2023 Fiscal Year Final Research Report

Development of high-performance amplification technology based on elucidation of the production and perception of pop-out voices

Research Project

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Project/Area Number	20H00291
Research Category	Grant-in-Aid for Scientific Research (A)
Allocation Type	Single-year Grants
Section	一般
Review Section	Medium-sized Section 25:Social systems engineering, safety engineering, disaster prevention engineering, and related fields
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)	近藤眞理子早稲田大学, 国際学術院, 教授 (00329054) 北原真冬上智大学, 外国語学部, 教授 (00343301) 坂野秀樹名城大学, 情報工学部, 教授 (20335003) 牧勝弘愛知淑徳大学, 人間情報学部, 教授 (50447033) 北村達也甲南大学, 知能情報学部, 教授 (60293594) 米山聖子大東文化大学, 外国語学部, 教授 (60365856) 田嶋圭一法政大学, 文学部, 教授 (70366821) 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, 現代文化学部, 教授 (80455196) 竹本浩典千葉工業大学, 先進工学部, 教授 (40374102)
Project Period (FY)	2020-04-01 – 2024-03-31
Keywords	音声 / 音響特徴 / 音声知覚 / 音声生成 / ポップアウト
Outline of Final Research Achievements	One of the drawbacks of loudspeaker systems such as disaster prevention radio broadcasts is that the reliability of transmission is reduced due to acoustic disturbance factors such as wind and rain. To overcome this disadvantage, a pop-out voice, which is highly resistant to acoustic disturbance factors, should be used. As a result, we found that the audibility of the pop-out voice is about 2.6 times louder than the normal voice, and that one of the acoustic characteristics of the pop-out voice is its spectral shape with a peak in the frequency range of 1 to 4 kHz. Based on this finding, we devised an engineering method to synthesize pop-out voices by transforming the spectral shape.
Free Research Field	言語心理学
Academic Significance and Societal Importance of the Research Achievements	これまで不明であったポップアウト・ボイス(通る声)の音響的特徴とその聞こえやすさの程度を定量的に明らかにしたことや，ポップアウト・ボイスの合成変換方法を考案したことは，その科学的原理の解明と工学的実現に一歩近づいたと言える。このポップアウト・ボイスを防災無線放送等に使えば，災害時の緊急避難情報等が聞こえやすくなり人命の確保や負傷者数の低減に大きく貢献できる。従って本研究の社会的意義は極めて大きい。