%从db2小波开始，得到%对应的提升方案。LS=liftwave（'db2'）LS='d'[-1.7321][0]'p'[1x2 double][1]'d'[1][1.9319][0.5176][%可视化得到的提升方案。显示（LS）；LS={…'d'[-1.73205081][0.06698730 0.43301270][1]'d'[1.00000000][1.93185165][0.51763809][1]}；%从提升方案获取筛选器。[LoD，HiD，LoR，HiR]=ls2filt（LS）LoD=-0.1294 0.2241 0.8365 0.4830 HiD=-0.4830 0.8365-0.2241-0.1294 LoR=0.4830 0.8365 0.2241-0.1294 HiR=-0.1294-0.2241 0.8365-0.4830%使用wfilters获取db2筛选器。%n您可以检查相等性。[LoDref=-0.12940.22410.8365 0.4830 HiDref=-0.4830 0.8365-0.2241-0.1294 LoRref=0.4830 0.8365 0.2241-0.1294 HiRref=-0.1294-0.2241 0.8365-0.4830