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

None.

 

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.2019   xx:xx h        

 

Evaluations

  Current evaluation     Completed evaluations

 

Website News

20.10.2019: We had a very good retreat on the island of Sylt.

07.08.2019: Talk from Juan Rafael Orozco-Arroyave added.

11.07.2019: First free KiRAT version released - a game for Parkinson patients

25.06.2019: About 30 pupils from the Isarnwohld-Schule in Gettorf visited us.

02.05.2019: Christin Baasch finished sucessfully her defense on the evaluation of Parkinson speech.

30.11.2018: New student project on driver distraction added.

Recent Publications

   

J. Reermann, E. Elzenheimer and G. Schmidt: Real-time Biomagnetic Signal Processing for Uncooled Magnetometers in Cardiology, IEEE Sensors Journal, Volume 15, Number 10, Pages 4237-4249, June 2019, doi: 10.1109/JSEN.2019.2893236

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

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Recent News

DSS-Retreat 2019

As in the last year we spent a couple of days (15.10.2019 till 18.10.2019) on the island Sylt to reflect our past, current, and future research work. Due to a "cold wave" we were a bit reduced this year, but anyhow, we had a very good (and producive) time on this beautiful island. Beside our research plans (reflecting the last year and planning of the next years), we also discussed teaching ...


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