exa1_7.m

matlab应用实例。如：FIR、IIR数字滤波器设计等。

% exa1-7_slope_fun_c.m for example 1-7
% slope function

clear all;
t=0:0.001:3;
B=3;
t0=1;
u=stepfun(t,t0);
n=length(t);
for i=1:n
   u(i)=B*u(i)*(t(i)-t0);
end
plot(t,u)
axis([-0.2 3.1 -0.2 6.2])