利用智能手机测量不同传播介质中声速的实验装置设计

doi:10.14139/j.cnki.cn22-1228.2023.02.022

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摘要

利用智能手机自制简易实验装置，搭建了一套驻波法声速测量系统，实现了声波在空气和不同液体介质中的传播速度的准确测量。实验使用手机FreqCounterAPP 产生单频声波信号，采用DaTunerAPP软件检测实时频率和声音强度，通过测得相邻波腹或波节间的距离，根据其与频率和声速间的关系即可求出所测声速值。所取得实验结果与理论值具有良好的一致性。

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	任资卓
	王　宁

关键词: 声速驻波法传播介质智能手机

Abstract:

A simple sound velocity measurement device based on smartphone is designed to take accuratemeasurements of the sound velocity in different propagation media using the standing wave method. In theexperiment ,the FreqCounter APP on the smartphone is used to generate a single frequency acoustic signal.TheDaTuner APP,on the other hand, is used to detect in real-time the frequency and intensity of the acousticwave.By measuring the distance between adjacent antinodes or nodes , the sound velocity can be calculated according to the relationship among the frequency, the sound velocity, and the distance between adjacentantinodes.The sound velocity values obtained from the experiments are in good agreement with the theoreticavalues.

Key words: sound velocity standing wave method propagation media smartphone

出版日期: 2023-04-25 发布日期: 2023-04-25 整期出版日期: 2023-04-25

ZTFLH:

O 422.1

引用本文:

任资卓, 王　宁 . 利用智能手机测量不同传播介质中声速的实验装置设计 [J]. 大学物理实验, 2023, 36(2): 100-106.
REN Zizhuo, WANG Ning. Design of a Smartphone-Based Sound Velocity MeasurementDevice for Different Propagation Media . Physical Experiment of College, 2023, 36(2): 100-106.

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http://dawushiyan.jlict.edu.cn/CN/10.14139/j.cnki.cn22-1228.2023.02.022 或 http://dawushiyan.jlict.edu.cn/CN/Y2023/V36/I2/100

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