數(shù)字電視小龍實驗報告

北京聯(lián)合大學(xué)信息學(xué)院數(shù)字電視實驗報告專業(yè)：電子信息工程班級：姓名：學(xué)號：教師：時間：2011年05月27日實驗一:離散余弦變換源代碼>>a=[139144149153155155155155;144151153156159156156156;150155160163158156156156;159161162160160159159159;159160161162162155155155;161161161161160157157157;162162161163162157157157;162162161161163158158158]a=139144149153155155155155144151153156159156156156150155160163158156156156159161162160160159159159159160161162162155155155161161161161160157157157162162161163162157157157162162161161163158158158>>b=a-128b=11162125272727271623252831282828222732353028282831333432323131313132333434272727333333333229292934343335342929293434333335303030>>i=0:7i=01234567>>j=i;>>j=i'j=01234567>>c=cos(i*(2*j+1)*pi/16)/2c=0.35350.35350.35350.35350.35350.35350.35350.35350.49040.41570.27780.0975-0.0975-0.2778-0.4157-0.49040.46190.1913-0.1913-0.4619-0.4619-0.19130.19130.46190.4157-0.0975-0.4904-0.27780.27780.49040.0975-0.41570.3536-0.3536-0.35360.35360.3536-0.3536-0.35360.35360.2778-0.49040.09750.4157-0.4157-0.09750.4904-0.27780.1913-0.46190.4619-0.1913-0.19130.4619-0.46190.19130.0975-0.27780.4157-0.49040.4904-0.41570.2778-0.0975>>ct=c'ct=0.35350.49040.46190.41570.35360.27780.19130.09750.35350.41570.1913-0.0975-0.3536-0.4904-0.4619-0.27780.35350.2778-0.1913-0.4904-0.35360.09750.46190.41570.35350.0975-0.4619-0.27780.35360.4157-0.1913-0.49040.3535-0.0975-0.46190.27780.3536-0.4157-0.19130.49040.3535-0.2778-0.19130.4904-0.3536-0.09750.4619-0.41570.3535-0.41570.19130.0975-0.35360.4904-0.46190.27780.3535-0.49040.4619-0.41570.3536-0.27780.1913-0.0975>>y=c*b*cty=235.5538-1.0332-12.0791-5.20212.1247-1.6722-2.70761.3236-22.5870-17.4842-6.2405-3.1574-2.8557-0.06950.4342-1.1856-10.9476-9.2624-1.57581.53010.2029-0.9419-0.5669-0.0629-7.0805-1.90720.22481.45390.8963-0.0799-0.04230.3315-0.6249-0.83811.46991.5563-0.1250-0.66100.60881.27521.7538-0.20291.6205-0.3424-0.77551.47591.0410-0.9930-1.2823-0.3600-0.3169-1.4601-0.49001.73481.0758-0.7613-2.59951.5519-3.7628-1.84481.87161.2139-0.5679-0.4456>>f=y./qf=14.7221-0.0939-1.2079-0.32510.0885-0.0418-0.05310.0217-1.8823-1.4570-0.4457-0.1662-0.1098-0.00120.0072-0.0216-0.7820-0.7125-0.09850.06380.0051-0.0165-0.0082-0.0011-0.5057-0.11220.01020.05010.0176-0.0009-0.00050.0053-0.0347-0.03810.03970.0278-0.0018-0.00610.00590.01660.0731-0.00580.0295-0.0054-0.00960.01420.0092-0.0108-0.0262-0.0056-0.0041-0.0168-0.00480.01430.0090-0.0075-0.03610.0169-0.0396-0.01880.01670.0121-0.0055-0.0045>>Y1=round(f)Y1=150-100000-2-1000000-1-1000000-1000000000000000000000000000000000000000>>flh=Y1.*qflh=2400-1000000-24-12000000-14-13000000-14000000000000000000000000000000000000000>>X=ct*flh*cX=14.023115.867418.860421.960024.279625.466125.753525.684620.700422.215124.599226.903328.361928.752828.431428.033028.960329.980031.449532.558632.723631.919530.683429.790033.562234.157834.843734.928833.985632.157730.137928.820433.615934.036734.399634.062832.662930.413028.070326.578032.089232.611233.161033.068431.932829.927127.771326.380231.682032.451833.459633.965333.477332.069930.372029.228732.230733.196334.565735.544035.567534.632633.296532.3489>>X=X+128X=142.0231143.8674146.8604149.9600152.2796153.4661153.7535153.6846148.7004150.2151152.5992154.9033156.3619156.7528156.4314156.0330156.9603157.9800159.4495160.5586160.7236159.9195158.6834157.7900161.5622162.1578162.8437162.9288161.9856160.1577158.1379156.8204161.6159162.0367162.3996162.0628160.6629158.4130156.0703154.5780160.0892160.6112161.1610161.0684159.9328157.9271155.7713154.3802159.6820160.4518161.4596161.9653161.4773160.0699158.3720157.2287160.2307161.1963162.5657163.5440163.5675162.6326161.2965160.3489>>bfb=abs(X-a)./abfb=0.02170.00090.01440.01990.01760.00990.00800.00850.03260.00520.00260.00700.01660.00480.00280.00020.04640.01920.00340.01500.01720.02510.01720.01150.01610.00720.00520.01830.01240.00730.00540.01370.01650.01270.00870.00040.00830.02200.00690.00270.00570.00240.00100.00040.00040.00590.00780.01670.01430.00960.00290.00630.00320.01960.00870.00150.01090.00500.0097