Lecture "Digital Audio Effects"

Basic Information

Lecturers:   Klaus Linhard  (lecture and exercise)
Room:   Will be announced soon.
Language:   English
Target group:   Students in electrical engineering and computer engineering
Prerequisites:   Previous knowledge about digital signal processing and linear systems. Some experience with MATLAB is useful, but not mandatory.

Students attending this lecture should be able to implement efficient and robust signal processing structures. Knowledge about moving from the analog to the digital domain and vice versa including the involved effects (and trap doors) should be acquired. Also differences (advantages and disadvantages) between time and frequency domain approaches should be learnt.

Topic overview:

  • Digital signal processing - summary
    • Ordered sequences of numbers
    • Difference equations
    • Linear systems
  • Frequency-domain processing - summary
    • Discrete Fourier transform
    • Fast convolution
    • Transfer functions and spectra
  • Introduction to MATLAB and motivation
  • Digital filters
    •  A,B,C,R468 weighting filters
    • Equalizer
    • Sampling rate conversion
  • Dynamic compression
    • Fullband
    • Multiband
    • De-esser
  • Room acoustics and reverberation
    • Impulse response
    • Reverberation

Zölzer, U.: Digital Audio Effects, John Wiley & Sons, 2011
Zölzer, U.: Digital Audio Signal Processing, John Wiley & Sons, 2008
Zölzer, U.: Digitale Audiosignalverarbeitung, Vieweg+Teubner Verlag, 2005
Smith, J.O.: Introduction to Digital Filters: with Audio Applications, W3K Publishing, 2007
Smith, J.O.: Mathematics of the Discrete Fourier Transform (DFT): with audio Applications, De Gruyter Saur, 2013
Smith, J.O.: Spectral Audio Signal Processing, W3K Publishing, 2011
Dickreiter, M.: Handbuch der Tontechnik, De Gruyter Saur, 2013


Below you can find the schedule of the lecture and exercises of the blockcourse.

Date   Room   Time   Topic
07.08.2017   ???   08:30 h - 11:00   Lecture 1  
07.08.2017   ???   13:30 h - 16:00   Lecture 2  
08.08.2017   ???   08:30 h - 11:00   Lecture 3  
08.08.2017   ???   13:30 h - 16:00   Lecture 4  
09.08.2017   ???   08:30 h - 11:00   Lecture 5  
09.08.2017   ???   13:30 h - 16:00   Lecture 6  
16.08.2017   ???   08:30 h - 11:00   Lecture 7  
16.08.2017   ???   13:30 h - 16:00   Lecture 8  
17.08.2017   ??? / PC-lab building B   08:30 h - 11:00   Exercise 1  
17.08.2017   ??? / PC-lab building B   13:30 h - 16:00   Exercise 2  
18.08.2017   ??? / PC-lab building B   08:30 h - 11:00   Exercise 3  
18.08.2017   ??? / PC-lab building B   13:30 h - 16:00   Exercise 4  



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Programs and data

  Programs and data (part 1)
  Programs and data (part 2)



Below is the list of students with their exam dates. If you do not have a date for the exam yet please write an e-mail with your matriculation number to This email address is being protected from spambots. You need JavaScript enabled to view it. to request a date.

Date   Time   Students (matriculation numbers)   Assessor
xx.xx.2017   08:00 h   xxxxxxx, yyyyyyy   Thorben Kaak


Recent Publications

P. Durdaut, J. Reermann, S. Zabel, Ch. Kirchhof, E. Quandt, F. Faupel, G. Schmidt, R. Knöchel, and M. Höft: Modeling and Analysis of Noise Sources for Thin-Film Magnetoelectric Sensors Based on the Delta-E Effect, IEEE Transactions on Instrumentation and Measurement, published online, 2017

P. Durdaut, S. Salzer, J. Reermann, V. Röbisch, J. McCord, D. Meyners, E. Quandt, G. Schmidt, R. Knöchel, and M. Höft: Improved Magnetic Frequency Conversion Approach for Magnetoelectric Sensors, IEEE Sensors Letters, published online, 2017


Website News

18.06.2017: Page about KiRAT news added (also visible in KiRAT).

31.05.2017: Some pictures added.

23.04.2017: Time line for the lecture "Adaptive Filters" added.

13.04.2017: List of PhD theses added.


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

Alexej Namenas - A New Guy in the Team

In June Alexej Namenas started in the DSS Team. He will work on real-time tracking algorithms for SONAR applications. Alexej has done both theses (Bachelor and Master) with us. The Bachelor thesis in audio processing (beamforming) and the Master thesis in the medical field (real-time electro- and magnetocardiography). In addition, he has intership erperience in SONAR processing.

We are pretty ...

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