Apple Logic Pro 9 - Manual (Page 529)

• Crossfade: Adjusts the crossfade length from 0.00, which produces hard artifacts, to
the full grain length of 1.00, which tends to sound softer.
Speed
Speed flex mode time stretches material by playing the source material faster or slower,
including pitch change. Because of the pitch shifting, this flex mode is mainly useful for
percussive material, but it can be used on all material for interesting creative effects.
Getting to Know Transient, Flex, and Tempo Markers
You will encounter some or all of the following marker types when working on flex-enabled
audio regions:
Transient marker Tempo marker Tempo marker
(region end)
Quantize flex marker Flex marker
• Transient markers: Displayed as faded gray lines in the background of an audio region,
transient markers denote significant points in an audio file. Transient markers are
displayed after the audio on a track is analyzed for transients the first time you enable
that track for Flex Time editing. For details, see
Using Transient Markers to Edit in the
Sample Editor .
• Flex markers: Displayed as white lines with orange handles, flex markers allow you to
alter the timing of audio material. By moving a flex marker, you time compress or
expand the area around it, but within the boundaries of the existing transient markers.
For details, see
Working with Flex Markers .
• Quantize flex markers: Displayed as white lines, quantize flex markers—or simply quantize
markers—are created automatically during the audio quantization process. Quantize
markers indicate where audio has been time-stretched during the audio quantization
process. When you edit a quantize marker, it’s converted to a normal flex marker (with
an orange handle). For details, see
Quantizing Audio or MIDI Regions .
529 Chapter 16 Flex Time Editing