Apple Logic Express 9 - Manual (Page 604)

Automatic Anchor Creation
When you create new regions with Strip Silence, a separate anchor—based on the division
value set in the Transport (1/16, 1/8, and so on)—is automatically created for each new
region.
These rounded anchor values are shown in the help tag when you move any of the newly
created regions, rather than an absolute anchor point that is placed at a particular sample
position.
If you require this sort of precision, open the regions in the Sample Editor, and adjust the
anchor point manually.
Understanding How You Can Use Strip Silence
Strip Silence is the ideal tool for the following tasks:
• Using Strip Silence to Remove Background Noises
• Using Strip Silence to Create Segments of Spoken Recordings
• Using Strip Silence to Create Segments for Drum Loops
• Using Strip Silence to Optimize Synchronization
• Using Strip Silence to Optimize Files and Regions
• Using Strip Silence to Extract Audio Files from a Disc
Using Strip Silence to Remove 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.
Using Strip Silence to Create 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 farther apart.
604 Chapter 19 Removing Silent Passages from Audio Regions