p2_5.m

该程序用于讨论各种离散时间信号和系统的性质及特性。

% Program P2_5 modified
% Compute the impulse response y
clf;
N = 40;
x = ones(1,41);
num = [0.9 -0.45 0.35 0.002];
den = [1 0.71 -0.46 -0.62];
y = filter(num,den,x);
% Plot the impulse response
stem(y);
xlabel('Time index n'); ylabel('Amplitude');
title('Impulse Response'); grid;