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Logic Pro 9 User Manual - Help Library - Apple

Logic Pro 9 User Manual - Help Library - Apple

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Flex Time Editing 16<br />

Flex Time editing—similar to what is often referred to as elastic audio in other<br />

applications—is a nondestructive form of audio editing in <strong>Logic</strong> <strong>Pro</strong>. It is a process that<br />

allows you to correct a single note or the timing of an entire region, all within the Arrange<br />

window. Flex Time editing greatly simplifies the process required for altering the timing<br />

of audio material. It allows you to compress or expand the time between specified points<br />

in an audio region without the need for more traditional processes like cutting, nudging,<br />

and crossfading. This chapter introduces you to the techniques used for Flex Time editing<br />

as well as the track-based settings that determine how the timing of your audio will be<br />

altered—either by using time compression or expansion algorithms, by manipulating<br />

invisibly sliced segments, or by speeding up or slowing down the material.<br />

You edit the timing of audio material using flex markers. When you move a flex marker,<br />

it time compresses or expands the area around it. The initial boundaries within which<br />

this is done is determined by the transient markers. Transient markers denote significant<br />

points—or transients—in an audio file. The audio on a track is analyzed for transients the<br />

first time you enable that track for Flex Time editing. Any detected transients in the file<br />

are marked with transient markers. You manipulate flex markers either in the Arrange<br />

area’s Flex view, or invisibly using the Flex tool. You can create single or multiple flex<br />

markers in an audio file, allowing you to manipulate the position of single notes or<br />

complete phrases.<br />

This chapter covers the following:<br />

• Turning on Flex View (p. 526)<br />

• Choosing Flex Modes (p. 526)<br />

• Getting to Know the Flex Modes (p. 529)<br />

• Getting to Know Transient, Flex, and Tempo Markers (p. 531)<br />

• Working with Flex Markers (p. 532)<br />

• Time Stretching Using Marquee Selections (p. 538)<br />

• Time Stretching Using Region Borders (p. 539)<br />

• Snapping Flex Markers to Transient Markers (p. 540)<br />

• Splitting Audio Regions at Transient Marker Positions (p. 541)<br />

525

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