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悦耳的声音会给人以美的感受,但是各种机械的振动声、汽车的引擎声、飞机的呼啸声,以及其他杂乱无章的声音,则会合成令人烦恼的噪声,不仅妨碍人们的正常生活,而且对人体健康也会带来严重危害。噪声污染知多重从物理学观点讲,噪声是含有多种音调成分的、无规律的复合声。通常以分贝为声级的单位来表示声音的强弱。随着近代工业和交通运输业的发展,机械设备向着大型、高速、强动力方向发展。随之产生
Pleasant voices will give people a beautiful feeling, but all kinds of mechanical vibrations, car engines, whistling aircraft, and other disorganized voices will synthesize annoying noise, not only hinder people’s normal life, But also on human health will bring serious harm. Know more about noise pollution From the physics point of view, the noise is composed of a variety of tonal components, irregular composite sound. Usually decibels for the sound level units to express the strength of the sound. With the development of modern industry and transportation, the machinery and equipment are moving toward large-scale, high-speed and strong driving forces. Produced accordingly