exa1_15.m

matlab应用实例。如：FIR、IIR数字滤波器设计等。

% exa1-15_slope_d.m for example 1-15
% slope sequence

clear all;
N=32;
k=4;
B=3;
x=[zeros(1,k) ones(1,N-k)];
for i=1:N
    x(i)=B*x(i)*(i-k);
end
xn=0:N-1;
stem(xn,x)
axis([-1 32 0 90])