【作者】 赵桂艳；

【导师】 柏逢明；

【作者基本信息】 长春理工大学 ， 检测技术及自动化装置， 2002， 硕士

【摘要】 本文基于“硬件的软件化”思想，在对信号分析、虚拟仪器技术和声卡的实用性进行理论分析的基础上，利用虚拟仪器专用语言Labwindows／CVI开发环境，设计了基于虚拟仪器技术的语音信号分析仪。 该系统主要包括硬件电路设计和软件程序设计两部分。硬件电路包括拾音器、信号调理电路和应用声卡实现的数据采集电路。软件部分采用模块化设计，包括软面板的设计和信号分析模块设计。信号分析部分又由5个子模块来实现：数据采集模块、数据读取模块、数据处理模块、数据存储模块和结果显示模块。在基本硬件电路实现的基础上，语音信号分析仪通过软件程序实现了信号分析的各项功能。该系统中，软件程序对整个仪器的功能实现起到关键性作用，程序越完善，仪器实现的功能就越强，这充分体现了虚拟仪器“软件就是仪器”的设计思想。该项研究具有语音信号分析仪的软升级、系统的自适应、窗口的显示直观醒目、联调的优化以及操作简便等特点。适用于音频检测系统的信号分析与处理。更多还原

【Abstract】 This article designed a kind of voice analyzer by using Labwindows/CVI based on the theoretical analysis of digital signal processing theories, virtual instrument technology and sound card application.This voice analyzer system includes two parts: hardware and software. Hardware consists of microphone, signal processing circuit and data collection circuit which is realized through sound card. Software uses modular programming and consists of virtual panel design and signal processing program which includes data collection module, reading data module, data processing module, data storing module and result showing module. The instrument realized all kind of signal analysis functions through software based on just simple hardware circuit. The software is very important to the whole system, and the more sophisticated the program is, the stronger the instrument is. All this embodies the idea that "software is instrument". This study has many strongpoints such as soft-upgrade, system self-adapting, windows visual showing, on-line debug optimization and so on. So this system is applicable to analyze and deal with signal in audio detecting system.更多还原