Next Article in Journal
Understanding the Office: Using Ecological Momentary Assessment to Measure Activities, Posture, Social Interactions, Mood, and Work Performance at the Workplace
Next Article in Special Issue
Characterization of New Sustainable Acoustic Solutions in a Reduced Sized Transmission Chamber
Previous Article in Journal
Metaphors as Discourse Interaction Devices in Architectural Design
Previous Article in Special Issue
Perceived Acoustic Quality and Effect on Occupants’ Satisfaction in Green and Conventional Residential Buildings
Open AccessReview

Multiple-Layer Microperforated Panels as Sound Absorbers in Buildings: A Review

Institute for Physical and Information Technologies (ITEFI), Spanish National Research Council (CSIC), Serrano 144, 28006 Madrid, Spain
Author to whom correspondence should be addressed.
Buildings 2019, 9(2), 53;
Received: 22 January 2019 / Revised: 6 February 2019 / Accepted: 15 February 2019 / Published: 25 February 2019
(This article belongs to the Special Issue Noise Control in Buildings)
Sound absorbing materials are used in buildings to dissipate sound energy into heat using viscous and thermal processes. Sound absorbers increase the transmission loss of walls, decrease the reverberation time of rooms, and attenuate the noise generated by internal sound sources. Porous absorbers (fibrous, cellular, or granular) are the most used materials in noise control applications because of their high performance-to-cost ratio in the frequency band of interest. However, when cleaning conditions and health reasons are of concern, microperforated panel (MPP) absorbers may be the preferred choice. MPPs, consisting of many minute (sub-millimetric) holes in a panel, are tunable absorbers in a prescribed frequency band, whose main shortcomings are high manufacturing cost and limited absorption frequency band. Currently, the production cost of MPPs can be drastically reduced by means of modern techniques. The absorption frequency band can be considerably enlarged by designing multiple-layer MPPs (ML-MPPs). The aim of this article is to review the high potential of ML-MPPs as a modern, clean, and healthy alternative to porous materials for sound absorption. View Full-Text
Keywords: sound absorption; microperforated panels; multi-layer systems sound absorption; microperforated panels; multi-layer systems
Show Figures

Figure 1

MDPI and ACS Style

Cobo, P.; Simón, F. Multiple-Layer Microperforated Panels as Sound Absorbers in Buildings: A Review. Buildings 2019, 9, 53.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Back to TopTop