Matlab Project 3
EE/CpE548WS Digital Signal Processing
Instructions:
1. Download the lab manual titled Digital Signal Processing Laboratory Using Matlab from
http:/highered.mcgrawhill.com/sites/0072865466/student_view0/lab_manual.html
2. All Matlab comma
ECE 346 Final Exam
May 13, 2014
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ECE 346 Final Exam
Note: The exam is closed books/notes, except for the allowed four doublesided pages. It has 9 questions, for a total
of 70 points and 0 bonus points. You have 3 hours to complete it. Show all
ECE 346 Final Exam
May 08, 2012
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ECE 346 Final Exam
May 14, 2013
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ECE 346 Midterm Exam # 2 cfw_4qu 29: 202 _ _ _ _5 Page I_ ol'l_6
I. Consider an analogtodigital converter (ADC) that is used to sample a continuoustime signal :L'(l) at a rate of
8 x ll)6 samples per second.
(a) (2 points) The samples produced by the
ECE 346 Midterm Exam #1 March 06, 2014 Page I of 2
ECE 346 Midterm Exam #1
Note: The exam is closed books/notes, except for the allowed two doublesided pages. It has 3 questions, for a total
of 40 points and 4 bonus points. You have 80 minutes to complet
ECE 346 Midterm Exam # 1
February 23, 2012
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0 The exam is open ma
ECE 346 Midterm Exam #2 April 24, 2014 Page 1 of 2
ECE 346 Midterm Exam #2
Note: The exam is closed books/notes, except for the allowed two doublesided pages. It has 5 questions, for a total
of 40 points and 2 bonus points. You have 80 minutes to complet
ECE 346 ~ Midterm Exam #1 March 11, 2015 Page I of 2
ECE 346 ~ Midterm Exam #1
Note: The exam is closed books/notes, except for the allowed two doublewsided pages. It has 3 questions, for a totai
of 50 points and 0 bonus points. You have 80 minutes to com
I!
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ECE 346 Midterm Exam # 2
April 26, 2013
t to
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ECE 346 Midterm Exam # 1
March 8, 2013
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o The exam is open book (
ECE 346 PreRequisite Quiz
January 30, 2011
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ECE 346 Homework #5
Due Date: April 13, 2014 (8:40 AM)
Page 1 of 2
ECE 346 Homework #5
1. (10 points) Let X(ej ) denote the DTFT of x[n] = 4n u[n]. Let y[n] denote a finiteduration sequence of length
10, i.e., y[n] = 0, n < 0 and y[n] = 0, n 10. The 10p
ECE 346 Midterm Exam #2
April 23, 2015
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ECE 346 Midterm Exam #2
Note: The exam is closed books/notes, except for the allowed two doublesided pages. It has 3 questions, for a total
of 50 points and 0 bonus points. You have 80 minutes to complet
DiscreteTime Fourier Transform
1
Definition  The discretetime Fourier transform
(DTFT) X (e j ) of a sequence x[n] is given by
X (e
j
)=
x[n]e j n
n =
The DTFT is often called the Fourier spectrum
In general, X (e j ) is a complex function of the
Discrete Fourier Transform
The discrete Fourier transform (DFT) of a lengthN
sequence x[n], 0 n N1, is obtained by uniformly
sampling its DTFT X(ej) on the axis at k=2k /N
X [ k ] X (e
j
)
2 k/ N
N 1
x[n] e j 2 n k / N ,
0 k N 1
n0
Let WN=ej2 /N. Th
Laboratory Exercise 4
LINEAR, TIMEINVARIANT DISCRETETIME SYSTEMS:
FREQUENCYDOMAIN REPRESENTATIONS
4.1
TRANSFER FUNCTION AND FREQUENCY RESPONSE
Project 4.1
Transfer Function Analysis
Answers:
Q4.1 The modified Program P3_1 to compute and plot the magnit
Problem 1
Note: The solution to (f) contains error. The right solution is
Problem 2
Note:
Let Y (ejw)= dX(ejw)/dw. Then by the differentiation in frequency property, y[n] =
jnx[n].




By Parsevals theorem, 

(not
) or 6897.43.
Problem 3
Note: G
ECE 346: Sec. 02 ~ Recitation Quiz #1 Week of Feb. 9, 2015 Page 1 of 3
1. Provide brief but rigorous answers to the following short questions.
(a) (2 points) Is sin(37n) a periodic or an aperiodic signal? Justify your answer.
(b) (2 points) Consider the
ECE 346: Sec. 01 Recitation Quiz #1 Week of Feb 9, 2015 Page 1 of 3
1. Provide brief but rigorous answers to the following short questions.
(a) (2 points) Is cosh/57m) a periodic or an aperiodic signal? Justify your answer.
(b) (2 points) Consider the sig
ECE 346 ~ PreRequisite Quiz February 7, 2013 Page i of 5
1. Consider a singleinput, singleoutput (continuoustime) system, as shown below.
Figure 1: Block diagram of a singleinput, singleoutput (continuoustime) system.
Assume that the system is a
ECE 346 PreRequisite Quiz
February 3, 2014
Page 1 of 5
1. Consider a singleinput, singleoutput, discretetime system T , as shown below.
x[n]
T
y[n]
Figure 1: Block diagram of a singleinput, singleoutput, discretetime system T .
The output of this s
ECE 346 Homework #4 (80 points)
Due Date: April 6, 2015, 8:40 AM
Page 1 of 2
ECE 346 Homework #4 (80 points)
In order to solve this homework, you should refer to the following block diagram of a DSP system.
x(t)
x[n]
C/D
T
H(ej )
y[n]
D/C
yr (t)
T
In this
ECE 346 Midterm Exam #1
March 11, 2015
Page 1 of 2
ECE 346 Midterm Exam #1
Note: The exam is closed books/notes, except for the allowed two doublesided pages. It has 3 questions, for a total
of 50 points and 0 bonus points. You have 80 minutes to complet