時間・周波数領域和音構造付与に基づく歯科治療音の快音化

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2015/12/01

タイトル(英語): A Design of Comfortable Dental Treatment Sound Based on Chord-forming in Time and Frequency Domains

著者名: 大塩　祥剛（立命館大学 大学院情報理工学研究科），生藤　大典（立命館大学 大学院情報理工学研究科），須原　裕子（立命館大学 大学院情報理工学研究科），中山　雅人（立命館大学 情報理工学部），西浦　敬信（立命館大学 情報理工学部）

著者名(英語): Yoshitaka Ohshio (Graduate School of Information Science and Engineering, Ritsumeikan University), Daisuke Ikefuji (Graduate School of Information Science and Engineering, Ritsumeikan University), Yuko Suhara (Graduate School of Information Science and Engineering, Ritsumeikan University), Masato Nakayama (College of Information Science and Engineering, Ritsumeikan University), Takanobu Nishiura (College of Information Science and Engineering, Ritsumeikan University)

キーワード: 和音，ピーク周波数，歯科治療音，快音化　　Chord，Spectral peak，Dental treatment sound，Comfortable sound design

要約(英語): In a dental treatment, doctors and patients often feel strong discomfort feeling by hearing the dental treatment sound. It is caused by spectral peaks in a higher frequency. For reducing discomfort feeling of spectral peaks, we have previously proposed the discomfort reduction method that can mask spectral peaks on basis of auditory masking by emitting the masking signal. In principle, this method has a problem that it requires emission of the masking signal with higher power. It may inflict discomfort feeling on listeners. On the other hand, we focus on chords in music theory because they are generally known as typical comfortable sounds. The chords have the spectral structure that multiple spectral peaks are held with specific rules, and the temporal structure changes on basis of the chord progression of musical pieces. These suggest that we may design the comfortable sound by reforming the spectral structure of the dental treatment sound to that of chords. In this paper, we therefore propose the comfortable sound design method based on chord-forming of the spectral peak in time and frequency domains for the dental treatment sound. As a result of subjective evaluation experiments, we confirmed the effectiveness of the proposed method.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.135 No.12 （2015） 特集：電気・電子・情報関係学会東海支部連合大会

本誌掲載ページ: 1565-1573 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/135/12/135_1565/_article/-char/ja/