Audio File Editor Reverse commands
The Reverse command is most commonly used on an entire audio file—to reverse a cymbal sound, for example. It can also be used as a creative option on selected portions of audio files. For example, the reverb tail at the end of a file can be reversed, copied, and pasted to the beginning of the file.
The Invert command is useful for correcting phase cancellation errors, or when several out-of-tune signals (or several signals processed through chorus effects) are to be mixed down to mono.
Tip: You can also use the Invert function to decode mono/stereo recordings, but it’s easier to use the Direction Mixer plug-in for this task. For more information about this plug-in, see Logic Pro Effects Help.
Reverse the selected area of an audio file
Choose Functions > Reverse from the Audio File Editor menu bar (default key command: Control-Shift-R).
Reverse the phase of all selected audio material
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Choose Functions > Invert from the Audio File Editor menu bar (or use the corresponding key command).
All negative amplitude values become positive, and vice versa.
Note: This doesn’t audibly change the file, if heard in isolation.