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自制“音叉波形图演示仪”创新教具

Author(s)：
许耀秋

Publication Title：

Wen Yuan (Middle School Edition) 2023 No.05

Affiliations：
中山市西区初级中学

Abstract：
初中阶段为了更好了解物体振动发声的情况，认识声音的特性，往往需要将声音以波形图方式呈现出来，人教版教材建议通过将音叉发出的声音信号输入示波器或计算机来观察声音的波形，其原理和操作都是学生难以亲身体验的，往往只能被动接受。该创新教具利用平面镜对光的反射的简单原理，可以让学生亲身操作，体验呈现波形图原理的过程，直观了解不同响度、不同音调波形图的区别。

Keywords：
平面镜；反射；波形图

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[1] 许耀秋.自制“音叉波形图演示仪”创新教具[J].Wen Yuan (Middle School Edition),2023(05),.

文渊(中学版)

Wen Yuan (Middle School Edition)

Language: 中文

CN：11-9275/G

ISSN：2096-627X

Publication Frequency: 月刊

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