Apple Soundtrack Pro 3 - Manual (Page 124)

Tracks, Busses, Submixes, and the Master Bus
Multitrack projects contain tracks, busses, and submixes. Tracks, busses, and submixes
appear as horizontal rows in the Timeline and as vertical channel strips in the Mixer. In
both the Timeline and Mixer, tracks, busses, and submixes are grouped together, with a
separator between each category. You can move each type within its own category but
cannot move it to either of the other categories. Each track, bus, and submix has a header
with its icon, name, and a set of controls. The Master bus represents the final mix that
goes to physical outputs. The Master bus has no icon or editable name.
Tracks
Tracks contain the audio you add to your project in the Timeline. Each track has a color
label, a name, an icon, and a set of controls that appear in the track’s header in the Timeline
and in its channel strip in the Mixer. Track controls include a volume slider, a pan control,
a submix pop-up menu, and buttons to mute or solo the track, bypass effects, and enable
the track for recording. In addition, each channel strip includes level meters you can use
to watch the track’s levels and a set of effects slots where you can add and order track
effects and sends.
Busses
In Soundtrack Pro, a bus is a separate but parallel audio signal created with a send. A send
can tap an audio signal and create a separate signal known as a bus. (Some might call
this an auxiliary bus.) Busses can be processed or combined independently of the main
signal. They can be combined with other signals in a submix or at the final mix, or they
can be routed to altogether separate outputs.
Send
Track
Submix bus
Bus
1
Audio clip Effects Volume fader
Each bus has a color label, a name, an icon, and a set of controls that appear in the bus’s
header in the Timeline and in its channel strip in the Mixer. Bus controls are the same as
track controls, except that a bus does not have an Arm for Recording button (because
you can’t record audio to a bus). The bus controls affect the audio of every track sent
(routed) to that bus.
124 Chapter 5 Working with Multitrack Projects