Rzeszów University of Technology



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Rzeszów University of Technology


The Faculty of:

Faculty of Electrical and Computer Engineering

Field of study:

Electronic and telecommunications

Speciality:

Telecommunications

Study degree (BSc, MSc):

MSc


COURSE UNIT DESCRIPTION


Course title:

Environmental acoustics

Lecturer responsible for course: Adam BRAŃSKI

Contacts: phone: 865-10-74, e-mail: abranski@prz.rzeszow.pl

Department: Acoustics Laboratory




Semester

Weekly load

Type of classes

Number of ECTS credits

L

Lectures

C

Theoretical Classes

Lb

Laboratory

P

Project

3

20

10




10




1


Course description


Lecture:

Principles of knowledges: mathematical wave description, acoustical waves, sound, noise, criterion of the acoustic wave division, acoustic field, parameters of the acoustic field, energetic relationship, wave energy, power, sound intensity, levels of acoustic quantities.

Sources of acoustic waves, sources classification, criterion of classification, theoretical sound sources, mechanical and electrical and technological and aero-dynamical sources.

Fundamental wave phenomenon, radiation and propagation of the sound in free space, wave reflection, echos phenomenon, wave diffraction,. deflection, dispersion, wave interference, sound absorbtion by environment and porous materials.

Mathematical description of the wave phenomenon, wave equation, Helmholtz equation.

Analysis of the acoustic signals in frequency domain, falks analysis, analysis in amplitude and time domains, Wiener-Chinczyn equation.

Psychoacoustic principles, Weber-Fechner low, acoustic pressure level, area of sound audible, frequency band, Ohm low, tone and complex sound loudness.

Methods of decreasising of the level noise, mufflers noise, noise-absorbing casing, noise-hermetic cabine, acoustic bariers.

Materials, structures and sound-absorbtion products.

Description of the basis acoustic quantities, anechoic and echos chamber.




Classes:


Laboratory:

examples of the calcultions and measures of the materials acoustic parameters, measurement of the acoustic quantities in environment.



Project:






Objectives of the course

Acquiration of the basic acoustic phenomenon in environment, measures of the materials acoustic parameters and measures of the acoustic quantities in environment




Examination method

Lb - projekt

L - test







Bibliography

[1] A. Dobrucki, Podstawy akustyki, Wydawnictwa Politechniki Wrocławskiej, Wrocław, 1992

[2] Z. Engel, Ochrona środowiska przed drganiami i hałasem, PWN, Warszawa, 2001

[3] F.A. Everest, Podręcznik akustyki, Sonia Draga, Katowice, 2004

[4] R. Makarewicz, Hałas w środowisku, OWN, Poznań, 1996






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Head of Department signature




Dean signature





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