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1、附录A英文文献DSPsBacktotheFuture[13]W.PatrickHaysPublishedonline：23June2004SpringerScience+BusinessMediaB.V.2004AbstractOurcomplexworldischaracterizedbyrepresentation,transmission,andstorageofinformation-andinformationismostlyprocessedindigitalform.WiththeadventofDSPs(digitalsignalprocessors
2、),engineersareabletoimplementcomplexalgorithmswithrelativeease.TodaywefindDSPsallaroundus-incars,digitalcameras,MP3andDVDplayers,modems,andsoforth.TheirwidespreaduseanddeploymentincomplexsystemshastriggeredarevolutioninDSParchitectures,whichinturnhasenabledengineerstoimplementalgorithm
3、sofever-increasingcomplexity.ADSPprogrammertodaymustbeproficientinnotonlydigitalsignalprocessingbutalsocomputerarchitectureandsoftwareengineering.Keywords DSP；MotorcontrolsystemTheIntel2920includedon-chip(D/A)digital/analogandA/D(analog/digital)convertersbutlackedahardwaremultiplierand
4、soonfadedfromthemarket.AnNECprojectresultedintheNECµPD7720—oneofthemostsuccessfulDSPsofalltime.TheBellLabsDSP-1andNECµPD7720wereannouncedatISSCC80.DSP-1,achieved5-MHzclockspeed，executing1.25-MBmultiply-accumulatespersecondatfourclockcycleseach—enoughtoallowTouch-Tonereceiverfilterstoex
5、ecuteinrealtime.TheonceformidableperformancedemandsoftheTouch-Tonereceiverarenowludicrouslyeasy,butnewapplicationsinturnarosethroughoutthelast20yearstoputnewdemandsonDSPtechnology(seefigure1).AccordingtoWillStrauss,presidentandprincipalanalystatForwardConcepts,“DSPshipmentswereupahealt
6、hy24percentin2003,andweareforecastingabithighergrowthfor2004,at25percent.Longerterm,weforecasta22.6percentcompoundgrowthratethrough2007.”Sothegamehasbeen:BoostDSPperformance,runthealgorithmatanacceptablecost,andopenupanewcommercialmarket.Itisperhapstooglibtoprojectthistrendindefinitely
7、intothefuture,Infact,savvyanalystshaveperiodicallypredictedthedemiseoftheDSP.WillperformancerequirementsoutstriptheabilityofprogrammableDSParchitecturestokeepup,thusdemandinganewapproach?orifDSPsaretomaintaintheirhistoricalgrowthcurve，whatkindsoftoolsandarchitecturesareneeded?Ultimat
