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; %采样间隔
A=1;        %幅值
B=2; 

f2=f1+Delta; % f2频率
phase=pi/4; 
noise=randn(1,length); %高斯白噪声，方差为1，偏差为0
k=1:length; 

F1=A*cos(2*pi*f1*k*Ts+phase); 
F2=B*cos(2*pi*f2*k*Ts);
F&#