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1、郑州轻工业学院毕业设计(论文)外文资料翻译院系电子信息工程专业班级电子信息工程学生姓名靖世敏学号540901030111外文出处附件：1.外文资料翻译译文（约3000汉字）；2.外文资料原文(与课题相关的1万印刷符号左右)。指导教师评语： 指导教师签名： 年 月 日英文原文ThesimulationandtherealizationofthedigitalfilterWiththeinformat
2、ionageandtheadventofthedigitalworld,digitalsignalprocessinghasbecomeoneoftoday'smostimportantdisciplinesanddoortechnology.Digitalsignalprocessingincommunications,voice,images,automaticcontrol,radar,military,aerospace,medicalandhouseholdappliances,andmany
3、otherfieldswidelyapplied.Inthedigitalsignalprocessingapplications,thedigitalfilterisimportantandhasbeenwidelyapplied.1、figuresUniton:AnaloganddigitalfiltersInsignalprocessing,thefunctionofafilteristoremoveunwantedpartsofthesignal,suchasrandomnoise,ortoex
4、tractusefulpartsofthesignal,suchasthecomponentslyingwithinacertainfrequencyrange.Thefollowingblockdiagramillustratesthebasicidea.Therearetwomainkindsoffilter,analoganddigital.Theyarequitedifferentintheirphysicalmakeupandinhowtheywork.Ananalogfilterusesan
5、alogelectroniccircuitsmadeupfromcomponentssuchasresistors,capacitorsandopampstoproducetherequiredfilteringeffect.Suchfiltercircuitsarewidelyusedinsuchapplicationsasnoisereduction,videosignalenhancement,graphicequilibriuminhi-fisystems,andmanyotherareas.T
6、herearewell-establishedstandardtechniquesfordesigningananalogfiltercircuitforagivenrequirement.Atallstages,thesignalbeingfilteredisanelectricalvoltageorcurrentwhichisthedirectanalogueofthephysicalquantity(e.g.asoundorvideosignalortransduceroutput)involve
7、d.Adigitalfilterusesadigitalprocessortoperformnumericalcalculationsonsampledvaluesofthesignal.Theprocessormaybeageneral-purposecomputersuchasaPC,oraspecializedDSP(DigitalSignalProcessor)chip.TheanaloginputsignalmustfirstbesampledanddigitizedusinganADC(an
8、alogtodigitalconverter).Theresultingbinarynumbers,representingsuccessivesampledvaluesoftheinputsignal,aretransferredtotheprocessor,whichcarriesoutnumericalcalculationsonthem.Thesecalculationstypicallyinvolvemultiplyingthei
