摘要
根据空气柱共振发声原理,采用三种不同方法利用Phyphox软件测量出管子发出共鸣音时的声音频率。对测量数据进行傅里叶变换后,选取最明显且是基频相同倍数的声音频率,采用线性拟合方法得到三种不同声速。三种方法的声速测量结果与理论值相对误差都在1.0%以内,说明测量方法可行并且实验趣味性较强。
According to the principle of resonance sound generation of air column,three different methods are used to measure the sound frequency when the pipe emits resonance sound by using Phyphox software.After Fourier transformation of the measured data,select the most obvious sound frequency that is the same multiple of the fundamental frequency,and use the linear fitting method to obtain the sound velocity of three different methods.The relative error between the measured results of sound velocity and the theoretical value of the three methods is within 1.0%,which shows that the measurement method is feasible and the experiment is interesting.
作者
姚星星
郑远
YAO Xingxing;ZHENG Yuan(Department of Physics,Zhejiang University,Hangzhou 310027,China)
出处
《大学物理实验》
2023年第3期74-77,共4页
Physical Experiment of College
基金
浙江大学实验技术研究项目(SYBJS202205)。
