从声音流中过滤持续的噪音
看完国际足联世界杯的第一场比赛后，我对呜呜祖拉的声音感到非常恼火。一个关于从声音流中过滤噪音的理论问题出现了。
需要什么算法来消除这种“恒定”的噪音？是否可以保持其他背景声音的质量？
After watching the first game of the FIFA worldcup I was very annoyed by the sound of the Vuvuzelas. A theoretical question came up about filtering that noise out of the sound stream.
What algorithms are needed to remove such a "constant" noise and is it possible to keep the quality of other background sounds?
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好吧，如果您只有一个现场辅助麦克风/主要拾取呜呜祖拉声（即降噪耳机的工作原理），您可以非常轻松地做到这一点。或者，您可以从样本中识别呜呜祖拉的频率特征，您可以循环并用相消干扰来抵消它。当然，它不会像现场版本那么有效。
Well, you could do it very easily if you had a live secondary microphone only/mostly picking up the vuvuzelas (i.e. how noise-canceling headphones work). Or, you could identify the frequency signature of the vuvuzelas from a sample, you could loop and counter that with destructive interference. It would not be as effective as the live version, of course.