基于智能手机的亥姆霍兹共振声速测量实验  

Using Helmholtz resonators to measure sound velocity based on smartphone

作　　者：翟立朋 程琳[2] 张俊武[1] 常凯歌 童童 ZHAI Li-peng;CHENG Lin;ZHANG Jun-wu;CHANG Kai-ge;TONG Tong(National College Physics Experimental Teaching Demonstration Center,School of Physics,Xi’an Jiaotong University,Xi’an,Shaanxi 710049,China;School of Science,Xi’an Polytechnic University,Xi’an,Shaanxi 710048,China)

机构地区：[1]西安交通大学物理学院物理国家级实验教学示范中心,陕西西安710049 [2]西安工程大学理学院,陕西西安710048

出　　处：《大学物理》2023年第6期40-45,共6页College Physics

基　　金：2020年西安交通大学教改项目(拔尖专项)(20BJ02Y)资助。

摘　　要：本文详细介绍了亥姆霍兹共振的基本原理,设计了一种可以在非实验室环境下完成的声速测量实验,使用算数平均及数据拟合两种数据处理方法对测量结果进行验证,相对误差分别为3.0%和2.8%,并分析了测量过程中声音的频谱分辨率对于共振腔大小的限制.该实验所需的器材在生活中容易获取,可用于学生居家或课外自主实验项目.The Helmholtz resonance principle is delved in detail.A sound velocity measurement experiment is designed that may be done outside a laboratory setting.The measurement results are verified by using two data processing methods,arithmetic average and data fitting.The relative errors are 3.0 percent and 2.8 percent,respectively.The experiment equipment is readily available in everyday life and can be utilized by students for autonomous experiment projects at home or outside classroom.

关 键 词：智能手机 亥姆霍兹共振 声速 

分 类 号：O4-33[理学—物理]