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# GetShapeEqCompThreshold

> GetShapeEqCompThreshold

# GetShapeEqCompThreshold

获取压缩阈值。

## 语法

```cpp theme={null}
float GetShapeEqCompThreshold(  
         const SHAPE_EQCOMP_CONTEXT* context  
)  
```

### 参数

*context*   \_In\_\
类型：[SHAPE\_EQCOMP\_CONTEXT\*](/reference/audio/shapeeqcompcontext/structs/shape_eqcomp_context)

指向 `SHAPE_EQCOMP_CONTEXT` 对象的指针。

### 返回值

类型：float

压缩阈值。

## 备注

压缩器仅作用于超过特定阈值的信号；低于阈值的信号原样通过。

压缩器根据一个参数改变声音数据，该参数指定输入电平与输出电平的比率。该比率表示当输入信号超过阈值时对其进行衰减的程度。（如果压缩器/扩展器模式设置为 `SHAPE_EQCOMP_EXPAND_MODE_EXPANDER`，则行为相反。扩展器作用于低于特定阈值的信号；高于阈值的信号原样通过。）

有关详细信息，请参阅 [SHAPE 概述](/build/console-features/audio/overviews/shape-overview) 中的 [均衡与压缩](/build/console-features/audio/overviews/shape-overview#ID4ECF)。

## 要求

**头文件：** shapeeqcompcontext.h

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

## 另请参阅

[SetShapeEqCompThreshold](/reference/audio/shapeeqcompcontext/functions/setshapeeqcompthreshold)\
[ShapeEqCompContext](/reference/audio/shapeeqcompcontext/shapeeqcompcontext_members)


## Related topics

- [SetShapeEqCompThreshold](/zh-CN/reference/audio/shapeeqcompcontext/functions/setshapeeqcompthreshold.md)
- [GetShapeEqCompExpandMode](/zh-CN/reference/audio/shapeeqcompcontext/functions/getshapeeqcompexpandmode.md)
- [ShapeEqCompContext](/zh-CN/reference/audio/shapeeqcompcontext/shapeeqcompcontext_members.md)
- [GetShapeEqCompGain](/zh-CN/reference/audio/shapeeqcompcontext/functions/getshapeeqcompgain.md)
- [GetShapeEqCompRatio](/zh-CN/reference/audio/shapeeqcompcontext/functions/getshapeeqcompratio.md)