20801746 - ACOUSTICS AND AMBIENT LIGHTING TECHNIQUE

The educational objectives consist in acquiring the physical and psycho-physical basic concepts underlying sound and light perception mechanisms, in the knowledge of acoustical and photometric quantities used in the two areas, of the measuring instruments, of the sound propagation in enclosures and open spaces, of the main types of artificial light sources and of daylighting, of sound-absorbing materials and sound insulation. This represents the basis for the design of the acoustical and luminous environment, both by using simplified calculation methods, and by resorting to the use of dedicated software.
teacher profile | teaching materials

Programme

Acoustics:
Acoustical parameters.
Wave equation and speed of sound.
Solutions of the wave equation: plane and spherical waves.
Acoustical impedance.
Psychoacoustics: the ear, normal audiogram.
Sound levels.
Acoustical analysis (octave bands and one-third octave bands)
Weighting curves.
Sound level meters.
Open-space acoustics.
Acoustical barriers.
Sound in enclosures.
Reverberation time (Sabine formulation and Eyring formulation).
Sound-absorbing materials.
Transmission of sound through partitions. Mass law.

Lighting design:
Radiation of energy.
Radiometric and photometric parameters.
The eye. Visual performance.
Measurement of the photometric parameters.
Colorimetry.
Light sources: incandescent, discharge and LED lamps.
Lighting fixtures.
Daylighting.
Extended sources (linear, tubular and rectangular sources).
The lumen method.
The radiosity method.

Core Documentation

-A. B. Coppens, L. E. Kinsler, J. V. Sanders, A. R. Frey, Fundamentals of acoustics (4th edition), Ed. Wiley
-Gino Moncada Lo Giudice e Silvio Santoboni, Acustica, Ed. CEA
-Gino Moncada Lo Giudice e Andrea De Lieto Vollaro, Illuminotecnica, Ed. CEA


Reference Bibliography

-P. Cavalletti, A. Chiari, S. Bergero, M. Bernardoni, Applicazioni pratiche di acustica, Ed. Dario Flaccovio -Pietro Palladino, Lezioni di illuminotecnica, Ed. Tecniche Nuove

Type of delivery of the course

Lectures and exercises

Attendance

Attendance to lessons is not compulsory but is strongly recommended

Type of evaluation

The exam consists in a written test and an oral test. The written test lasts two hours and requires the solution of acoustic and lighting engineering exercises. Passing the written test gives access to the oral test. Students can take intermediate assessment tests. If they are successful in the intermediate tests, they are exempted from the written test. Alternatively, they can choose to replace one of the two intermediate assessment tests with the preparation of an essay on a topic to be agreed with the teacher.