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Match audio regions to the project tempo in Logic Pro for Mac

When the Project Type in File > Project Settings > General is set to “Use musical grid,” the length of imported audio regions is linked to the project tempo. If you add a tempo change at a particular ruler position, the length of regions changes, starting from that position. The playback speed of the imported regions doesn’t change, but all existing MIDI regions that were in sync with audio regions will now be out of sync. Audio regions that are lengthened (by increasing the tempo) may overlap subsequent regions on the same track, with the result that the overlapped parts of the regions aren’t heard. All audio region loop lengths (set with the Loop parameter in the Region inspector) change, resulting in irregular loops and rhythmic conflicts between tracks.

The following audio files can automatically match the project tempo and will follow any tempo changes made in the global Tempo track:

  • Audio recordings made in Logic Pro for Mac (7.0 and later)

    Note: If you drag a file recorded in one project to another project using the Finder, the file doesn’t follow the project tempo. However, files copied between two projects are able to follow the project tempo if the Smart Tempo region parameter isn’t set to Off.

  • Apple Loops

  • Audio regions on tracks for which Flex Time is turned on

  • Audio bounces made in Logic Pro (7.0 and later)

    Note: Bounce files can only follow the project tempo if the Add resulting files to Project Audio Browser option is selected in the Bounce dialog when the file is bounced or exported. As with audio recordings, the bounce conforms to the project tempo if the Smart Tempo region parameter isn’t set to Off.

  • Audio files exported from Logic Pro (7.0 and later)

    Note: Exported files can only follow the project tempo if the Add resulting files to Project Audio Browser option is selected in the Export dialog when the file is bounced or exported. As with audio recordings, the bounce conforms to the project tempo if the Smart Tempo region parameter isn’t set to Off.

Audio files that follow the project tempo (and first key signature) are flagged with the Follow Tempo symbol, in both the Tracks area and the Project Audio Browser.

Figure. Follow Tempo symbol on audio region, and in Project Audio Browser.

All other imported audio files require adjustment of either the region or the project tempo.

You can set an audio region to follow the project tempo, or add the region to the Apple Loop library as an Apple Loop. See Create your own Apple Loops in Logic Pro for Mac.

Make audio recordings follow the project tempo

  • In Logic Pro, select the audio region in the Tracks area, then choose one of the following from the Smart Tempo pop-up menu in the Region inspector: On, On + Align Bars, or On + Align Bars and Beats.

See Choose the Smart Tempo setting for an audio region.

Download the guides:

Logic Pro User Guide: PDF

Logic Pro Instruments: PDF

Logic Pro Effects: PDF

Control Surfaces Support Guide: PDF

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