Applied Acoustics 

Faculty of Cultural Heritage Preservation – Ravenna

Il corso nell’A.A. 2011-12 è mutuato dall’analogo corso DAMS


Contenuto di questa pagina:

Programma del Corso

Orari delle lezioni (anno 07/08)

Orario di ricevimento alunni

Date degli appelli di esame

Gli studenti

Tesi di Laurea

Modalità di esame

Avvisi e Comunicazioni


Materiale Didattico


Programma del Corso

1 Fundamentals

Physical acoustics. Harmonic oscillator. Fourier analysis. D'Alembert and Helmholtz equations. Acoustic quantities. Sound speed in various media. Standing waves, interference, beats. The basics of classical harmony. Sound rays. Absorption, reflection, transmission and diffusion at an interfacie. Sound levels, decibel and spectra. Sounds signals. Decibel. Frequency analysis. Spectra. (1/n) octave band filters. Frequency and time weightings. Sound level metrics.

Basics of linear systems theory. The linear system. Impulse response, frequency analysis. Shannon theorem. White, Pink noise. Electric analogy

Psychophysical acoustics. Human hearing system. Psychophysical aspects and their evaluation. Annoyance and hearing damage.

Acoustics in enclosures. Normal modes and coupled cavities. Reverberation rooms and anechoic rooms. Reverberant and direct field.

Acoustic properties of materials Sound insulation. Mass law. Resonances and coincidence. Internal loss. Double and multilayer walls. Mechanical vibrations. Basic physics. Resonance. Transmissibility. Acoustic absorption coefficient.

2. Instrumentation

Microphones. Accelerometers. Filters. Sound level meters. Real time and FFT analysers. Digital recording and reproduction. AD/DA conversion. Wave editor softwares.

3. Musical Instruments

Percussion Instruments (drums, plates). String Instruments, (piano, violin, guitar, cello). wind Instruments ( brass Instruments, Reed Instruments, Clarinet, Organ), electronic Instruments (synthesizers; MIDI standard). The human voice. The sound production

4. Psycological aspect of music

History of music notation: Pythagorean notation, Zerlino's notation, the well-tempered (equabile) notation. Pitch, Loudness, Timbre, Rythm.

5. Applications

Acoustics of musical Instruments. Acoustical and non-acoustical criteria: vibrations, normal modes, cut-off frequencies in sound tubes. Dendrocronology. Holographic techniques.

Room acoustics. Speech intelligibility. Concert hall acoustics:. Beranek's work. Early reverberation times. The Schroeder's integral. Energetic and Spaciousness parameters. Ando's theory. The contemporary research. Physical and numerical models. Auralization. Psycoacoustics.

Noise. Laws and technical standards. Personal exposure. Noise control at the source. Hearing protectors.Environmental impact assessment. Noise from industrial plant. Road, railway and airway traffic noise.

5. Laboratory Measurement Procedures

Acquiring and processing IRs in Theatres. Reverberation time measurements. Sound absorption measurements. Binaural recording techniques. Modal analysis techniques. Examples of measures on ancient musical Instruments.

6. Research

A musical Instrument acoustic aspect.


Time Table (year 08/09)


Week Day





 9.00 - 11.00

Aula 2 - Ravenna



10.00 - 11.00

Aula 6 - Ravenna




The Faculty of Cultural Heritage Preservation