基于LabVIEW声速测量系统研究声速与温湿度的关系  

Measuring temperature and humidity dependent sound speed using LabVIEW

作　　者：管婉青[1] 郭明俊[1] 刘尧[1] 张祥雪[1] 

机构地区：[1]北京林业大学理学院,北京100083

出　　处：《物理实验》2013年第8期7-9,14,共4页Physics Experimentation

摘　　要：利用USB独立声卡结合虚拟仪器软件LabVIEW开发了声速测量系统,研究了声速与空气的温度、湿度之间的关系,得到了温湿度修正的声速经验公式.Using USB sound card and LabVIEW software, a sound speed measurement system was set up. The relationship between sound speed and air temperature and humidity was studied using this system. A revised empirical formula for temperature and humidity dependent sound speed was also obtained.

关 键 词：LABVIEW 声速 温度 湿度 相位法 李萨如图 

分 类 号：O422.1[理学—声学]