Purdue University
School of Electrical and Computer Engineering

EE438 Digital Signal Processing with Applications
Spring 2001
Prof. Michael D. Zoltowski

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VIP ANNOUNCEMENT I: Mean for Exam 3 = 61; Std. Dev. = 23; Median =60; Max score = 100 (six people -- congrats!).

VIP ANNOUNCEMENT II: Lecture for Fri., April 27, will be used as a help session for the Final Exam.

VIP ANNOUNCEMENT III: Final Exam is Monday, April 30, 1:00-3:00 pm in CHME 302. See coverage below.

Course Description Including Course Outcomes (Word Doc).
Course Syllabus.
Course Information.
Homework 1. Homework 1 Solution.
Homework 2. Homework 2 Solution.
Homework 3. Homework 3 Solution.

EXAM 1: Exam 1 (pdf)., Coverage: Linearity, Time-Invariance, Properties of CTFT, DTFT, CTFT-DTFT Relationship, Properties of DTFT, Frequency Response of LTI Systems. Solution , Histogram (ps) , Histogram (pdf)

Homework 4. Homework 4 Solution.
Homework 5. Homework 5 Solution.

EXAM 2: Exam 2 (pdf)., Solution , Histogram
Problem 1: DFT and properties, Relationship between DTFT and DFT, Time-Domain Aliasing.
Problem 2: Divide and Conquer Approach to DFT Computation, Radix-2 FFT --see Prob. 4 of Hmwk. 4 and Matlab Demo DivideConquer.m
Problem 3: Basic Speech Models, Pitch Period/Frequency, Formant Frequencies, Spectrograms, Sampled Speech Model --see Prob. 3 of Hmwk. 5 and Matlab Demos voweleg.m and vowelwin.m

Homework 6. Homework 6 Solution.
Homework 7. Homework 7 Solution.

EXAM 3: Exam 3 (pdf)., Exam 3 Solution. Histogram for Exam 3. EXAM3HelpSheet.pdf Problem 1: LPC; Problem 2: Basic 2-D signals, 2-D CSFT properties, and 2-D CSFT Transform Pairs; Problem 3: 2-D Sampling as well as same topics for Problem 2.

Homework 8. Hmwk8_5.m Homework 8 Solution.

FINAL EXAM: Monday, April 30, 1:00-3:00 pm in CHME 302. Coverage:
Problem 1: Relationship between Z-Transform and DFT, and Time-Domain Aliasing;
Problem 2: Properties of the DTFT and the DFT;
Problem 3: LPC (Linear Prediction for Speech).
Problem 4: Basic 2-D signals, 2-D CSFT properties, and 2-D CSFT Transform Pairs;
Problem 5: 2-D Sampling as well as same topics for Problem 4.
Problem 6: Spatial Filtering.

Matlab Demos on Image Enhancement: histdemo.m , demo2.mat , sampdemo.m , demo1.mat , filtdemo.m , dft2img.m

Matlab Demos on 2D Signals/ 2D FFT: circ_jinc.m , grating.m , cos2d.m , rect_sinc2d.m , cos2dxcirc.m , sine_sampling.m

Wave files needed to run demos: getspeech.m , enf1s1t0.wav , erf1s1t0.wav , 0wf1s1t0.wav , 00f1s2t0.wav , enm1s1t0.wav
Additional wave files for speech intro: voweleg.m , voweleg2.m , vowelwin.m , 0af1s1t0.wav , 0ef1s1t0.wav , 0of1s1t0.wav , 0uf1s1t0.wav , 0if1s1t0.wav , erm1s1t0.wav , gom1s1t0.wav , stm1s1t0.wav , 00m1s1t0.wav , enm1s1t0.wav
Matlab Demos on Windowing: windowseg.m , windowseg2.m , windowedsines.m , trunceffects.m
Matlab Demos on Aliasing: aliaseg.m , aliaseg2.m , aliaseg3.m
Matlab Demos on Upsampling: upsamplingx2eg1.m , upsamplingx2eg2.m
Matlab Demo on Zero Order Hold and Upsampling: ZOHeg1.m
Matlab Demo on Effect of Zeroes and Poles on Frequency Response: zpgui.m
Matlab Demo on Quantization: quantizeb2.m
Matlab Demos on Sampling DTFT (inc. picket fence effects): sineDFTeg1.m , sineDFTeg2.m , sineDFTeg3.m
Matlab Demo on Time Domain Aliasing: timealias.m
Matlab Demo on Divide/Conquer Approach to DFT: DivideConquer.m
Lecture Notes.
Exams.
Homework Solutions.
Laboratory.

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Supplementary reading materials:

Supplementary Notes on Fourier Series and Linear Algebra.

Ken Fischer's Web Supplements (CT convolution; DT convolution).

Previous Offerings:

Fall 2000

Spring 2000

Fall 1999

Spring 1999

Fall 1998

Spring 1998

Fall 1997

Spring 1997

Fall 1995