> ## Documentation Index
> Fetch the complete documentation index at: https://devdocs.xbox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Audio API reference

> Audio API reference for the Microsoft Game Development Kit (GDK), covering AcpHal, APU, AudioStateMonitor, XAudio2, XDSP, and related audio subsystems.

# Audio API reference

Audio API reference material for the Microsoft Game Development Kit (GDK).

## In this section

[AcpHal](/reference/audio/acphal/acphal_members)\
AcpHal APIs

[Audio Processing Unit](/reference/audio/apu/apu_members)\
APU (Audio Processing Unit)

[AudioStateMonitor](/reference/audio/audiostatemonitor/audiostatemonitor_members)\
Reference material for AudioStateMonitor APIs.

[ShapeContexts](/reference/audio/shapecontexts/shapecontexts_members)\
ShapeContexts APIs

[ShapeDmaContext](/reference/audio/shapedmacontext/shapedmacontext_members)\
ShapeDmaContext

[ShapeEqCompContext](/reference/audio/shapeeqcompcontext/shapeeqcompcontext_members)\
ShapeEqCompContext

[ShapeFiltVolContext](/reference/audio/shapefiltvolcontext/shapefiltvolcontext_members)\
ShapeFiltVolContext

[ShapeFlowGraph](/reference/audio/shapeflowgraph/shapeflowgraph_members)\
ShapeFlowGraph APIs

[ShapePcmContext](/reference/audio/shapepcmcontext/shapepcmcontext_members)\
ShapePcmContext APIs

[ShapeSrcContext](/reference/audio/shapesrccontext/shapesrccontext_members)\
ShapeSrcContext

[ShapeXmaContext](/reference/audio/shapexmacontext/shapexmacontext_members)\
ShapeXMAContext APIs

[XAPU](/reference/audio/xapu/xapu_members)\
XAPU APIs

[XDSP](/reference/audio/xdspaudio/xdspaudio_members)\
XDSP API

[XMA2Defs](/reference/audio/xma2defs/xma2defs_members)\
XMA2Defs APIs

[XAudio2 Helper APIs](/reference/audio/atoc-xaudio2helperapis-reference)\
Reference material for XAudio2 Helper APIs.

## See also

[Audio](/build/console-features/audio/gc-audio-toc)


## Related topics

- [Audio](/build/console-features/audio/gc-audio-toc.md)
- [XDSP audio](/reference/audio/xdspaudio/xdspaudio_members.md)
- [AudioStateMonitor](/reference/audio/audiostatemonitor/audiostatemonitor_members.md)
- [APU (Audio Processing Unit)](/reference/audio/apu/apu_members.md)
- [Overview of audio](/build/console-features/audio/overviews/audio.md)