知道网课智慧《数字信号处理（英文）-需手动修改》测试答案

第一章单元测试1.【多选题】正确答案：ACDPrerequisitesofthiscourseinclude:（）A.SignalsandSystemsB.PaintingC.ComplexVariablesD.Calculus2【判断题】Ifyoumeasureandrecordyourweighteveryday,thatisadigitalsignal.（）A.对B.错3.【多选题】正确答案：ABCDWhataretheadvantagesofdigitalsignalprocessing:（）A.EasytoimplementbyVLSIB.ReliableandaccurateC.PopularityofdigitaldevicesD.Flexibleandprogrammable4【判断题】Digitalsignalprocessingissomethingnewanddoesnothavealongandrichhistory.（）A.对B.错5【判断题】Aspeechsignalaswellasadigitalimagearetypicallyin1D.（）A.错B.对第二章单元测试1【判断题】IfanLTIsystemhasanimpulseresponsewithfinitesampleA.错B.对2【判断题】IfanLTIsystemhasanimpulseresponsewithfinitesampleA.错B.对3【单选题】(2分)GivenaSinusoidalsequence<imgsrc="/zhs/onlineexam/ansewerImg/202311/3017206d38d840d68fc52f825ad82c5f.png"width="45.33333333333333.Whichofthefollowingisitsperiod?（）A.NoperiodB.4C.8D.164【单选题】(2分)Convolutionsumisusefulforcomputationoftheoutputifthesystemis（）。A.linear&timeInvariantB.timeinvariantC.stableD.linear5【单选题】(2分)IfthesequenceisoflengthLandtheimpulseresponseofanLTIsystemisoflengthP.Whatwillbethelengthaftertheirconvolution?（）A.PB.L+P-1C.L+PD.L第三章单元测试1.【多选题】正确答案：ABTheFouriertransformofanaperiodicsequenceis（）A.PeriodicB.ContinuousC.AperiodicD.Discrete2【单选题】(2分)TheeigenfunctionofanLTIsystemisthe（）A.unitstepsequenceB.realexponentialsequenceC.complexexponentialsequenceD.sinusoidalsequence3【单选题】(2分)WhichofthefollowingisthecorrectformulaforDTFT?（）A.<imgsrc="/zhs/onlineexam/ansewerImg/202311/fbdf5537cde4486894d04792148d655b.png"width="140B.<imgsrc="/zhs/onlineexam/ansewerImg/202311/6bbe7873049f4e86bd7f8b13260355a7.png"width="145.33333333333331C.<imgsrc="/zhs/onlineexam/ansewerImg/202311/fde7a93c3b2642428613d1c934d42bf9.png"width="140D.<imgsrc="/zhs/onlineexam/ansewerImg/202311/42e67c1672d14d1188e47415a16f77b5.png"width="145.333333333333314.【多选题】正确答案：BDWhichofthefollowingis/arecorrespondingtoalowfrequency?（）A.<imgsrc="/zhs/onlineexam/ansewerImg/202311/3495e0fa58db48ea9ab5f4dae61a692c.png"width="33.266666666666666B.<imgsrc="/zhs/onlineexam/ansewerImg/202311/e415ad6ce2dc4cbfbd6ca2d6b2ae9b4a.png"width="14.666666666666666C.0D.<imgsrc="/zhs/onlineexam/ansewerImg/202311/4e995197b270481486776baa231f0db3.png"width="245【单选题】(2分)TheDTFTof<imgsrc="/zhs/onlineexam/ansewerImg/202311/4e9acddcf8894b1b92e32debef04d773.png"width="32is（）A.0B.<imgsrc="/zhs/onlineexam/ansewerImg/202311/3932ba019f0b4e77aae8f902894ac7f6.png"width="32C.1D.<imgsrc="/zhs/onlineexam/ansewerImg/202311/824e67fca85e48c19273a2af05e516ff.png"width="32第四章单元测试1.【多选题】正确答案：BCDThisisthezero-poleplotofanLTIsystemonthez-plane.Itcanbe:（）<imgsrc="/zhs/question-import/formula/202311/32c24e5e96ff4532aa9f7dda97332f22.pngA.CausalandstableB.NotcausalandnotstableC.CausalbutnotstableD.Notcausalbutstable2【单选题】(2分)Whichofthefollowingstatementistrue?