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

Plot the pressure for oxygen and nitrogen, Non-Ideal Gas (van der Waals equ...

Non-Ideal Gas (van der Waals equation):  An equation of state for a non-ideal which is commonly used is the van der Waals equation for 1 mol of gas  P = (R*T)/(V-b) - a/(V^2)

String manipulation, String Manipulation: The string in MATLAB softwar...

String Manipulation: The string in MATLAB software consists of any number of characters and is contained in the single quotes. Actually, strings are considered as vectors in w

Identify an equation that describes some chemical process, 1) Identify an e...

1) Identify an equation that describes some chemical process.  Your equation should have at least two parameters, at least one of which should contribute in a non-linear way. He

Variable number of input arguments - function, Variable number of input arg...

Variable number of input arguments: For illustration, the below function areafori has a variable number of input arguments, either the 1 or 2. The name of the function stands

National log, how to write the national log (ln(x)) in matlap ?

how to write the national log (ln(x)) in matlap ?

Order of precedence - operator, Order of precedence: As with the numer...

Order of precedence: As with the numerical operators, it is significant to know that the operator precedence rules. Table below shows the rules for the operators which  have b

Obtain the input - algorithms, Obtain the input - Algorithms: From whe...

Obtain the input - Algorithms: From where does the input come? The two possible choices would be from an external file on a disk, or from the user, who enters the number by ty

2 dimensional finite element analysis, i need matlab code on 2 dimensional...

i need matlab code on 2 dimensional analysis of temperature distribution in steel using finite element method

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