Lecture "Digital Signal Processing"

Basic Information

Lecturers:   Gerhard Schmidt (lecture) and Eric Elzenheimer (exercise)
Room:   Building C - SR II (lecture and exercise)
Language:   German
Target group:   Students of Electrical Engineering and Computer Engineering in their
6th semester, also for students of Computer Science or Physics with appropriate knowledge of signals and systems.
Prerequisites:   Mathematics for engineers I, II, III, Foundations in electrical engineering I, II
Contents:  

Topic overview:

  • Signal digitization
    • analogue-to-digital and digital-to-analogue conversion
    • quantization characteristics, quantization noise
    • sample and hold
    • sampling of functions and sequences with/without phase shift, down- and up-sampling (decimation, interpolation)
  • Spectra (DFT and FFT)
    • convolution via DFT, fast DFT evaluation
    • radix-2/DIT FFT and alternatives
    • transformation of real sequences, "pruning" and "zoom" FFT
    • spectral analysis of infinite sequences (windowing, periodograms of random signals)
  • Digital filters
    • difference and state equations
    • equivalent realisations/transformed structures, diagonal form, transition matrix
    • realisation effects (input, arithmetic, and coefficient errors)
References:  

    Rabiner, L. R.; Schafer, R. W.: Digital Processing of Speech Signals, Prentice-Hall, 1978
    Kondoz, A. M.: Digital Speech-Coding for Low Bit Rate Communications System, John Wiley & Sons, 1994
    von Grünigen, Daniel: Digitale Signalverarbeitung, Hanser, 2014

 

News

Please register in the online booking system. You can find the booking system here. Exams take place in room D-013.

Lecture slides

  Slides of the lecture "Introduction"
(Introduction, boundary conditions of the lecture)
  Slides of the lecture "Signals"
(Signal types, AD and DA conversion, sample rate conversion)
  Slides of the lecture "Spectra"
(DFT, FFT, fast convolution)
  Slides of the lecture "Filter"
(Structures, state space desciption, realization)

 

Exercises

Please note that the questionnaires will be uploaded every week before the excercises, if you download them earlier, you won't get the most recent version.

main additional    
  Exercise 1: Sampling and Quantization
  Exercise 2: Reconstruction
    Exercise 3: Sample Rate Conversion / Convolution
    Exercise 4: Discrete Fourier Transform (DFT) / Radix-2-FFT
    Exercise 5: FFTs of real and complex signals
    Exercise 6: Windowing effects
    Exercise 7: Signal-flow graph
    Exercise 8: Filter
    Exercise 9: Signal-flow graph

 

Exams

Below is the list of students with their exam dates. If you do not have a date for the exam yet please register in the online booking system. You can find the booking system here. Exams take place in room D-013.

Date   Time   Students (matriculation numbers)   Assessor
16.07.2018   08:00 h   1016766, 1036586   Eric Elzenheimer
16.07.2018   09:30 h   5620   Eric Elzenheimer
             
17.07.2018   08:00 h   1016196, 1018236   Eric Elzenheimer
17.07.2018   09:30 h   1036588   Eric Elzenheimer
             
24.08.2018   08:00 h   1016255   Eric Elzenheimer
24.08.2018   10:00 h   1016631, 1016358   Eric Elzenheimer
24.08.2018   11:00 h   1037450   Eric Elzenheimer
             
14.09.2018   08:00 h   1036577   Eric Elzenheimer
14.09.2018   10:00 h   1016212, 1016220   Eric Elzenheimer
14.09.2018   13:00 h   1016315   Eric Elzenheimer
14.09.2018   13:30 h   1036903, 1032756   Eric Elzenheimer
14.09.2018   14:30 h   1036585, 1016744   Eric Elzenheimer
             
19.09.2018   10:00 h   1015223,  1036575   Tobias Hübschen
19.09.2018   11:00 h   1036590   Tobias Hübschen

 

Website News

14.08.2018: New section about our SONAR "sisters" added.

18.07.2018: New section about our Parkinson voice training game added.

07.07.2018: New lecture Fundamentals of Acoustics by Jan Abshagen added.

03.03.2018: Team wall added.

28.02.2018: News wall added.

Recent Publications

T. O. Wisch, T. Kaak, A. Namenas, G. Schmidt: Spracherkennung in stark gestörten Unterwasserumgebungen, Proc. DAGA, Germany, 2018

J. Sautter, F. Faubel, M. Buck, G. Schmidt: Evaluation of Different Excitation Generation Algorithms for Artificial Bandwidth Extension, Conference on Electronic Speech Signal Processing, 2018, Ulm, Germany (online access)

Contact

Prof. Dr.-Ing. Gerhard Schmidt

E-Mail: gus@tf.uni-kiel.de

Christian-Albrechts-Universität zu Kiel
Faculty of Engineering
Institute for Electrical Engineering and Information Engineering
Digital Signal Processing and System Theory

Kaiserstr. 2
24143 Kiel, Germany

Recent News

Philipp is now "Doc Bulling"

On Monday, 10th of September 2018, Philipp Bulling sucessfully defended his dissertation on speech enhancement for in-car communication systems. His work focused mainly on the control of adaptive feedback cancellation filters (details can be found here). After an excellent talk Philipp gave very good answers to the questions of the committee and at around 11:30 h everythings war over and we ...


Read more ...