| 基于最小二乘法的声速测定实验数据处理及分析 |
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| 引用本文： | 黄贤群. 基于最小二乘法的声速测定实验数据处理及分析[J]. 大学物理实验, 2012, 25(2): 75-77 |
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| 作者姓名： | 黄贤群 |
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| 作者单位： | 韩山师范学院,广东潮州,521041 |
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| 基金项目： | 韩山师范学院青年科学基金项目 |
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| 摘 要： | 用振幅极大值法比振幅极小值法测声速的误差小和声波在传播过程中声压按指数函数关系衰减。
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| 关 键 词： | 最小二乘法 声速测定 声压 衰减系数 |
The Experimental Data Processing and Analysis of the Sound Velocity Measuring Based on the Least Square Method |
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| HUANG Xian-qun. The Experimental Data Processing and Analysis of the Sound Velocity Measuring Based on the Least Square Method[J]. Physical Experiment of College, 2012, 25(2): 75-77 |
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| Authors: | HUANG Xian-qun |
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| Affiliation: | HUANG Xian-qun (Hanshan Normal University,Guangzhou Chaozhou 521041) |
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| Abstract: | Using the computer least square method process the experimental data of the sound velocity measuring.The results show that the error of measuring the speed of sound by the maximum amplitude method is small than by the minimum amplitude method in measuring sound velocity by resonance interference method and the sound pressure of the sound waves in the communication process attenuates by exponential function. |
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| Keywords: | least square method sound velocity measuring sound pressure attenuation coefficient |
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