外文翻譯--DSP的發(fā)展、現(xiàn)況及其應(yīng)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(yīng)用數(shù)字信號(hào)處理（DigitalSignalProcessing，簡(jiǎn)稱DSP）是一門涉及許多學(xué)科而又廣泛應(yīng)用于許多領(lǐng)域的新興學(xué)科。DSP有兩種含義：digitalSignalProcessing（數(shù)字信號(hào)處理）、DigitalSignalProcessor（數(shù)字信號(hào)處理器）。我們常說(shuō)的DSP指的是數(shù)字信號(hào)處理器。數(shù)字信號(hào)處理器是一種適合完成數(shù)字信號(hào)處理運(yùn)算的處理器。20世紀(jì)60年代以來(lái)，隨著計(jì)算機(jī)和信息技術(shù)的飛速發(fā)展，數(shù)字信號(hào)處理技術(shù)應(yīng)運(yùn)而生并得到迅速的發(fā)展。在過(guò)去的二十多年時(shí)間里，數(shù)字信號(hào)處理已經(jīng)在通信等領(lǐng)域得到極為廣泛的應(yīng)用。數(shù)字信號(hào)處理是利用計(jì)算機(jī)或?qū)Ｓ锰幚碓O(shè)備，以數(shù)字形式對(duì)信號(hào)進(jìn)行采集、變換、濾波、估值、增強(qiáng)、壓縮、識(shí)別等處理，以得到符合人們需要的信號(hào)形式。數(shù)字信號(hào)處理是以眾多學(xué)科為理論基礎(chǔ)的，它所涉及的范圍極其廣泛。例如，在數(shù)學(xué)領(lǐng)域，微積分、概率統(tǒng)計(jì)、隨機(jī)過(guò)程、數(shù)值分析等都是數(shù)字信號(hào)處理的基本工具，與網(wǎng)絡(luò)理論、信號(hào)與系統(tǒng)、控制論、通信理論、故障診斷等也密切相關(guān)。近來(lái)新興的一些