On the Use of Perforated Sound Absorption Systems for Variable Acoustics Room Design

An important challenge for acoustic engineers in room acoustics design is related to the acoustic performance of multi-purpose auditoriums, which are typically designed to suit several performance requirements. With this intent, the analysis of several scenarios is usually performed individually, an...

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Autores principales:	Andreia Pereira, Anna Gaspar, Luís Godinho, Paulo Amado Mendes, Diogo Mateus, Jesus Carbajo, Jaime Ramis, Pedro Poveda
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	room acoustics sound absorption analytical approach ray tracing perforated sound absorbent systems variable acoustics design Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/c21e1b4cdacf484da64c7746375b9aae
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spelling	oai:doaj.org-article:c21e1b4cdacf484da64c7746375b9aae2021-11-25T17:00:07ZOn the Use of Perforated Sound Absorption Systems for Variable Acoustics Room Design10.3390/buildings111105432075-5309https://doaj.org/article/c21e1b4cdacf484da64c7746375b9aae2021-11-01T00:00:00Zhttps://www.mdpi.com/2075-5309/11/11/543https://doaj.org/toc/2075-5309An important challenge for acoustic engineers in room acoustics design is related to the acoustic performance of multi-purpose auditoriums, which are typically designed to suit several performance requirements. With this intent, the analysis of several scenarios is usually performed individually, and then an acceptable solution, that may be adapted to several situations, is selected. One way of providing a more appropriate acoustic performance for each function of the auditorium is using variable sound absorption techniques to control reverberation and other relevant acoustic phenomena associated to sound perception. In this paper, the acoustic behavior of a perforated system that may be suitable for achieving a variable acoustic solution for room acoustic design is addressed. In the design of a cost-effective solution, the surface appearance is kept unchanged, while variable acoustic behavior is achieved either by closing the holes in the back face of the perforated panel or by placing a porous material in varying positions inside the backing cavity, thus accomplishing different acoustic requirements within a multipurpose auditorium. An analytical approach, based on the transfer matrix method is employed for preliminary acoustic sound absorption assessment provided by the system and to develop optimized solutions. Diffuse sound absorption is then computed and used to simulate, by the ray-tracing method, the acoustic behavior of a multipurpose auditorium to demonstrate efficient acoustic performance for different types of use.Andreia PereiraAnna GasparLuís GodinhoPaulo Amado MendesDiogo MateusJesus CarbajoJaime RamisPedro PovedaMDPI AGarticleroom acousticssound absorptionanalytical approachray tracingperforated sound absorbent systemsvariable acoustics designBuilding constructionTH1-9745ENBuildings, Vol 11, Iss 543, p 543 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	room acoustics sound absorption analytical approach ray tracing perforated sound absorbent systems variable acoustics design Building construction TH1-9745
spellingShingle	room acoustics sound absorption analytical approach ray tracing perforated sound absorbent systems variable acoustics design Building construction TH1-9745 Andreia Pereira Anna Gaspar Luís Godinho Paulo Amado Mendes Diogo Mateus Jesus Carbajo Jaime Ramis Pedro Poveda On the Use of Perforated Sound Absorption Systems for Variable Acoustics Room Design
description	An important challenge for acoustic engineers in room acoustics design is related to the acoustic performance of multi-purpose auditoriums, which are typically designed to suit several performance requirements. With this intent, the analysis of several scenarios is usually performed individually, and then an acceptable solution, that may be adapted to several situations, is selected. One way of providing a more appropriate acoustic performance for each function of the auditorium is using variable sound absorption techniques to control reverberation and other relevant acoustic phenomena associated to sound perception. In this paper, the acoustic behavior of a perforated system that may be suitable for achieving a variable acoustic solution for room acoustic design is addressed. In the design of a cost-effective solution, the surface appearance is kept unchanged, while variable acoustic behavior is achieved either by closing the holes in the back face of the perforated panel or by placing a porous material in varying positions inside the backing cavity, thus accomplishing different acoustic requirements within a multipurpose auditorium. An analytical approach, based on the transfer matrix method is employed for preliminary acoustic sound absorption assessment provided by the system and to develop optimized solutions. Diffuse sound absorption is then computed and used to simulate, by the ray-tracing method, the acoustic behavior of a multipurpose auditorium to demonstrate efficient acoustic performance for different types of use.
format	article
author	Andreia Pereira Anna Gaspar Luís Godinho Paulo Amado Mendes Diogo Mateus Jesus Carbajo Jaime Ramis Pedro Poveda
author_facet	Andreia Pereira Anna Gaspar Luís Godinho Paulo Amado Mendes Diogo Mateus Jesus Carbajo Jaime Ramis Pedro Poveda
author_sort	Andreia Pereira
title	On the Use of Perforated Sound Absorption Systems for Variable Acoustics Room Design
title_short	On the Use of Perforated Sound Absorption Systems for Variable Acoustics Room Design
title_full	On the Use of Perforated Sound Absorption Systems for Variable Acoustics Room Design
title_fullStr	On the Use of Perforated Sound Absorption Systems for Variable Acoustics Room Design
title_full_unstemmed	On the Use of Perforated Sound Absorption Systems for Variable Acoustics Room Design
title_sort	on the use of perforated sound absorption systems for variable acoustics room design
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/c21e1b4cdacf484da64c7746375b9aae
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On the Use of Perforated Sound Absorption Systems for Variable Acoustics Room Design

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