Acoustics and Perception in Special Shape Spaces

A special issue of Buildings (ISSN 2075-5309). This special issue belongs to the section "Building Energy, Physics, Environment, and Systems".

Deadline for manuscript submissions: closed (20 February 2024) | Viewed by 2628

Special Issue Editors


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Guest Editor
School of Architecture, Tianjin University, Tianjin 300072, China
Interests: environmental and building acoustics; building physics; noise control; room acoustics

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Guest Editor
School of Architecture, South China University of Technology, Guangzhou 510006, China
Interests: architectural acoustics; environmental acoustics; building sound; acoustics and perception

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Guest Editor
School of Architecture, Tianjin University, Tianjin 300072, China
Interests: acoustics and acoustic engineering; sound analysis

Special Issue Information

Dear Colleagues,

With the evolution of room acoustics science, sound propagation in auditoriums has become thoroughly understood and accurately predicted by various models. The knowledge obtained of acoustics in auditoriums also expands our understanding of acoustics ordinary spaces. However, in spaces with special shapes, such as extra-large spaces, flat spaces, long spaces, spherical spaces and coupled spaces, what factors contribute to the room acoustics and how the people perceive the sound environment in those spaces are still unclear. The acoustic environment in those spaces is very complicated since their unusual shapes and various functions lead to distinct sound field conditions and requirements. How does the acoustic environment in those special spaces affect people’s sound perception? How do the subjective perceptions of the acoustic environment in those spaces differ from the ordinary ones? Would various populations such as staff and users tend to give different requirements for and evaluations of the sound environment in those special spaces? How do non-acoustic factors, such as occupants’ sociological characteristics (age, education, gender, sensitivity, attitudes, etc.), differ in their sound perception of special spaces? There is still much work to be done on the acoustics and their perceptions in special spaces.

In this Research Topic, any research that contributes to our understanding of acoustics and perception in special spaces, including, but not limited to, extra-large waiting spaces, exhibition halls, large sports stadiums, and subways, etc., is welcome for submission. We also expect interdisciplinary communication and cooperation among researchers in acoustics, psychology, physiology, sociology, and so on, to make the study's scope more distinct, elaborate, and prolific. We believe all the works of this Topic will contribute to the further understanding and practices to create desirable acoustic environments for human beings meeting both function and health requirements.

The sub-themes of this Topic include, but are not limited to, the following:

  • Systematic studies on the acoustic environment in special spaces;
  • In-depth discussion on the acoustic perceptual differences in special and ordinary spaces;
  • Research on tools and methods to evaluate the acoustics in special spaces;
  • The perceptual framework in the sound perception of special spaces by different occupants;
  • Changes in the acoustic situation and perception of special spaces during the COVID-19 pandemic;
  • Acoustic and non-acoustic factors on sound perception in special spaces.

We welcome a broad range of article types, including Original Research, Systematic Reviews, Methods, Hypotheses and Theories, Perspectives, and Brief Research Reports. The aim is to provide both a theoretical and methodological state-of-the-art on the topic.

Prof. Dr. Hui Ma
Prof. Dr. Yuezhe Zhao
Dr. Chao Wang
Guest Editors

Manuscript Submission Information

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Keywords

  • special-shaped spaces
  • acoustic environment
  • sound perception
  • acoustic factors
  • non-acoustic factors

Published Papers (3 papers)

