IV DigitalFiltering LinaJ.Karam ArizonaStateUniversity JamesH.McClellan GeorgiaInstituteofTechnology 11DigitalFiltering LinaJ.Karam,JamesH.McClellan,IvanW.Selesnick,andC.Sidney Burrus Introduction • StepsinFilterDesign • ClassicalFilterDesignMethods • OtherDevelopmentsin DigitalFilterDesign • SoftwareTools D IGITALFILTERINGisoneofthemostimportantfunctionsindigitalsignalprocessing,and thissinglechapternotonlyprovidesathoroughcoverageofconventionaltopicssuchasFIR andIIRfiltering,italsopresentsmaterialondesignmethodsandnewresearchdirections thathavenotbeenwidelyavailableintheopenliterature. KaramandMcClellanpresentan“IntroductiontoDigitalFiltering”,followedbyKaram’s“Steps inFilterDesign”.AcomprehensivecoverageofFIRandIIRclassicalfilterdesignfollowsin“FIR DesignMethods”bySelesnick,Burrus,Karam,andMcClellan,and“IIRDesignMethods”byKaram, SelesnickandBurrus,respectively.Uniquetothischapteristhespecialdiscussionof“SoftwareTools” forfilteringbyMcClellan. Thevarioustopicscoveredinthissectionareintegratedtogetherverywell,ensuringacoherent andauthoritativecoverageofthefilteringarea. c 1999byCRCPressLLC . SelesnickandBurrus,respectively.Uniquetothischapteristhespecialdiscussionof“SoftwareTools” forfilteringbyMcClellan. Thevarioustopicscoveredinthissectionareintegratedtogetherverywell,ensuringacoherent andauthoritativecoverageofthefilteringarea.