从Haar小波出发，得到相应的提升方案。lshaar = liftwave(“哈尔”);在提升方案中增加一个原始ELS。Els = {'p'，[-0.125 0.125]，0};lsnew = addlift (lshaar els);%在一个简单信号的2级执行LWT。x = 1:8;xDec = lwt(x,lsnew,2) xDec = 4.3438 0.7071 2.1250 0.7071 13.0313 0.7071 2.0000 0.7071 %提取一级近似系数。ca1 = lwtcoef('ca'，xDec,lsnew,2,1) ca1 = 1.9445 4.9497 7.7782 10.6066%a1 = lwtcoef (a, xDec lsnew 2, 1) a1 = 1.3750 1.3750 3.5000 3.5000 5.5000 5.5000 7.5000 7.5000 a2 = lwtcoef (a, xDec lsnew 2, 2) a2 = 2.1719 2.1719 2.1719 2.1719 6.5156 6.5156 6.5156 6.5156 d1 = lwtcoef(‘d’,xDec lsnew 2, 1) d1 = -0.3750 0.6250 -0.5000 0.5000 -0.5000 0.5000 -0.5000 0.5000 d2 = lwtcoef(‘d’,xDec lsnew 2, 2) d2 = -0.7969 -0.7969 1.3281 1.3281 -1.0156 -1.0156 0.9844 0.9844 % Check perfect reconstruction. err = max(abs(x-a2-d2-d1)) err = 9.9920e-016