NDLI: Sound absorption coefficient of direct piercing carved wood panel with uniform geometric patterns

Content Provider	IEEE Xplore Digital Library
Author	Dimon, M.N. Hashim, A.W.I. Hamid, S.Z.A. Harun, M. Rahman, F.A. Adzim, S.D.A.M. Kit, M.H.
Copyright Year	2009
Description	Author affiliation: Faculty of Electrical Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia (Dimon, M.N.; Hashim, A.W.I.; Hamid, S.Z.A.; Harun, M.; Rahman, F.A.; Adzim, S.D.A.M.; Kit, M.H.)
Abstract	Direct piercing carved wood panels (DPCWP) have been used as part of the wall panel for mosques in this country. Among the earliest used of DPCWP is as in Masjid Sultan Zainal Abidin in 1700s, Kuala Terengganu, Terengganu. It is envisage, the use of DPCWP is to help in achieving good speech intelligibility inside. This is considering DPCWP allowing sound waves to pass through, hence sound reflection to the main prayer is contain. Minimizing sound reflection toward the mosque main area, ensuring optimization of speech intelligibility. DPCWP has the ability to allow sound waves to pass through the panel. This qualifies DPCWP as sound absorber material. This as Sabine, Kutruff and Maekawa definition of sound absorption coefficient. In this paper the sound absorption coefficient of DPCWP with uniform geometric patterns are discussed. The perforation ratios are 31% and 37%. Numerical experiments were conducted using Boundary Element Method (BEM). The measured results were obtained using sound intensity measurements technique. Comparison of sound absorption coefficient obtained through numerical experiment and measured using sound intensity are discussed in details. Analysis of resonance frequencies due to types and sizes of apertures in relation to sound absorption coefficient also highlighted. The measured and numerical results suggest, DPCWP of uniform geometric patterns indeed able to act as good sound absorber. This finding allows DPCWP to be used as sound absorber more effectively in future mosque construction.
Starting Page	1
Ending Page	5
File Size	242335
Page Count	5
File Format	PDF
ISBN	9781424452231
DOI	10.1109/TECHPOS.2009.5412075
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-12-14
Publisher Place	Malaysia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Absorption Resonant frequency Boundary element methods Measurement techniques Acoustic materials Apertures Speech Resonance Acoustic reflection Conducting materials
Content Type	Text
Resource Type	Article

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