Modelling and Experimental Measurements in Acoustics

Section 1 Ambient noise problems: Evaluation of the audibility of acoustics signals in industrial areas; Analysis of the acoustic climate along main streets in Villa San Giovanni; An angular diffusivity geometrical model to predict urban sound diffusion. Section 2 Environmental noise: Acoustic map of Pamplona, Spain. Percentile of people affected by environmental noise; A study case of noise coming from road yard machines: experimental tests and theoretical formulas to evaluate sound impact on people; A methodology for impact assessment and acoustic monitoring of quarry activities; Diffraction of sound around barriers: comparison between procedures of forecasting in sound propagation in a quarry; A study about the acoustical impact in high traffic urban streets. Section 3 Building acoustics: A proposal to improve the acoustics in Fernandina churches, The example of Magdalena Church in Cordoba (Spain); Sound field in several theatres of Cadiz, before and after its restoration; Acoustics of domestic boilers; Comparison of acoustic insulation provided by infinite plane versus circular closed walls Laboratory simulation of diffuse pressure fields; An intensimetric method to localize secondary sources. Section 4 Industrial noise and vibrations: Evaluation of the Lep,d index in a dairy of Rome; Application of the modal expansion technique to improve the results of FEM/BEM acoustic radiation; Aerosol coagulation on nonlinear oscillations in a closed tube. Section 5 Sound absorption barriers: Sound absorbing concrete barrier; Some interesting features of the interaction of a bounded ultrasonic beam with a doubly corrugated interface between a solid and a liquid; Sound absorption coefficient changes of acoustical plates made of expanded perlite in moist environment. (part contents)