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

Generate a matlab error with a descriptive error message, Write a function ...

Write a function called threshold2 (in a file called 'threshold2.m'). The function takes an arbitrary number of input variables. The first input variable, t, is required and is the

Robot, How to simulate a robot

How to simulate a robot

Calculate three natural frequencies of the system, A three degree of freedo...

A three degree of freedom system is shown in Figure.  The three masses are each 1 kg and are constrained to move in the directions shown.   The three stiffnesses are   5 kN/m, 50 k

Looping statements, Looping Statements: Consider the problem of comput...

Looping Statements: Consider the problem of computing the area of a circle with radius of 0.3 centimeters-a MATLAB program certainly is not required to do that; you would use

Excel, Ask question Excel Ch 1.A-Grader Project-Training Workshops 1.5#Mini...

Ask question Excel Ch 1.A-Grader Project-Training Workshops 1.5#Minimum 100 words accepted#

Linspace function, Linspace function: Likewise, the linspace function ...

Linspace function: Likewise, the linspace function generates a linearly spaced vector; linspace(x,y,n) generates a vector with n values in the inclusive range from x to y. For

Documentation - script, Documentation: It is very important that all t...

Documentation: It is very important that all the scripts be documented well, so that the people can understand what the script does and how it accomplishes that. One way of do

Video compression, please tell me how to compress a video in matlab

please tell me how to compress a video in matlab

Model of a column loudspeaker system, Use an expression for the far-field r...

Use an expression for the far-field radiation from a plane circular piston to create a more accurate model of a column loudspeaker system - you will need to calculate individual so

Program that perform k nearest neighbours algorithm, 1) Convert the table i...

1) Convert the table into format convenient for the processing with MATLAB. 2) Prepare a program that perform K Nearest Neighbours algorithm using Euclidian distance. (Your prog

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