Apple Soundtrack Pro 3 - Manual (Page 312)

Signal Routing for a Separate Music and Effects Mix in Surround
When you shift from a stereo project to surround, you need to keep in mind some minor
signal routing consequences. This section discusses what changes you would make to
the submix and output settings. (For information about creating a surround version of a
stereo project, see
Converting a Stereo Mix to 5.1 Surround .) First, assuming that the
music and effects are mixed over six surround channels, those submixes must be routed
to the Surround 1-6 output. The Dialogue submix could either remain routed to the Stereo
1,2 output jacks to be added to the Surround 1-6 mix or routed to the center channel at
the submix, or could be panned to the center channel in a surround signal, as shown
below.
1
2
3
4
Tracks
5
6
7
8
Right
Left
Center
Right
surround
Left
surround
LFE
Hardware
outputs
Master
bus
4
3
2
1
6
7
8
5
Master
bus
Audio clip Surround panner
Submix bus
Channels 1–6
Channels 1–6
Music
Channels 1–6
Effects
Dialogue
To create the surround version of the separate music and effects mix (as described earlier),
you route the Dialogue submix to any output channels other than 1-6. This example uses
channels 7 and 8, the last two available output channels, thus isolating the dialogue from
the music and effects.
1
2
3
4
Tracks Submix bus
Channels 7, 8
Dialogue
5
6
7
8
Output
device
Hardware
outputs
Master
bus
4
3
2
1
6
7
8
5
Stereo panner Audio clip Surround panner
Channels 1–6
Music
Channels 1–6
Effects
312 Chapter 12 Basic Mixing in Soundtrack Pro