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汉语拼音：zào shēng wū rǎn

干扰人们休息、学习和工作的声音所造成的污染，多由机械振动或流体运动引起。安静环境中，约30分贝的声音就是噪声，超过50分贝，会影响睡眠和休息，90分贝以上，会损伤人的听觉，影响工作效率，严重的可致耳聋或诱发其他疾病。

• The image is often corrupted by noise in its collection, acquisition or transmission, The corrupted image is called noisy image.

  图像在采集、获取以及传输的过程中，往往要受到噪声的污染，被噪声污染了的图像叫做含噪图像。

• Experimental results show that this method can resist noise adding, JPEG compression, image cropping and filtering.

  仿真实验表明：该算法能很好地抵抗噪声污染、JPEG压缩、剪切、滤波等攻击。

• Recently, with the increasing sense of environment protection, automotive brake noise attracts much more attention than before.

  近年来，随着人们环保意识的增强，汽车制动产生的噪声污染备受关注。

• The noise pollution survey revealed a rather surprising and possibly amusing old-fashioned source of noise. It turned out to be snoring!

  这个有关噪声污染的调查还提示了一种出人意料外而同时可能会引人发笑的老式噪音源。它竟然是鼾声。

• Noise pollution is now-days one of the major pollutant sources over the world.

  随着工业及社会经济的发展，噪声污染是当今世界主要污染源之一。

• Traffic congestion, road traffic accidents, automobile exhaust and noise pollution, occupied the great constraints of urban development.

  交通拥堵、道路行车事故频发、汽车尾气和噪声污染严重超标，极大制约了城市发展。

• Noise is one of the main problems resulting in city environment pollution.

  噪声污染扰民是城区环境污染的主要问题之一。

• Urban traffic pollution has risen to one of the major sources of China's urban air and noise pollution.

  城市交通污染已经上升为我国城市大气和噪声污染的主要污染源之一。

• Firstly, the impulse noises are filtered out by the median filtering method through determining the number of impulse dots.

  算法首先滤除受脉冲噪声污染的像素点，采用基于个数判断脉冲噪声的中值滤波算法；