(A) theoretical study on room acoustics = 실내 음향에 대한 이론적 연구

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The acoustics of a rectangular room having geometrical irreqularities, whose walls have been covered by an absorbing material, is studied theoretically. Using Green``s functions a general equation for the pressure distribution is derived and this integral equation is solved approximately by perturbation method. By the use of Laplace transform and residual theorem, the transient pressure-time histories are obtained for a simple harmonic source and for an impulsive source. As an unperturbed example, a rectangular room of dimensions 30`` × 15`` × 10`` is considered. When the boundary shapes are perturbed, sound pressure is solved and its decay-curves are plotted within 1/3-octave band centered at 125 cycles/sec. Also wave-acoustical result is compared with that of geometrical acoustics by the reverberation time. Our method is general ; it is applicable to any form of irregularities if the amount of distortion is small and provided unperturbed solution are attainable.
Advisors
Lee, Byung-Ho이병호
Description
한국과학기술원 : 기계공학과,
Publisher
한국과학기술원
Issue Date
1978
Identifier
62339/325007 / 000761026
Language
eng
Description

학위논문 (석사) - 한국과학기술원 : 기계공학과, 1978.2, [ [ii], 40 p. ]

URI
http://hdl.handle.net/10203/47013
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=62339&flag=dissertation
Appears in Collection
ME-Theses_Master(석사논문)
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