BUILDING ACOUSTICS最新文献_第7页

Sound insulation of a hollow concrete blocks wall made with construction and demolition waste and wood-based panels as linings 用建筑和拆迁废料和人造板作为衬里制成的空心混凝土砌块墙的隔音材料

IF 1.7

BUILDING ACOUSTICS Pub Date : 2021-02-12 DOI: 10.1177/1351010X21993640

Rodrigo Scoczynski Ribeiro, Raylton Pereira de Sousa, Rosemara Santos Deniz Amarilla, Luis Henrique Sant’Ana, Márcio Avelar, R. E. Catai, A. Matoski

{"title":"Sound insulation of a hollow concrete blocks wall made with construction and demolition waste and wood-based panels as linings","authors":"Rodrigo Scoczynski Ribeiro, Raylton Pereira de Sousa, Rosemara Santos Deniz Amarilla, Luis Henrique Sant’Ana, Márcio Avelar, R. E. Catai, A. Matoski","doi":"10.1177/1351010X21993640","DOIUrl":"https://doi.org/10.1177/1351010X21993640","url":null,"abstract":"It is a well-discussed topic that Construction and Demolition Waste (CDW) can be recycled and used as aggregate in the construction sector. Generally, Brazilian construction techniques are based on hollow blocks or bricks and mortars as coating systems. This paper describes the sound insulation of a masonry wall built with hollow concrete blocks and CDW as aggregates. The measurements were performed according to the reverberant chamber method. Keeping sustainability in mind instead of applying cement mortar as coating system, Oriented Strand Boards (OSB) and Wood-Wool Cement Boards (WWCB) were used and also tested as acoustical linings. The panels were directly attached on the wall with nails in the receiving room. All types of panels increased the weighted sound reduction index ( R W ). Wood-based composites can also improve the air quality because of their hygroscopic properties. In summary, sustainable wall systems were characterized according to their sound insulation properties, presented as possible substitutes for traditional masonry walls.","PeriodicalId":51841,"journal":{"name":"BUILDING ACOUSTICS","volume":"28 1","pages":"423 - 442"},"PeriodicalIF":1.7,"publicationDate":"2021-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/1351010X21993640","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47959753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Case study: A survey of perceived noise in Canadian multi-unit residential buildings to study long-term implications for widespread teleworking 案例研究:对加拿大多单元住宅建筑中感知噪声的调查，以研究广泛远程办公的长期影响

IF 1.7

BUILDING ACOUSTICS Pub Date : 2021-02-09 DOI: 10.1177/1351010X21993742

Maedot S. Andargie, M. Touchie, W. O’brien

{"title":"Case study: A survey of perceived noise in Canadian multi-unit residential buildings to study long-term implications for widespread teleworking","authors":"Maedot S. Andargie, M. Touchie, W. O’brien","doi":"10.1177/1351010X21993742","DOIUrl":"https://doi.org/10.1177/1351010X21993742","url":null,"abstract":"Trends of urbanization, densification, and telework all point to increasing exposure to ambient noise for workers. With the lockdown policies implemented in response to COVID-19, a research opportunity to study perceived noise exposure for teleworking arose. This paper presents the results of a survey on noise issues in multi-unit residential buildings (MURBs) and the consequent effects on occupants' well-being and productivity during the lockdown. Responses were collected from 471 MURB occupants across Canada. The results show that, despite the decrease in environmental noise, many are annoyed by outdoor noise, particularly from traffic and construction activities, and indicated that it affects their ability to work. Effects on ability to work from home were more frequently reported for indoor noise sources particularly airborne and impact noises coming from neighboring suites. Our findings, however, show that noise coming from occupants in the same suite (i.e. roommates and family) present the biggest issue. The findings indicate that existing noise conditions in MURBs might not be suitable for a permanent large-scale implementation of teleworking.","PeriodicalId":51841,"journal":{"name":"BUILDING ACOUSTICS","volume":"28 1","pages":"443 - 460"},"PeriodicalIF":1.7,"publicationDate":"2021-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/1351010X21993742","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45583825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 25

Development of tomography–transmission electron microscope (TEM) specimen holder stable under acoustic disturbances 声干扰下稳定的层析透射电子显微镜(TEM)试样架的研制

