> ## 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.

# SHAPE_MIXBUFFER_ATTENUATION

> SHAPE_MIXBUFFER_ATTENUATION

# SHAPE\_MIXBUFFER\_ATTENUATION

配置時套用至混音緩衝區的衰減。

## 語法

```cpp theme={null}
enum SHAPE_MIXBUFFER_ATTENUATION    
{  
    SHAPE_MIXBUFFER_ATTENUATION_0_DB,  
    SHAPE_MIXBUFFER_ATTENUATION_6_DB,  
    SHAPE_MIXBUFFER_ATTENUATION_12_DB,  
    SHAPE_MIXBUFFER_ATTENUATION_18_DB,  
    SHAPE_MIXBUFFER_ATTENUATION_24_DB,  
    SHAPE_MIXBUFFER_ATTENUATION_30_DB,  
    SHAPE_MIXBUFFER_ATTENUATION_36_DB,  
    SHAPE_MIXBUFFER_ATTENUATION_42_DB  
}  
```

## 常數

| 常數 | 描述 |
| - | - |
| SHAPE\_MIXBUFFER\_ATTENUATION\_0\_DB | 無衰減。 |
| SHAPE\_MIXBUFFER\_ATTENUATION\_6\_DB | 6 dB 衰減。 |
| SHAPE\_MIXBUFFER\_ATTENUATION\_12\_DB | 12 dB 衰減。 |
| SHAPE\_MIXBUFFER\_ATTENUATION\_18\_DB | 18 dB 衰減。 |
| SHAPE\_MIXBUFFER\_ATTENUATION\_24\_DB | 24 dB 衰減。 |
| SHAPE\_MIXBUFFER\_ATTENUATION\_30\_DB | 30 dB 衰減。 |
| SHAPE\_MIXBUFFER\_ATTENUATION\_36\_DB | 36 dB 衰減。 |
| SHAPE\_MIXBUFFER\_ATTENUATION\_42\_DB | 42 dB 衰減。 |

## 備註

此列舉由 `SetCommand`、`GetAttenuationText`、`SetProperty` 和 `ConvertAttenuation` 函式使用。如需有關用來指示音訊控制處理器之流程圖的詳細資訊，請參閱 [ACP 概觀](/zh-TW/build/console-features/audio/overviews/acp-overview)。如需有關可調整硬體音訊處理引擎功能的詳細資訊，請參閱 [SHAPE 概觀](/zh-TW/build/console-features/audio/overviews/shape-overview)。

## 需求

**標頭：** shapeflowgraph.h

**支援的平台：** XBOX One 系列主機與 XBOX Series 主機

## 另請參閱

[XAudio2](/zh-TW/build/console-features/audio/overviews/xaudio2-overview)

[shapeflowgraph](/zh-TW/reference/audio/shapeflowgraph/shapeflowgraph_members)


## Related topics

- [SHAPE_MIXBUFFER_ATTENUATION](/reference/audio/shapeflowgraph/enums/shape_mixbuffer_attenuation.md)
- [ShapeFlowGraph](/reference/audio/shapeflowgraph/shapeflowgraph_members.md)
- [SHAPE_FLOWGRAPH_ALLOC_MIXBUFFER_COMMAND](/reference/audio/shapeflowgraph/structs/shape_flowgraph_alloc_mixbuffer_command.md)
- [SetShapeAllocMixBufferCommand](/reference/audio/shapeflowgraph/functions/setshapeallocmixbuffercommand.md)