Matlab function to find and plot the dft, MATLAB Programming

Assignment Help:

It is desired to determine the DFT of the analogue signal x (t) = 25 cos(10 Πt)cos(400Πt).

(a) Find the Nyquist rate of the signal.  

(b) What is the record (signal) length if the desired frequency resolution is 5Hz?

(c)  If the Nyquist rate from part (a) and the record length found in part (b) are used, find the number of points that will be contained in the DFT. 

(d) Use the MATLAB function fft to find and plot the DFT X (k). Add the frequency scale (in hertz) to the diagram.

(e)  If the sampling frequency is doubled, How is X (k) changed?


Related Discussions:- Matlab function to find and plot the dft

variable names, Variable names: Variable names are an example of the ...

Variable names: Variable names are an example of the identifier names. The rules for identifier names are as shown below: (A)The name should begin with a letter of the alph

1, #quest121ion..

#quest121ion..

Format function and ellipsis, The Format Function and ellipsis: The de...

The Format Function and ellipsis: The default in MATLAB is to show numbers which have decimal places with four decimal places. The format command can be used to identify the o

Type logical , Type logical: The type logical is used to store the tru...

Type logical: The type logical is used to store the true/false values. If any variables have been formed in the Command Window, they can be seen at the Workspace Window. In

User-defined function, Your functions will allow you to create the followin...

Your functions will allow you to create the following graph, which contains a piecewise function where a line exists in the first interval, a parabola in the second interval, and t

Lab 2, You">http://www.cs.utsa.edu/~cs1173/labs/laboratory2.html You can g...

You">http://www.cs.utsa.edu/~cs1173/labs/laboratory2.html You can go to this link and it should come up I need this by tommorow at 10:00 I just need the published part where you r

Alex Takahashi, I need assistance in learning on how to do simulation of sy...

I need assistance in learning on how to do simulation of system described with an algebraic equations.

Fourier series for the sawtooth wave, Q. An expression for a sawtooth wave ...

Q. An expression for a sawtooth wave over the internal 0 ≤ t ≤ T0 is given by f(t) = At/T0. The student is encouraged to check the Fourier coefficients to be a 0 = A/2, an = 0 for

Write a for loop to perform elementary row operations, Use Matlab to solve ...

Use Matlab to solve the following set of linear equations by Gaussian Elimination. Write a for loop to perform elementary row operations on the augmented matrix to produce

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd