Fission can be used to cut out pieces from an audio file. This is useful for removing commercials from a recording, as well as cutting out any other undesired audio.
Removing audio is quite simple. Click Select to enter Select Mode, then select the audio you wish to remove by clicking the waveform. You can adjust a selection by dragging its edges in or out.
Remove
Once your audio is selected, clicking the Remove button will remove the selection. The audio on either side of the selection will be merged.
Remove & Split
If you wish to create multiple clips after removing audio, use Remove & Split. This will remove the selected audio and replace it with a split point, leaving you with two distinct clips.
Fades
When removing audio, Fission will fade in and out of the cut by 1.0 seconds by default. This prevents cuts from being too jarring when the surrounding audio is merged. The fade setting can be adjusted with the Fade Around Removed Audio preference in the Preferences window, and toggled on or off in the Clip menu (Fade Around Removed Audio).
Run-Through
Let's run through the steps to remove portions of a file.
Step 1) Open your audio file and enter Select mode.
Step 2) Select the audio you wish to remove, by clicking and dragging in the waveform.
Step 3) Once you have the audio selected, click Remove to remove the audio.
Step 4) Save the audio out by clicking Save Audio. You'll get a file or files with just the audio you want!