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Logic Pro 9 User Manual - Help Library - Apple

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• Crossfade: Adjusts the crossfade length from 0.00, which produces hard artifacts, to<br />

the full grain length of 1.00, which tends to sound softer.<br />

Speed<br />

Speed flex mode time stretches material by playing the source material faster or slower,<br />

including pitch change. Because of the pitch shifting, this flex mode is mainly useful for<br />

percussive material, but it can be used on all material for interesting creative effects.<br />

Getting to Know Transient, Flex, and Tempo Markers<br />

You will encounter some or all of the following marker types when working on flex-enabled<br />

audio regions:<br />

Flex marker<br />

Transient marker Tempo marker Tempo marker<br />

(region end)<br />

Quantize flex marker<br />

• Transient markers: Displayed as faded gray lines in the background of an audio region,<br />

transient markers denote significant points in an audio file. Transient markers are<br />

displayed after the audio on a track is analyzed for transients the first time you enable<br />

that track for Flex Time editing. For details, see Using Transient Markers to Edit in the<br />

Sample Editor.<br />

• Flex markers: Displayed as white lines with orange handles, flex markers allow you to<br />

alter the timing of audio material. By moving a flex marker, you time compress or<br />

expand the area around it, but within the boundaries of the existing transient markers.<br />

For details, see Working with Flex Markers.<br />

• Quantize flex markers: Displayed as white lines, quantize flex markers—or simply quantize<br />

markers—are created automatically during the audio quantization process. Quantize<br />

markers indicate where audio has been time-stretched during the audio quantization<br />

process. When you edit a quantize marker, it’s converted to a normal flex marker (with<br />

an orange handle). For details, see Quantizing Audio or MIDI Regions.<br />

Chapter 16 Flex Time Editing<br />

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