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1、ELECENG,Edinburgh2007DIGITALSIGNALPROCESSING(DSP)SergiyA.VorobyovandPaoloFavaroDepartmentofElectrical,Electronic,andComputerEngineeringHeriot-WattUniversityELECENG,Edinburgh2007CALENDAROFDSPCOURSE²Introduction²Time-DomainAnalysisofDiscreteSignalsandSystems²Frequency-DomainAnalysisUsingFourier
2、andz-Transforms²FastFourierTransform(FFT)Processing²DesignofNonrecursiveandRecursiveDigitalFilters²RandomSignalAnalysis²DSPProcessors²AdaptiveFilteringandAdaptiveSignalProcessing²SpectralAnalysisandSignalCompressionHeriot-WattUniversity1Dept.Electrical,Electronic,andComputerEngineeringELECENG
3、,Edinburgh2007COURSETEXTBOOK²AlanV.OppenheimandRonaldW.SchaferDiscrete-TimeSignalProcessing1st(1989)or2nd(1999)EditionPrenticeHall,NJISBN0-13-754920-2http://www.prenhall.comHeriot-WattUniversity2Dept.Electrical,Electronic,andComputerEngineeringELECENG,Edinburgh20071INTRODUCTIONTODISCRETESIGNA
4、LS1.1ThescopeofDSPExamplesofanaloguesignalsappearinginnature:²electricalsignals:voltages,currents,fields²acousticsignals:mechanicalvibrations,soundwaves²mechanicalsignals:displacements,velocities,forces,momentsAnalogueprocessingmayincludethefollowingoperations:²linear:amplification,filtering,int
5、egration,differentiation²nonlinear:squaring,rectification,inversionHeriot-WattUniversity3Dept.Electrical,Electronic,andComputerEngineeringELECENG,Edinburgh2007Limitationsofpracticalanalogueprocessing:²restrictedaccuracy(e.g.,componentvariationswithtime,temperature,etc.)²restricteddynamicrange²s
6、ensitivitytonoise²inflexibilitytoalteroradjusttheprocessingfunctions²problemsinimplementingaccuratenonlinearandtime-synchronizedoperations²highcostofdatastorageandtransmission²limitedspeedofoperationHeriot-WattUniversity4Dept.Electrical,Electronic,andComputerEngineeringELECENG,Edinburgh2007DSP
7、operations:²convertinganaloguesignalsintoadigital(usuallybinary)sequence²performingallsignalprocessingoperationsinthedigitalform²ifnecessary,convertingthedigitalinformationbacktoanaloguesignalAtypicalDSPschemeANALOGADCDACANALOGANALOGDSPANALOG
