the Delay value up or down to edit the value, or tap the value, then edit the value in the numeric input dialog using the Decrement/Increment buttons, the scroll wheel, or the numeric keypad.
Transpose value field: Drag the Transpose value up or down to edit the value in semitones, or tap the value, then edit the value in the numeric input dialog using the Decrement/Increment buttons, the scroll wheel, or the numeric keypad.
Velocity Offset value field: Drag the Velocity Offset value up or down to edit the velocity for all regions on the track, or tap the value, then edit the value in the numeric input dialog using the Decrement/Increment buttons, the scroll wheel, or the numeric keypad.
Key Limit value fields: The left field shows the lower key limit, and the right field shows the upper key limit. Drag the value each field up or down to edit the value, or tap each value, then edit the value in the numeric input dialog using the Decrement/Increment buttons, the scroll wheel, or the numeric keypad.
The two values together define the key range; any notes outside this range are not played.
Freeze Mode pop-up menu: Choose Source Only to freeze the track signal without effect plug-ins, or choose Pre Fader to freeze the track with all effect plug-ins. See Freeze tracks.
No Transpose switch: When turned on, regions on the track are not transposed (the Transpose Region parameter is ignored). This can be useful for instruments assigned to drum or other samples mapped across the keyboard on a single MIDI channel.
No Reset switch: When turned on, no reset messages are sent to the track’s instrument. This can be useful when using controllers for nonmusical purposes, such as Mixer automation.
Edit track parameters in the inspector
In Logic Pro, tap a track’s icon to select the track.
Tap the Inspector button
in the view control bar to open the inspector.
In the inspector, make sure Track is selected in the Level menu.
In the Track inspector, edit parameter values by tapping or dragging. Some parameters have specific controls for editing their values.
When you’re done, tap the Inspector button again to close the Track inspector.
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