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Acoustic absorption increase by placing absorbent material in pieces with and without back air layer

Identifiers
URI: http://hdl.handle.net/20.500.12251/1656
ISBN: 978-848798531-7
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Author
Caballol Bartolomé, David; Pérez Raposo, Álvaro
Date
2019
Subject/s

Reverberación

Aislamiento acústico

Material de construcción

Acústica

Sistemas constructivos

Unesco Subject/s

2201.02 Acústica Arquitectónica

2201.04 Física de la Música

2201.01 Propiedades Acústicas de Los Sólidos

3313.04 Material de Construcción

Abstract

The reverberation time of a reverberation room with an absorbent material is proved against different layouts of the material and with and without a combination of different back air layers, compared to those results where the same material is placed as a single piece. With the analysis of the obtained data, a regression model is established in order to predict, for certain frequencies, the improvement produced in the reverberation time of a room, using the same amount of material by placing it in pieces separated from each other, instead of in one piece, and including different distances from the wall as a variable. It becomes a simple on work predictive tool which allows to estimate the alteration in the reverberation time due to the separation of the patches. The model is validated and proven to be robust and it is shown to be applicable to a variety of materials. © INTER-NOISE 2019 MADRID - 48th International Congress and Exhibition on Noise Control Engineering. All Rights Reserved.

The reverberation time of a reverberation room with an absorbent material is proved against different layouts of the material and with and without a combination of different back air layers, compared to those results where the same material is placed as a single piece. With the analysis of the obtained data, a regression model is established in order to predict, for certain frequencies, the improvement produced in the reverberation time of a room, using the same amount of material by placing it in pieces separated from each other, instead of in one piece, and including different distances from the wall as a variable. It becomes a simple on work predictive tool which allows to estimate the alteration in the reverberation time due to the separation of the patches. The model is validated and proven to be robust and it is shown to be applicable to a variety of materials. © INTER-NOISE 2019 MADRID - 48th International Congress and Exhibition on Noise Control Engineering. All Rights Reserved.

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