Applied Acoustics

Recommended Prerequisites

Mathematical Analysis I, Mathematical Analysis II, Mechanics 1, Wave phenomena, Eletromagnetism, Thermodynamics, Building Physics.

Teaching Methods

The classes will be mainly theoretical and practical, where concepts and theory will be lectured, using projection audio-visual media, as well as practical application exercises will be demonstrated. When possible, questions in the same topics will be addressed to the students leading them to new knowledge. In the same classes, application problems will be solved by the students, under the teacher supervision. There will be a laboratorial class, permitting demonstration and operation with equipment and procedures used in acoustic tests.

Learning Outcomes

In the curricular unit “Applied Acoustics”, in the Construction Sciences path, the acoustic concepts introduced in the previous curricular unit “Building Physics” will be thoroughly addressed and the scope of knowledge will be extended in order to enable students to:

- understand the physical phenomena of sound propagation;

- know and apply the national legislation on environmental noise and building acoustics;

- know the main normative documents for tests in building acoustics and for measurements of environmental noise;

- understand how the different materials and constructive solutions perform in relation to the propagation of sound.

Acquiring capabilities in synthesis and analysis, oral and written communication, problems solving, critic reflection, autonomous learning, and practical application of theoretical knowledge.

Work Placement(s)

No

Syllabus

1. Introduction

2. General concepts on acoustics

• Sound propagation; Response of the human ear; Time and frequency domains analyses; Measuring and testing equipment

3.Noise of human activity 

• Noise legislation; Equipment, industrial and traffic noise; Soil vibration

4. Room acoustics 

• Sound field inside a closed room; Reverberation time; Absorbing materials

5. Airborne sound insulation 

• Measuring methods and simplified prediction models for different kinds of building elements; Indirect sound transmission

6. Impact noise

• Measuring methods and prediction models; Impact sound insulation technologies for different types of floors

7. Portuguese building acoustics national regulation (RRAE)

• RRAE, republished by DL nº 96/2008, from 09/June

8. Traffic noise analysis

• Prediction models based on simplified formulas; Minimizing traffic noise effect; Methodologies for acoustic barriers analyses; Simplified calculation procedures. 

Assessment Methods

Assessment
Synthesis work: 20.0%
Frequency: 80.0%

Bibliography

[1] Tadeu, A., Mateus, D., António, J., Godinho, L., Amado Mendes, P., "Acústica Aplicada", apontamentos de apoio à disciplina, DEC-FCTUC, 2010.

[2] Patrício, J., "Acústica nos Edifícios", 7ª ed., Engebook, 2018.

[3] Vigran, T.E., "Building Acoustics", Taylor & Francis, 2008.

[4] Domingues, O., "A acústica nos edifícios: materiais e sistemas absorventes sonoros: coeficientes de absorção sonora", LNEC, 2005.

[5] Domingues, O., "A acústica nos edifícios: pavimentos e revestimentos de pavimentos, isolamento a sons de percussão", LNEC, 2008.

[6] Harris, C.M. (ed.), "Handbook of noise control", McGraw-Hill, 1957.

[7] Josse, R., "Notions d'acoustique : à l'usage des architectes, ingénieurs et urbanistes", Ed. Eyrolles, 1977.

[8] Meisser, M., "Acustica de los edificios", Ed. Técnicos Asociados, 1973.

[9] Martins da Silva, P., "Acústica de edifícios", Informação técnica. Edifícios, 8, LNEC, 1978.

[10] Martins da Silva, P., "Projecto de condicionamento acústico de edifícios", LNEC, 2006.