自适应滤波器提取单频信号实验2
function adaptive_filter2(f1,Delta) length=2000; M=100; %滤波器的阶数M Ts=0.0001; A=2; B=4; f2=f1+Delta; % f2频率phase=0; S=randn(1,length); %高斯白噪声，方差为一，偏差为0k=1:length; F1=A*cos(2*pi*f1*k*Ts+phase); F2=B*cos(2*pi*f2*k*Ts); X=S+F1+F2;
