
Intro to the Audio Editor in GarageBand on Mac
The Audio Editor shows a close-up view of part of an audio track, displaying the audio waveform of the track’s regions in a time grid.

In the Audio Editor, you can move and trim audio regions, split and join them, and edit them in other ways. You can scroll and zoom the Audio Editor, and zoom the amplitude of the waveforms in audio regions. Edits you make in the Audio Editor are non-destructive, so you can always return to your original recordings.
You can also correct the pitch of audio material in the Audio Editor. For more information, see Correct the pitch of all regions on an audio track in GarageBand on Mac. Using Flex Time, you can edit the timing of audio material in the Audio Editor. For more information, see Edit the note and beat timing in GarageBand on Mac.
When the track is selected (and no individual region is selected), the following controls appear in the Audio Editor inspector:
Pitch Correction slider: Determines the amount of pitch correction applied to regions in the track.
Limit to Key tickbox: Limits pitch correction to notes in the project key.
Enable Flex tickbox: Turns on flex editing for the track.
When one or more regions are selected, the following controls appear in the Audio Editor inspector to the left of the waveform:
Region Name field: Edit the name of the selected regions.
Reverse Playback tickbox: Play the audio region backwards.
Time Quantise pop-up menu (with Strength slider): Quantise the timing of notes, beats and other events in the selected regions.
Transpose slider: Change the pitch of notes in the selected regions.
Follow Tempo and Pitch tickbox: Sets whether the regions match the project tempo and key.