DigitalSignalProcessing 1DigitalSignalProcessing-AComputer-BasedApproach,SanjitK.Mitra,4thEdition,McGraw-Hill,2006ForewordTheTextbook:SanjitK.Mitra,ProfessorinDept.ofEE,USCandDept.ofECE,UCSB2n1.A.V.OppenheimandR.W.Schafer,DigitalSignalProcessing,2002n2.L.R.RabinerandB.Gold,TheoryandApplicationofDigitalSignalProcessing,1975n3.彭启综等彭启综等,DSP,电子科大电子科大出版社出版社,1995,1995n4.程佩青程佩青,清华大学出版社清华大学出版社,1997,1997年年 Referencebooks:Foreword3n1.TheTech.FieldsUsedDSP:Communication,Radio,Radar,Navigation,IT,etc.n2.TheCorrelatedCourse:ForewordCharacterizationOfTheCourseSignalsAndSystemsLogicCircuitProgrammTech.OfDSPDSPSoftwareRadioVLSI,ASIC,4Somesuggestions:understandbymathematicandlogic+imaginative,doexercisesandactivitiesGradingForeword10%10%Labs,exercises, Instructor/TA Input40%Final Exam20%QuizzesPERCENTAGESACTIVITIESMATLAB Exam20%51SignalsandSignalProcessinglWhats signal?“Asignal,asreferredtoincommunicationsystems,signalprocessingandelectronicengineering,isafunctionthatconveysinformationaboutthebehaviororattributesofsomephenomenon.”-from wikipedialProperties of Signalgenerated by natural or technical means.carry information.functions of 1 or more independent variables.61-DsignalAspeechA Speech Signal1SignalsandSignalProcessing72-DsignalAimage1SignalsandSignalProcessingDisccusion:Represent a video as a function 81SignalsandSignalProcessingContinous-timesignalcontinuousindependentvariables.1.1CharacterizationandClassificationofSignals91SignalsandSignalProcessingDiscrete-timesignaldiscreteindependentvariables.101SignalsandSignalProcessingAnalogsignalsContinuous-timesignalwithcontinuousamplitude.DigitalsignalsDiscrete-timesignalwithDiscrete-valuedamplitudes.(quantizedthevalues)(valuesofrealnumber)111SignalsandSignalProcessingHowcanwequantizethevaluesofsignal?therealvaluesofamplitudes121SignalsandSignalProcessingbytruncationIfthequantization step wechosed is1,wegetbyroundingDigitsDigits131SignalsandSignalProcessingTherepresentationofdigits in binary formThe Finite Wordlength EffectsbytruncationThevaluesofThevaluesof141SignalsandSignalProcessingIfthequantization step wechosed is0.01,wegetDigits151SignalsandSignalProcessingAdigitalsignalcouldbeconsideredthatitssameasadiscrete-timesignal.Thevaluesof(withthe Infinite Wordlength)16