Assignment 5
ENGI 7824 Discrete-Time Systems and Signals
Assignment 5
Assigned: 13 July 2004
Due: 27 July 2004
1
Comments
This assignment concentrates on the discrete-time Fourier series (DTFS) and discrete-time Fourier
transform(DTFT). The point of this
Aliasing in Detail
Aliasing in Detail
Andrew W. H. House
18 May 2004
1
The Concept of Aliasing
The concept of aliasing that weve come across in this course is sort of like aliasing in real
life. In the everyday usage of the term, an alias is an assumed or
Sampling and the Sampling Theorem
Sampling and the Sampling Theorem
Andrew W. H. House
11 May 2004
1
Review of the Sampling Theorem
We previously stated the sampling theorem, which allows us to reconstruct a continuous-time
signal from its discrete-time s
Introduction to the Sampling Theorem
Introduction to the Sampling Theorem
Andrew W. H. House
06 May 2004
1
What Are Discrete-Time Systems and Signals?
The title of this course is Discrete-Time Systems and Signals. Since this is a second course
in the area
Question 1:
Problem 3.28, part (a), Figure (b):
Problem 3.28, part (a), Figure (c): (note the right-hand side of the equation is divided by 6)
Problem 3.28, part (b):
Question 2:
Problem 3.29, part (a)
Problem 3.29, part (d)
Question 3: Problem 3.30
Quest
Discrete-Time Signals
Discrete-Time Signals
Andrew W. H. House
20 May 2004
1
Discrete-Time Signals and Systems
A typical DT system might be represented as follows.
xd (n) DT yd (n)
In this scenario, there are several points of interest.
xd (n) may be sam
Discrete-Time Systems
Discrete-Time Systems
Andrew W. H. House
27 May 2004
1
Basics of Discrete-Time Systems
We are primarily interested in the I/O behaviour of discrete-time systems. That is, we want
to know the output of the system for a given input.
x(
Course Outline
Engineering 7824 Discrete-Time Systems and Signals
Memorial University of Newfoundland
Faculty of Engineering and Applied Science
04 May 2004
1
Instructor
Andrew House, M.Eng Candidate
Lab:
EN4029
737-3527
Online:
http:/www.engr.mun.ca/~aho
Dierence Equations
Dierence Equations
Andrew W. H. House
10 June 2004
1
The Basics of Dierence Equations
Recall that in a previous section we saw that IIR systems cannot be evaluated using the convolution sum because it would require an innite number of o
The Convolution Sum for DT LTI Systems
The Convolution Sum for Discrete-Time LTI Systems
Andrew W. H. House
01 June 2004
1
The Basics of the Convolution Sum
Consider a DT LTI system, L.
x(n) L y (n)
DT convolution is based on an earlier result where we sh
Properties of DT LTI Systems
Properties of Discrete-Time LTI Systems
Andrew W. H. House
03 June 2004
1
Basic Properties of DT LTI Systems
DT LTI systems have a number of properties which can be useful or relevant in dealing with
such systems. These proper
Assignment 1
ENGI 7824 Discrete-Time Systems and Signals
Assignment 1
Assigned: 18 May 2004
Due: 27 May 2004
1
Comments
This assignment covers sampling, the sampling theorem, and aliasing. The point of this assignment is to get you working with these conc
Assignment 4
ENGI 7824 Discrete-Time Systems and Signals
Assignment 4
Assigned: 25 June 2004
Due: 13 July 2004
1
Comments
This assignment covers the z -transform and the discrete-time Fourier series, although it
builds on previous topics. Be sure to pay a
Assignment 3
ENGI 7824 Discrete-Time Systems and Signals
Assignment 3
Assigned: 10 June 2004
Due: 24 June 2004
1
Comments
This assignment covers DT convolution of LTI systems, dierence equations, and some basic
questions on DT Fourier analysis. The point
Assignment 2
ENGI 7824 Discrete-Time Systems and Signals
Assignment 2
Assigned: 27 May 2004
Due: 10 June 2004
1
Comments
This assignment covers DT signals and systems, as well as their properties. There will also be
one question requiring use of Matlab. T