The project of the acoustic restoration of an historical conference hall, approved by the Ministry of Italian Cultural Heritage, authorised only the application of woven materials, easy to be removed and not modifying the architectonical characteristics of the hall. This case study allowed the opportunity of investigating the acoustical property of woven materials for pavement and walls. In this paper 12 different samples of carpet have been experimentally investigated by means of the impedance tube method. The effect of the thickness and composition has been analysed and the best absorption sample has been identified. In addition, since textile materials present a good sound absorption, mainly at high frequencies, but not sufficient at low frequency, a multilayer system has been proposed. With the double aim of protecting the existing marble floor and of improving acoustical properties at low frequencies a two - layers system, composed of carpet and felt, has been considered. Two different thicknesses of felt have been tested and the optimal two - layers configuration has been outlined
Application of woven materials for the acoustic restoration of monumental halls
RICCIARDI, PAOLA;
2011-01-01
Abstract
The project of the acoustic restoration of an historical conference hall, approved by the Ministry of Italian Cultural Heritage, authorised only the application of woven materials, easy to be removed and not modifying the architectonical characteristics of the hall. This case study allowed the opportunity of investigating the acoustical property of woven materials for pavement and walls. In this paper 12 different samples of carpet have been experimentally investigated by means of the impedance tube method. The effect of the thickness and composition has been analysed and the best absorption sample has been identified. In addition, since textile materials present a good sound absorption, mainly at high frequencies, but not sufficient at low frequency, a multilayer system has been proposed. With the double aim of protecting the existing marble floor and of improving acoustical properties at low frequencies a two - layers system, composed of carpet and felt, has been considered. Two different thicknesses of felt have been tested and the optimal two - layers configuration has been outlinedI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
