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New Design Approaches of Acoustical Environments

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Acoustics and Vibrations".

Deadline for manuscript submissions: 20 July 2025 | Viewed by 1295

Special Issue Editor


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Guest Editor
Department of Architectural Engineering, Youngsan University, Yangsan, Republic of Korea
Interests: noise reduction; room acoustics; auditorium acoustics; acoustic diffuser design; architectural acoustics designing; acoustic computer simulation; acoustic scale modeling; public space acoustics; acoustic testing techniques; sound isolation; sound qaulity analysis; pscychoacoustics
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Special Issue Information

Dear Colleagues,

Modern building acoustics have advanced over the past 150 years since the field was founded by W. C. Sabine. It developed mainly according to modern science and technology based on the Third Industrial Revolution. However, we are currently facing the Fourth Industrial Revolution in smart cities, with a fusion of artificial intelligence, robotics, the Internet of Things, genetic engineering and more. Furthermore, rapid urbanization with dense populations and high-speed transportation increases complex noise sources both indoors and outdoors of buildings. On the other hand, the demand for better acoustic built environments is also increasing, along with the improved quality of life.

In this context, new challenges including the convergence of cutting-edge technologies and multi-disciplinary research are required to solve difficult problems and to promote acoustical comfort in building acoustics. This Special Issue focuses on all innovative aspects of building acoustics.

All contributions on building acoustics regarding recent experiences, case studies, or scientific evidence obtained through both methodological and technical approaches will be considered. This collection of papers aims to create a background of good practices as well as a reference for municipalities and anyone studying future building acoustics.

Dr. Yonghee Kim
Guest Editor

Manuscript Submission Information

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Keywords

  • building acoustics
  • architectural acoustics
  • acoustical modeling
  • acoustical measurement
  • sound source identification
  • noise reduction devices
  • vibration control
  • room acoustic design
  • indoor soundscape
  • acoustic comfort of residents

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Published Papers (1 paper)

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Research

15 pages, 2208 KiB  
Article
A Case Study of Frequency Analysis of the Contribution of a Single Number Quantity to the Introduction of Rubber Ball Impact Sound and Changes in Assessment Methods
by Hee-Mo Goo, Soon-Seong Moon and Jun-Oh Yeon
Appl. Sci. 2024, 14(24), 11998; https://doi.org/10.3390/app142411998 - 21 Dec 2024
Viewed by 815
Abstract
This study analyzed the effects of changes in the inter-floor noise assessment system in multi-family housing in Korea on heavy-weight impact sound performance assessment. By comparing the existing pre-approval system with the newly introduced post-verification system, we focused on the effects of the [...] Read more.
This study analyzed the effects of changes in the inter-floor noise assessment system in multi-family housing in Korea on heavy-weight impact sound performance assessment. By comparing the existing pre-approval system with the newly introduced post-verification system, we focused on the effects of the evaluation criteria, impact sources, and frequency band considerations on the single numerical evaluation quantities (Li,Fmax,AW and LiA,Fmax) and contribution rates by frequency band. For the analysis, impact sounds were measured using a bang machine used in the existing pre-approval system and a rubber ball used in the post-verification system, and the performance of the floor structure was evaluated in the 1/1 and 1/3 octave bands. As a result, the pre-approval system showed a high contribution rate mainly in the 63 Hz band, but the post-verification system expanded the contribution rate to the mid-low frequency band of 63–160 Hz. In particular, the evaluation method using the A-weighted maximum floor impact sound level (LiA,Fmax) of the post-verification system was found to reflect the performance in the mid- and high-frequency band of 125–250 Hz more effectively. The post-verification system enables a more accurate evaluation of the performance of high-frequency bands that were overlooked in the existing system, thereby enabling a realistic response to the mitigation of inter-floor noise. Accordingly, construction companies must meet stricter performance standards in floor structure design and resilient materials development, in accordance with the new regulations. For example, designs utilizing sound-absorbing ceiling structures and high-performance resilient materials are expected to be effective in reducing heavy-impact noise. This study provides important basic data for tracking the performance of floor structures according to changes in the system, and selecting key frequency bands for reducing heavy-impact noise. In addition, it emphasizes the need to continuously monitor the performance of multi-family housing constructed under the new system and to derive effective design strategies for solving inter-floor noise problems. In the future, it will be necessary to expand the usability of the results of this study through additional studies targeting more diverse floor plans and floor structures. Full article
(This article belongs to the Special Issue New Design Approaches of Acoustical Environments)
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