外文翻譯--DSP的發(fā)展、現(xiàn)況及其應用.doc

DSPDevelopment,theStatusandItsApplicationDigitalsignalprocessing(DSP)isinvolvesmanydisciplinesandwidelyappliesinthemanydomainemergingdisciplines.DSPhastwokindsofmeanings:digitalSignalProcessing,DigitalSignalProcessor.WeoftensaythatwhatDSPreferstothedigitalsignalprocessor.TheDigitalSignalProcessorsaresuitablefortocompletedigitalsignalprocessingoperationoftheprocessor.Sincethe1960s,withthecomputerandtheinformationtechnologysswiftdevelopment,thedigitalsignalprocessingtechnologieshasarisenatthehistoricmomentandobtainstherapiddevelopment.Inthepastmorethean20years,thedigitalsignalprocessinghaswidelyappliedinthefieldofcommuniationandothers.Thedigitalsignalprocessingusesthecomputerorthespecial-purposehandlingequipment,carriesomprocessingandsoonfathering,transformation,filter,estimating,value,enhancement,compression,recognitionbythedigitalform,tolbtianthesignalformwhichthepiopleneed.Thedigitalsignalprocessingtskesthenemerousdisciplinesastheretionale,whosescopeisextremelyapplied.Forexample,inmathematicsdomain,thecalculus,theprobabilitystatistics,thestochasticprocess,thenumericalanalysisandsoon.Theyarethedigitalsignalprocessingbasictoolandtheyarerelateto,thesignalandthesystem,thecybernetics,thecorrespondencetheory,thefailurediagnosisandsoon.Recentlytheemergingsomedisciplines,liketheartificialintelligence,thepatternrecognition,theneuralnetworksandsoon,areinseparablewiththedigitalsignalprocessing.Itcanbesaidthatdigitalsignalprocessingtakesmanyclassicssysteminfosowmrationale,simultaneouslycausesitselftobeconeasericesifenergingdisciplinestherationale.TheDSPismainlyappliedinthedigitalsignalprocessing,thesimingtocansatisfythereal-timesignalprocessing,thereforeitneedstbedigitalsignalprocessingoperationexecutingquickly,thereforethesehavedecidedtheDSPcharacteristicandthekeytechnologies.Thedigitalsignalprocessingsthekeytechnologies:DSPcontainsmultiplier,accumulator,specialassressproducer,thecollareopensescirculationandsoon；rsisestheprocessingspddeedthekeytechnologies:assemblylinetechnology,parallelprocessingtechnology,verylonginstructionword,exceedingtheallowedfigurequantitytechnology,DMAtsakondofCPU.DSPandgeneralCPUarealsodifferent,thebiggestdifferenceliesin:CPUisVonNoumastructure；whileDSPtsthedataandtheaddressspaceseparatedHarvardstructure.ThecommercialprogrammablecomponentwhichintheworldisthefirstmonolithicDSPchipmustbetheS2811issuedbyAMICorporation,1979whichyearUSIntelCorporationissued2920isaDSPchipmainmilestone.ThesetwokindsofchipinteriordoesnothavethemonocyclemultiplierwhichthemodernDSPchipmusthave.In1980,JapansNECCorp.launchedPD7720isthefirstofamultiplierofcommercialDSPchips.Afterthis,themostsuccessfulDSPchipworksasthenumberUSTexasInstrumentsCompany(TI)aseriesofproducts.TIcorporrationsucceededin1982promotesitsfirstgenerationofDSPchipTMS3210andserialprlductsTMS32011,TMS320C10/C14/C15/C16?17andsoon,afterwardhaspromotedsecondgenerationofDSPoneadteranotherchipTMS32020,TMS320C25/C26/C28,THIRDGENERATIONdspCHIPTMD320C30/C31/C32,fourthgenerationofDSPchipTMS320C40/C44,fifthgenerationofDSPchipTMS320C5X/C54X,secondgenerationofDSPchipadvancedversionTMS320C2XX,collectionpieceofDSPchipsinbodyshignperformanceDPchipTMD320C8XaswellaspresentspeedquickestsixthgenerationofDSPchipTMS320C62X/C67Xandsoon.TIthecommonlyusedDSPchipinductionwillbethreebigseries,namely:TMS320C2000series(includingTMS320C2X/2XX),TMS320C5000series(includingTMS320C5X/C54X),TMS320C6000series(TMS320C62X/C67X).Now,TICorporationsaseriesofDSPchipproductalreadbecamenoeintheworldthemostinflutentialDSPchip.TICorporationalsobecomesthebiggestDSPchipsupplieranditsDSPmarketchareoccupiestheworldsharenearly50%.Atpresent,theDSPprocessorbyTI,AGERE,ADIandsoonwasstillseized,theproductiscontrolledtheforeignbigenterarise.AthometheDSPmanufacturearenotmany,butthemainapplicationproductisDVDandtheradiotelephoneandsoon.ThereforethedomesticDSPoutputvalueisnothign.Butintheproductapplication,teimportantDSPapplicationproduct,likethemobilephone,themodem,personalcomputerandthecommunicationdomainapplicationproduct,allusetheinternationalbigplantDSPsolution.TheDSPtechnologyappliescornerofourlife,frommilitarytocivil,theaerospaetotheproductionlife.Intheaerospaceaspect,theDSPtechnologymainlyusedintheradarandsonarsignaldisposal.Inthecorrespondenceaspect,mainlyusedinthemobilephone,VoiceOverIP,ADSLandHFCsignaling；Inthecontrolaspect,mainlyusedinthemotorcontrol,thelightdrivingwiththeharddiskdriver；Inthetest/surveyaspect,mainlyusesinthehypothesizedinstrumentmtheautomatedtestsystem,themedicaldiagnosisandsoon；Intheelectronicentertainmentaspect,mainlyusedinapplicationshigh-definitiontelevision(HDTV),set-topboxes(STB),AC-3,familytheater,DVD；Alsothedigitalcamera,thenetworkcameraandsoontoapplytheDSPtechnology.Atthesametime,theSOCchipsystem,willapply,embeddedDSPiswirelesthefutureDSPdevelopmentdirectionandthetendency,ItcanbesaidifthesetheDSPtherewillbefewpeopletobrowseinternetmultimedia,alsowillnothavethewirelesscommunication.Therefore,theDSPwillstillbetheentiresemiconductorindustrytechnicaldrivinginfluence.Now,theDSPapplicationsapplicationdomainexpandsunceasingly,itsletterscreenincludingwidebandinternetturningonservice,nextgenerationwirelesscommunicationsystemsdevelopment,digitalexpenseelectronmarket,automobileelectronmarketdevelopmentandsoonmanyvarious.ThemoderndigitalsignalprocessoriscariesoutthehighspeedfoguresignalprocessingICelectriccircuit,ittoadaptthemultimediainformationizationsecietydemandexactly,growsstrongrapidly,Now,worldappliedineachproductrealmofprlduction,moreoverDSPunceasinglywasstillespandingwiththedomain,thedevelopmentspeedisunusual.Themainapplicationsofitisthedigitizationmobilephone,thedatamodem,thedisk/CD-ROMcontrollerdemand,thegraphimageryprocessingdemand,theautomobleelectronsystemandsoon.TheusingoftheDSPdomainistoonumeroustociteindividually.IntheTVconferencesystem,alsoappliestheDSPcomponentmassively.IntheseeingandhearingmachinealsoappliestheDSP.Alongwithscienceandtechnologydevelopment,itwillpresentmanytheDSPnewapplicationdomain.TheDSPdevelopmentkitincludeseachkindofsimulationsoftware,thehardwaresimulator,theappraisalboard,thebeginnertotestthesuite,theteachingsuiteandsoon.OverseashassomeDSPConsultantfirmandthewebsite,theyhavetheDSPuserandtheDSPchipsupplier,betweentheDSPthirdpartybidgerole,alsowillprovedethedesignforthecustomer,toprovidethesoftwareaandthehardwareandthepublicationmaterialbooks,somewillalsohavethetrainingclass.AthometherearemanyDSPforums,sothattheusercancarryontheDSPthchnologytotheexchangeinformation.WiththerapidgrowthofChinasDSPmarket,theDSPapplicationinChinahasbeenmaintainingthesametechnologysynchronizationsituationinternationally.Alongwiththechinesesocietydigitization,theinformationizationprogressantinuedwiththechineseeconomytogronstablyhasstimulatedthefastdevelopmentofmarketandthelelctronicinformaioninclustryandpromotedtheDSPwidespreedapplication.DSP的發(fā)展、現(xiàn)況及其應用數(shù)字信號處理（DigitalSignalProcessing，簡稱DSP）是一門涉及許多學科而又廣泛應用于許多領域的新興學科。DSP有兩種含義：digitalSignalProcessing（數(shù)字信號處理）、DigitalSignalProcessor（數(shù)字信號處理器）。我們常說的DSP指的是數(shù)字信號處理器。數(shù)字信號處理器是一種適合完成數(shù)字信號處理運算的處理器。20世紀60年代以來，隨著計算機和信息技術的飛速發(fā)展，數(shù)字信號處理技術應運而生并得到迅速的發(fā)展。在過去的二十多年時間里，數(shù)字信號處理已經在通信等領域得到極為廣泛的應用。數(shù)字信號處理是利用計算機或專用處理設備，以數(shù)字形式對信號進行采集、變換、濾波、估值、增強、壓縮、識別等處理，以得到符合人們需要的信號形式。數(shù)字信號處理是以眾多學科為理論基礎的，它所涉及的范圍極其廣泛。例如，在數(shù)學領域，微積分、概率統(tǒng)計、隨機過程、數(shù)值分析等都是數(shù)字信號處理的基本工具，與網絡理論、信號與系統(tǒng)、控制論、通信理論、故障診斷等也密切相關。近來新興的一些