printf.m

matlab的滤波器

function printf(j,k,N,l,m)
figure(1);
subplot(2,2,1)
n=0:N-1;
stem(n,j,'.');
hold on; 
xlabel('n');
ylabel('x(n)');
subplot(2,2,3);
n=0:N-1;
stem(n,k,'.');
xlabel('K');
ylabel('|X(k)|');
figure(2);
freqz(l,m);