Characteristics of transmitting information by loudspeaker in a bad weather condition.

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K12494
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Natural disaster / Disaster prevention science
• Research Institution: Aichi Shukutoku University
• Principal Investigator: Amano Shigeaki 愛知淑徳大学, 人間情報学部, 教授 (90396119)
• Co-Investigator(Kenkyū-buntansha): 牧 勝弘 愛知淑徳大学, 人間情報学部, 教授 (50447033) ; 榊原 健一 北海道医療大学, リハビリテーション科学部, 准教授 (80396168) ; 山川 仁子 尚絅大学, 文化言語学部, 准教授 (80455196)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 拡声音 / 音声知覚 / 情報伝達

Outline of Final Research Achievements

To improve speech intelligibility of a loudspeaker announcement in noisy outdoor conditions such as a heavy rain and a snow storm, characteristics of announcement words, sound transmission, and speech perception were investigated. It was revealed that speech perception is degraded mainly by a time-delayed overlap of announcement caused by multi-loudspeakers' output especially with 100ms to 200ms time delay. Easy words for an intelligible announcement were proposed from the perspective of phoneme's noise tolerance and word familiarity.

Free Research Field

言語心理学