（）A.AncausalsystemhasitsFouriertransformB.Ifasequencehasz-transform,ithasFouriertransformC.AstablesystemhasitsFouriertransformD.AnysequencehasitsFouriertransform3【单选题】(2分)ForanFIRsystem,it’sROCofz-transformis（）A.InaringregiondeterminedbytwopolesB.InsideacircledeterminedbytheinnermostpoleC.OutsideacircledeterminedbytheoutmostpoleD.Theentirez-planeexceptfor0orinfinity4【单选题】(2分)SupposewehaveanLTIsystem,anditsinputisanimpulsesequence.Whatarethenamefortheoutputanditsz-transform?（）A.impulseinvarianceandfrequencyresponseB.impulseresponseandsystemfunctionC.impulseinvarianceandsystemfunctionD.impulseresponseandfrequencyresponse5【单选题】(2分)Given<imgsrc="/zhs/onlineexam/ansewerImg/202311/668ac2493f814b5f86824df8a7745135.png"width="117.33333333333333withtheROC<imgsrc="/zhs/onlineexam/ansewerImg/202311/fe72664baf104b02b608665bf5cf23b4.png"width="46.666666666666664,itscorrespondingsequence<imgsrc="/zhs/onlineexam/ansewerImg/202311/317269ee38ee46b29cc6e64fbcfc3d72.png"width="30.666666666666664shouldbe（）A.<imgsrc="/zhs/onlineexam/ansewerImg/202311/296c0559318745618da0571c5aaf7d13.png"width="73.33333333333333B.<imgsrc="/zhs/onlineexam/ansewerImg/202311/54a0dd7c8a9d4c40bebb3aabbd99cf07.png"width="45.33333333333333C.<imgsrc="/zhs/onlineexam/ansewerImg/202311/f6c13d9db05040efb5f2414e101edb6c.png"width="82.66666666666666D.<imgsrc="/zhs/onlineexam/ansewerImg/202311/343fe1a5e97a463f9835386eb647e33e.png"width="54.666666666666664第五章单元测试1【单选题】(2分)<imgsrc="/zhs/onlineexam/ansewerImg/202311/2583ec6bccef45e3be397eb4f4d5bf54.png"width="38.666666666666664（）A.1B.NC.-1D.02【单选题】(2分)<imgsrc="/zhs/onlineexam/ansewerImg/202311/e581b1dda62340789c2c406f5f60b678.png"width="41.33333333333333（）A.NB.1C.-1D.03【单选题】(2分)<imgsrc="/zhs/onlineexam/ansewerImg/202311/0826719cd5e4436d8600663d50f25996.png"width="50.666666666666664（）A.1B.0C.ND.-14【判断题】<imgsrc="/zhs/onlineexam/ansewerImg/202311/8253a860b6b348c398f74f8d783a2755.png"width="69.33333333333333（）A.错B.对5【判断题】DFSisperiodic.（）A.错B.对第六章单元测试1.【多选题】正确答案：ACWhichofthefollowingshouldhaveduality?（）A.DFTB.ztransformC.DFSD.Fouriertransform2【单选题】(2分)TherearetwosignalswithlengthN1andN2,respectively.IfwewishtofindouttheirlinearconvolutionthroughM-pointDFT,whichofthefollowingMcanbeapplied?（）A.max(N1,N2)B.N1orN2C.N1+N2D.min(N1,N2)3.【多选题】正确答案：ACIfthereisamodulewhichcanfindouttheoutputofanLTIsystemusingDFT,whichofthefollowingstatementis/aretrue?（）A.Theinputsignalofthesystemshouldbefiniteinlength.B.Theinputsignalofthesystemshouldbeperiodic.C.TheLTIsystemshouldbeFIR.D.TheLTIsystemshouldbeIIR.4【判断题】DFTis,inessence,periodicastheDFS,sinceitcorrespondstosamplingtheFouriertransform.IndefiningtheDFTrepresentation,wearesimplyrecognizingthatweareinterestedintheA.错B.对5【判断题】<imgsrc="/zhs/onlineexam/ansewerImg/202311/f8dbaeec58eb4917ad752860606840de.png"width="173.33333333333331.（）A.对B.错第七章单元测试1【单选题】(2分)Whatistheorderofcomputationalcomplexityfor16-pointDFTinit'sdirectcomputation?（）A.64B.128C.256D.162【单选题】(2分)Whatistheorderofcomputationalcomplexityfor16-pointDFTinit'sFFTcomputation?