1chマイクロホンの観測信号と擬似観測信号間のクロススペクトルを用いた位相干渉に基づく音源距離推定

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: 2016/11/01

タイトル(英語): Estimation of the Distance to Sound Source based on Phase Interference using Cross-spectrum between Actual and Pseudo Observed Waves of a Single-channel Microphone

著者名: 本多　進哉（近畿大学 生物理工学部），中迫　昇（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），中山　雅人（立命館大学 情報理工学部 メディア情報学科）

著者名(英語): Shinya Honda (Faculty of Biology-Oriented Sci. & Tech., Kindai University), Noboru Nakasako (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), Masato Nakayama (Department of Media Technology, Faculty of Information Sci. & Engineering Tech., Ritsumeikan University)

キーワード: 音源推定，位相干渉，擬似観測信号，多重反射，距離スペクトル　　estimation of distance to a sound source，phase interference，pseudo-observed wave，multiple reflection，range spectrum

要約(英語): The sound source localization problem (identifying the distance and the direction from sound source) has been important in various engineering fields and many approaches have been developed, e.g., MUSIC (MUltiple SIgnal Classification). However, they often require a microphone array with multiple microphone elements to obtain such information. Meanwhile, since the distance to a target is also important, many distance measurement methods with sound have been proposed. We proposed an acoustic distance measurement (ADM) method based on interference between transmitted and reflected waves, which could measure distance at a short range. Existing ADM methods based on interference make errors due to the measuring system from the loudspeaker to the microphone. To remove the effect of the measuring system, a cross-spectral analysis was applied to the observed wave and the pseudo-observed wave, convolving the transmitted wave with the impulse response of the measuring system a priori measured. Attaching a microphone to a target causes multiple reflections (interference between the sound source and the target). This paper describes a method based on the phase interference to estimate the distance between a sound source and a target (reflector), using a single-channel cross-spectrum between the observed and the pseudo-observed waves. The validity and effectiveness of the proposed method is confirmed through simulation and experiment.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.136 No.11 （2016） 特集：電気関係学会関西連合大会

本誌掲載ページ: 1525-1531 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/136/11/136_1525/_article/-char/ja/