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“噪声的危害和控制”主要涉及噪声的定义、噪声的监测、噪声的危害和控制噪声的途径方法等内容,要掌握相关的概念,联系生活实际找到解决问题的途径.对噪声定义的理解从物理学角度看,声音是由于物体的振动产生的,有的振动是有规律的,如图1甲,这样的声音我们称之为乐音;而有的振动是无规律的,如图1乙,此时产生的声音称为噪声.从环保角度看,凡是妨碍人们正常工作、学习和休息的声音,以及对人们要听的声音起干扰作用的声音都称为噪声.这说明噪声与乐音之间没
“Noise Hazard and Control ” mainly involves the definition of noise, the monitoring of noise, the harm of noise and the way of controlling noise, etc. It is necessary to grasp the related concepts and find out the ways to solve the problem in real life. Understanding from a physics point of view, the sound is due to the vibration of the object, and some vibration is regular, such as Figure 1 A, such a sound we call music; and some vibration is irregular, as shown in Figure 1 B, the sound produced at this time is called noise. From an environmental point of view, all sounds that interfere with people’s normal work, study and rest, and interfere with people’s listening voices are called noise, which shows that noise and tones Not between