IF 1.7

BUILDING ACOUSTICS Pub Date : 2021-01-26 DOI: 10.1177/1351010X21989494

K. Bataineh

{"title":"Development of tomography–transmission electron microscope (TEM) specimen holder stable under acoustic disturbances","authors":"K. Bataineh","doi":"10.1177/1351010X21989494","DOIUrl":"https://doi.org/10.1177/1351010X21989494","url":null,"abstract":"This paper focuses on the development of tomography—transmission electron microscope (TEM) specimen holder stable under environment effect that allows atomic resolution. The successful holder must be dynamically stable for accuracy and image processes to obtain an atomic resolution, with a minimum controllable drift of the sample position. Different strategies to reduce the effect of acoustic disturbances are investigated. The approach to the problem has been two-fold, numerical and experimental. The effect of mechanical and acoustic noise is analyzed. Finite element results match very well previous experimental results and observations. Theoretical analysis showed that air pressure fluctuations have a significant impact on microscopes with side entry goniometers, especially when the exciting frequency matches a vibration mode of the sample holder. For example, finite element analysis (FEA) predicts that the tip deflections are 4.5 Å and 0.09 Å under air pressure excitation of 64 and 40 dB respectively. Utilizing a sandwiched constrained damping shell layer made of viscoelastic material that partially covers the inner part of TEM holder body successfully decreased the vibration. Finite element simulations predict that a shell layer of viscoelastic material with a thickness equal to the 1/10 of the body holder diameter reduces the vibrations by 30%. The viscoelastic layer shell thickness, loss factor, and elastic modulus have a strong effect on the damping behavior and the optimal combination should be determined.","PeriodicalId":51841,"journal":{"name":"BUILDING ACOUSTICS","volume":"28 1","pages":"327 - 343"},"PeriodicalIF":1.7,"publicationDate":"2021-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/1351010X21989494","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47741115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Parameter analysis and modification of transmission loss models for multi-layered cavity walls 多层空腔壁传输损耗模型的参数分析及修正

IF 1.7

BUILDING ACOUSTICS Pub Date : 2021-01-17 DOI: 10.1177/1351010X20987355

Y. Tsay, Chuan-Hsuan Lin

引用次数: 0

Directional sound field decay analysis in performance spaces 表演空间的定向声场衰减分析

IF 1.7

BUILDING ACOUSTICS Pub Date : 2021-01-04 DOI: 10.1177/1351010X20984622

Marco Berzborn, M. Vorländer

引用次数: 5

A case study of acoustic intervention in classrooms 课堂声干预的个案研究

IF 1.7

BUILDING ACOUSTICS Pub Date : 2020-11-24 DOI: 10.1177/1351010X20975765

Ajish K. Abraham, M. S. Ravishankar

引用次数: 0

Stage acoustics and parametric design: The development of an integrated early design tool 舞台声学和参数化设计:一种集成的早期设计工具的开发

IF 1.7

BUILDING ACOUSTICS Pub Date : 2020-11-19 DOI: 10.1177/1351010X20971102

Javier Sanz Soriano, O. Wright, Elisabeth van den Braak, Christopher Day

{"title":"Stage acoustics and parametric design: The development of an integrated early design tool","authors":"Javier Sanz Soriano, O. Wright, Elisabeth van den Braak, Christopher Day","doi":"10.1177/1351010X20971102","DOIUrl":"https://doi.org/10.1177/1351010X20971102","url":null,"abstract":"Traditional ray tracing software tools (e.g. Odeon, CATT-Acoustic, EASE) enable detailed analysis of stage acoustics; however, they are typically undertaken in later design stages and lack the flexibility required for early design development. This paper, which follows from a poster presentation at ISRA 2019, investigates the use of a three-dimensional modelling platform (Rhinoceros/Grasshopper) to quickly assess the influence of architectural changes on reflections that support orchestral ensemble. This approach enables immediate feedback, a more creative design process and better integration of architecture and acoustics. Early reflections have been found to be vital for effective orchestral ensemble. Therefore, the study focused on the investigation of early energy distribution on stage with ray tracing analysis using a parametric tool. This tool also considers cross-stage shielding effects from the orchestra and the directivity of instruments. The results of the tool have been compared to an existing acoustic modelling software to determine its accuracy and reliability. Additionally, the expansion of the tool with an evolutionary solver has also been explored. The development of a Rhinoceros/Grasshopper design tool has been found to be beneficial in the analysis of stage conditions and enhances the design collaboration during early design phases.","PeriodicalId":51841,"journal":{"name":"BUILDING ACOUSTICS","volume":"28 1","pages":"265 - 279"},"PeriodicalIF":1.7,"publicationDate":"2020-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/1351010X20971102","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44299205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Acoustic optimization of curved architecture in practice: The new Strait Cultural Arts Center in Fuzhou 曲线建筑声学优化的实践——福州海峡文化艺术中心新馆

