标签: responses

Alinearsystem'scharacteristicsarecompletelyspecifiedbythesystem'simpulseresponse,asgovernedbythemathematicsofconvolution.Thisisthebasisofmanysignalprocessingtechniques.Forexample:Digitalfiltersarecreatedbydesigninganappropriateimpulseresponse.Enemyaircraftaredetectedwithradarbyanalyzingameasuredimpulseresponse.Echosuppressioninlongdistancetelephonecallsisaccomplishedbycreatinganimpulseresponsethatcounteractstheimpulseresponseofthereverberation.Thelistgoesonandon.Thischapterexpandsonthepropertiesandusageofconvolutioninseveralareas.First,severalcommonimpulseresponsesarediscussed.Second,methodsarepresentedfordealingwithcascadeandparallelcombinationsoflinearsystems.Third,thetechniqueofcorrelationisintroduced.Fourth,anastyproblemwithconvolutionisexamined,thecomputationtimecanbeunacceptablylongusingconventionalalgorithmsandcomputers.CHAPTERPropertiesofConvolution7Alinearsystem'scharacteristicsarecompletelyspecifiedbythesystem'simpulseresponse,asgovernedbythemathematicsofconvolution.Thisisthebasisofmanysignalprocessingtechniques.Forexample:Digitalfiltersarecreatedbydesigninganappropriateimpulseresponse.Enemyaircraftaredetectedwithradarbyanalyzingameasuredimpulseresponse.Echosuppressioninlongdistancetelephonecallsisaccomplishedbycreatinganimpulseresponsethatcounteractstheimpulseresponseofthereverberation.Thelistgoesonandon.Thischapterexpandsonthepropertiesandusageofconvolutioninseveralareas.First,severalcommonimpulseresponsesarediscussed.Second,methodsarepresentedfor……

Chebyshevfiltersareusedtoseparateonebandoffrequenciesfromanother.Althoughtheycannotmatchtheperformanceofthewindowed-sincfilter,theyaremorethanadequateformanyapplications.TheprimaryattributeofChebyshevfiltersistheirspeed,typicallymorethananorderofmagnitudefasterthanthewindowed-sinc.Thisisbecausetheyarecarriedoutbyrecursionratherthanconvolution.Thedesignofthesefiltersisbasedonamathematicaltechniquecalledthez-transform,discussedinChapter33.ThischapterpresentstheinformationneededtouseChebyshevfilterswithoutwadingthroughamireofadvancedmathematics.CHAPTERChebyshevFilters20Chebyshevfiltersareusedtoseparateonebandoffrequenciesfromanother.Althoughtheycannotmatchtheperformanceofthewindowed-sincfilter,theyaremorethanadequateformanyapplications.TheprimaryattributeofChebyshevfiltersistheirspeed,typicallymorethananorderofmagnitudefasterthanthewindowed-sinc.Thisisbecausetheyarecarriedoutbyrecursionratherthanconvolution.Thedesignofthesefiltersisbasedonamathematicaltechniquecalledthez-transform,discussedinChapter33.ThischapterpresentstheinformationneededtouseChebyshevfilterswithoutwadingthroughamireofadvancedmathematics.TheChebyshevandButterworthResponsesTheChebyshevre……

摘要：本应用笔记介绍了一个方法，使用集成模块和一些简单的数学运算产生的任何命令的滤波器响应。该方法是准确的，容易申请，替代“标准”的一套过滤网络时需要非标准的滤波器响应。Maxim>AppNotes>FilterCircuits(Analog)Keywords:filterdesign,filters,analog,design,filterresponsesNov19,2001APPLICATIONNOTE727FilterDesignUsingIntegratorBlocksAbstract:Thisapplicationnoteexplainsamethodthatusesintegratorblocksandsomesimplemathematicalmanipulationtoproducefilterresponsesofanyorder.Themethodisprecise,easytoapply,andanalternativetoa"standard"setoffilternetworkswhenanonstandardfilterresponseisneeded.IntroductionMuchliteratureandsoftwarehasbeenpublishedonthedesignandimplementationofstandardfilterresponses.Whenanonstandardfilterresponseisrequired,itisoftenlefttothecircuitdesignertoproduceasolutionusinghisorhero……