Modeling of psychological response to tonal noise in consideration of overall frequency spectrum

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K14299
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 23020:Architectural environment and building equipment-related
• Research Institution: Maebashi Institute of Technology (2023); The University of Tokyo (2021-2022)
• Principal Investigator: Yonemura Miki 前橋工科大学, 工学部, 准教授 (90893727)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: 騒音評価 / 純音性騒音 / アノイアンス / 聴感評価実験

Outline of Final Research Achievements

To quantify the influence of tonal components in environmental noise on auditory impression, experimental data acquisition and modeling of penalties were attempted.
1. Evaluation of tonal noise with harmonics: Although the harmonics increased annoyance, it was suggested that the tonal audibility index specified in the international standard (IEC61400-11:2012) could be used to evaluate the noise in a similar way to that of tonal noise with a single tone.
2. Differences due to frequency characteristics of background noises: A linear relationship was found between tonal audibility and annoyance for the test sound simulating environmental noise, regardless of the tonal frequency. A quadratic polynomial was used to model the non-linearity between the tonal audibility and the sound pressure level of the test sound.

Free Research Field

建築音響，環境心理

Academic Significance and Societal Importance of the Research Achievements

近年は遮音性能の向上や機器の静音化により騒音のレベルだけでなく音質も問われるようになっており，その一例である純音性騒音について心理実験に基づいた評価方法を提案を示した。この成果は，純音性騒音の評価ガイドラインの検討に資するデータを提供することで，将来的には音環境の改善の改善につながると期待される。