@article {Kim:2020:0736-2935:1143,
title = "In-situ investigation of multi-perforated gypsum boards in an apartment living space for reduction of heavy-weight impact noise",
journal = "INTER-NOISE and NOISE-CON Congress and Conference Proceedings",
parent_itemid = "infobike://ince/incecp",
publishercode ="ince",
year = "2020",
volume = "261",
number = "5",
publication date ="2020-10-12T00:00:00",
pages = "1143-1151",
itemtype = "ARTICLE",
issn = "0736-2935",
url = "https://ince.publisher.ingentaconnect.com/content/ince/incecp/2020/00000261/00000005/art00018",
author = "Kim, Yong Hee and Kim, So Young and Park, Sung Ho and Lee, Hye Mi",
abstract = "In this study, effects of multi-perforated gypsum boards on floor impact noises were investigated in a box-type test building and an actual apartment building. In a box-type test building with 150-mm thick slab, various design factors such as hole pattern, hole size, opening ratio,
backing or finishing materials were considered. Heavy-weight impact sources of bang machine and rubber ball were employed. Test procedure followed KS F 2810-2, then single number rating was derived in accordance with KS F 2863-2. As results, reduction of heavy-weight impact noise by applying
multi-perforated gypsum boards as a ceiling material was expected maximumly up to 3 dB for bang machine and 5 dB for rubber ball, respectively. Installation amount was the dominant factor to reduce impact noises at the frequencies above 125 Hz rather than installation location or profile design.
Then, in-situ investigation using standard impact sources and 5 children was carried out in an actual living space of actual apartment dwelling unit. Comparing before and after installation of multi-perforated gypsum board, 1 to 2 dB of heavy-weight impact noises were reduced. In addition,
subjective impressions of the reduced impact noise were discussed based on the field questionnaire survey using actual children' running situation.",
}