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• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

reduction 只读特性在 DynamicsCompressorNode interface is a float representing the amount of gain reduction currently applied by the compressor to the signal.

Intended for metering purposes, it returns a value in dB, or 0 (no gain reduction) if no signal is fed into the DynamicsCompressorNode . The range of this value is between -20 and 0 (in dB).

句法

var myReduction = compressorNodeInstance.reduction;
					

值

A float.

范例

var audioCtx = new AudioContext();
var compressor = audioCtx.createDynamicsCompressor();
var myReduction = compressor.reduction;
					

规范

规范	状态	注释
Web 音频 API The definition of 'reduction' in that specification.	工作草案

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
reduction	Chrome 14 注意事项 14 注意事项 Before version 52, this was an AudioParam. .	Edge 12	Firefox 25	IE 不支持 No	Opera 15	Safari 6	WebView Android Yes 注意事项 Yes 注意事项 Before version 52, this was an AudioParam. .	Chrome Android 18 注意事项 18 注意事项 Before version 52, this was an AudioParam. .	Firefox Android 26	Opera Android 14	Safari iOS Yes	Samsung Internet Android 1.0 注意事项 1.0 注意事项 Before Samsung Internet 6.0, this was an AudioParam. .

图例

完整支持

完整支持

不支持

不支持

见实现注意事项。

另请参阅

• 使用 Web 音频 API

元数据

• 最后修改： 2020 年 1 月 22 日

相关话题

1. Web 音频 API
2. DynamicsCompressorNode
3. 构造函数

   1. DynamicsCompressorNode()
4. 特性

   1. attack
   2. knee
   3. ratio
   4. reduction
   5. release
   6. threshold
5. 继承：

   1. AudioNode
   2. EventTarget
6. Related pages for Web Audio API

   1. AnalyserNode
   2. AudioBuffer
   3. AudioBufferSourceNode
   4. AudioContext
   5. AudioContextOptions
   6. AudioDestinationNode
   7. AudioListener
   8. AudioNode
   9. AudioNodeOptions
   10. AudioParam
   11. AudioProcessingEvent
   12. AudioScheduledSourceNode
   13. AudioWorklet
   14. AudioWorkletGlobalScope
   15. AudioWorkletNode
   16. AudioWorkletProcessor
   17. BaseAudioContext
   18. BiquadFilterNode
   19. ChannelMergerNode
   20. ChannelSplitterNode
   21. ConstantSourceNode
   22. ConvolverNode
   23. DelayNode
   24. GainNode
   25. IIRFilterNode
   26. MediaElementAudioSourceNode
   27. MediaStreamAudioDestinationNode
   28. MediaStreamAudioSourceNode
   29. OfflineAudioCompletionEvent
   30. OfflineAudioContext
   31. OscillatorNode
   32. PannerNode
   33. PeriodicWave
   34. StereoPannerNode
   35. WaveShaperNode