基于智能手机的亥姆霍兹共振声速测量实验

doi:10.16854/j.cnki.1000-0712.220247

College Physics ›› 2023, Vol. 42 ›› Issue (6): 40-.doi: 10.16854/j.cnki.1000-0712.220247

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Using Helmholtz resonators to measure sound velocity based on smartphone

ZHAI Li-peng1，CHENG Lin2，ZHANG Jun-wu1，CHANG Kai-ge1，TONG Tong1

1. National College Physics Experimental Teaching Demonstration Center, School of Physics,
Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China;
2. School of Science, Xi’an Polytechnic University, Xi’an, Shaanxi 710048, China

Received:2022-05-11 Revised:2022-08-05 Online:2023-07-01 Published:2023-07-06

Abstract

Abstract: 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.

Key words: smartphone, Helmholtz resonators, sound velocity

ZHAI Li-peng, CHENG Lin, ZHANG Jun-wu, CHANG Kai-ge, TONG Tong. Using Helmholtz resonators to measure sound velocity based on smartphone[J].College Physics, 2023, 42(6): 40-.

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Using Helmholtz resonators to measure sound velocity based on smartphone

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