A new fringe-pattern preprocessing based on median spin filter is proposed to deal with the interferogram with high-level noise.

提出了一种基于旋滤波法的干涉条纹预处理方法，并将其应用到载波傅里叶分析法中。

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According to a Cornell University study, even low-level noise in open-style offices can result in higher levels of stress and lower task motivation.

据康奈尔大学研究表明，在开放式的办公室中即使是非常低的噪音也使得员工们的工作压力变大，完成工作的动机降低。

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The resulting limit, given in units of bits per second, is the absolute maximum rate of error-free communication given signal strength and noise level.

在给定信号强度和噪声水平的情况下，以比特每秒为单位给出的最终限制是无差错通信的最大绝对速率。

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Cause noise pollution: People living close to turbines claim that the low level noise is causing stress-related illness.

BBC: Last Updated: Tuesday June 07 2005 15:38 GMT

To start with, the handset will feature a dedicated Waze launcher key for GPS navigation duties, and will also sport "high level noise reduction and echo cancellation, " along with hands-free voice activation.

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Opponents said the new runway would create an unacceptable level of noise and pollution and destroy the landscape.

BBC: Redhill Aerodrome in revised Surrey runway bid