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      Application of transparent microperforated panel to acrylic partitions for desktop use: A case study by prototyping

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            Revision notes

            We have removed Figs. 5 and 7, and leave only Fig. 9. We also change the structure of the section: the section is now divided into two – one describes the outline of the experiment, and the other presents results and discussion. By this reconstruction, we believe that this has saved space and made it easier to read. Also, we remove the word ‘step’ from this section to avoid a possible confusion. Now we consistently use ‘specimen’ only.

            Abstract

            There are various measures currently in place to prevent the spread of COVID-19; however, in some cases, these can have an adverse effect on the acoustic environment in buildings. For example, transparent acrylic partitions are often used in eating establishments, meeting rooms, offices, etc., to prevent droplet infection. However, acrylic partitions are acoustically reflective; therefore, reflected sounds may cause acoustic problems such as difficulties in conversation or the leakage of conversation. In this study, we performed a prototyping of transparent acrylic partitions to which a microperforated panel (MPP) was applied for sound absorption while maintaining transparency. The proposed partition is a triple-leaf acrylic partition with a single acrylic sheet without holes between two MPP sheets, as including a hole-free panel is important to a possible droplet penetration. The sound absorption characteristics were investigated by measuring the sound absorption in a reverberation room. As the original prototype showed sound absorption characteristics with a gentle peak and low values due to the openings on the periphery, it was modified by closing the openings of the top and sides. The sound absorption performance was improved to some extent when the top and sides were closed, although there remains the possibility of further improvement. This time, only the sound absorption characteristics were examined in the prototype experiments. The effects during actual use will be the subject of future study.

            Content

            Author and article information

            Journal
            UCL Open: Environment Preprint
            UCL Press
            23 June 2021
            Affiliations
            [1 ] Environmental Acoustics Lab., Dept. of Architecture, Grad. Sch. of Engineering, Kobe University, Rokko, Nada, Kobe, 657-8501 Japan
            [2 ] NC Industry Co. Ltd., 170–1 Shintamaki, Ichida, Kumiyama-cho, Kuze-gun, Kyoto, 613–0022 Japan
            Author notes
            Article
            10.14324/111.444/000076.v3
            42d011c5-c09b-41ac-a124-8c5a8803cc44

            This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY) 4.0 https://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, distribution and reproduction in any medium, provided the original author and source are credited.

            Funding
            none N/A

            The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.
            Architecture
            transparent desktop partition,transparent microperforated panel,sound absorption,COVID-19,Built environment

            Comments

            Date: 23 June 2021

            Handling Editor: Dr Francesco Aletta

            Editorial decision: Accept. This revised article has been accepted following peer review and it is suitable for publication in UCL Open: Environment.

            2021-06-23 12:40 UTC
            +1

            Date: 23 June 2021

            Handling Editor: Dr Francesco Aletta

            The article has been revised, this article remains a preprint article and peer-review has not been completed. It is under consideration following submission to UCL Open: Environment for open peer review.

            2021-06-23 12:39 UTC
            +1

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