我修改我的代码:
ISNR = 15;
S =负载(“data.mat”);
日元= S.sig209;
nsig = awgn (y1, ISNR);
sig1 = y₁+ nsig;
OPsig = wden (sig1,“rigrsure”,“年代”,“sln”6“sym7”);
(CA、CD) = wavedec (OPsig 6“sym7”);
一个= CA;
P = thselect (CA,“rigrsure”);
CA = wthresh(钙、“h”,P);
AA = CA;
学会= waverec (CA, CD,“sym7”);
但结果仍有一些噪音