time_phase_impul.m

经典《信号与系统》教程的matlab例程,对深入理解信号与系统相关概念有很大帮助

%==========================================================================
%  Name：time_phase_impul.m
%==========================================================================
clear;close all,
t=-10:0.01:10;
w=-10:0.05:10;
phi1=-4*w;
phi2=0;
H1=exp(j*phi1).*(u(w+5)-u(w-5));
h1=H1*exp(j*w'*t)*0.05/(2*pi); 
H2=exp(j*phi2).*(u(w+5)-u(w-5));
h2=H2*exp(j*w'*t)*0.05/(2*pi);
subplot(211);plot(t,h1,'r');grid on;title('The impulse response h(t)');
subplot(212);plot(t,h2,'r');grid on;title('The impulse response h(t)');
xlabel('Time t');