User guide

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22 Removing Silent Passages From
Audio Regions
You can use the Strip Silence function to automatically
remove silent passages from audio regions.
The basic premise of the Strip Silence process is simple: all amplitude values below a
threshold value are interpreted as silence, and removed. New regions are created from
the remaining passages.
How You Can Use Strip Silence
Strip Silence is the ideal tool for the following tasks:
Removing Background Noises
The most conventional use for Strip Silence is simulation of the classic noise gate effect.
When used on long recordings with numerous gaps—such as vocals or instrumental
solos—you can obtain better results by setting a low threshold value. Background
noise is removed, without affecting the main signal.
 For short percussive regions (drum loops), you can simulate time compression/
expansion by simply altering the tempo.
 You can even quantize the individual segments in an audio recording.
Creating Segments of Spoken Recordings
You can use Strip Silence to divide long spoken passages into several convenient
segments, like sentences, words, or syllables. For film synchronization or jingles, you
can move or reposition the speech segments by simply dragging them around in the
Arrange area.
Tempo changes allow you to simulate a time compression or expansion effect, as the
syllables automatically move closer together, or further apart.
Creating Segments for Drum Loops
Dividing drum loops into small segments is a good way of perfectly synchronizing
them. As an example, in audio passages where the bass drum and snare are completely
separate, you can often use Strip Silence to isolate each individual beat.