Toggle Low Latency Mode

Turns Low Latency Mode on or off, depending on the current state. You can add the Low Latency Mode control to the control bar.

I hear lots of complaints about latency control and AUX channels. I don’t have any issues with latency control. I suspect that trying to record “through” plugins may be part of the difficulties.

I simply leave it off.

Work with plug-in latencies in Logic Pro — Apple Support

Recorded audio is routed around any latency causing plug-ins in the signal path to ensure that the maximum delay that can occur across the entire signal flow (of the current track’s signal path) remains under the Limit slider value in General Audio preferences.

The sound may change when you turn on Low Latency mode. Depending on the plug-ins in use, the change in sound can be anything from subtle to dramatic. If plug-ins being used do not exceed the total latency limit, there is no audible difference.

General Audio preferences in Logic Pro — Apple Support

Low Latency Mode checkbox and Limit slider: You need to select the Low Latency Mode checkbox in order to turn on Low Latency mode and use the Limit slider. The Limit slider lets you determine a maximum amount of allowable delay that can be caused by plug-ins when Low Latency mode is turned on (by clicking the Low Latency Mode button in the control bar). In Low Latency mode, audio is routed around latency-inducing plug-ins to ensure that all delays (across the entire signal flow of the current track) remain under the Limit slider value. This is useful when you want to play a software instrument with several latency-inducing plug-ins inserted in the channel.

  Toggle Select Regions on Track Selection

Change the state of ‘Select Regions on Track Selection’. When a track is selected you can optionally have all of the regions on the track selected at the same time.

When I first start working on a mix the ‘Select Regions’ mode of track selection is useful. As I get further into the mix, and I have split tracks into multiple regions doing things like ‘Strip Silence’, I find it less useful.

It is very useful to know about option-select and option-shift-select, only found in preferences documentation. If I keep the settings “off” then I can use the option-select method to select both track and regions.

Select regions in the Logic Pro Tracks area — Apple Support

To perform some edits on regions, you must first select the regions. You can select one or multiple regions, select regions on different tracks, and quickly select muted regions, overlapped regions, or regions meeting other criteria. Selected regions appear brighter in the Tracks area than unselected regions.

Editing preferences in Logic Pro — Apple Support

“Select regions on track selection” checkbox: Selecting a track selects all regions on the track lane, or regions within the cycle or autopunch area (if Cycle or Autopunch mode is on). When unselected, selecting a track does not select regions on the track lane. In this case:

• Option-clicking the track header or associated channel strip continues to select the track and all associated regions.
• Option-Shift-clicking adds the selected track’s regions to the current selection.

  Show/Hide Musical Typing…    ⌘K

Shows or hides the Musical Typing window. This window displays the Mac keyboard keys with associated musical typing keys identified. Simple to keep the window open to the side while typing. Makes entry from the computer fairly easy and quick.

Play software instruments in Logic Pro — Apple Support

The Musical Typing window appears, showing the layout of keys used for playing notes and changing controller information.

  Apply Region Tempo to Project Tempo…

Set the project tempo to the tempo of the selected region.

Work in the Logic Pro Smart Tempo Editor — Apple Support

Apply Region Tempo to Project Tempo: Applies the tempo of the selected region to the project tempo. In the Apply Region Tempo to Project Tempo dialog you can select additional options:

• Align downbeat to nearest project downbeat: Aligns the region downbeat to the nearest downbeat in the project, regardless of Project Tempo mode.
• Maintain relative positions of all other regions: When selected, maintains the temporal relationship between regions in the project when applying the region tempo to the project tempo. This can be particularly useful in Adapt mode.