クロススペクトル法を用いた位相干渉に基づく音響測距システムの一実現

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: 2018/10/01

タイトル(英語): A Realization of Acoustic Distance Measurement System Based on Phase Interference Using Cross-Spectral Method

著者名: 宋　昌隆（近畿大学 生物理工学部），篠原　寿広（近畿大学 生物理工学部），上保　徹志（近畿大学 生物理工学部），中迫　昇（近畿大学 生物理工学部）

著者名(英語): Song ChangRyung (Faculty of Biology-Oriented Sci. & Tech., Kindai University), Toshihiro Shinohara (Faculty of Biology-Oriented Sci. & Tech., Kindai University), Tetsuji Uebo (Faculty of Biology-Oriented Sci. & Tech., Kindai University), Noboru Nakasako (

キーワード: 距離推定，試作システム，位相干渉，クロススペクトル法，音楽音源　　distance estimation，prototype system，phase interference，cross-spectral method，music sound source

要約(英語): The distance to a target is basic information in many engineering fields. As is generally known, the distance is typically estimated using time-of-flight (TOF) between transmitted and reflected impulses. However, it cannot be estimated in a close range where the reflected waves are buried in the transmitted wave. For distance estimation of close range targets using acoustic signals, we have proposed a method based on the phase interference between transmitted and reflected waves. In addition, by using cross-spectral method, we have proposed a method to remove the effect of the measuring system which is composed of loudspeaker, microphone, amplifiers and so on. Moreover, this method can also utilize environmental sound such as music and speech with arbitrary frequency spectrum as a transmitted sound besides a band-limited impulse sound. This paper describes a prototype system realizing this method by implementing it into a microcomputer system and confirms the result of experiment in actual sound field using music sound source.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.138 No.10 （2018） 特集：2017電気関係学会四国支部連合大会

本誌掲載ページ: 1223-1229 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/138/10/138_1223/_article/-char/ja/