A socio-psychological study on the occurrence factors of discomfort in very quiet situations considering individual differences in emotional reactions

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K04804
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 23020:Architectural environment and building equipment-related
• Research Institution: Ibaraki University
• Principal Investigator: Tsujimura Sohei 茨城大学, 理工学研究科(工学野), 准教授 (80409458)
• Co-Investigator(Kenkyū-buntansha): 朝倉 巧 東京理科大学, 理工学部機械工学科, 准教授 (60778207)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 集合住宅 / 音環境 / 遮音性能 / 騒音感受性 / 不快感 / アンケート調査 / 聴感評価実験 / 構造方程式モデリング

Outline of Final Research Achievements

In recent years, we have systematically organized the factors of individual attributes that influence the evaluation of sound environment for a new noise problem in which occupants complain of discomfort even when the noise level is low in the rooms of apartment complexes. The results showed that "subjective impression for sound insulation performance," "noise sensitivity," and "presence or absence of children" affect the psychological evaluation of the sound source. Furthermore, it was shown that a disturbing impression is likely to lead to a distressing impression, and that even a small sound source is likely to lead to complaints. It was suggested that residents in units with high sound insulation performance are more likely to pay attention to sounds generated in their own units, and in particular, "toilet water supply and drainage noise" and "refrigerator machine noise" are more likely to be perceived as bothersome even at a small level, and are more likely to generate complaints.

Free Research Field

建築環境・設備

Academic Significance and Societal Importance of the Research Achievements

外部から透過する騒音レベルを低減させるような遮音性能の向上や、室内発生騒音のレベルの抑制など、従来の音のエネルギー量に基づく騒音低減手法の検討では解決が困難であった近年の新たな騒音問題に対して、本研究は遮音性能の高い居室にみられるような静穏な音環境下において生じる不快感の要因解明に繋がる知見を得た。「建物の遮音性能を高めて騒音を低減する」や「居室内で発生する騒音減のエネルギーを低減する」という従来のアプローチにより低い騒音レベルの音環境が実現されている一方で、新たに生じている騒音問題に対する解決策の一端を見出すことができた。