High-precision sound field auralization platform - late reverberation model and evaluation by performer

2022 Fiscal Year Final Research Report

• Project/Area Number: 19H04153
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 61020:Human interface and interaction-related
• Research Institution: Kyoto University
• Principal Investigator: Otani Makoto 京都大学, 工学研究科, 准教授 (40433198)
• Project Period (FY): 2019-04-01 – 2023-03-31
• Keywords: 室内音場 / 可聴化 / 臨場感コミュニケーション / 聴覚バーチャルリアリティ

Outline of Final Research Achievements

Communications via sounds such as speech and music are important in our daily life. To realize acoustic environments in which we can appropriately communicate using sounds in various spaces, so-called auralization, which enables a virtual presentation of auditory information as if a listener exists in those spaces, is effective. This study attempted to construct an analysis and modeling method of late reverberation, whose physical characteristics and perceptual effects are yet to be revealed and to develop an auralization system for a speaker or music performer. As a result, the study established a theoretical basis for analysis, modeling, and evaluation of late reverberation from a statistical approach. In addition, an auralization system for performers was developed with sufficient performance.

Free Research Field

建築音響学

Academic Significance and Societal Importance of the Research Achievements

本課題で構築した後期残響音の分析・モデル化の理論は，後期残響音という確定論的アプローチで扱うには複雑すぎる物理現象を扱うための確率論的アプローチの基礎となるものであり，学術的な意義が大きい．また，本課題で構築した自発音可聴化システムをさらに高精度化していくことで，発話者・演奏者の観点から音環境に関わる物理量及び心理的メカニズムを探求することが可能となる点に学術的な意義を有するとともに，コンサートホール等の設計において演奏者の観点からのフィードバックを提供することが可能なツールとなり得るためより良い音環境の実現に貢献できるという点に社会的意義を有している．