Development of high-definition 3D sound infomation sensing systems and 3D auditory displays

2014 Fiscal Year Final Research Report

• Project/Area Number: 24240016
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Media informatics/Database
• Research Institution: Tohoku University
• Principal Investigator: SUZUKI Yo-iti 東北大学, 電気通信研究所, 教授 (20143034)
• Co-Investigator(Kenkyū-buntansha): IWAYA Yukio 東北学院大学, 工学部, 教授 (10250896) ; SAKAMOTO Shuichi 東北大学, 電気通信研究所, 准教授 (60332524) ; HONDA Akio 山梨英和大学, 人間文化学部, 准教授 (80433564) ; OTANI Tomoko 東北大学, 電気通信研究所, 助教 (40422406)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 音空間知覚 / 空間音響 / 3次元音響 / 聴覚ディスプレイ / マイクロホンアレイ / ディジタル信号処理 / 音信号処理 / アクティブリスニング

Outline of Final Research Achievements

To aim at advancing communications technologies, this study has tackled with developing basic technologies to sense and display 3D sound space information along with accumulating knowledge on human information processing of 3D spatial hearing, which is crucial to enhance the sense of presence. As for sensing technology, we have conducted research with spherical and cylindrical microphone arrays. One main result is formulation of new representation methods of head-related functions with the arrays. As for display technology, we have formulated, for example, new display algorithm which reproduce high-definition 3D sound field information at multiple areas. Moreover, as for spatial hearing, we have found a new phenomenon that the precision of human spatial hearing becomes worse when a listener is moving both actively and passively than that when a listener is still. We also try modelling this mechanism. This finding seems effective to develop future high-definition 3D sound systems.

Free Research Field

情報学