Apple Logic Pro 8 - Manual (Page 854)

854 Chapter 38 Working With Split Channel Audio File Formats
Importing Split Channel Files
Nothing special needs to be done to import either split or interleaved files into
Logic Pro. What happens when you do import such files is slightly different, depending
on the audio interface hardware in use.
If You Are Using Core Audio Hardware in Logic Pro
When split channel files are imported, they are automatically converted to interleaved
files. If you want to add several split channel files simultaneously, Logic Pro asks
whether all files should be converted at once.
If You Are Using DAE/TDM Hardware in Logic Pro
When split stereo files are imported into Logic Pro, they are used as is. Split surround
files are not supported.
Working With Split Stereo Files
Logic Pro treats audio files with a name that ends in .L or .R as stereo files. This applies
to all file management functions, such as Rename, Create, or Revert to Backup. The
following list outlines how split stereo files are handled in Logic Pro:
 When you select an independent mono file (one side of a split stereo file “pair”) in
the file selector box, both channels are imported. Split stereo regions are indicated
by the stereo symbol: two adjoining circles.
 You can see both files in the Audio Bin. They have the same name—apart from the
channel suffix (L and R). If you rename one channel of a split stereo audio file, the
other channel file is automatically renamed as well. This also applies when renaming
regions associated with the files.
 File edits performed in the Sample Editor apply equally to both files.
 If you use the Add Region command to create a new region, Logic Pro does this for
both audio files.
 Any alteration made to either region is automatically mirrored by the other. This
applies to region start point, end point, and anchor position changes.
 If the region of either file is moved into (or within) the Arrange area, the other region
is also moved.