Some try to isolate radio noise from the "noise" of the universe.

有的试图从宇宙“噪音”中分离出无线电信号。

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What they found, however, was a background hiss of radio noise, reminiscent of the hiss noticed by Dr Penzias and Dr Wilson.

但是，他们却发现了射电噪声的一种背景杂音，这让人联想到彭齐亚斯博士和威尔逊博士当时注意到的嘶声。

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The authors of this paper has put forward a new measurement method to study propagation characteristics of radio noise caused by electrified railways.

提出了一种新的研究电气化铁道无线电干扰电波传播规律的测量方法。

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FM radio provided better sound reproduction and less noise or interference than traditional AM radio.

VOA: special.2010.01.31

You should hear a clicking noise on the radio.

VOA: special.2010.12.08

The team analyzed data on loudness, pitch and timbre from just under half a million tracks spanning 55 years, finding the average volume of recordings has increased in that time -- said to be the doing of record labels so songs stand out amongst other radio noise.

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The copper wires are also subject to noise from AM radio broadcasts and electrical motors, say, in washing machines operating near the wires.

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An old tape cassette radio provides audio entertainment, mostly a strange marriage of white noise and American pop.

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