EE477: Digital Signal Processing

Final exam summary:

average: 89/100
hi: 100/100
lo: 77/100
Histogram:
100: 1
90s: 7
80s: 6
70s: 2

May 7 M

#1:  7.265 cos(w₀t - 1.43)
#2:  (a) cosine, amplitude 1, shifted left by 6.3 ms;  (b) T_s,max = 25 ms
#3:  (a) 480Hz, 520Hz;  (b) magnitude=1 @ 480Hz, and 520Hz, zero elsewhere
#4:  output[0:6] = [0 8 4 2 -2 -3 0]
#5:  (a) ψ(t) = (A/β) e^βt - (A/β);  (b) A=100 Hz, β= (ln 8)/2 = 1.04

Midterm #2 solution summary:

#1:  (a) write H(e^jw) = e^-j2w(real terms);
  (b) y[n]=x[n]+2x[n-1]-2x[n-2]+2x[n-3]+x[n-4];
  (c) y[-1:8]=[0 1  2  -1  4  -1  2  1 0 0]
#2:  (a) y[n]=x[n]+2x[n-1]+2x[n-2]-0.8y[n-1]-0.32y[n-2];
  (b) output[0:4]=[1  1.2  0.72  -0.96  0.5376]
#3:  (a) H(z)=(-1+z^-1-2z^-2-3z^-3) / (1+0.1z^-1+0.2z^-2);
  (b) magnitude=1/1.1=0.909; phase=π
#4:  (a) unit step response = (0.1)^n-1 u[n-1];
  (b) H(z)= (z^-1 - z^-2)/(1-0.1z^-1) = (z-1)/{z(z-0.1)};
  (c) poles: {0, 0.1}

May 4 F

Final Exam:  Wednesday, May 9, 10AM-noon, Cobleigh 632. Closed book, but one handwritten page of notes allowed. Also bring a pencil and a calculator.

NO Lab

Please attend the Design Fair at the SUB (Ballroom A) (noon-5:30PM)

May 2 W

Final exam review.

Suggested review problems:  8.14, 8.16, 9.2, 9.7.  [Solutions]

Apr. 30 M

Apr. 27 F

Lab: The memo report for Lab #10 is due at the start of the lab session.

Work on Lab #11 (FFT processing).  This is the last lab for EE477!!

Lab handout pdf

Here are the files:  block_fft.m     noisy_speech.wav

Please simply turn in the check off sheet at the end of the lab period:  no memo report for this lab.

Apr. 25 W

[lecture notes fft htm]  [lecture notes fft pdf]

Apr. 23 M

Discuss Exam #2 results.

Start overview of FFT algorithms.

PLEASE NOTE THE FOLLOWING CHANGE FROM THE ORIGINAL SYLLABUS:  the FINAL EXAM for this course will be held on WEDNESDAY, MAY 9, 2007, 10AM-noon, in Cobleigh 632.

Apr. 20 F

EXAM #2 in class

50 minutes; ONE sheet of handwritten notes allowed (closed book);

Pencil and calculator recommended.

Lab: The memo report for Lab #9 is due at the start of the lab session.

Work on   Lab #10 (frequency domain).

The Lab #10 memo reports will be do at lab time on Thursday, April 26.  Next week will also be the last EE477 lab session:  we will do an FFT lab (a handout, not in the book).

Apr. 18 W

Review for Exam #2 (to be held in class on Friday, 4/20).

Solution for HW #3

Apr. 16 M

No class this day (instructor out of town)

Apr. 13 F

Guest lecture:  Dr. Ross Snider

Lab: The memo report for the second portion of Lab #8 is due at the start of the lab session.

Work on   Lab #9 (Sampling and Zooming of Images).

The Lab #9 memo reports will be do at lab time on Thursday, April 19.

[lecture notes 9 htm]  [lecture notes 9 pdf]

Assigned:  Read Chapter 9.

REMINDER:  Exam #2 will be held in class on Friday, April 20.  The exam will cover through the lecture on 4/18/07.  Exam is closed book, but you may bring one sheet of handwritten notes.  You also need to bring a pencil and a hand calculator.

Apr. 6 F

No class this day (University Day holiday)

Lab: The memo report for the first portion of Lab #8 is due at the start of the lab session.

Work on sections 3.4-3.9 of  Lab #8 (Filtering and Edge Detection of Images).

The Lab #8 3.4-3.9 memo reports will be do at lab time on Thursday, April 12.

[lecture notes 8b htm]  [lecture notes 8b pdf]

Mar. 30 F

IIR difference equations (cont.)

Lab: The memo report for Lab #7 is due at the start of the lab session.

Work on Lab #8 (Filtering and Edge Detection of Images). We will be doing parts 1 through 3.3 this week.  We will do the remaining parts (3.4-3.9) of Lab #8 next week.

The Lab #8 1-3.3 memo reports will be do at lab time on Thursday, April 5.

For the curious, here is some information about the "lenna image" used frequently in image processing examples.

[lecture notes 8a htm]  [lecture notes 8a pdf]

Homework #3 is due at the start of class.

Visualizing system characteristics from the pole and zero positions.

[lecture notes 7b htm]  [lecture notes 7b pdf]

Here is the Matlab function used in class to visualize zero (and pole) locations and |H(z)|:
zview.m

The memo report for Lab #6 is due at the start of the lab session.

Lab:  Work on Lab #7 (Everyday Sinusoidal Signals). We will be doing parts 7.1-7.4 only (Laboratory A).

