优美的舞曲、甜美的歌曲令人心情舒畅,激昂的进行曲使人奋进.但是,建筑工地上杂乱的声音使人头痛,大声喧哗则令人心烦意乱.为什么同是声音,人们的感受有如此大的区别?优美的舞曲、甜美的歌曲、激昂的进行曲等声音是乐音,而建筑工地上杂乱的声音、大声喧哗等声音都是噪声.什么是噪声从物理学的角度看,噪声是指发声体做无规则振动时发出的声音.从环境保护的角度看,凡是妨碍人们正常休息、学习和工作的 Beautiful dance, sweet songs make people feel comfortable, passionate march enterprising, but messy construction site makes a headache, loud noise is upset .What is the same voice, people feel so The big difference? Beautiful dance, sweet songs, passionate march and other sounds are music, and construction sites messy sound, loud noise and other sounds are noise. What is noise from a physics point of view, the noise is the sound When the body makes irregular vibrations, it sounds from the environmental protection point of view, all those who obstruct the normal rest, study and work