为改进音叉声波干涉实验,有文章介绍用双喇叭收录机演示.这一方法虽然简单易行,但产生的干涉声场强弱不够分明.本人在教学实践中经过多次改进,制成了“声波干涉音箱”,效果令人满意.具体做法是:准备两只袖珍收音机用的小喇叭,另取塑料泡沫方块,割出喇叭孔后把小喇叭嵌入到塑料泡沫块里,制成一对泡沫“音箱”,见图示.小喇叭的低盒面积小,波源可近似为点状.演示时把音箱挂到 In order to improve the tuning fork acoustic interference experiment, an article was introduced to demonstrate with a dual-speaker tape recorder. Although this method is simple and easy, the intensity of the interference sound field produced is not clear enough. I have made several improvements in teaching practice to create “sonic wave interference.” “Speaker”, the effect is satisfactory. The specific approach is: to prepare two small speakers used in pocket radio, another take the plastic foam box, cut out the hole in the speaker and insert the small speaker into the plastic foam block, made of a pair of foam "speaker See the illustration. The small box has a small box area and the wave source can be approximated as a spot.