Lecture "Fundamentals of Acoustics"

Basic Information

Lecturers:   Jan Abshagen  (lecture) and Thorben Kaak (exercise)
Room:   F-SR III (see Univis for details)
Language:   English
Term:   Winter term
Target group:   Students in electrical engineering
Prerequisites:   Previous knowledge about digital signal processing and linear systems.
Contents:  

During the lecture and the exercises basic knowledge about the principles of sound and vibrations and their applications in the field of underwater acoustics should be acquired. Students should learn about the physical and technical aspects of noise generation, noise measurements, and noise reduction in underwater environments. By means of comparison the students should recognize the differences between waterborne and airborne sound. Elementary methods and techniques of underwater sound measurements should also be understood by the listeners of the lecture.

   

Topic overview:

  • Fundamentals of vibrations
    • Mechanical oscillators
    • Electro-mechanic analogy
    • Vibrating string
  • Theory of sound fields
    • Basic equations
    • Simple sound sources
    • Reflection
    • Refraction
    • Absorption
  • Sound and systems
    • Resonators
    • Filters
    • Waveguides
    • Enclosed spaces
    • Diffuse sound field
  • Transducers
    • Electroacoustic transduction
    • Radiation pattern
    • Hydroacoustic transducers
  • Sound-structure interaction
    • Vibrating plate
    • Sound radiation
    • Flow-induced noise
    • Quite structure design
  • Ship acoustics
    • Structure-borne sound
    • Interior noise
    • Transmission loss
    • Source level
  • Acoustic sensor systems
    • Directivity
    • Antenna design
    • Hydroacoustic antennas
    • Interior flow noise
  • Underwater noise measurement
    • Reverberation
    • Ambient noise
    • Ship noise
    • Noise mapping
    • Ocean monitoring
  • Impulsive underwater noise
    • Construction noise
    • Wind turbines
    • Acoustics of air bubbles
    • Noise reduction
  • Oceanographic Instruments
    • Acoustic Doppler current profiler
    • Seafloor acoustic systems
    • Acoustic tomography
 


References:  
  • L. Kinsler, A. Frey, A. Coppens, J. Sanders: Fundamentals of Acoustics, Wiley, 2009
  • J. Blauert, N. Xiang: Acoustics for Engineers, Springer, 2008
  • R. Lerch, G. Sessler, D. Wolf: Technische Akustik, Springer, 2009
  • M. Möser: Technische Akustik, Springer 2015
  • R. Urick: Principles of Underwater Sound, McGraw-Hill, 1975
  • H. Medwin: Sounds in the Sea, Cambridge, 2005<
  • J. Abshagen: Wasserschallmessungen, M. Möser (Hsg.), Springer, 2018
Picture sources:  
  • F. Gerdes, M. Görler, M. Wildemann, A. Müller, C. Zerbs: Measurements of pile driving noise at the research platform FINO3. In: W. Kropp, O. von Estorff and B. Schulte-Fortkamp (eds.), Proceedings of the 45th International Congress on Noise Control Engineering, INTER-NOISE 2016, German Acoustical Society, 7126 - 7133, 2016
  • E. Schmidtke: Kreisarray zur Richtungsbestimmung akustischer Signale. Fortschritte der Akustik - DAGA 2016 (Aachen), 147 - 149, 2016
  • J. Abshagen, D. Stiller, V. Nejedl: Schallausbreitung in einem Oberflächenkanal im norwegischen Sognefjord. Fortschritte der Akustik - DAGA 2018 (München), 863 - 865, 2018

News

Starting time of lecture shifted to 14:15 (instead of 14:00).

 

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.

Date   Time   Students (matriculation numbers)   Assessor
xx.xx.2018   xx:xx h        

 

Website News

30.11.2018: New student project on driver distraction added.

01.10.2018: Dissertation of Philipp Bullding 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

E. Elzenheimer, H. Laufs, T. Sander-Thömmes, G. Schmidt: Magnetoneurograhy of an Electrically Stimulated Arm Nerve, Joint Journal of the German Society for Biomedical Engineering in VDE and the Austrian and Swiss Societies for Biomedical Engineering and the German Society of Biomaterials, Volume 63, Number 12, Pages 363-366, September 2018

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

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.