User guide

Chapter 13 Creating Your Arrangement 333
To time stretch or compress audio regions:
m Option-drag the end of an audio region.
This stretches or compresses the audio by the amount that the region is altered in
length, and replaces the original region with a new PCM audio file (in the original file
format, or AIFF, if the original was not PCM).
Note: The current Snap menu setting has an impact on length changes.
You can make an audio region play at half-speed by stretching it to twice the original
length, or at double-speed by shortening it to half the original length. Great for Darth
Vader or Munchkin impressions.
You can choose the time stretch/compression algorithm used for this function in the
Arrange area’s Audio > Time Machine Algorithm menu. Details on each algorithm are
found in “Using the Time and Pitch Machine” on page 534.
Time Stretching or Compressing Multiple Regions
Modifier keys have an impact on how time stretching or compression works when
multiple regions are selected. The following table outlines all modifier options, and their
impact (or otherwise) when multiple region lengths are changed:
MIDI Region-Specific Length Change Operations
The following functions only apply to MIDI regions.
To round a MIDI region start point to a bar:
m Use the MIDI > Snap Region Start to Bar command (or the corresponding key
command) to round the start point of the selected MIDI region to the nearest bar.
Adjusting the Length of MIDI Regions to Fit Contents
The MIDI > Set Optimal Region Sizes Rounded by Bar command (or the corresponding
key command, default: Control-B) reduces or increases the length of a selected MIDI
region, making it just large enough to contain the events (or regions, if a folder) within
it. The region borders are rounded to the nearest bar.
Hold down Option when using this function to round the region borders to the nearest
denominator value (or use the Set Optimal Region Sizes rounded by denominator key
command).
Modifier Result
None Same absolute length change, no time correction
Shift Same absolute end position, no time correction
Option Same absolute length change, with time correction
Option-Shift Same absolute region length, with time correction
Control Can be used after clicking for finer resolution length changes, but can not be used in
conjunction with Option, no time correction