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1、英文文献DSPsBacktotheFuture[13]W.PatrickHaysPublishedonline：23June2004SpringerScience+BusinessMediaB.V.2004AbstractOurcomplexworldischaracterizedbyrepresentation,transmission,andstorageofinformation-andinformationismostlyprocessedindigitalform.WiththeadventofDSPs(digitalsignalprocessors),engin
2、eersareabletoimplementcomplexalgorithmswithrelativeease.TodaywefindDSPsallaroundus-incars,digitalcameras,MP3andDVDplayers,modems,andsoforth.TheirwidespreaduseanddeploymentincomplexsystemshastriggeredarevolutioninDSParchitectures,whichinturnhasenabledengineerstoimplementalgorithmsofever-inc
3、reasingcomplexity.ADSPprogrammertodaymustbeproficientinnotonlydigitalsignalprocessingbutalsocomputerarchitectureandsoftwareengineering.Keywords DSP；MotorcontrolsystemTheIntel2920includedon-chip(D/A)digital/analogandA/D(analog/digital)convertersbutlackedahardwaremultiplierandsoonfadedfromth
4、emarket.AnNECprojectresultedintheNECµPD7720—oneofthemostsuccessfulDSPsofalltime.TheBellLabsDSP-1andNECµPD7720wereannouncedatISSCC80.DSP-1,achieved5-MHzclockspeed，executing1.25-MBmultiply-accumulatespersecondatfourclockcycleseach—enoughtoallowTouch-Tonereceiverfilterstoexecuteinrealtime.The
5、onceformidableperformancedemandsoftheTouch-Tonereceiverarenowludicrouslyeasy,butnewapplicationsinturnarosethroughoutthelast20yearstoputnewdemandsonDSPtechnology(seefigure1).AccordingtoWillStrauss,presidentandprincipalanalystatForwardConcepts,“DSPshipmentswereupahealthy24percentin2003,andwe
6、areforecastingabithighergrowthfor2004,at25percent.Longerterm,weforecasta22.6percentcompoundgrowthratethrough2007.”Sothegamehasbeen:BoostDSPperformance,runthealgorithmatanacceptablecost,andopenupanewcommercialmarket.Itisperhapstooglibtoprojectthistrendindefinitelyintothefuture,Infact,savvya
7、nalystshaveperiodicallypredictedthedemiseoftheDSP.WillperformancerequirementsoutstriptheabilityofprogrammableDSParchitecturestokeepup,thusdemandinganewapproach?orifDSPsaretomaintaintheirhistoricalgrowthcurve，whatkindsoftoolsandarchitecturesareneeded?Ultimately
