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All the examples will be using the bus structure shown below for the Secondary Bus hierarchy. The Main Audio Bus hierarchy is omitted. This structure will be duplicated for each of the outputs so the final mixes are independent. Note that only the required busses will be instantiated.

Figure 30.1. Master Secondary Bus structure

Figure 30.2. Simple example of a sound going to the main output

This is a simple example of one sound going to the main output. In a regular game, many of those sounds will be routed to many sub busses. But for brevity, lets assume there is only one sound playing on the TV output.

Figure 30.3. Simple example of a sound going to the second player's controller output

Let's play another sound, this time on the second player's game controller. This could be a menu sound for example, if that player was in the menu, but not the others. In this case, the sound is mixed normally into it's output bus and independently of the TV mix. The fact that this sound only play on the player's 2 controller is set up through the game with Listeners and Game Objects association. In this case, the programmer would play the sound on a Game Object that is listened only by the Controller 2's Listener.

Figure 30.4. Sound going to player 1, player 2 and TV.

This example illustrates two points: a sound can be routed to multiple secondary outputs and also to the TV mix. In this example, this could be a prerecorded radio call for help from player 1, which would be heard by player 2 because they are on the same team and also on the TV because the TV point of view is close to the player 2 emitting the sound. Note that this sound's Output Bus is set to Bus 1. This bus is duplicated for player 1 and 2, as is the Master Secondary Bus. Clearly, the player 2's mix has to include Sound 2 (which he is the only one to hear) as well as Sound 1. Both copies of the Master Secondary Bus will have the same effects applied (if any), but won't do so on the same audio signal.

You can also notice the Send going from Sound 3 to the TV mix. All types of Sends can be used to send to another output. In this case, since the call may be heard by the "camera" too (depending on distance and attenuation), so it needs to be mixed into the main TV mix and will "enter" that mix from the defined Auxiliary Bus.