Noise spectra measurements have been carried out in 27 sites located at Genova and Livorno ports in Italy. By means of a normalisation procedure, noise data have been converted into a single typical port noise spectrum (Normalized Port Noise Spectrum - NPNS). NPNS is a A weighted distance insensitive spectrum and has been proven to be close to each port noise spectrum. NPNS may be used to evaluate 1/3 octave band noise spectrum due to a port source when only A weighted noise level is known. An adaptation term Cport has been proposed to evaluate sound insulation of buildings exposed to port noise. An experimental verification shows that a building wall sound reduction index 5 may be properly evaluated by means of the proposed Cport.
Port and Maritime Plant Noise: Characterization and Normalization.
ROSSI, Federico;BURATTI, Cinzia
2000
Abstract
Noise spectra measurements have been carried out in 27 sites located at Genova and Livorno ports in Italy. By means of a normalisation procedure, noise data have been converted into a single typical port noise spectrum (Normalized Port Noise Spectrum - NPNS). NPNS is a A weighted distance insensitive spectrum and has been proven to be close to each port noise spectrum. NPNS may be used to evaluate 1/3 octave band noise spectrum due to a port source when only A weighted noise level is known. An adaptation term Cport has been proposed to evaluate sound insulation of buildings exposed to port noise. An experimental verification shows that a building wall sound reduction index 5 may be properly evaluated by means of the proposed Cport.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
