Apple Final Cut Express 4 User Manual
Page 444
444
Part VI
If a clip contains two mono audio channels:
 In the Timeline, each mono audio item is treated like any other linked item. Clicking
one item selects both items with linked selection on; with linked selection turned off,
you can select one at a time.
 In the Viewer, each mono channel has its own tab, named Mono (a1) and Mono (a2),
Mono (a3) and Mono (a4), and so on, depending on how many channels the clip has.
Levels, pan settings, and filters applied to one mono channel are not applied to
the other.
If a clip contains a stereo pair of audio channels:
 In the Timeline, the pair is treated as a single linked item. Stereo pair items are always
the same length, and they cannot be modified or selected independently. If you
select a stereo pair of audio items in the Timeline, you must select both together,
even if linked selection is turned off.
 In the Viewer, the stereo pair appears in a single tab, called Stereo (a1a2). If multiple
stereo pairs are linked together, the numbers used by each successive stereo pair
increase, for example, Stereo (a3a4), Stereo (a5a6), and so on. The waveforms of both
audio channels are displayed in this one tab, and any levels or effects applied to one
track are automatically applied to the other.
Details on creating or separating stereo pairs are given in Chapter 32, “