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外文翻译--DSP的发展、现况及其应用.doc

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外文翻译--DSP的发展、现况及其应用.doc

DSPDEVELOPMENT,THESTATUSANDITSAPPLICATIONDIGITALSIGNALPROCESSINGDSPISINVOLVESMANYDISCIPLINESANDWIDELYAPPLIESINTHEMANYDOMAINEMERGINGDISCIPLINESDSPHASTWOKINDSOFMEANINGSDIGITALSIGNALPROCESSING,DIGITALSIGNALPROCESSORWEOFTENSAYTHATWHATDSPREFERSTOTHEDIGITALSIGNALPROCESSORTHEDIGITALSIGNALPROCESSORSARESUITABLEFORTOCOMPLETEDIGITALSIGNALPROCESSINGOPERATIONOFTHEPROCESSORSINCETHE1960S,WITHTHECOMPUTERANDTHEINFORMATIONTECHNOLOGYS’SWIFTDEVELOPMENT,,THEDIGITALSIGNALPROCESSINGTECHNOLOGIESHASARISENATTHEHISTORICMOMENTANDOBTAINSTHERAPIDDEVELOPMENTINTHEPASTMORETHEAN20YEARS,THEDIGITALSIGNALPROCESSINGHASWIDELYAPPLIEDINTHEFIELDOFCOMMUNIATIONANDOTHERSTHEDIGITALSIGNALPROCESSINGUSESTHECOMPUTERORTHESPECIALPURPOSEHANDLINGEQUIPMENT,CARRIESOMPROCESSINGANDSOONFATHERING,TRANSFORMATION,FILTER,ESTIMATING,VALUE,ENHANCEMENT,COMPRESSION,RECOGNITIONBYTHEDIGITALFORM,TOLBTIANTHESIGNALFORMWHICHTHEPIOPLENEEDTHEDIGITALSIGNALPROCESSINGTSKESTHENEMEROUSDISCIPLINESASTHERETIONALE,WHOSESCOPEISEXTREMELYAPPLIEDFOREXAMPLE,INMATHEMATICSDOMAIN,THECALCULUS,THEPROBABILITYSTATISTICS,THESTOCHASTICPROCESS,THENUMERICALANALYSISANDSOONTHEYARETHEDIGITALSIGNALPROCESSINGBASICTOOLANDTHEYARERELATETO,THESIGNALANDTHESYSTEM,THECYBERNETICS,THECORRESPONDENCETHEORY,THEFAILUREDIAGNOSISANDSOONRECENTLYTHEEMERGINGSOMEDISCIPLINES,LIKETHEARTIFICIALINTELLIGENCE,THEPATTERNRECOGNITION,THENEURALNETWORKSANDSOON,AREINSEPARABLEWITHTHEDIGITALSIGNALPROCESSINGITCANBESAIDTHATDIGITALSIGNALPROCESSINGTAKESMANYCLASSICSSYSTEMINFOSOWMRATIONALE,SIMULTANEOUSLYCAUSESITSELFTOBECONEASERIC\ESIFENERGINGDISCIPLINESTHERATIONALETHEDSPISMAINLYAPPLIEDINTHEDIGITALSIGNALPROCESSING,THESIMINGTOCANSATISFYTHEREALTIMESIGNALPROCESSING,THEREFOREITNEEDSTBEDIGITALSIGNALPROCESSINGOPERATIONEXECUTINGQUICKLY,THEREFORETHESEHAVEDECIDEDTHEDSPCHARACTERISTICANDTHEKEYTECHNOLOGIESTHEDIGITALSIGNALPROCESSING’STHEKEYTECHNOLOGIESDSPCONTAINSMULTIPLIER,ACCUMULATOR,SPECIALASSRESSPRODUCER,THECOLLAREOPENSESCIRCULATIONANDSOON;RSISESTHEPROCESSINGSPDD\\EEDTHEKEYTECHNOLOGIESASSEMBLYLINETECHNOLOGY,PARALLELPROCESSINGTECHNOLOGY,VERYLONGINSTRUCTIONWORD,EXCEEDINGTHEALLOWEDFIGUREQUANTITYTECHNOLOGY,DMATSAKONDOFCPUDSPANDGENERALCPUAREALSODIFFERENT,THEBIGGESTDIFFERENCELIESINCPUISVONNOUMASTRUCTURE;WHILEDSPTSTHEDATAANDTHEADDRESSSPACESEPARATEDHARVARDSTRUCTURETHECOMMERCIALPROGRAMMABLECOMPONENTWHICHINTHEWORLDISTHEFIRSTMONOLITHICDSPCHIPMUSTBETHES2811ISSUEDBYAMICORPORATION,1979WHICHYEARUSINTELCORPORATIONISSUED2920ISADSPCHIPMAINMILESTONETHESETWOKINDSOFCHIPINTERIORDOESNOTHAVETHEMONOCYCLEMULTIPLIERWHICHTHEMODERNDSPCHIPMUSTHAVEIN1980,JAPANSNECCORPLAUNCHEDΜPD7720ISTHEFIRSTOFAMULTIPLIEROFCOMMERCIALDSPCHIPSAFTERTHIS,THEMOSTSUCCESSFULDSPCHIPWORKSASTHENUMBERUSTEXASINSTRUMENTSCOMPANYTIASERIESOFPRODUCTSTICORPORRATIONSUCCEEDEDIN1982PROMOTESITSFIRSTGENERATIONOFDSPCHIPTMS3210ANDSERIALPRLDUCTSTMS32011,TMS320C10/C14/C15/C1617ANDSOON,AFTERWARDHASPROMOTEDSECONDGENERATIONOFDSPONEADTERANOTHERCHIPTMS32020,TMS320C25/C26/C28,THIRDGENERATIONDSPCHIPTMD320C30/C31/C32,FOURTHGENERATIONOFDSPCHIPTMS320C40/C44,FIFTHGENERATIONOFDSPCHIPTMS320C5X/C54X,SECONDGENERATIONOFDSPCHIPADVANCEDVERSIONTMS320C2XX,COLLECTIONPIECEOFDSPCHIPSINBODY’SHIGNPERFORMANCEDPCHIPTMD320C8XASWELLASPRESENTSPEEDQUICKESTSIXTHGENERATIONOFDSPCHIPTMS320C62X/C67XANDSOONTITHECOMMONLYUSEDDSPCHIPINDUCTIONWILLBETHREEBIGSERIES,NAMELYTMS320C2000SERIESINCLUDINGTMS320C2X/2XX,TMS320C5000SERIESINCLUDINGTMS320C5X/C54X,TMS320C6000SERIESTMS320C62X/C67XNOW,TICORPORATION’SASERIESOFDSPCHIPPRODUCTALREADBECAMENOEINTHEWORLDTHEMOSTINFLUT\ENTIALDSPCHIPTICORPORATIONALSOBECOMESTHEBIGGESTDSPCHIPSUPPLIERANDITSDSPMARKETCHAREOCCUPIESTHEWORLDSHARENEARLY50ATPRESENT,THEDSPPROCESSORBYTI,AGERE,ADIANDSOONWASSTILLSEIZED,THEPRODUCTISCONTROLLEDTHEFOREIGNBIGENTERARISEATHOMETHEDSPMANUFACTUREARENOTMANY,BUTTHEMAINAPPLICATIONPRODUCTISDVDANDTHERADIOTELEPHONEANDSOONTHEREFORETHEDOMESTICDSPOUTPUTVALUEISNOTHIGNBUTINTHEPRODUCTAPPLICATION,TEIMPORTANTDSPAPPLICATIONPRODUCT,LIKETHEMOBILEPHONE,THEMODEM,PERSONALCOMPUTERANDTHECOMMUNICATIONDOMAINAPPLICATIONPRODUCT,ALLUSETHEINTERNATIONALBIGPLANTDSPSOLUTIONTHEDSPTECHNOLOGYAPPLIESCORNEROFOURLIFE,FROMMILITARYTOCIVIL,THEAEROSPAETOTHEPRODUCTIONLIFEINTHEAEROSPACEASPECT,THEDSPTECHNOLOGYMAINLYUSEDINTHERADARANDSONARSIGNALDISPOSALINTHECORRESPONDENCEASPECT,MAINLYUSEDINTHEMOBILEPHONE,VOICEOVERIP,ADSLANDHFCSIGNALING;INTHECONTROLASPECT,MAINLYUSEDINTHEMOTORCONTROL,THELIGHTDRIVINGWITHTHEHARDDISKDRIVER;INTHETEST/SURVEYASPECT,MAINLYUSESINTHEHYPOTHESIZEDINSTRUMENTMTHEAUTOMATEDTESTSYSTEM,THEMEDICALDIAGNOSISANDSOON;INTHEELECTRONICENTERTAINMENTASPECT,MAINLYUSEDINAPPLICATIONSHIGHDEFINITIONTELEVISIONHDTV,SETTOPBOXESSTB,AC3,FAMILYTHEATER,DVD;ALSOTHEDIGITALCAMERA\,THENETWORKCAMERAANDSOONTOAPPLYTHEDSPTECHNOLOGYATTHESAMETIME,THESOCCHIPSYSTEM,WILLAPPLY,EMBEDDEDDSPISWIRELESTHEFUTUREDSPDEVELOPMENTDIRECTIONANDTHETENDENCY,ITCANBESAIDIFTHESETHEDSPTHEREWILLBEFEWPEOPLETOBROWSEINTERNETMULTIMEDIA,ALSOWILLNOTHAVETHEWIRELESSCOMMUNICATIONTHEREFORE,THEDSPWILLSTILLBETHEENTIRESEMICONDUCTORINDUSTRYTECHNICALDRIVINGINFLUENCENOW,THEDSPAPPLICATIONSAPPLICATIONDOMAINEXPANDSUNCEASINGLY,ITSLETTERSCREENINCLUDINGWIDEBANDINTERNETTURNINGONSERVICE,NEXTGENERATIONWIRELESSCOMMUNICATIONSYSTEM’SDEVELOPMENT,DIGITALEXPENSEELECTRONMARKET,AUTOMOBILEELECTRONMARKETDEVELOPMENTANDSOONMANYVARIOUSTHEMODERNDIGITALSIGNALPROCESSORISCARIESOUTTHEHIGHSPEEDFOGURESIGNALPROCESSINGICELECTRICCIRCUIT,ITTOADAPTTHEMULTIMEDIAINFORMATIONIZATIONSECIETYDEMANDEXACTLY,GROWSSTRONGRAPIDLY,NOW,WORLDAPPLIEDINEACHPRODUCTREALMOFPRLDUCTION,MOREOVERDSPUNCEASINGLYWASSTILLESPANDINGWITHTHEDOMAIN,THEDEVELOPMENTSPEEDISUNUSUALTHEMAINAPPLICATIONSOFITISTHEDIGITIZATIONMOBILEPHONE,THEDATAMODEM,THEDISK/CDROMCONTROLLERDEMAND,THEGRAPHIMAGERYPROCESSINGDEMAND,THEAUTOMOBLEELECTRONSYSTEMANDSOONTHEUSINGOFTHEDSPDOMAINISTOONUMEROUSTOCITEINDIVIDUALLYINTHETVCONFERENCESYSTEM,ALSOAPPLIESTHEDSPCOMPONENTMASSIVELYINTHESEEINGANDHEARINGMACHINEALSOAPPLIESTHEDSPALONGWITHSCIENCEANDTECHNOLOGYDEVELOPMENT,ITWILLPRESENTMANYTHEDSPNEWAPPLICATIONDOMAINTHEDSPDEVELOPMENTKITINCLUDESEACHKINDOFSIMULATIONSOFTWARE,THEHARDWARESIMULATOR,THEAPPRAISALBOARD,THEBEGINNERTOTESTTHESUITE,THETEACHINGSUITEANDSOONOVERSEASHASSOMEDSPCONSULTANTFIRMANDTHEWEBSITE,THEYHAVETHEDSPUSERANDTHEDSPCHIPSUPPLIER,BETWEENTHEDSPTHIRDPARTYBIDGEROLE,ALSOWILLPROVEDETHEDESIGNFORTHECUSTOMER,TOPROVIDETHESOFTWAREAANDTHEHARDWAREANDTHEPUBLICATIONMATERIALBOOKS,SOMEWILLALSOHAVETHETRAININGCLASSATHOMETHEREAREMANYDSPFORUMS,SOTHATTHEUSERCANCARRYONTHEDSPTHCHNOLOGYTOTHEEXCHANGEINFORMATIONWITHTHERAPIDGROWTHOFCHINASDSPMARKET,THEDSPAPPLICATIONINCHINAHASBEENMAINTAININGTHESAMETECHNOLOGYSYNCHRONIZATIONSITUATIONINTERNATIONALLYALONGWITHTHECHINESESOCIETYDIGITIZATION,THEINFORMATIONIZATIONPROGRESSANTINUEDWITHTHECHINESEECONOMYTOGRONSTABLYHASSTIMULATEDTHEFASTDEVELOPMENTOFMARKETANDTHELELCTRONICINFORMAIONINCLUSTRYANDPROMOTEDTHEDSPWIDESPREEDAPPLICATIONDSP的发展、现况及其应用数字信号处理(DIGITALSIGNALPROCESSING,简称DSP)是一门涉及许多学科而又广泛应用于许多领域的新兴学科。DSP有两种含义DIGITALSIGNALPROCESSING(数字信号处理)、DIGITALSIGNALPROCESSOR(数字信号处理器)。我们常说的DSP指的是数字信号处理器。数字信号处理器是一种适合完成数字信号处理运算的处理器。20世纪60年代以来,随着计算机和信息技术的飞速发展,数字信号处理技术应运而生并得到迅速的发展。在过去的二十多年时间里,数字信号处理已经在通信等领域得到极为广泛的应用。数字信号处理是利用计算机或专用处理设备,以数字形式对信号进行采集、变换、滤波、估值、增强、压缩、识别等处理,以得到符合人们需要的信号形式。数字信号处理是以众多学科为理论基础的,它所涉及的范围极其广泛。例如,在数学领域,微积分、概率统计、随机过程、数值分析等都是数字信号处理的基本工具,与网络理论、信号与系统、控制论、通信理论、故障诊断等也密切相关。近来新兴的一些学科,如人工智能、模式识别、神经网络等,都与数字信号处理密不可分。可以说,数字信号处理是把许多经典的理论体系作为自己的理论基础,同时又使自己成为一系列新兴学科的理论基础。DSP主要应用在数字信号处理中,目的是为了能够满足实时信号处理的要求,因此需要将数字信号处理中的常用运算执行的尽可能快,这就决定了DSP的特点和关键技术。适合数字信号处理的关键技术DSP包含乘法器、累加器、特殊地址发生器、领开销循环等;提高处理速度的关键技术流水线技术、并行处理技术、超常指令(VLIW)、超标量技术、DMA等。从广义上讲,DSP、微处理器和微控制器(单片机)等都属于处理器,可以说DSP是一种CPU。DSP和一般的CPU又不同,最大的区别在于CPU是冯诺伊曼结构的;DSP是数据和地址空间分开的哈佛结构。世界上第一个单片DSP芯片应当是1978年AMI公司发布的S2811,1979年美国INTEL公司发布的商用可编程器件2920是DSP芯片的一个主要里程碑。这两种芯片内部都没有现代DSP芯片所必须有的单周期乘法器。1980年,日本NEC公司推出的ΜPD7720是第一个具有乘法器的商用DSP芯片。在这之后,最成功的DSP芯片当数美国德州仪器公司(TEXASINSTRUMENTS,简称TI)的一系列产品。TI公司在1982年成功推出其第一代DSP芯片TMS32010及其系列产品TMS32011、TMS320C10/C14/C15/C16/C17等,之后相继推出了第二代DSP芯片TMS32020、TMS320C25/C26/C28,第三代DSP芯片TMS320C30/C31/C32,第四代DSP芯片TMS320C40/C44,第五代DSP芯片TMS320C5X/C54X,第二代DSP芯片的改进型TMS320C2XX,集多片DSP芯片于一体的高性能DSP芯片TMS320C8X以及目前速度最快的第六代DSP芯片

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