Question

Create a MATLAB function that takes as input a sequence x of arbitrary length and calculates N equally spaced frequency samples of its DTFT. The first line of your function should be function X=dtft(x,N) Be sure that your function works properly for both the case when $N \ge M$, and $N < M$. You should use exactly one call to the MATLAB function fft for each input x.

          Create a MATLAB function that takes as input a sequence x of arbitrary length and
calculates N equally spaced frequency samples of its DTFT. The first line of your
function should be
function X=dtft(x,N)
Be sure that your function works properly for both the case when $N \ge M$, and
$N < M$. You should use exactly one call to the MATLAB function fft for each input
x.

Create a MATLAB function that takes as input a sequence x of arbitrary length and
calculates N equally spaced frequency samples of its DTFT. The first line of your
function should be
function X=dtft(x,N)
Be sure that your function works properly for both the case when N ≥ M, and
N < M. You should use exactly one call to the MATLAB function fft for each input
x.

Added by Alicia G.

Computer Science and Information Technology

Trishna Knowledge Systems 2018 Edition

Instant Answer

Solved by Expert Gokul R Nair

Step 1

First, we need to calculate the length of the input sequence x. We can do this using the MATLAB function `length(x)`. Let's store this value in a variable called M. Show more…

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Create a MATLAB function that takes as input a sequence x of arbitrary length and calculates N equally spaced frequency samples of its DTFT. The first line of your function should be: function X_dtft(x, N) Be sure that your function works properly for both the case when N > M and N < M. You should use exactly one call to the MATLAB function fft for each input X.