学习了《声现象》后,同学们对噪声的控制产生了兴趣,于是他们计划比较一下常用的隔音材料的隔音效果。下面是他们设计和进行实验的过程。一、用什么做声源声源应该是生活中常见或者实验室中有的发声体,同学们想到了音叉、手机、闹钟、收音机等。最后经过讨论,大家一致认为用闹钟做声源最合适,因为其他声源发声的响度都不够稳定,会对测量结果造成影响。二、选择研究对象同学们搜集了常见的隔音材料,从中选取了三种有代表性的材 After studying the “Sound Phenomenon,” students became interested in the control of noise, so they planned to compare the sound insulation effects of commonly used sound insulation materials. Here is the process of designing and conducting experiments. First, what to use as a source of sound sources should be common in life or in the laboratory there are sounders, students thought of tuning fork, cell phone, alarm clock, radio and so on. After discussion, we all agreed that the use of an alarm clock as the sound source is most appropriate, because the loudness of sound produced by other sound sources is not stable enough, and it will affect the measurement results. Second, choose the object of study Students collected common sound insulation materials, from which selected three representative materials