IF 1.7

BUILDING ACOUSTICS Pub Date : 2020-11-10 DOI: 10.1177/1351010X20968714

Y. Jurkiewicz, Henrik Møller, T. Wulfrank, Jingbo Wang, E. Kahle

{"title":"Acoustic optimization of curved architecture in practice: The new Strait Cultural Arts Center in Fuzhou","authors":"Y. Jurkiewicz, Henrik Møller, T. Wulfrank, Jingbo Wang, E. Kahle","doi":"10.1177/1351010X20968714","DOIUrl":"https://doi.org/10.1177/1351010X20968714","url":null,"abstract":"Curved surfaces are increasingly part of the architectural language used in buildings for the performing arts, yet have known challenges both in reality and in ray-tracing-based computer simulations. The designs of the 1000-seat symphony hall, the 1600-seat opera house and the 800-seat multi-purpose hall in Fuzhou, China, were all based on curved surfaces, both convex and concave, often covered with local ceramic tiles. Providing the right amount, distribution and quality of early reflections thus required a precise analysis of the acoustic behavior of curved surfaces. The acoustic design interacted with the architecture in precisely shaping those curves in 3D. In order to explore the acoustic potential and detect problems related to the architectural concept of both rooms, novel geometrical acoustics analysis algorithms were developed within NURBS modeling software rather than relying on commercial ray-tracing algorithms. Optimization of the curved surfaces is obtained when the output of these algorithms, the interpretation of the acoustic consultant, and the required integration of acoustic solutions within the global architectural concept are all aligned – a “meeting of minds” between acoustics and architecture. The analysis procedure and geometrical acoustics algorithms used will be presented in detail, as well as the related decision-making process, the acoustic predictions and the measurement results of the three built halls.","PeriodicalId":51841,"journal":{"name":"BUILDING ACOUSTICS","volume":"28 1","pages":"281 - 290"},"PeriodicalIF":1.7,"publicationDate":"2020-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/1351010X20968714","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46614892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A performance-based optimization approach for diffusive surface topology design 一种基于性能的扩散表面拓扑设计优化方法

IF 1.7

BUILDING ACOUSTICS Pub Date : 2020-10-28 DOI: 10.1177/1351010X20967821

L. Shtrepi, T. M. Méndez Echenagucia, E. Badino, A. Astolfi

{"title":"A performance-based optimization approach for diffusive surface topology design","authors":"L. Shtrepi, T. M. Méndez Echenagucia, E. Badino, A. Astolfi","doi":"10.1177/1351010X20967821","DOIUrl":"https://doi.org/10.1177/1351010X20967821","url":null,"abstract":"Different numerical techniques have been used in the last decades for the acoustic characterization and performance optimization of sound diffusive surfaces. However, these methods require very long calculation times and do not provide a rapid feedback. As a result, these methods can hardly be applied by designers at early stages of the design process, when successive design iterations are necessary from an aesthetic point of view. A suitable alternative could be the use of parametric modeling in combination with performance investigations during the design process of sound diffusive surfaces. To this aim, this study presents a design process for diffusive surfaces topology optimization based on the combination of parametric models and geometrical acoustic simulations. It aims to provide architects and designers with rapid visual feedback on acoustic performances at a preliminary stage of the design process. The method has been tested on different case studies, which have been modelled based on geometric guidelines for diffusive surface optimization. The sensitivity of the method showed that it could be a very useful tool for comparisons among surface design alternatives. Finally, the advantages and limitations of the integrated optimization in comparison with conventional optimizations are discussed.","PeriodicalId":51841,"journal":{"name":"BUILDING ACOUSTICS","volume":"28 1","pages":"231 - 247"},"PeriodicalIF":1.7,"publicationDate":"2020-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/1351010X20967821","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42595091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

The acoustics of ancient catacombs in Southern Italy 意大利南部古代地下墓穴的声学

IF 1.7

BUILDING ACOUSTICS Pub Date : 2020-10-28 DOI: 10.1177/1351010X20967571

Giuseppe Ciaburro, U. Berardi, G. Iannace, A. Trematerra, Virginia Puyana-Romero

{"title":"The acoustics of ancient catacombs in Southern Italy","authors":"Giuseppe Ciaburro, U. Berardi, G. Iannace, A. Trematerra, Virginia Puyana-Romero","doi":"10.1177/1351010X20967571","DOIUrl":"https://doi.org/10.1177/1351010X20967571","url":null,"abstract":"The catacombs, burial sites for early Christians, were constructed during the Roman Empire until the Christian religion was recognized in 313 AD. The catacombs were cementeries, which were organized according to precise rules and were dug into the ground on several levels, to occupy as little space as possible. The catacombs became places of worship as martyrs were buried in them. The catacombs were then abandoned with the barbarian invasions and the consequent construction of churches inside cities. The catacombs were rediscovered during the Renaissance period and became a place of renewed worship. In the present work, the acoustic characteristics of the catacombs of San Callisto in Rome, San Gennaro in Naples, and Vigna Cassia in Syracuse are discussed. The three selected catacombs differ by type of excavation and geometry. In particular, the catacombs of San Callisto are made of narrow corridors and small rooms; the catacombs of San Gennaro consist of large rooms with niches; the catacombs of Vigna Cassia are partly excavated in the tuff and partially occupy a disused aqueduct. The acoustic measurements were performed using an impulsive sound source. The description of the acoustic characteristics focuses on the reverberation time and the Speech Transmission Index. The results show that the reverberation time was always shorter than 1 second, confirming the reduced reverberation of these environments. Finally, the speech listening characteristics are particularly good, ensuring the suitable conditions for the prayer in these spaces.","PeriodicalId":51841,"journal":{"name":"BUILDING ACOUSTICS","volume":"28 1","pages":"411 - 422"},"PeriodicalIF":1.7,"publicationDate":"2020-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/1351010X20967571","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45415333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10