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Normal incidence sound absorption measurement of circular perforated panels using sound intensity technique

Dimon, Mohamad Ngasri and Abd. Rahman, Tharek and Said, Ahmad Khan and Ibrahim, Md. Najib and Jaafar, Md. Yunos (2000) Normal incidence sound absorption measurement of circular perforated panels using sound intensity technique. In: National Conference on Telecommunication Technology 2000, 20th - 21st Nov. 2000, Hyatt Regency Hotel, Johor Bahru.

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Abstract

It was ascenained that, sound intensity measurement based on fixed point scanning technique could be used to measure the normal incidence sound absorption (aN) of perforated panels accurately and reliably in this paper, the importance of sound field quality indicator (F1+ F2+ F3+ F4) and sound intensity probe measurements distance toward measured aN reliability will be discussed. Individual statistical regression models that suit the measured aN for 20% and 30% perforation ratio were obtained. in addition, overall model for 20% and 30% perforation ratio were also obtained and can served as a basis for aN prediction of perforated panels with the same perforation ratio. The findings suggest, circular perforated panels. which are the simplest form of direct piercing carved wood panels ( DPCWP ) are able to act as sound absorber.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Towards Global Convergence Through telecommunication
Uncontrolled Keywords:sound intensity measurement, fixed point scanning technique, sound absorption
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:10972
Deposited By: Ms Zalinda Shuratman
Deposited On:16 Nov 2010 05:17
Last Modified:16 Nov 2010 05:17

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