Audiokinetic

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Understanding the Voice Pipeline

The following diagrams and tables show how voices are processed, how they are routed, and where the different volumes and Effects are applied. The first diagram illustrates the case when 3D Audio is not active. The second diagram illustrates the case when 3D Audio is active.

When 3D Audio is Not Active
	These busses are configured Same as parent and have no Effects, so their values will be applied to all items routed to them, but they themselves will not mix or do any processing.
	This bus is configured Same as parent and has Effects, so its behavior changes will be based on whether or not 3D Audio is enabled.

When 3D Audio is Active
	These busses are configured Same as parent and have no Effects, so their values will be applied to all items routed to them, but they themselves will not mix or do any processing.
	This bus is configured Same as parent and has Effects, so its behavior changes will be based on whether or not 3D Audio is enabled.
	The Master Bus is Processing Audio Objects, so no mixing will occur on input. Effects will be applied to each object passing through the bus.
	The Audio Objects output by the Master Bus are triaged/mixed here according to their Metadata and what the Sink plug-in supports. By default, Objects with 3D positions will be triaged as System Audio Objects and will not be mixed. Objects without 3D positions will be mixed according to their channel configuration: Mono and Stereo objects will be mixed in the Passthrough Mix, and all other objects will be mixed in the Main Mix. This default behavior can be overridden by adding a Wwise System Output Settings Metadata plug-in somewhere in the bus hierarchy or to individual sources.
	Audio Device Effects are 3D Audio-aware Effects that receive all 3D Audio data (Main Mix, Passthrough Mix, and System Audio Objects) and apply the Effect to all of them in one execution pass.

Gain #	Description - Applicable when 3D Audio is active and not active
	Volumes apply to all channels Voice Volume* (Voice Volume parameters on busses and for auto-ducking are applied at this level) Normalization and Makeup Gain HDR attenuation Occlusion Project Setting "Occlusion Volume curve" API: `SetObjectObstructionAndOcclusion()` API: `SetScalingFactor()` LPF property and Occlusion LPF curve (Project Settings)
	Independent volumes per channel Positioning 2D panning and 3D positioning Center% Distance Attenuation Curve API: `SetGameObjectOutputBusVolume()` API: `SetPosition()` API: `SetMultiplePositions()` API: `SetListenerSpatialization()`
	"Dry Path" Output Bus Volume (+ RTPC) Distance Attenuation Curve "Output Bus Volume" API: `SetGameObjectOutputBusVolume()` API: `AkSpeakerVolumeMatrixCallbackInfo()` Obstruction Project Setting "Obstruction Volume curve" API: `SetObjectObstructionAndOcclusion()` Parent Bus without effects inserted: Volume* Obstruction LPF curve (Project Settings)
	"Wet Path" - Distance Attenuation Curve "Aux Send Volumes" API: `AkSpeakerVolumeMatrixCallbackInfo()` - User-Defined Auxiliary Sends Volumes (+ RTPC) - Game-Defined Auxiliary Sends Volume (+ RTPC) - API: `SetGameObjectAuxSendValues()`
	Bus Volume Positioning 2D panning and 3D positioning Center % Distance Attenuation Curve API: `AkSpeakerVolumeMatrixCallbackInfo()` Parent Bus without Effects inserted: Bus Volume
	Bus Volume Positioning 2D panning and 3D positioning Center % Distance Attenuation Curve Parent Bus without Effects inserted: Bus Volume
	Bus Volume**