Understanding the Voice Pipeline

The following table and diagram shows how voices are being processed, how they are being routed, and where the different volumes and Effects are being applied.

#	Description
1	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)
2	Independent volumes per channel Positioning 2D panning and 3D positioning Center% Distance Attenuation Curve API: `SetGameObjectOutputBusVolume()` API: `SetPosition()` API: `SetMultiplePositions()` API: `SetListenerSpatialization()`
3	"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)
4	"Wet Path" 4a - Distance Attenuation Curve "Aux Send Volumes" API: `AkSpeakerVolumeMatrixCallbackInfo()` 4b - User-Defined Auxiliary Sends Volumes (+ RTPC) 4c - Game-Defined Auxiliary Sends Volume (+ RTPC) 4d - API: `SetGameObjectAuxSendValues()`
5	Bus Volume Positioning 2D panning and 3D positioning Center % Distance Attenuation Curve API: `AkSpeakerVolumeMatrixCallbackInfo()` Parent Bus without Effects inserted: Bus Volume
6	Bus Volume Positioning 2D panning and 3D positioning Center % Distance Attenuation Curve Parent Bus without Effects inserted: Bus Volume
7	Bus Volume**

* Voice Volume = Slider + RTPC + State + Set Voice Volume action

** Bus Volume = Slider + RTPC + State + Set Bus Volume action

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Understanding the Voice Pipeline

Understanding the Voice Pipeline

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