How do I calculate the impulse response?
14 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
dhanshri kulkarni
el 26 de Feb. de 2015
Respondida: Altanshagai
el 10 de Mzo. de 2023
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]
0 comentarios
Respuesta aceptada
michael scheinfeild
el 26 de Feb. de 2015
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))
1 comentario
Jens Kritian Poulsen
el 2 de Mzo. de 2021
Editada: Jens Kritian Poulsen
el 2 de Mzo. de 2021
There are errors in the solution shown by Michael Scheinfeild, e.g. last line and it doesn't calculate the impulse response.
The solution by John D'Errico is okay (albeit a bit short)
The problem by itself is so simple you don't really need Matlab ([1 1 1] is the impulse response).
Más respuestas (3)
John D'Errico
el 26 de Feb. de 2015
Use filter, or conv. WTP?
Compute the vector x, then get y from x.
y = conv(x,[1 1 1]);
and if x was [0 0 1 0 0], then what would y be from the above call to conv?
0 comentarios
MathWorks Support Team
el 22 de Mayo de 2019
To compute a 3 tap FIR filter impulse response, use “fft” with the corresponding coefficients. In this case,
>> fft([1 1 1])
Depending on the frequency resolution that you need, you will also have to specify the length of the transformation.
0 comentarios
Ver también
Categorías
Más información sobre Filter Analysis en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!