# DynamicsCompressorNode WebAudioContext.createDynamicsCompressor()

> __小程序插件__：不支持

## 功能描述

创建一个DynamicsCompressorNode

## 返回值

### DynamicsCompressorNode

## 示例代码

示例代码
```javascript

let audioCtx = wx.createWebAudioContext()
let compressor = audioCtx.createDynamicsCompressor()

compressor.threshold.value = -50
compressor.knee.value = 40
compressor.ratio.value = 12
compressor.attack.value = 0
compressor.release.value = 0.25

```