Optimal design of the well-based sound diffusers = 동공형 음향 확산체의 최적 설계

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Well-based diffusers have greatly developed since the introduction of Schroeder diffusers forty years ago. Nevertheless, common designs found nowadays still have a lack of efficiency, especially at low frequencies when arranged in arrays. The present study therefore aimed at proposing a method to design optimal well-based sound diffusers. Based on simulations performed with the boundary-element method, the different effects of the parameters determining the geometry of a well-based diffuser were first investigated so as to identify the key variables to take into consideration. According to these findings, an optimization strategy was adopted and optimal designs were suggested, which were then compared with a chosen reference diffuser. Finally, a method to improve the poor performance of one of the optimal designs in a specific frequency band was introduced.
Advisors
Ih, Jeong-Guonresearcher이정권researcherLee, Ik-Jinresearcher이익진researcher
Description
한국과학기술원 :기계공학과,
Publisher
한국과학기술원
Issue Date
2016
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 기계공학과, 2016.8 ,[v, 57 p. :]

Keywords

Sound diffusion; Well-based diffusers; Phase-grating diffusers; Optimization; Orthogonal arrays; 음향 확산; 동공형 음향 확산체; 위상 격자 음향 확산 구조; 최적화; 직교 배열

URI
http://hdl.handle.net/10203/221293
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=663307&flag=dissertation
Appears in Collection
ME-Theses_Master(석사논문)
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