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1、英文文献DSPsBacktotheFuture[13]W.PatrickHaysPublishedonline：23June2004SpringerScience+BusinessMediaB.V.2004AbstractOurcomplexworldischaracterizedbyrepresentation,transmission,andstorageofinformation-andinformationismostlyprocessedindigitalform.WiththeadventofDSPs(digitalsignalproce
2、ssors),engineersareabletoimplementcomplexalgorithmswithrelativeease.TodaywefindDSPsallaroundus-incars,digitalcameras,MP3andDVDplayers,modems,andsoforth.TheirwidespreaduseanddeploymentincomplexsystemshastriggeredarevolutioninDSParchitectures,whichinturnhasenabledengineerstoimple
3、mentalgorithmsofever-increasingcomplexity.ADSPprogrammertodaymustbeproficientinnotonlydigitalsignalprocessingbutalsocomputerarchitectureandsoftwareengineering.Keywords DSP；MotorcontrolsystemTheIntel2920includedon-chip(D/A)digital/analogandA/D(analog/digital)convertersbutlackeda
4、hardwaremultiplierandsoonfadedfromthemarket.AnNECprojectresultedintheNECµPD7720—oneofthemostsuccessfulDSPsofalltime.TheBellLabsDSP-1andNECµPD7720wereannouncedatISSCC80.DSP-1,achieved5-MHzclockspeed，executing1.25-MBmultiply-accumulatespersecondatfourclockcycleseach—enoughtoallow
5、Touch-Tonereceiverfilterstoexecuteinrealtime.TheonceformidableperformancedemandsoftheTouch-Tonereceiverarenowludicrouslyeasy,butnewapplicationsinturnarosethroughoutthelast20yearstoputnewdemandsonDSPtechnology(seefigure1).AccordingtoWillStrauss,presidentandprincipalanalystatForw
6、ardConcepts,“DSPshipmentswereupahealthy24percentin2003,andweareforecastingabithighergrowthfor2004,at25percent.Longerterm,weforecasta22.6percentcompoundgrowthratethrough2007.”Sothegamehasbeen:BoostDSPperformance,runthealgorithmatanacceptablecost,andopenupanewcommercialmarket.Iti
7、sperhapstooglibtoprojectthistrendindefinitelyintothefuture,Infact,savvyanalystshaveperiodicallypredictedthedemiseoftheDSP.WillperformancerequirementsoutstriptheabilityofprogrammableDSParchitecturestokeepup,thusdemandinganewapproach?orifDSPsaretomaintaintheirhistoricalgrowthcurv
8、e，whatkindsoftoolsandarchitecturesareneeded?Ultimately
