How do I calculate the impulse response?

K
kulkarni · Dec 6, 2021 · 2.1K views
Question
How do I write the code in order to get the impluse response for the following equation:   y[n]=x[n]+x[n-1]+x[n-2]
Expert Answer
Profile picture of Neeta Dsouza
Neeta Dsouza PhD Expert
Answered Aug 24, 2026

TRY THIS:

f=100;% frequanecy
fs=1000;
n=[1:1000]*f/fs;
u=ones(n,1)
x(n)=2*cos(0.5*pi*n).u(n);
% ~ (check indexes im not sure ..)
y(n)=x(n(3:1000))+x(n(2:999))+x((1:998))
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