2022 Fiscal Year Final Research Report
How extent should the influence of acoustic transfer characteristics in sound field control with inverse filtering be compensated for ?
| Project/Area Number |
19K12079
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 61020:Human interface and interaction-related
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| Research Institution | Shizuoka University |
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Principal Investigator |
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| Project Period (FY) |
2019-04-01 – 2023-03-31
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| Keywords | 音場制御 / 逆システム / 室内音響伝達特性 / 聴感の自然性 |
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| Outline of Final Research Achievements |
This study examined the factors affecting the sound quality synthesized on the sweet spot in the sound field control system with inverse filtering and the conditions for users to enjoy reproduced sound naturally without discomfort.
As a result of studying the influence of user head movement and its correction, it was found that the control accuracy deteriorates when the user moves away from the original listening position, but that a simple correction method based on the distance moved can also suppress the deterioration of the control accuracy.
Furthermore, it was found that the influence of human auditory characteristics may be more dominant in human perception of synthesized sounds than the accuracy of sound synthesis.
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| Free Research Field |
音情報処理
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| Academic Significance and Societal Importance of the Research Achievements |
音場の個人化に関する近年の研究動向として，波面合成方式をベースとしているためにスピーカ数の大規模化を招いているという問題に直面している点が挙げられる．本研究が基盤とする逆システムに基づく手法では，音響伝達特性の変動に弱く，マルチモーダルな拡張現実への柔軟な展開には課題があった．
本研究では，比較的少数のスピーカによって身体的に制約の少ない状態で運用可能な可搬性の高いシステムを構築するための基盤的な知見が得られた点に学術的意義や社会的意義があったと考えられる．
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