上述定理应用于复杂背景下的路面检测，结合直方图均衡化算法消除背景噪声；

The method is used to detect actual complex surface, and denoise background noise combined with the histogram equilibrium algorithm.

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近红外光谱不但包含着物质成分信息，而且这些信息完全掩盖在众多复杂背景当中（包括光散射、背景噪声以及背景漂移）。

With NIR spectra, the analytical information is contained in small spectral variations and usually dominated by the features such as light scattering, background noise and baseline drift.

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有时候，电台或电视台上的话语仅为一些背景噪声似的东西，语言学上叫着背景助兴音乐。

Sometimes, spoken language on the radio or TV is just background noise, the linguistic equivalent of muzak .

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And the fact that we're always facing some risk of death recedes into the background in the way that most of us don't hear background noise-- that what jumping out of an airplane does for you is it spikes the risk of death.

我们一直面对的某些死亡的风险,这种情况下变成了背景声音,因为我们大部分人都听不到背景的噪声-,而跳下飞机带给你的,是死亡的风险上升。

耶鲁公开课 - 死亡课程节选