Apple Soundtrack Pro 2 - Manual (Page 263)

Chapter 8 Basic Mixing in Soundtrack Pro 263
Structuring an Audio Post-Production Project
To organize their projects, most video and motion picture sound editors combine the
signals of related tracks and busses into submixes (also known as stem mixes). Then they
combine these submixes to build a final mix. Soundtrack Pro is designed with this
workflow in mind.
What Is a Submix and How Do You Use It?
In Soundtrack Pro, you use a submix to combine (or “sum”) the audio from different
tracks and busses, and route the audio to physical outputs. The name of this feature
implies its purpose—to mix the audio signals of a subset of the tracks and busses in
your project. If you are using external audio hardware that supports multiple physical
outputs, you can have multiple submixes in your project and then choose the physical
output to which each submix routes its audio. By default, all tracks are routed to
Submix 1, and Submix 1 is routed to the Stereo 1, 2 outputs. You can easily add more
submixes, reroute audio, and change the hardware output setting using the Output
pop-up menu in each submix.
Basic Signal Routing in Soundtrack Pro
At a minimum, any audio that you edit in the Soundtrack Pro Timeline passes through
the following “mixer objects” on its way out to the physical audio outputs: a track, a
submix, and the Master bus.
1
Master bus
Hardware
output
Submix bus Track
Audio clip
Effects
Volume fader