Course detail

Room Acoustics

FAST-CH052Acad. year: 2018/2019

The acoustic theory of an enclosed space. Direct and reflected sound wave field. Acoustic comfort criteria for buildings. Noise characteristics in the room acoustics, noise and vibration. Basic calculations of noise reduction, ways of noise reduction. Noise measuring instruments, measuring methods in the room acoustics.

Department

Institute of Building Structures (PST)

Learning outcomes of the course unit

Knowledge overview of all acoustic fields. The issue of noise in the work environment, noise assessments and noise reduction studies in municipal buildings. Basic knowledge of architectural acoustics including sound absorbing materials and their application for optimisation of a room reverberation time.

Prerequisites

Fundamentals of architectural acoustics.

Co-requisites

Sound sources, sound wave terminology, physical parameters of sound, sound field quantities.

Recommended optional programme components

Study of technical literature, participation in seminars and conferences.

Recommended or required reading

Not applicable.

Planned learning activities and teaching methods

The course is taught through lectures, practical classes and self-study assignments. Attendance at lectures is optional, but attendance at classes is compulsory.

Assesment methods and criteria linked to learning outcomes

Completed and revised reports, attendance, on-going work during the practices, passing written and oral exams.

Language of instruction

Czech

Work placements

-

Course curriculum

1. Sound field in an enclosed space, field of direct and reflected sound waves. Uniform distribution of sound pressure levels in rooms. Requirements for room acoustics - speech intelligibility, optimal reverberation time, diffusive sound field. Acoustics wave, geometric and statistical theory. Design of optimal size and shape of the room in accordance with the theory of wave and geometric acoustics.
2. Materials and components for room acoustics. Evaluation of reverberation time in terms of speech intelligibility, design modifications, detailed solution.
3. Room acoustics measurement methodology.
4. Room simulations in software ODEON.
5. Sound insulating properties of building constructions - principle of sound wave propagation, requirements for sound insulation. Measurement methodology for sound insulation properties of building constructions and elements.
6. Design methods and evaluation of building constructions in terms of sound insulation. Single and multi-layer constructions, internal and external building constructions. Materials and components for air-borne and impact sound insulation in vertical and horizontal constructions, detail solution.
7. Urban sound field, the noise sources in the outdoors, CZ Government Regulation No. 272/2011, about health protection against harmful effects of noise and vibration.
8. Methodology for evaluation of noise from traffic, simulation model, measurement methodology.
9. The evaluation methodology of stationary noise sources, calculation procedure.
10. Noise reduction requirements and solutions, urban and room acoustics levels, detail solutions.

Aims

To get a complete and detailed understanding of all acoustics topics. Solving the issue of noise at working places, noise study designs and noise reduction in a communal space. Designing in a field of room acoustics, an option of suitable absorptive materials.

Specification of controlled education, way of implementation and compensation for absences

Extent and forms are specified by guarantor’s regulation updated for every academic year.

Classification of course in study plans

  • Programme N-P-C-SI (N) Master's

    branch S , 2. year of study, winter semester, 5 credits, compulsory-optional

  • Programme N-P-E-SI (N) Master's

    branch S , 2. year of study, winter semester, 5 credits, compulsory-optional

  • Programme N-K-C-SI (N) Master's

    branch S , 2. year of study, winter semester, 5 credits, compulsory-optional

Type of course unit

 

Lecture

26 hours, optionally

Teacher / Lecturer

Syllabus

1. Sound field in an enclosed space, field of direct and reflected sound waves. Uniform distribution of sound pressure levels in rooms. Requirements for room acoustics - speech intelligibility, optimal reverberation time, diffusive sound field. Acoustics wave, geometric and statistical theory. Design of optimal size and shape of the room in accordance with the theory of wave and geometric acoustics.
2. Materials and components for room acoustics. Evaluation of reverberation time in terms of speech intelligibility, design modifications, detailed solution.
3. Room acoustics measurement methodology.
4. Room simulations in software ODEON.
5. Sound insulating properties of building constructions - principle of sound wave propagation, requirements for sound insulation. Measurement methodology for sound insulation properties of building constructions and elements.
6. Design methods and evaluation of building constructions in terms of sound insulation. Single and multi-layer constructions, internal and external building constructions. Materials and components for air-borne and impact sound insulation in vertical and horizontal constructions, detail solution.
7. Urban sound field, the noise sources in the outdoors, CZ Government Regulation No. 272/2011, about health protection against harmful effects of noise and vibration.
8. Methodology for evaluation of noise from traffic, simulation model, measurement methodology.
9. The evaluation methodology of stationary noise sources, calculation procedure.
10. Noise reduction requirements and solutions, urban and room acoustics levels, detail solutions.

Exercise

26 hours, compulsory

Teacher / Lecturer

Syllabus

1. Measurement of reverberation selected classrooms according to requirements of room acoustics.
2. Design of classroom modifications on the basis of the acoustic measurements, optimization of sound absorptive materials and their application in the room, detail solutions. Assessment of the reverberation time - calculation method of reverberation time in terms of speech intelligibility.
3. Laboratory measurement of sound absorption coefficient of selected porous sound absorptive materials, datasheet from measurements.
4. – 5. Simulation of the classroom model and its verification, software ODEON.
6. Measurements of airborne and impact sound insulation of a floor structure in situ. Evaluation and verification of the measured construction.
7. Design of noise protections and modifications, detail solutions.
8. Optimal design of building constructions in terms of sound insulation - calculation procedures for the newly design building project documentation.
9. Measurement of noise from traffic, noise report.
10. Noise report according to applicable methodologies.

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