摘要
基于时间差法原理设计了利用电脑声卡和Audacity软件测量固体声速的实验.利用电脑声卡收集左右声道的声音并实时呈现在Audacity软件界面,可准确测得左右声道收集到声音的时间差,计算得到声音在固体材料中的传播速度.实验现象直观,可用于中学课外拓展实验.
Based on the principle of time difference method,an experiment was designed to measure the sound velocity of solid by using computer sound card and Audacity software.The computer sound card is used to collect the sound of the left and right sound channels and present it in real time on the Audacity software interface,which can accurately measure the time difference of the sound collected by the left and right sound channels and calculate the sound propagation speed in the solid material.The experiment phenomenon is intuitive,and can be used in the middle school extracurricular expansion experiment.
作者
陈丹慧
叶泽波
李德安
Chen Danhui;Ye Zebo;Li De′an(School of Physics and Telecommunicaion Engineering,South China Normal University,Guangzhou,Guangdong 510006)
出处
《物理通报》
CAS
2022年第1期120-123,共4页
Physics Bulletin
关键词
固体声速测量
时间差
声卡
Audacity软件
solid
measuring the sound velocity
time difference
sound cards
Audacity software