You may do Laboratory B (parts 7.5 and 7.6) for extra credit if you wish.

The Lab #7 reports will be do at lab time on Thursday, March 29.

NOTE:  here are two .m files that should be installed in the (matlab)\toolbox\DSPFIRST folder of your home computer.  The versions on the CD-ROM do not work properly with the current version of Matlab, so these should fix the plotting problem.

striplot.m   pez_hit.m

z-transforms (cont.):  relationship between z-transform and the frequency response.

Assigned: Homework #3 (due on Wednesday 28 March 2007 at the start of class):

From the text:  6.18, 7.3, 7.4, 7.12

Begin Chapter 7:  z-transforms

[lecture notes 7a htm]  [lecture notes 7a pdf]

Spring Break (no class or lab this week)

Also, complete Chapter 6 material.

Assigned:  Read and understand Chapter 7.

Lab:  Work on Lab #6 (Filtering Sampled Waveforms). 

The memo report for Lab #5 is due at the start of the lab session.

FIR and convolution (cont.)

Exam #1 returned in class.

EXAM #1 in class

Lab:  Work on Lab #5 (FIR Filtering of Sinusoidal Waveforms). 

FIR systems and convolution.  Begin frequency response material.

Solutions for Homework #2 were handed out in class.

[lecture notes 6 htm]  [lecture notes 6 pdf]

Assigned:  Read and understand Chapter 6.

REMINDER:  Exam #1 will be held in class on Friday, March 2.  The exam covers up through the lecture on 2/26/07.  Exam is closed book, but you may bring one sheet of handwritten notes.  You also need to bring a pencil and a hand calculator.

Linear Time Invariant (LTI) systems and principles (cont.)

Linear Time Invariant (LTI) systems and principles.

[lecture notes 5b htm]  [lecture notes 5b pdf]

Due:  Homework #2 is due at the start of class.

Due:  Memo reports for Lab #4 are due at the start of class.

Lab: No lab this week!

Note:  at 11AM in the ECE Conference room there will be a special informal seminar on job interviews, professionalism, and application prospects presented by Mr. Christopher Struck, an experience consulting engineer in the audio industry.

No class this day (University Holiday: Presidents' Day)

FIR filter structures and examples (cont.)

Assigned: Homework #2 (due on Friday 23 February 2007 at the start of class):

From the text:  4.5, 4.14; 5.2;  5.5

Note:  Midterm Exam #1 will be held in class on Friday 2 March 2007.  More information will be provided before that date.

Lab: The memo report for Lab #3 is due at the start of the lab session.

Work on Lab #4 (AM and FM Sinusoidal Signals).  NOTE that we will be doing only sections 1-3 (Lab A) of this lab.  Please do section 3.3 (even though it is labeled "optional"). You may work on Lab B (sections 4 and 5) for extra credit if you wish.

Complete Chapter 4 (reconstruction) and start Chapter 5 (FIR filters)

Assigned:  Read and understand Chapter 5.

[lecture notes 5a htm]  [lecture notes 5a pdf]

Discussion of synthesis lab.

Sampling:  continuous to discrete-time (cont.)

Sampling:  continuous to discrete-time (cont.)

Due:  Homework #1 is due at the start of class.

Lab: The memo report for Lab #2 is due at the start of the lab session.

Work on Lab #3 (Synthesis of Sinusoidal Signals).  NOTE that the musicgui application does not work with the updated version of Matlab:  just leave out the musicgui section.

Music signals and conventions (cont.); sampling and discrete time.

Feb. 5 M

Sampling (cont.); Music signals and conventions

[Introduction to Musical Acoustics handout pdf]

Assigned: read and understand Chapter 4.

Feb. 2 F

Finish frequency spectrum; start sampling (continuous to discrete time)

[lecture notes 4 htm]  [lecture notes 4 pdf]

Feb. 1 Th

Due:  Lab #1 memo report is due at the START of the lab period.

Lab:  Work on Lab #2 from the textbook.  Please print out a copy of the lab experiment (.pdf file on the CD or hyperlink above) prior to the lab session and bring it with you.  The lab memo report is due at the start of the lab period next week (2/8/2007).

Jan. 31 W

Phasors and frequency spectrum (cont.)

Assigned: Homework #1 (due on Friday 9 February 2007 at the start of class):

From the text:  2.4, 2.5, 2.10;  3.11

Jan. 29 M

Phasors and frequency spectrum

[lecture notes 3 htm]  [lecture notes 3 pdf]

Assigned: finish reading Chapter 3.

Jan. 26 F

Complex exponentials (cont.); begin frequency spectrum

Prerequisite tests are due at the start of class.

Assigned: Read and understand the Chapter 3 material.

Jan. 25 Th

Lab:  Work on Lab #1 from the textbook.  Please print out a copy of the lab experiment (.pdf file on the CD or hyperlink above) prior to the lab session and bring it with you.  The lab memo report is due at the start of the lab period next week (2/1/2007).

Jan. 24 W

Complex exponentials, phasors, and periodic signals (cont.)

Jan. 22 M

Complex exponentials, phasors, and periodic signals

Assigned:  Take-home Prerequisite Test (due Friday 1/26/2006 at the start of class).

[lecture notes 2 htm]  [lecture notes 2 pdf]

Jan. 19 F

First class meeting at 10:00AM in Roberts Hall 208.
Introduction, class overview, lab overview.
Signals in continuous and discrete time.
[lecture notes 1 htm]  [lecture notes 1 pdf]
 

Jan. 18 Th

(no lab this week)