Steinberg HALION4 Mode D'emploi page 160

The Audio Bus Architecture
AUX Busses
You need an AUX bus to route individual audio signals from zones or audio busses to
AUX effects. HALion provides four of these AUX busses. To set up an AUX effect,
load an insert effect into one of the effect slots of the AUX bus. To hear the effect,
raise the send level of a zone, route the output of a zone or your audio bus to the AUX
bus, or set up a send in the effect rack of your audio bus.
The send levels control the amount of the effect that is loaded into the AUX bus. You
can set up sends for each zone and audio bus separately.
By default, the output of an AUX bus is routed to the master output bus, but you can
reassign its output to other output busses.
Zones
By definition, the outputs of zones are routed to the first audio bus of the next higher
layer or the program. You can reassign the outputs of the zones to any master output.
Layers
To save processing power, audio busses for layers are optional. You can create them
at any time in the Program Tree. By default, audio busses of layers route to the first
audio bus of the next higher layer or the program. You can reassign the outputs of the
audio busses of the layers to any master output.
Programs
By default, the audio busses of programs are routed to the audio bus of the slot
holding the program. You can create additional audio busses, for example to create
more individual outputs. You can reassign the outputs of the audio busses of the
program to any master output.
Slots
A slot outputs its audio busses directly to the master outputs of the plug-in. Each slot
has one audio bus. You can reassign the outputs of the audio busses of the slots to
any plug-in output bus.
Editing Audio Busses
Creating Audio Busses
To create an audio bus and a corresponding Mixer channel, proceed as follows:
1. In the Program Tree, select the program or layer to which you want to add a bus.
2. Click the "Create New Bus" icon on the toolbar.
Changing the Output Assignment of an Audio Bus
To change the output assignment of an audio bus, open the Mixer and click "Show
Depending Bus Channels". In the Program Tree, select a layer, program, or slot with
one or more audio busses. All relevant channels are shown in the Mixer. Additional
audio busses are displayed at the right of the first audio bus. In the Mixer, click on the
output of the audio bus that you want to edit and select an output from the pop-up
menu.
The output busses of the plug-in can be activated in the host sequencer or the
Preferences dialog of the standalone version.
Changing the Output Assignment of an AUX Bus
1. In the Mixer, click the "Show AUX busses" button on the toolbar.
2. Click on the output selector of the AUX bus you want to edit and select an output
bus from the pop-up menu.
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Mixing and Routing