Development of Personalized Spatial Cognitive System using Audio - Visual Virtual Reality Technique.

2014 Fiscal Year Final Research Report

• Project/Area Number: 24500153
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Media informatics/Database
• Research Institution: Tokyo Denki University
• Principal Investigator: WATANABE Yuko 東京電機大学, 情報環境学部, 講師 (20287444)
• Co-Investigator(Kenkyū-buntansha): SHIBATA Tatsuya 東京電機大学, 情報環境学部, 教授 (30349807)
• Co-Investigator(Renkei-kenkyūsha): FUJII Fumitake 山口大学, 理工学研究科, 准教授 (30274179)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: Specular reflection / 3D Shape features / Sound localization / Binaural hearing / Pinna shape

Outline of Final Research Achievements

In general, it is known that an ability of sound localization in a median plane is different in individuals. In the previous work, we analyzed the relationship between the ability and pinna shape features such as a pinna length and a pinna angle, which are invariants for sound directions. And we reached to the hypothesis that the pinna shape features should depend on sound directions. To prove this, we introduce the specular-reflection shape method for 3D shape models with light directions. This method is applied by replacing light directions and the vision point, with sound directions and receiving point of sound, respectively, to analyze pinna shape features. Using this model, we analyze the relationship between the sound localization ability and the specular-reflection shape-feature descriptors. And we conclude that the specular reflection shape method is related to sound localization ability in the median plane and some pinna parts may modify the sound localization ability.

Free Research Field

音響工学、ディジタル信号処理、空間音響