Equipment II
Aperçu des sections
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- Understanding the principles of acoustic comfort.
- Acquiring general knowledge of acoustic insulation in buildings.
- Mastering the acoustic treatment of spaces based on their geometry and the appropriate selection of building materials.
- Mastering acoustic insulation of buildings against environmental noise using acoustic barriers.
- Mastering acoustic insulation of buildings against airborne noise and impact noise.
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Course Instructor in Charge : Dr. Samir GUEZZEN
Contact: samir.guezzen@univ-tlemcen.dzFaculty of Technology
Department of Architecture
Program: Architecture
Level: A3
Specialization: Architecture
Teaching Unit: Methodological
Coefficient: 2
Eliminatory Grade: < 5/20
Required Weekly Workload: 3 hours
On-site Schedule:
- Lecture: Tuesday from 10:00 to 11:30
- Tutorial (TD): Monday from 8:30 to 10:00
Assessment Method: Final Exam 60%, Continuous Assessment (CA) 40%
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Basics of building physics, fundamentals of mathematics, vibration mechanics, and general physics
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Chapter 1: Introduction to Building Acoustics
Chapter 2: Physical and Physiological Characterization of Sound and Noise – Sound Propagation in Free Field
Chapter 3: Sound Phenomena in Enclosed Spaces – Acoustic Treatment
Chapter 4: Acoustic Insulation in Buildings
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Chapter 1: Introduction to Building Acoustics
1.1. Definition and historical background
1.2. Acoustic comfort
1.3. Basic concepts of sound and noise
1.4. Sound propagation
1.5. Characteristics of sound: acoustic intensity, frequency, period, wavelength, and speed of sound
Chapter 2: Physical and Physiological Characterization of Sound and Noise – Sound Propagation in Free Field
2.1. Sound pressure
2.2. Sound pressure level
2.3. Sound intensity level
2.4. Sound power level
2.5. Combination of multiple sound levels
2.6. Octave, octave band, and third-octave band
2.7. Weighted sound levels
2.8. Equal-loudness contours: Fletcher diagram
Chapter 3: Sound Phenomena in Enclosed Spaces – Acoustic Treatment
3.1. Sound source near a surface: reflection, transmission, and absorption
3.2. Sound propagation in enclosed spaces
3.3. Sound intensity and levels in a room: direct and reverberant sound
3.4. Reverberation time – Sabine formula
3.5. Acoustic treatment of rooms – use of sound-absorbing materials
Chapter 4: Acoustic Insulation in Buildings
4.1. Protection against environmental noise using acoustic barriers
4.2. Impact noise insulation
4.3. Airborne sound insulation:4.3.1. Modes of sound transmission in buildings: direct, flanking, and indirect paths
4.3.2. Sound reduction index of a partition
4.3.3. Mass law and experimental frequency law
4.3.4. Methods for evaluating the sound insulation performance of partitions -
Specific Objectives
At the end of this course, students will be able to understand the definition of sound and its historical development, recognize the importance of acoustic comfort in buildings, and identify the physical characteristics of sound such as frequency, amplitude, wavelength, and sound propagation. They will also be able to relate these concepts to practical applications in architectural acoustics, improving sound quality and ensuring a comfortable acoustic environment.
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This chapter covers the energetic characteristics of sound through the following points: acoustic impedance, acoustic pressure, surface power, sound intensity, and the propagation of sound from one medium to another. It provides a general overview of the physical quantities used to describe the energy carried by a sound wave, as well as its behavior during propagation and its interaction with different media.
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This chapter addresses the acoustic level, which makes it possible to express sound intensity or sound pressure on a logarithmic scale in decibels (dB), thereby facilitating the representation of the wide range of sounds perceptible to the human ear. It also covers the summation of multiple acoustic levels, which cannot be performed through simple arithmetic addition due to this logarithmic scale, but instead follows a specific law that accounts for the energy contributions of each sound source. Thus, this chapter helps in understanding how to evaluate and combine multiple noise sources in real situations.
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This course is devoted to sound propagation in free space, presenting the general principles of how sound spreads in a medium without obstacles or disturbances. It highlights the overall behavior of sound waves during their propagation and the variation of their level with distance from the source, providing a fundamental basis for understanding propagation phenomena before studying more complex real-world cases.
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This course is devoted to sound propagation in enclosed spaces, reverberation, and acoustic correction, presenting the general principles of sound wave behavior inside rooms. It highlights the influence of reflections on surfaces and the accumulation of sound energy, as well as their impact on sound levels and the acoustic quality of a space. It also introduces the concept of acoustic correction, aimed at improving sound comfort by reducing reverberation effects and optimizing surface absorption.
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This course is devoted to acoustic insulation and presents the fundamental principles used to reduce sound transmission between different spaces. It provides a general overview of how noise propagates through partitions and the methods used to limit its transmission, in order to improve acoustic comfort and meet insulation requirements in building and industrial environments.