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• 句法
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

createIIRFilter() 方法在 BaseAudioContext interface creates an IIRFilterNode , which represents a general infinite impulse response (IIR) filter which can be configured to serve as various types of filter.

句法

var iirFilter = AudioContext.createIIRFilter(feedforward, feedback);
					

参数

feedforward

An array of floating-point values specifying the feedforward (numerator) coefficients for the transfer function of the IIR filter. The maximum length of this array is 20, and at least one value must be nonzero.

feedback

An array of floating-point values specifying the feedback (denominator) coefficients for the transfer function of the IIR filter. This array may have up to 20 members, the first of which must not be zero.

返回值

IIRFilterNode implementing the filter with the specified feedback and feedforward coefficient arrays.

异常

InvalidStateError

All of the feedforward coefficients are 0, and/or the first feedback coefficient is 0.

NotSupportedError

One or both of the input arrays exceeds 20 members.

规范

规范	状态	注释
Web 音频 API The definition of 'createIIRFilter()' 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
createIIRFilter	Chrome 49	Edge ≤18	Firefox 53 注意事项 53 注意事项 Originally implemented on AudioContext in Firefox 50.	IE 不支持 No	Opera Yes	Safari 不支持 No	WebView Android 49	Chrome Android 49	Firefox Android 53 注意事项 53 注意事项 Originally implemented on AudioContext in Firefox Android 50.	Opera Android Yes	Safari iOS 不支持 No	Samsung Internet Android 5.0

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
• IIRFilterNode
• AudioNode

元数据

• 最后修改： Dec 6, 2019

相关话题

1. Web 音频 API
2. BaseAudioContext
3. 特性

   1. audioWorklet
   2. currentTime
   3. destination
   4. listener
   5. sampleRate
   6. state
4. 方法

   1. createAnalyser()
   2. createBiquadFilter()
   3. createBuffer()
   4. createBufferSource()
   5. createChannelMerger()
   6. createChannelSplitter()
   7. createConstantSource()
   8. createConvolver()
   9. createDelay()
   10. createDynamicsCompressor()
   11. createGain()
   12. createIIRFilter()
   13. createOscillator()
   14. createPanner()
   15. createPeriodicWave()
   16. createScriptProcessor()
   17. createStereoPanner()
   18. createWaveShaper()
   19. decodeAudioData()
5. 继承：

   1. 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. BiquadFilterNode
   18. ChannelMergerNode
   19. ChannelSplitterNode
   20. ConstantSourceNode
   21. ConvolverNode
   22. DelayNode
   23. DynamicsCompressorNode
   24. GainNode
   25. IIRFilterNode
   26. MediaElementAudioSourceNode
   27. MediaStreamAudioDestinationNode
   28. MediaStreamAudioSourceNode
   29. OfflineAudioCompletionEvent
   30. OfflineAudioContext
   31. OscillatorNode
   32. PannerNode
   33. PeriodicWave
   34. StereoPannerNode
   35. WaveShaperNode