基于声卡的虚拟仪器及其在声速测定实验中的应用  

Virtual instruments based on sound card and its applications to the sound velocity measurement

作　　者：黄贤群[1] 刘秋武[1] 张庆[1] 

机构地区：[1]韩山师范学院物理与电子工程系

出　　处：《实验技术与管理》2010年第8期94-96,共3页Experimental Technology and Management

基　　金：2009年韩山师范学院青年科学基金项目(LQ200908)

摘　　要：利用虚拟仪器编程语言LabVIEW作为开发平台,以普通的计算机声卡代替专业的数据采集卡,设计与实现了基于声卡的虚拟示波器和虚拟信号发生器,并利用该虚拟仪器和共鸣管测定声速,提高了共鸣管测声速的精度。The virtual instrument programming language is LabVIEW used as a development platform and the computer sound card is used to replace an ordinary professional data acquisition card.This paper designs and realizes a virtual instrument which can realize the functions of digital storage oscilloscope and signal generator based on sound card.Using this virtual instrument can measure the sound velocity with resonant pipe,and the aceuracy of measurement is improved.

关 键 词：声卡 虚拟仪器 声速 共鸣管 

分 类 号：O4-33[理学—物理] TP391[自动化与计算机技术—计算机应用技术]