Arranging : Arranging Clips : Stripping Silence from Clips : Using Strip Silence

Using Strip Silence
To strip silence from an audio selection:
1 Select one or more audio clips.
2 Choose Edit > Strip Silence.
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Press Control+U (Windows) or Command+U (Mac) to open the Strip Silence window.
3 To set the naming scheme for clips created with Strip Silence, click Rename to open the Rename Selected Clips dialog. For details, see Auto-Naming for Strip Silence.
4 In the Strip Silence window, adjust the settings for Strip Threshold and Minimum Strip Duration (Min Strip) until Strip Silence rectangles appear in the selection.
 
For finer resolution on these controls, press Control (Windows) or Command (Mac) while adjusting them.
5 To retain material before and after the new clips, adjust the settings for Clip Start Pad and Clip End Pad.
6 Once the Strip Silence rectangles encompass the audio that you want to keep, press the Strip button.
The material defined as silence is removed from the selection and new clips are created, which also appear in the Clip List.
Strip Silence is nondestructive and does not remove audio data from parent audio files. In addition to the Undo command, you can use the Heal Separation command to restore stripped material.
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Strip Silence works with stereo and multichannel tracks, and keeps their audio clips phase-coherent.
To extract audio from an audio selection using Strip Silence:
1 Make an Edit selection.
2 Choose Edit > Strip Silence.
3 To set the naming scheme for clips created with Strip Silence, click Rename to open the Rename Selected Clips dialog (see Auto-Naming for Strip Silence).
4 In the Strip Silence window, adjust the settings for Strip Threshold and Minimum Strip Duration (Min Strip) until the Strip Silence rectangles appear in the selection.
5 Click the Extract button.
All audio above the designated threshold is deleted and the “silent” portions of the track are left.
To separate clips using Strip Silence:
1 Make an Edit or Timeline selection.
2 Choose Edit > Strip Silence.
3 To set the naming scheme for clips created with Strip Silence, click Rename to open the Rename Selected Clips dialog (see Auto-Naming for Strip Silence).
4 In the Strip Silence window, adjust the settings for Strip Threshold and Minimum Strip Duration (Min Strip) until the Strip Silence rectangles appear in the selection.
5 Click the Separate button.
New clips are created based on the boundaries detected by Strip Silence.