CFU
7
Length
14 Weeks
Semester DD
Second
1.Foundations
Waves in elastic fluids and solid bodies. Wave equation and velocity of sound. Intensity and sound levels. Review of harmonic analysis - spectral distributions. Emission, propagation and detection of sound. Reflection, absorption and scattering of sound. Interference and diffraction - Standing waves. Sound fields in closed environments: near field and far (diffused) field. Transmission of sound and vibrations. Linear systems - Electrical-Mechanical-Acoustic equivalence. Transfer function - Frequency and time response.
Networks, filters and linear transducers. The Ear and the psychoacoustics. Microphones, loudspeakers, recording and reproduction of sound . Digital audio formats, audio compression. Musical instruments and concert halls.
2. Applications
Review of anagogic electronic and electro-acoustic, equivalent linear. Networks. Computer simulation of electro-acoustical systems. Electrical and acoustical measurements, frequency and time response, distortion. Loudspeaker systems: design criteria and analysis. Measures on loudspeakers: MLS and sinusoidal techniques, design tests. Microphones and recording techniques. Acoustics of rooms and concert halls. Measurement of reverberation and standing waves of rooms. Objective and subjective criteria of evaluation of a listening room. Noise and sound pollution.
LEARNING OUTCOMES:
Introduction to physical acoustics with applications to electro-acoustics, architectural acoustics and Psycho-acoustics.
KNOWLEDGE AND UNDERSTANDING:
Students must have a thorough understanding of the physical foundations of acoustics and related application problems.
The verification of knowledge and comprehension skills is done through written and oral tests.
APPLYING KNOWLEDGE AND UNDERSTANDING:
Students must be able to identify the essential elements of a problem of Acoustics and knowing how to model it, making the necessary approximations.
They must be able to adapt existing or new models to specific applications.
MAKING JUDGEMENTS:
Students must be able to perform analytical calculations or numerical simulations on their own.
Develop the ability to perform bibliographic searches and to select interesting materials, in particular on the WEB.
These skills are acquired during the study for exam preparation, deepening some specific topics also with the reading of articles in scientific journals.
COMMUNICATION SKILLS:
Students must be able to work in an interdisciplinary group.
Be able to present your study or the results of a bibliographic search to a specialist audience
and to a general audience for public outreach.
LEARNING SKILLS:
Students must be able to tackle new applications of the theory through a self-study.