基于声卡的LabVIEW噪声采集与分析系统设计  

A noise Acquisition and Analysis System in LabVIEW based on sound card

作　　者：王月[1] 孙林[1] 刘广益[2] 吴胜[2] 

机构地区：[1]中国地质大学(武汉)机电学院,武汉430074 [2]武汉钢铁股份有限公司,武汉430083

出　　处：《微计算机信息》2009年第13期88-89,188,共3页Control & Automation

基　　金：基金申请人:孙林;项目名称:无取向硅钢连续脱碳退火及涂层的高速化生产关键技术研究与应用;基金颁发部门:湖北省科技厅(2006ABA346)

摘　　要：设计出一个用计算机中的普通声卡,而不是专业的环保设备对环境噪声进行采集和分析的系统。它利用噪声的时间特性、数据库技术以及labVIEW平台编写程序,实现信号的采集和分析。能用离散傅立叶变换数据处理方法对所获得的声音信号的各种属性值加以提取、存储与分析处理,也能以直观定量的形式表现出特定时刻、特定地点的噪声分布与属性值。不仅可以用于对生存空间环境噪声进行定量监测与分析,还能推广到振动等信号监测与分析。A software system of noise signal acquisition and analysis was designed, which based not on special equipment, but on a common sound card in a computer. Programmed by LabVIEW , utilized time characteristic and database technique,It could not only collect and analyze noise varying from time to time by DFT , but also display and reproduce noise signal. So noise distribution visu- ally could be observed, and most important parameters of noise could be accurately calculated.By means of the system, the noise of life environment could he not only inspected, but also extended to observe and analyze signals, such as the vibration.

关 键 词：声卡 噪声采集 LABVIEW 频谱 LabSQL工具包 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置] X827[自动化与计算机技术—控制科学与工程]