基于Labview的声卡数据采集与处理系统设计  

Design of sound card data acquisition and processing system based on LabVIEW

作　　者：胡成娟 HU Cheng-juan(Shaanxi Xueqian Normal University,Network and Information Center,Xi’an 710061,China)

机构地区：[1]陕西学前师范学院网络与信息中心,陕西西安710061

出　　处：《电子设计工程》2018年第16期177-180,共4页Electronic Design Engineering

摘　　要：文章针对各领域音频信号的采集、分析等需求,在阐述声卡工作原理基础上,提出依托Labview软件设计声卡数据采集与处理系统,并详细介绍该系统软、硬件设计情况。在此基础上,利用吉他多音色测试实验进行验证,测试结果表明,处在标准信号3%的误差范围之内,检测准确度最高为93.76%,系统具备较高的稳定性及准确度。通过多次测试发现,误差处在3~5%范围内,测试准确度处于最高状态。表明本文所设计的系统能及时获取声音信号检测结果,满足语音识别、噪声检测等方面的需求。According to the requirements of audio signal acquisition and analysis in various fields,based on the principle of sound card,this paper puts forward the data acquisition and processing system of sound card based on LabVIEW software,and introduces the hardware and software design of the system in detail.On this basis,using the guitar Multi-timbral test to verify,the test results show that within the error range of the standard signal 3%,the detection accuracy is up to 93.76%,the system has high stability and accuracy.Through many tests,it is found that the error is in the range of 3~5%,and the test accuracy is in the highest state.It shows that the system designed in this paper can get the results of sound signal detection in time,and meet the requirements of speech recognition and noise detection.

关 键 词：LABVIEW 声卡 硬件设计 数据采集与处理系统 

分 类 号：TP724[自动化与计算机技术—检测技术与自动化装置]