| 声速测量装置的改进 |
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| 引用本文： | 潘学军.声速测量装置的改进[J].物理实验,2006,26(5):18-21. |
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| 作者姓名： | 潘学军 |
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| 作者单位： | 四川师范大学,物理系,四川,成都,610066 |
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| 摘 要： | 采用低频数字信号源推动小型扬声器做声源,用静电式驻极体传感器做拾音器,对传统的声速测量装置进行了改进.改进后的装置不仅能测量不同频率的声速,而且又降低了成本.本文详细介绍了电路的组成及测量结果.
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| 关 键 词： | 声速测量 声源 驻极体传感器 |
| 文章编号： | 1005-4642（2006）05-0018-04 |
| 收稿时间： | 2005-12-26 |
| 修稿时间： | 2005-12-262006-03-16 |
Research to improve instrument for sound velocity measurement |
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| PAN Xue-jun.Research to improve instrument for sound velocity measurement[J].Physics Experimentation,2006,26(5):18-21. |
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| Authors: | PAN Xue-jun |
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| Institution: | Department of Physics, Sichuan Normal University, Chengdu 610066, China |
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| Abstract: | Using a speaker drived with the output of a low frequency numerical signal generator as sound source and an electret sensor as detector,traditional instrument for sound velocity measurement is improved.This new cost-effective instrument can measure the velocity of sound of different frequency.The design of the circuit and the measuring results are reported in this paper. |
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| Keywords: | sound velocity measurement sound source electret sensor |
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