Though the ideal cure for noise is to stop it at its source, this may in many cases be impossible.

虽然消除噪音的理想方法是在其根源处阻止它，但在许多情况下这可能是不可能的。

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The source of this paradox is electronic anti-noise which creates sound waves to cancel out unwanted noise, such as rattles, blare, etc.

这种矛盾的根源是电子抗噪，它会产生声波来抵消不想要的噪音，如响尾音、刺耳的鸣响等。

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We work to identify its cause, get rid of it and tackle the next source of excess noise.

丹茨曼说，“我们设法确认它的来源，排除它，并处理附加噪音的下一来源。”

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Mr. Bahtiarian says the main source of noise pollution is the propeller.

VOA: special.2011.06.29

If intolerance really has to be the spirit of this age, The Economist would like to suggest restrictions on another source of noise pollution: children.

ECONOMIST: When children should be screened and not heard

What was once considered noise pollution could soon become a green source of energy.

FORBES: Written by Bryan Nelson

On televisions, this is achieved via a small set-top box -- a prototype of which approaches the size and noise level of a mini-fridge -- that plugs into the video source and the TV and converts the video in real-time with virtually no latency.

ENGADGET: Switched On: The old adventures of new 3D