Course code Arhi6014

Credit points 3

Engineering Acoustics

Total Hours in Course120

Number of hours for lectures18

Number of hours for seminars and practical classes12

Number of hours for laboratory classes6

Independent study hours84

Date of course confirmation23.03.2021

Responsible UnitDepartment of Architecture and Building

Course developer

author prof.

Raitis Brencis

Dr. sc. ing.

Course abstract

In the course of the study, the students of the “Constructuralist” acquire knowledge of technical acoustics and vacuum-glazing, forecasting noise distribution in buildings and building. Students must learn basic principles for acoustic selection and calculation of equipment, structures and finishes.

Learning outcomes and their assessment

After course studies, the student will have knowledge of sound processes in different environments (lectures); skills on the performance of vacuum calculations in indoor acoustics, sound insulation and environmental acoustics (practical works); competence in the performance of acoustic measurements (laboratory works).

Course Content(Calendar)

1. Sound, physical values that describe it. Terminology, parameters and units of measurement for the distribution of sound. Types of waves, sounds and vibration spreads in different substances and environments. The main elements of the wave equations and their practical solutions - spherical, cylindrical, flat waves. (lecture 2 h);
2. Types of sound sources, their sound standardised parameters (sound power, spectrum, directionality, time function). (lecture 1 h);
3. The subjective perception of sound, the sensitivity frequency characteristic of the human ear. Standardised weighting curves A, C, D. Resonance, interference and diffraction. Vibration. Its impact, assessment and isolation. (lecture 1 h, Practical works 2 h);
4. Acoustic energy transformation in its interaction with material barrier. (lecture 1 h);
5. Acoustics, parameters, setting them up. Reverberation, sound 3-D, articulating. (lecture 2 h, Practical works 2 h);
6. Acoustic design and measurement of premises. (lectures 2 h, Applied works 2 h, Laboratory works 3 h);
7. Insulation of the sounds of the structures for airborne sound, impact noise, structural noise. LBN 016-15. (lectures 3 h, Practical works 3 h, Laboratory works 3 h);
8. Noise generation mechanisms for equipment. Mechanical, hydro and aerodynamic noise. (lecture 1 h, Practical works 1 h);
9. Anti-noise solutions for equipment, principles and capabilities for their design. (lecture 1 h, Practical works 2 h);
10. Building acoustics. The nature of the sound is in construction, noise maps. (lecture 2 h);
11. Environmental noise measures. (lecture 2 h).

Requirements for awarding credit points

A study course can be settled if a successful course project has been developed and defended, all practical works have been successfully developed. The rating is posted as a cumulative indicator between the course project and the practical works.

Description of the organization and tasks of students’ independent work

Students continuously perform calculations of practical work, process and analyze the data generated by the laboratory, and perform calculations.

Criteria for Evaluating Learning Outcomes

The rating is posted as a cumulative indicator between the course project and the practical works.

Compulsory reading

1. Zabrauskis A. Būvakustika.Teorija un realitāte [tiešsaiste]. 10. izdevums. Rīga, 2014. 91 lpp. [Skatīts 10.06.2015.]. Pieejams: http://www.akustika.lv/buva2014.pdf
2. Tomariņš K. Elektroakustika. Lekciju piezīmes. Rīga: Rīgas Tehniskā universitāte, 2003.
3. Long M. Architectural Acoustics. United Kingdom: Elsevier Academic press, 2006., 873 p.

Further reading

1. Leslie L. Doelle L. Environmental Acoustics. New York: McGraw-Hill, 1972. 246 p.

Notes

Compulsory course for the Professional higher education master study programme Civil Engineering