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Research

21 pages, 24164 KiB  
Article
A Study of Soundscape Restoration in Office-Type Pocket Parks
by Yaping Wang, Xin Deng, Yanqiu Cui and Xin Zhao
Buildings 2024, 14(4), 1047; https://doi.org/10.3390/buildings14041047 - 9 Apr 2024
Viewed by 388
Abstract
High-density building environments and fast-paced working conditions in cities pose health challenges for office workers. Office-type pocket parks assume the social responsibility of providing restorative environments for office workers, and the soundscape is an essential element of such environments. However, there is limited [...] Read more.
High-density building environments and fast-paced working conditions in cities pose health challenges for office workers. Office-type pocket parks assume the social responsibility of providing restorative environments for office workers, and the soundscape is an essential element of such environments. However, there is limited research on soundscape restoration in office-type pocket parks. Therefore, this study focused on soundscape restoration in office-type pocket parks. First, on-site investigations explored the spatial characteristics of 55 office-type pocket parks while analysing the soundscape features of 12 representative parks. Notably, significant correlations emerged among the perceptual parameters of the soundscape. Subsequently, three dimensions were extracted through an experimental study on the restoration levels of soundscape elements in office-based pocket parks: attractiveness, coordination, and disengagement. Finally, this study explored the impact of spatial enclosures and interface characteristics on soundscape restoration levels. This revealed that the restorative effect of negative sounds, such as traffic, air-conditioning, and speech, is significantly negatively correlated with spatial enclosure. Therefore, the greater the enclosure, the lower the restorative effect of the soundscape. Birdsongs significantly enhance the attractiveness of grey spaces, whereas small fountain sounds are most coordinated in blue spaces. This study provides a reference for the design of soundscapes in pocket parks to build healthy, restorative urban environments. Full article
(This article belongs to the Special Issue Acoustics and Perception in Special Shape Spaces)
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15 pages, 5476 KiB  
Article
The Effects of Sound Absorption of Stage House on the Acoustics of Auditorium in an Opera House
by Jianliang Gao, Yuezhe Zhao and Lili Pan
Buildings 2024, 14(3), 718; https://doi.org/10.3390/buildings14030718 - 7 Mar 2024
Viewed by 537
Abstract
The coupling effects between the stage house and the auditorium in opera houses make the sound field very complex. In the present study, the effects of stage absorption on the primary monaural objective room acoustic parameters in the seating area of an opera [...] Read more.
The coupling effects between the stage house and the auditorium in opera houses make the sound field very complex. In the present study, the effects of stage absorption on the primary monaural objective room acoustic parameters in the seating area of an opera house in China were investigated by means of computer simulation and scaled model measurement. In computer simulations, the absorption coefficient of the ceiling and walls of the stage house was changed across several steps, and then a series of experiments were conducted in a 1:20 scaled hall with and without curtains and wall absorption on the stage to verify the simulation results. It was found that stage absorption has a significant influence on early decay time (EDT), reverberation time (RT) and clarity (C80) in the seating area, while the effect on sound strength (G) is much smaller. The values of EDT and RT decrease with an increase in sound absorption on the stage, while C80 displays an opposite trend. In addition, when the average absorption coefficient of the stage walls and ceiling is over 0.5, the variations in these four parameters due to the increase in stage absorption can be constrained within an acceptable range. Full article
(This article belongs to the Special Issue Acoustics and Perception in Special Shape Spaces)
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20 pages, 7013 KiB  
Article
Determination of the Sound Absorption Area Inside an Elementary Classroom Using Three Acoustical Methods: Computer Modeling, 1/10-Scale Model Experiment, and Field Acoustic Measurement
by Seung-Min Lee and Chan-Hoon Haan
Buildings 2024, 14(1), 222; https://doi.org/10.3390/buildings14010222 - 14 Jan 2024
Viewed by 711
Abstract
Acoustic standards for classrooms around the world are still being studied, but the placement of sound-absorbing materials to meet these standards is still unclear. The present study examined an appropriate location for applying sound-absorbing materials inside an elementary classroom to ensure speech intelligibility [...] Read more.
Acoustic standards for classrooms around the world are still being studied, but the placement of sound-absorbing materials to meet these standards is still unclear. The present study examined an appropriate location for applying sound-absorbing materials inside an elementary classroom to ensure speech intelligibility while meeting the RT criterion using three scientific experimental methods, namely, computer modeling, a 1/10-scale model, and field acoustic measurement. A sound-absorbing material was applied to the rear wall or ceiling, and the ceiling was further divided into front, center, and rear sections. The acoustic performance was predicted using a 3D computer model of a standardized classroom based on the location of the sound-absorbing material. Subsequently, a 1/10-scale model following the law of similarity was used to compare the acoustic performances based on the location of the sound-absorbing material. Finally, field measurements were performed in an actual classroom to verify the acoustic performance based on the location of the sound-absorbing material. The findings revealed that the sound-absorbing material was most effective when applied to the rear wall, followed by application at the center, front, and rear of the ceiling. Full article
(This article belongs to the Special Issue Acoustics and Perception in Special Shape Spaces)
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