MATLAB在数字频谱仪开发中的应用  

Application of MATLAB in Development of Digital Spectrum Analyzer

作　　者：刘晓明[1] 仝晓田[1] 李友兴[1] 

机构地区：[1]昆明理工大学机电学院,云南昆明650093

出　　处：《新技术新工艺》2012年第6期41-44,共4页New Technology & New Process

摘　　要：针对MATLAB强大的科学计算和图形显示界面功能,开发了数字信号频谱分析仪,实现了音频信号,如声卡信号、WAV文件信号以及标准信号发生器信号的读取和分析,其中时域信号分析方法包括均值、方差、有效值等;频域信号分析方法包括幅值谱、相位谱和功率谱等。并且介绍了数字频谱仪的设计原理和部分功能的具体实现方法,对开发一定功能的数字频谱仪提供了有效的方法和借鉴价值。According to strong scientific computing and graphics display interface function of MATLAB, we developed digital signal spectrum analyzer, which realized reading and analysis of the audio signals such as sound card signal, WAV files signal, standard signal generator, the time--domain signal analysis methods include mean and variance, RMS, etc. , frequency domain signal analysis methods include amplitude spectrum, phase spectrum, Power spectrum, etc.. This paper introduced the design principle of digital signal spectrum analyzer and the specific implementation method of a part of the function, which provided effective methods and reference value for the development of certain functions of digital spectrum analyzer.

关 键 词：MATLAB 数字频谱仪 信号分析 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]