Development of an advanced evaluation system for acoustic diffuseness and diffuse walls

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K18165
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Architectural environment/Equipment
• Research Institution: The University of Tokyo
• Principal Investigator: Lee Hyojin 東京大学, 大学院新領域創成科学研究科, 客員共同研究員 (70747641)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 建築音響 / 音響拡散 / 拡散壁 / 乱反射率 / 数値解析

Outline of Final Research Achievements

In this research, an advanced evaluation system for acoustic diffuseness　(scattering and diffusion coefficients) and diffuse walls were developed in order to establish shape design methodology of architectural walls. An analysis program for scattering coefficients was improved in terms of computational efficiency, and new calculation algorithm for diffusion coefficients was constructed by examining the influence of calculation parameters and sample arrangements. Furthermore, based on the plane of Penrose tiling, aperiodic structures, which suppress incident angle dependency and improve uniformity of reflection directivity characteristics, were developed by expanding in three dimensions.

Free Research Field

建築音響学