Numerical Analysis of Indoor Sound Quality Evaluation Using Finite Element Method

Chou, Yu-Tuan; Hsia, Shao‐Yi

doi:10.1155/2013/420316

Cited by 4 publications

(5 citation statements)

References 6 publications

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“…Additionally, the group of Chou [18] used the FEM to assess the sound field distribution based on the indoor space and chamber volume, taking into account the effects of shape, absorption property, and room boundary, on sound delivery, in order to determine the improvement of interior sound. They reached the conclusion that their proposal can be applicable to the predesign analysis of interior architecture in order to improve the interior noise and reduce the construction costs.…”

Section: A) Finite Element Methods (Fem)mentioning

confidence: 99%

Spatial Sound Rendering – A Survey

Lakka¹,

Malamos²,

Pavlakis³

et al. 2018

IJIMAI

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Simulating propagation of sound and audio rendering can improve the sense of realism and the immersion both in complex acoustic environments and dynamic virtual scenes. In studies of sound auralization, the focus has always been on room acoustics modeling, but most of the same methods are also applicable in the construction of virtual environments such as those developed to facilitate computer gaming, cognitive research, and simulated training scenarios. This paper is a review of state-of-the-art techniques that are based on acoustic principles that apply not only to real rooms but also in 3D virtual environments. The paper also highlights the need to expand the field of immersive sound in a web based browsing environment, because, despite the interest and many benefits, few developments seem to have taken place within this context. Moreover, the paper includes a list of the most effective algorithms used for modelling spatial sound propagation and reports their advantages and disadvantages. Finally, the paper emphasizes in the evaluation of these proposed works.

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Section: A) Finite Element Methods (Fem)mentioning

confidence: 99%

Spatial Sound Rendering – A Survey

Lakka¹,

Malamos²,

Pavlakis³

et al. 2018

IJIMAI

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“…Yang and Kang (2006) established the relationship between sound pressure and acoustic comfort via surveys and objective monitoring methods in urban European open public spaces. To enhance architectural design quality, Chou and Hsia (2013) studied the relevant characteristics for indoor sound environmental assessments, and analyzed room sound field distributions at different frequencies using finite element analysis software.…”

Section: Ec 336mentioning

confidence: 99%

“…It is defined as the time required for stable sound pressure to attenuate at 60 dB. Clearness and reverberation are two aspects of a single phenomenon and are inversely related to each other (Chou and Hsia, 2013). Generally, three types of RT algorithms are used, which are Sabine's, Norris-Eyring's and Millington-Sette's.…”

Section: Improvement On Acoustic Characteristicsmentioning

confidence: 99%

Improvement on acoustic characteristics of a small space using material selection

Shih

Chou

Hsia

2016

Engineering Computations

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Purpose -Recently, the acoustic characteristics of indoor spaces have been perceived to be more important due to the economic development needs of societies. At the same time, container houses have gradually become more widely used in many applications because of their sustainability and ease of use. In spite of their convenience, these container units still need to foster pleasant and quiet sound environments. The paper aims to discuss these issues. Design/methodology/approach -In this paper, commercial software, designed by Ecotect Analysis, has been used to evaluate the sound characteristics of container houses. As a result, the decorated materials in such a small indoor space have been redesigned for the acoustic comfort of users based on the optimal reverberation time (RT). First, a three-dimensional model of the container house was constructed using the software's default tools. Then, the indoor acoustic characteristics of various design conditions were obtained from the simulation process undertaken. Findings -By comparing the experimental and simulation results, excellent agreement was observed which verified the feasibility of the software. The original container house experienced an RT distribution of 140-315 ms. After selecting a suitable interior design material, its RT distribution was measured at 160-680 ms. Originality/value -Following the design process described, spatial designers can assess the indoor acoustic characteristics at the concept design stage and ensure that a decent acoustic comfort environment is derived in their building designs. Meanwhile, such modifications should improve the quality of living for residents of container houses and construction cost reductions might be implemented.

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“…With the continuous improvement in living standards, people have imposed increasing acoustic environment requirements to ensure normal work, life, and study. − Materials that can absorb the sound energy transmitted in air to a large extent are widely used to create a high-quality auditory feast. These sound-absorbing materials can improve indoor sound quality and achieve good acoustic effects. , The sound environment can be effectively improved by adjusting reverberation time, controlling sound reflection, and eliminating possible acoustic defects. − In recent years, among many sound-absorbing materials, polymer foams have been extensively employed in construction, rail transit, and other fields owing to their excellent thermal insulation and lightweight properties .…”

Section: Introductionmentioning

confidence: 99%

Formation of Interpenetrating-Phase Composites Based on the Combined Effects of Open-Cell PIF and Porous TPU Microstructures for Enhanced Mechanical and Acoustical Characteristics

Ren,

Wang,

Sun

et al. 2023

ACS Appl. Polym. Mater.

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The open-cell foam is a highly preferred soundabsorbing material used for improving indoor sound quality. Herein, polyimide foam (PIF) with an open-cell structure was synthesized through the introduction of oxalic acid dihydrate (H 2 C 2 O 4 •2H 2 O). The introduction and subsequent decomposition of H 2 C 2 O 4 •2H 2 O provided additional heterogeneous nucleation sites during foaming and promoted the formation of open-cell structures. The relation between H 2 C 2 O 4 •2H 2 O content and pore structure, the formation mechanism of open-cell structures, and the effect of H 2 C 2 O 4 •2H 2 O content on the sound absorption performance were analyzed. Furthermore, interpenetrating-phase thermoplastic polyurethane (TPU)/PIF composites were prepared via non-solvent-induced phase separation on the basis of the open-cell PIF. The formation of porous TPU microstructures and improvement of mechanical and acoustic properties of the interpenetrating-phase composites were discussed. Two main forms of TPU existed in the interpenetrating composites: microparticle TPU structure and microporous TPU structure. The compression strength (125.54 kPa) and sound insulation capacity of 10%TPU/PIF3 were 3.47 and approximately 5 times those of open-cell PIF3, respectively. Moreover, the average sound absorption coefficient (1000−6400 Hz) increased by 58.43% compared to that of opencell PIF3. The design based on the open-cell PIF promoted the enrichment of internal channels, and the construction of the internal channels with porous TPU microstructures achieved reflection enhancement and viscoelastic damping dissipation. Finally, the combined effects of the two designs synchronously enhanced the mechanical properties, sound absorption, and sound insulation properties of TPU/PIF materials, providing a thought for improving the acoustic properties of serialized polymer foam materials.

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Numerical Analysis of Indoor Sound Quality Evaluation Using Finite Element Method

Cited by 4 publications

References 6 publications

Spatial Sound Rendering – A Survey

Spatial Sound Rendering – A Survey

Improvement on acoustic characteristics of a small space using material selection

Formation of Interpenetrating-Phase Composites Based on the Combined Effects of Open-Cell PIF and Porous TPU Microstructures for Enhanced Mechanical and Acoustical Characteristics

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