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无处不在的声音我们生活在一个声音的“海洋”里,这种看不见的“能量”影响着我们的情绪、心理,甚至健康.从物理学角度讲,噪声是发声体做无规则振动时发出的声音:而在实际生活中,凡是妨碍到人们正常休息、学习和工作,对要听的声音产生干扰的声音,都是噪声,尤其是那些高分贝的声音,更是“人人喊打”.北京的南锣鼓巷作为北京最古老的街区之一.这里浓缩了胡同文化的精华和韵味,也是现代与传统的交融之地——游客密集、店铺林立、空间狭小,声音嘈杂.在一个周末的下午,我突发奇想,带着分贝仪来到这里.在当街实测的半小时里,噪声值最低67 dB,最高则达到了73 dB.按照城市5类环境噪声最高限值[0类,40(夜),50(昼);1类,45(夜),55(昼);2类,50(夜),60(昼);3类,55(夜),65(昼);4类,55(夜),70(昼),单位均为dB]来看,其峰值已经达到了4类标准,说明这条繁华的胡同是非常嘈杂的.
Ubiquitous voice We live in a sound of “ocean”, this invisible “energy” affects our emotions, psychology, and even health.From the physical point of view, the noise is the sounding body to do No rules vibrate when the sound: And in real life, all that interfere with people’s normal rest, study and work, to listen to the voices of sound interference are noise, especially those high-decibel sound, but also “Everyone shouts.” Beijing’s Nanluogu Alley is one of the oldest neighborhoods in Beijing, concentrating the essence and charm of the alley culture, as well as the blending of modernity and tradition - densely populated shops, small shops , A noisy sound.On a weekend afternoon, I whim, came with a decibel meter in the street measured half an hour, the minimum noise 67 dB, up to a maximum of 73 dB.According to the city 5 kinds of environmental noise Category 1, 45 (night), 55 (day); category 2, 50 (night), 60 (day); category 3, 55 (night) , 65 (day); 4, 55 (night), 70 (day) units are dB], the peak has reached the standard of four categories, indicating that the bustling alley is very noisy.