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The Master Audio Bus Hierarchy

The Master Audio Bus hierarchy is a structure of output busses through which the sound and music in your project are routed. It consists of three different levels of functionality:

  • Master Audio Bus (Master Control Bus in projects from older versions of Wwise) - The top level element in the hierarchy that determines the final output of your audio. While you can move, rename, and delete busses you create, the Master Audio Bus can't be renamed or removed. You can also apply effects to the master audio bus.

  • Audio busses - One or more optional busses that can be grouped under the Master Audio Bus to help in the organization and delivery of your sound mix. These busses can be renamed, moved, and deleted; and, for most platforms, you can also apply effects to them.

  • Auxiliary busses - One or more optional busses that can be grouped under any auxiliary or audio bus. Like audio busses, they can be renamed, moved, copied and deleted; and, for most platforms, you can also apply effects to auxiliary (commonly referred to as "aux") busses. Sound objects anywhere in the project can be sent to auxiliary busses to adjust volume, channel configuration, positioning, and RTPC, as well as to apply effects, states, or mixer plug-ins. Ducking, voice, and HDR mix adjustments are not possible in an auxiliary bus.

[Note] Note

Auxiliary busses cannot have audio busses as children. They can only have other auxiliary busses as children.

The following Wwise interface icons help you easily identify audio busses and auxiliary busses:

Icon

Represents

Audio Bus

Auxiliary Bus

By default, the sounds from the Actor-Mixer Hierarchy are routed through the Master Audio Bus. However, as you build your output structure, you can systematically route objects through the busses that you create.

[Note] Note

You can change the default audio routing for your project in the Default Setting dialog box. For more information about these default settings, refer to Defining your Project Settings.


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