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# GetShapeFiltVolQ

> GetShapeFiltVolQ

# GetShapeFiltVolQ

获取 Q(品质)因子。

## 语法

```cpp theme={null}
float GetShapeFiltVolQ(  
         const SHAPE_FILTVOL_CONTEXT* context  
)  
```

### 参数

*context*   \_In\_\
类型:[SHAPE\_FILTVOL\_CONTEXT](https://docs.xbox.com/zh-CN/reference/audio/shapefiltvolcontext/structs/shape_filtvol_context.md)\*

指向 [SHAPE\_FILTVOL\_CONTEXT](https://docs.xbox.com/zh-CN/reference/audio/shapefiltvolcontext/structs/shape_filtvol_context.md) 对象的指针。

### 返回值

类型:float

Q 因子。

## 注解

滤波器/音量(FLTVOL)模块实现为 Chamberlin 滤波器。Q 值越大,滤波器的带宽越窄。若要更改 Q 值,请使用 [SetShapeFiltVolQ](https://docs.xbox.com/zh-CN/reference/audio/shapefiltvolcontext/functions/setshapefiltvolq.md)。

其滤波行为设计上与 XAudio2 中的完全一致。

有关详细信息,请参阅 [SHAPE 概述](https://docs.xbox.com/zh-CN/build/console-features/audio/overviews/shape-overview.md) 的 [滤波器/音量模块 (FLTVOL)](https://docs.xbox.com/zh-CN/build/console-features/audio/overviews/shape-overview.md#ID4EBH) 部分。

## 要求

**头文件:** shapefiltvolcontext.h

**支持的平台:** XBOX One 系列主机和 XBOX Series 主机

## 另请参阅

[GetShapeFiltVolQTarget](https://docs.xbox.com/zh-CN/reference/audio/shapefiltvolcontext/functions/getshapefiltvolqtarget.md)\
[ShapeFiltVolContext](https://docs.xbox.com/zh-CN/reference/audio/shapefiltvolcontext/shapefiltvolcontext_members.md)


## Related topics

- [GetShapeFiltVolQTarget](https://docs.xbox.com/zh-CN/reference/audio/shapefiltvolcontext/functions/getshapefiltvolqtarget.md)
- [SetShapeFiltVolQ](https://docs.xbox.com/zh-CN/reference/audio/shapefiltvolcontext/functions/setshapefiltvolq.md)
- [ShapeFiltVolContext](https://docs.xbox.com/zh-CN/reference/audio/shapefiltvolcontext/shapefiltvolcontext_members.md)
- [GetShapeFiltVolMode](https://docs.xbox.com/zh-CN/reference/audio/shapefiltvolcontext/functions/getshapefiltvolmode.md)
- [GetShapeFiltVolTimestamp](https://docs.xbox.com/zh-CN/reference/audio/shapefiltvolcontext/functions/getshapefiltvoltimestamp.md)