Lecture "Digital Audio Effects"

Basic Information

Lecturers:   Klaus Linhard  (lecture and exercise)
Room:   Builing F, room F-SR-II (in the first week), building F, room F-SR-III (in the second week), and PC lab in building B (in the second week).
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
13.08.2018   F-SR-III   08:30 h - 11:00   Lecture 1  
13.08.2018   F-SR-III   13:30 h - 16:00   Lecture 2  
14.08.2018   F-SR-III   08:30 h - 11:00   Lecture 3  
14.08.2018   F-SR-III   13:30 h - 16:00   Lecture 4  
15.08.2018   F-SR-III   08:30 h - 11:00   Lecture 5  
15.08.2018   F-SR-III   13:30 h - 16:00   Lecture 6  
20.08.2018   F-SR-III   08:30 h - 11:00   Lecture 7  
20.08.2018   F-SR-III   13:30 h - 16:00   Lecture 8  
21.08.2018   F-SR-III    08:30 h - 11:00   Exercise 1  
21.08.2018   F-SR-III    13:30 h - 16:00   Exercise 2  
22.08.2018   F-SR-III    08:30 h - 11:00   Exercise 3  
22.08.2018   F-SR-III    13:30 h - 16:00   Exercise 4  



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 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. In case of problems or questions please contact This email address is being protected from spambots. You need JavaScript enabled to view it..
The examinations will take place in the DSS/ICT library (D-037A).



Website News

30.11.2018: New student project on driver distraction added.

01.10.2018: Dissertation of Philipp Bulling added.

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.

Recent Publications

J. Reermann, E. Elzenheimer and G. Schmidt: Real-time Biomagnetic Signal Processing for Uncooled Magnetometers in Cardiology, IEEE Sensors Journal, January, 2019 (early access, doi:  10.1109/JSEN.2019.2893236)


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

Saturday Morning Physics 2018

The DSS team was invited to participate in the last of the "Saturday Morning Physics" (SMP) events in 2018. On December 8th, a Saturday of course, Thorben Kaak, Gerhard Schmidt, and Owe Wisch gave a talk on underwater signal processing. Pupils from all around Schleswig-Holstein were quite interested, especially in the basics of SONAR systems.