噪声,从物理学的观点讲,就是各种频率与声强杂乱无序组合的声音。而生理学和心理学的观点则认为,令人不愉快、讨厌的以及对人们健康有危害的声音就是噪声。衡量噪声大小程度的单位是“分贝”。噪声大,则分贝高,反之亦然。 目前,城市噪声无处不在,无处 Noise, from the point of view of physics, is a combination of various frequencies and disorganized sounds. Physiology and psychology point of view, the unpleasant, nasty and harmful to human health sound is noise. The unit of measure of noise level is “decibel”. Large noise, then decibel high, and vice versa. At present, urban noise is everywhere and nowhere else