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| ENVT0859-2 | Environmental acoustics
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| Duration : | 18h Th, 18h Pr |
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| Number of credits : |
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| Lecturer : | Jean‑Jacques Embrechts |
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Language(s) of instruction :
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| French language |
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Course contents :
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| Course description :
This course includes an introduction to fundamental acoustics and a description of the techniques used to control and/or reduce noise in the environment.
Contents :
Fundamentals of acoustics, psychoacoustics and sound level measurements, evaluation of discomfort and annoyance, environmental regulations, traffic noise (road and airport), some facts about acoustical absorption and insulation. |
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Learning outcomes of the course :
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| At the end of the course, it is intended that the student will be able to:
- understand the basics of sound propagation and its different modes,
- evaluate and measure sound levels in decibels and combine the contributions of several sound sources,
- understand the basics of psychoacoustics and the origin of the dBA,
- understand and apply some noise indicators describing discomfort, in particular equivalent noise levels,
- apply the method of expertise ISO 1996 and the environmental noise regulation used in Wallonia,
- understand the typical phenomena in outdoor sound propagation,
- compute the attenuation of noise barriers in simple situations,
- understand and apply some indicators of airport noise,
- understand the basics of acoustical absorption and insulation. |
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Prerequisites and co-requisites/ Recommended optional programme components :
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| Basic physics and mathematics. |
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Planned learning activities and teaching methods :
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| First of all, this course is organised in modules, each of them consisting in a general presentation ex cathedra, followed by applications and exercices with the teacher. Sometimes, these exercices are included in the general presentation.
Laboratory exercises are also organised for the students, during a session that will take place in Liege (laboratory of acoustics).
It is recommended that the students actively participate to the general presentation by answering questions and formulate critics. Also during the exercices, the students must be equipped with a calculator.
It is also recommended to read and understand the theory and exercices of the previous lesson before assisting to the next one. Additional exercices will also be proposed: it is strongly recommended that the students try to solve them by themselves and ask the teacher to evaluate their solution. |
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Mode of delivery (face-to-face ; distance-learning) :
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| Face-to-face learning |
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Recommended or required readings :
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| Lecture notes will be available by the teacher.
They can also be obtained at the "Centrale des Cours" of engineering students:
(in french)
- Acoustique Appliquée: fondements et lutte contre le bruit (J.J. Embrechts 2008).
Additional (non mandatory) reading is the following book:
(in french)
- Acoustique du bâtiment (J.J. Embrechts, 2008). |
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Assessment methods and criteria :
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| The evaluation is first based on an oral examination during which the student will answer to questions concerning the theoretical matters that have been exposed during the presentations ex-cathedra. He/she will also solve one or two exercises (bringing a calculator is essential).
All books and notes can be consulted for the solution of exercices, except if otherwise stated. |
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Organizational remarks :
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| The lectures and laboratory sesssions are organised during the autumn semester.
Site: the Campus of Arlon for most of them, and the laboratory of acoustics (Montefiore Institute, Sart-Tilman B28) for the laboratory sesion. |
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Contacts :
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| J.J. Embrechts
jjembrechts@ulg.ac.be |
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