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

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

    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. 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.

      Review information

      This work has been published open access under Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Conditions, terms of use and publishing policy can be found at www.scienceopen.com.

      transparent microperforated panel,Built environment,transparent desktop partition,COVID-19,sound absorption

      Review text

      The study reports on the preliminary sound absorption measurements on prototypes of transparent partitions for desktop use made of acrylic microperforated panels. The use of partitions is certainly topical due to the COVID-19 situation and the need to contain the spread of the virus in enclosed environments (e.g., restaurants, meeting rooms). Results on first prototypes suggest that the proposed partitions, besides being transparent to the view and opaque to droplets, can provide some (low) sound absorption. Future investigations will test the potential improvement of the acoustic conditions in real buildings. I also suggest performing in future a parametric analysis (as a function for instance of perforation rate, air layer thickness, hole diameter), as it would be useful for architects and acoustical designers. Overall, I find the paper really clear, interesting and suitable for publication.


      Dear Reviewer

      Thank you very much for your positive and constructive comments. Although the reviewer does not require an amendment, the comments encouraging for the future study are suggested. We consider that they are important for this paper to mention the points of future studies. Thus, we added the sentences below:

      In the last paragraph of Section 3, we added:

      For this purpose, a parametric study with perforation ratio, hole diameter, etc, will be needed both in theoretical and experimental method.

      In the last paragraph of Concluding remarks:

      For this purpose, a parametric study both in theory and experiment will be necessary. Particularly, a theoretical model analysis will be helpful for a practical design.

      Once again, thank you very much for your review.

      2021-06-18 06:11 UTC

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