TY - JOUR
T1 - Studies of the relationship between sound absorption coefficient and air permeability of wood
AU - Kang, Chun Won
AU - Jang, Eun Suk
AU - Jang, Sang Sik
AU - Hasegawa, Masumi
AU - Matsumura, Jnuji
N1 - Funding Information:
This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (NRF–2019R1I1A3A02059471).
Funding Information:
This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (NRF-2019R1I1A3A02059471).
Publisher Copyright:
© 2020 Kyushu University. All rights reserved.
PY - 2020
Y1 - 2020
N2 - The longitudinal sound absorption capability and air permeability of three species of Japanese wood were investigated. The air permeability values of Sugi, Chanchin-modoki, and Yurinoki were 0.5, 0.06, and 0 (air flow not detected) darcy for the heartwood and 18.2, 0.92, and 0.91 darcy for the sapwood, respectively. The noise reduction coefficients of those three species were 0.04, 0.04, and 0.09 for the heartwood and 0.11, 0.05, and 0.14 for the sapwood, respectively. The mean sound absorption coefficients of those sample specimens in the frequency range of 50-6400 Hz were 0.08, 0.06, and 0.20 for the heartwood and 0.16, 0.09, and 0.30 for the sapwood, respectively. The sound absorption capability of the sample specimens increased with increase in air permeability.
AB - The longitudinal sound absorption capability and air permeability of three species of Japanese wood were investigated. The air permeability values of Sugi, Chanchin-modoki, and Yurinoki were 0.5, 0.06, and 0 (air flow not detected) darcy for the heartwood and 18.2, 0.92, and 0.91 darcy for the sapwood, respectively. The noise reduction coefficients of those three species were 0.04, 0.04, and 0.09 for the heartwood and 0.11, 0.05, and 0.14 for the sapwood, respectively. The mean sound absorption coefficients of those sample specimens in the frequency range of 50-6400 Hz were 0.08, 0.06, and 0.20 for the heartwood and 0.16, 0.09, and 0.30 for the sapwood, respectively. The sound absorption capability of the sample specimens increased with increase in air permeability.
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M3 - Article
AN - SCOPUS:85098699982
SN - 0023-6152
VL - 65
SP - 351
EP - 355
JO - Journal of the Faculty of Agriculture, Kyushu University
JF - Journal of the Faculty of Agriculture, Kyushu University
IS - 2
ER -