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讲三个问题:噪声来源、噪声影响的重要性和解决办法。(1)噪声来源可分为工作环境噪声和社会环境噪声。噪声到处存在,问题是其强度如何。(2)噪声影响除对接触者的身体、精神外还涉及了经济、政治方面。(3)解决办法:一方面需由政府、领导机构采取措施,另一方面是进行个人防护。Bolt教授谈到了船、飞机、地下铁道等危害大的噪声源。十个马力的电动机只产生1瓦的噪声,一个人大声叫唤只产生1毫(10~(-3))瓦的声能,平时说话声为1
Talk about three issues: the source of noise, the importance of noise impact and solutions. (1) Sources of noise can be divided into working environment noise and social environment noise. Noise everywhere, the question is how strong it is. (2) Noise Impact Besides the physical and mental contact with the people involved, it also involves economic and political aspects. (3) The solution: On the one hand, the government and leading institutions need to take measures, on the other hand, personal protection. Professor Bolt talked about the harmful noise sources such as ships, planes and subway lines. A ten-horsepower motor produces only 1 watt of noise. One person shouts only to produce 1 millisecond (10 -3) watts of acoustic energy, usually 1