Logic Pro X keyboard command of the day. #LogicProX @StudioIntern1

  Backup File(s)    ⌃B

In the Audio File Editor. Audio files are large and not so easy to make into discrete chunks. Making a backup copy before altering the audio is a very good idea.

The typical “hard” change that I will make to an audio file is to reduce the gain when the maximum gain is 0.0. Logic does not work well with “normalized” audio tracks with regard to adjusting gain in a non-destructive manner (region gain).

This command is contained in a “local” menu, so some sort of editor or list window. It’s found in the

Project Audio Browser

Select an audio file at the “top” level. Choose “Backup File(s)”. A copy of the file is created in the same location as the original. A file named

 12-8 Acoustic Strum 01.caf

is duplicated as

 12-8 Acoustic Strum 01.caf dup

The duplicated files do not show up in the browser list. If your project is a “bundle” you have to hunt down the project and dive in via the Finder.

I’m not sure about this yet.

The same function, different command name (‘Create Backup’) exists in the Audio File Editor. A backup file gets created with the same trailing ‘dup’. There is a ‘Revert to Backup’ command that will (probably) replace the current audio file with the singular backup file. Apparently only one backup can be created in this manner.

I guess it’s probably a good idea to create a simple backup before doing any kind of processing on the file itself. It is destructive editing, so….

Perform manual backups — Logic Pro X

Although the Undo History and standard Undo functions are available, try to get in the habit of creating backups before processing or editing. This provides a safety copy of your audio recordings in case something unexpected happens, due to a processing error or other unforeseen event.

⇧ SHIFT – ⌃ CONTROL – ⌥ OPTION – ⌘ COMMAND

Logic Pro X keyboard command of the day. #LogicProX @StudioIntern1

  Change Gain…   ⌃G

You can adjust the gain of the audio file, destructively. I use this command whenever I get an audio file that has a maximum gain of 0.0 dB — Logic can’t (or won’t) manipulate this audio in a non-destructive fashion, so I reduce it by .1 dB.

The key command is shared with “Normalize Region Gain” which I use all the time to adjust tracks to have peak values of -9 to -6 dB. The only time this would be counter-productive is when I get multi-tracks of a live performance. In these cases the peaks are performance coordinated. Use the Gain plugin across every track to lower the gain of everything equally — turn down the recording.

⇧ SHIFT – ⌃ CONTROL – ⌥ OPTION – ⌘ COMMAND

Logic Pro X keyboard command of the day. #LogicProX @StudioIntern1

  Remove DC Offset    ⌃D

I don’t recall ever seeing an audio file with DC on it, but I know how to remove it. Removing DC offset will present a dialog box indicating how much offset is found, and requiring you to confirm removal. In my case all I ever see is 0.00%, so I cancel.

Play audio files in the Audio File Editor — Logic Pro X

Some audio interface hardware can layer direct current (DC) over the audio signal. This results in a vertical shift of the waveform position that can be clearly seen in the Audio File Editor. It can also cause crackling sounds at the start and end of the audio region during playback. Choose Functions > Remove DC Offset to center the waveform around the zero amplitude line.

⇧ SHIFT – ⌃ CONTROL – ⌥ OPTION – ⌘ COMMAND