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论文题目：基于MATLABGUI的数字信号处理实验平台设计专业：通信工程学生：冯旭签名：＿＿＿＿＿指导教师：张鸣签名：＿＿＿＿＿摘要数字信号处理是一门涉及许多学科而又广泛应用于许多领域的新兴学科，主要应用在通信、电气控制、生物医学、遥测遥感、地质勘探、航空航天、自动化仪表等领域，它涵盖内容多、概念抽象、原理复杂、推理繁琐，因此，在有限的的课堂时间内掌握这门课程的知识是对学生的基本要求。本文主要研究了数字信号处理实验平台的设计，首先，利用MATLABGUI完成数字信号处理课程中的离散系统时频域分析、离散傅里叶变换、快速傅里叶变换、IIR滤波器和FIR滤波器设计5个模块的界面构建，然后，利用MATLAB语言完成图形用户界面（GUI）的编程，最后，对数字信号处理实验平台的各个实验界面进行测试与优化。该实验平台将数字信号处理课程中的重点、难点用交互式、实时、可视化界面进行展示，有利于教师的教学和学生的学习，具有一定的应用价值。【关键词】数字信号处理实验平台MATLAB图形用户界面（GUI）【论文类型】设计型Title:TheDesignofDigitalSignalProcessingExperimentPlatformBasedOnMATLABGUIMajor:CommunicationEngineeringName:FengXuSignature:＿＿＿＿＿Supervisor:ZhangMingSignature:＿＿＿＿＿ABSTRACTDigitalsignalprocessingisanewdisciplinewhichinvolvesmanysubjectsandwidelyusedinmanyfields.Itmainlyusedincommunications,electricalcontrol,biomedical,remotesensing,geologicalexploration,aerospace,automationinstrumentandotherfields.Itincludesmuchmorecontentandabstractconcept.Ithasmorecomplexprinciplesandcomplicatedreasoning.Therefore,inthelimtitedclassroomtime,tomastertheknowledgeofthecourseisabasicrequirementofstudents.Thispapermainlystudiesthedesignofdigitalsignalprocessingexperimentplatform.Firstly,usingMATLABGUItocompletetheconstructionofdigitalsignalprocessingcourseinthefivemodules:thefrequencydomainanalysisandthetimedomainanalysisofdiscretesystem,discreteFouriertransform,fastFouriertransform,FIRfilterdesignandIIRfilterdesign.afterthat,usingMATLABprogramminglanguagetocompletegraphicaluserinterface(GUI)programming.finally,throughtestingandoptimizingthedigitalsignalprocessingexperimentplatform,wecandisplaythekeyanddifficultcontentbytheinteractive,realtimeandvisualexperimentplatform.Itishelpfulfortheteachingofteachersandstudents'learning,andithassomeapplicationvalue.【Keywords】DigitalSignalProcessingExperimentPlatformMATLABGraphicalUserInterfaces（GUI）【TypeofThesis】Design目录1绪论·······································································································11.1研究目的及意义··················································································11.2国内外研究现状··················································································11.3MATLABGUI简介··············································································21.4本文研究内容·····················································································22数字信号处理实验平台设计····································································42.1实验平台分析·····················································································42.1.1实验平台的基本结构····································································42.1.2实验平台设计的步骤····································································52.2开始引导界面与实验主界面设计·····························································52.3子界面的设计·····················································································62.3.1离散系统时频域分析实验界面设计··················································62.3.2离散信号傅里叶变换实验界面设计··················································82.3.3离散序列快速傅里叶变换实验界面设计············································92.3.4IIR滤波器实验界面设计······························································102.3.5FIR滤波器实验界面设计·····························································112.4本章小结·························································································133实验平台测试·······················································································143.1离散信号时频域分析··········································································143.1.1常见离散信号···········································································143.1.2离散信号时域变换·····································································153.1.3离散信号时域运算·····································································153.1.4离散信号的卷积········································································163.1.5离散LTI系统的时域分析····························································173.1.6离散LTI系统的频域分析···························································193.2离散傅里叶变换·················································································203.2.1离散时间序列傅里叶变换（DTFT）··············································203.2.2周期序列离散傅里叶级数（DFS）················································213.2.3离散信号傅里叶变换（DFT）······················································223.3快速傅里叶变换················································································233.3.1基二快速傅里叶变换原理····························································233.3.2离散序列的快速傅里叶变换实验测试·············································243.4IIR滤波器设计··················································································253.4.1常见的模拟低通滤波器设计·························································253.4.2模拟滤波器的频带变换·······························································293.4.3脉冲响应不变法设计IIR数字滤波器·············································313.4.4双线性变换法设计IIR数字滤波器················································323.4.5直接函数法设计IIR数字滤波器····················································343.4.6IIR滤波器的应用·······