Apple Final Cut Pro 6 - Manual (Page 832)

Chapter 2 Assigning Output Channels and External Audio Monitors 47
I
Downmixing Multiple Audio Channels to a Stereo Mix
Even when you use multiple audio channels during editing and mixing, you may need
to create a stereo mix. Downmixing combines all audio output channels into a single
stereo output. You may want to downmix when:
 Playing back a sequence with multiple output channels on a system with only
two speakers
 Exporting to multiple audio channels. For more information, see “ Exporting Audio
Output Groups to AIFF Files ” on page 190 and “ Exporting Multichannel QuickTime
Files ” on page 195.
How Downmixing to Stereo Works
When a sequence is downmixed, all output busses are mixed together in a downmix
stereo bus and then sent to outputs 1 and 2 on your audio interface. Stereo output
busses are sent to the downmix bus in stereo; mono output busses are centered in the
downmix bus.
2 1
Busses
Hardware
outputs
Tracks 1 and 2
(stereo)
Tracks 3 and 4
(centered)
Three bus groups
downmixed to
two channels
Tracks 5 and 6
(stereo)
Timeline tracks
Audio clip
Audio clip
Audio clip
Audio clip
Audio clip
Audio clip
1
2
3
4
5
6