（）A.16B.64C.256D.1283.【多选题】正确答案：BDWhatarethemajortwotypesofFFTcomputation?（）A.DFSB.DIFC.DFTD.DIT4【单选题】(2分)WhatistheorderofinputsequenceforDIT-FFT?（）A.ReverseB.RandomC.Bit-reversedD.Sequential5【单选题】(2分)WhatistheorderofoutputsequenceforDIF-FFT?（）A.ReverseB.Bit-reversedC.SequentialD.Random第八章单元测试1【单选题】(2分)Inapracticalsystem,thereisananti-aliasingfilterbeforeA/Dconverter.Suchafiltershouldbe:（）A.bandpassB.bandstopC.lowpassD.highpass2【判断题】InC/Dconverter,theinputsignaliscontinuousanditwillbesampled.Astheresult,theoutputsignalisdigital.（）A.对B.错3【单选题】(2分)Ifwewishtorecoveracontinuoussignalfromitssamples,whatkindoffiltershallweuse,ideally?（）A.lowpassB.bandstopC.bandpassD.highpass4【单选题】(2分)Statistically,thevarianceofthequantizationerrorcanbedescribedusingthequantizationstep<imgsrc="/zhs/onlineexam/ansewerImg/202311/5b77d275437e4b5a850365bf0ae99f86.png"width="14.666666666666666as:（）A.<imgsrc="/zhs/onlineexam/ansewerImg/202311/a314e6e38ec9422d958cf5d1ea21f5fd.png"width="33.266666666666666B.<imgsrc="/zhs/onlineexam/ansewerImg/202311/871e3b9722204172ac520f068b286fff.png"width="46.666666666666664C.<imgsrc="/zhs/onlineexam/ansewerImg/202311/a3c3f0f79f564cbda82d9198503c88f1.png"width="20D.05【单选题】(2分)Statistically,themeanofthequantizationerrorcanbedescribedusingthequantizationstep<imgsrc="/zhs/onlineexam/ansewerImg/202311/b9163a897c884b449c1ec2940ecb4cc3.png"width="14.666666666666666as:（）A.<imgsrc="/zhs/onlineexam/ansewerImg/202311/a0336f2945694d4c909369a4d98b27f3.png"width="20B.0C.<imgsrc="/zhs/onlineexam/ansewerImg/202311/ba864e3108a54eeba3b0fdf0c9fb784d.png"width="46.666666666666664D.<imgsrc="/zhs/onlineexam/ansewerImg/202311/21c75755f6f94b73b5b3bf645080ec8e.png"width="33.266666666666666第九章单元测试1【单选题】(2分)Giventhesystemfunctionof<imgsrc="/zhs/onlineexam/ansewerImg/202311/45e57cc972cd4994a159ea13988349f6.png"width="129.26666666666665,wecanconcludethat（）A.ThissystemisFIRB.ThissystemisIIRC.ItisbothIIRandFIRD.WhetherthissystemisIIRorFIRisnotsure2【单选题】(2分)Giventhesystemfunctionof<imgsrc="/zhs/onlineexam/ansewerImg/202311/83e20ea37fe84771b58f420b61c44b63.png"width="125.33333333333333,wecanconcludethat（）A.ThissystemisIIRB.ThissystemisFIRC.ItisbothIIRandFIRD.WhetherthissystemisIIRorFIRisnotsure3.【多选题】正确答案：ADEWhichofthefollowingsystemsis/areIIR?（）<imgsrc="/zhs/question-import/formula/202311/e2131da98c1c41f59e51fa497c97d971.pngA.AB.DC.ED.FE.CF.B4.【多选题】正确答案：ACDEFWhichofthefollowingcausalsystemsis/arestable?（）<imgsrc="/zhs/question-import/formula/202311/e712d91db6b14d67b848898ae42efb3b.pngA.CB.DC.AD.FE.EF.B5.【多选题】正确答案：BDThefollowingsystemis<imgsrc="/zhs/question-import/formula/202311/13af40164e15438bb35adbd12b3797f8.png（）A.IIRB.linearphaseC.nonlinearphaseD.FIR第十章单元测试1【单选题】(2分)Thefollowingsystemis（）<imgsrc="/zhs/question-import/formula/202311/f8f82dc3d34947d5a79f0a2d3d86877f.pngA.anIIRlowpassfilterB.anFIR