|
Lecturer(s)
|
-
Steiger Kateřina, Ing. Ph.D.
-
Mokrý Pavel, prof. Ing. Ph.D.
|
|
Course content
|
1.Mechanical vibration, harmonic oscillator, examples of nonlinear oscillators. 2. Forced oscillation, damped oscillations, and the quality factor, resonance. 3. Coupled oscillators, formation of waves and wave propagation in space, Huygens principle. 4. Sound field sound pressure, acoustic velocity, thermodynamic principles of wave propagation in an ideal gas. 5.Strain tensor and the stress tensor, elastic moduli tensors in isotropic and anisotropic solids. 6. Wave equation, wave equation in gases and solids. 7. General solution of the wave equation, and standing wave, harmonic waves, Helmholtz equation. 8. Sound field, acoustic impedance, reflection and refraction of sound, sound insulation, reflection, transmission and absorption coefficients. 9.Suppression of the transmission of noise and vibrations, passive, active and semi-active methods. 10. Measurement of vibration transmission, principles and design of accelerometers. 11. Measurement of acoustic state variables, principles and design of electro-acoustic transducers. 12. Measurement of acoustic material parameters, Kundt tube measurements and measurements in the reverberation room. 13. Electrical equivalent circuits of electroacoustic transducer elements and acoustic systems. 14. Methods for modeling the acoustic systems. Tutorials: At each tutorial, the material explained at the previous lecture will be discussed and further developed on practical and concrete examples. In the middle and at the end of the semester, a test of the subject is scheduled.
|
|
Learning activities and teaching methods
|
|
Monological explanation (lecture, presentation,briefing)
|
|
Learning outcomes
|
The course is designed to explain the basic principles of mechanical vibration, sound propagation in the air, and propagation of mechanical waves in solids. The physical principles and the basic layout of electroacoustic transducers will be explained. The emphasis of the course will be on acquiring the knowledge of acoustic phenomena in sensors, measuring devices and systems for the noise and vibration suppression.
Students will acquirefundamental principles of mechanical vibration, sound propagation in the air, propagation of mechanical waves in solids and they will be able to apply these principles in the design of electro-acoustic transducers, sensors, measuring devices and systems for suppressing noise and vibration.
|
|
Prerequisites
|
None
|
|
Assessment methods and criteria
|
Combined examination
Requirements for getting a credit are the active participation at the tutorials and successful passing the tests. The examination consists of the written and oral part.
|
|
Recommended literature
|
-
Havránek A.:. Klasická mechanika I. Hmotný bod a tuhé těleso. Karolinum Praha, 2003.
-
Havránek A.:. Klasická mechanika II. Kontinuum.. Karolinum, Praha, 2004.
-
Havránek A.:. Klasická mechanika III. Vlnění a akustika. Karolinum, Praha, 2005.
-
Horák Z., Krupka F.:. Fyzika. Praha, 1966.
-
Kvasnica J.:. Matematický aparát fyziky. Praha, 2000.
-
MAIN, I. G. Kmity a vlny ve fyzice. Academia Praha, 1990.
-
ŠKVOR, Z. Akustika a elektroakustika. Academia AVČR, Praha, 2001. ISBN 80-200-0461-0.
|