同期加算とスペクトル減算に基づく雑音環境に頑健な音響測距法

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: 2011/11/01

タイトル(英語): Robust Acoustic Distance Measurement Method Based on Synchronous Addition and Spectral Subtraction in Noisy Environments

著者名: 中山　雅人（近畿大学 生物理工学部），英　慎平（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／(株) ワイヤーデバイス）

著者名(英語): Masato Nakayama (Faculty of Biology-Oriented Sc. & Tech., Kinki Univ.), Shimpei Hanabusa (Faculty of Biology-Oriented Sc. & Tech., Kinki Univ.), Noboru Nakasako (Faculty of Biology-Oriented Sc. & Tech., Kinki Univ.), Toshihiro Shinohara (Faculty of Biology-Oriented Sc. & Tech., Kinki Univ.), Tetsuji Uebo (Faculty of Biology-Oriented Sc. & Tech., Kinki Univ./WIRE AUTOMATIC DEVICE Co., Ltd.)

キーワード: 位相干渉，距離推定，耐雑音，同期加算，スペクトル減算　　phase interference，distance estimation，noise-robust，synchronous addition，spectral subtraction

要約(英語): In many engineering fields, distance to targets is very important. General distance measurement method uses a time delay between transmitted and reflected waves, but it is difficult to estimate the short distance. On the other hand, the method using phase interference to measure the short distance has been known in the field of microwave radar. Therefore, we have proposed the distance estimation method based on interference between transmitted and reflected audible sound, which can measure the distance between microphone and target with one microphone and one loudspeaker. However, the distance measurement performance of the proposed method was degraded by additional noise in noisy environment. In this paper, the acoustic distance measurement method based on the interference between the transmitted wave and the reflected waves is expanded to a noise-robust method in a noisy environment. In order to measure distance in a low-signal-to-noise ratio (low-SNR) environment, we introduce a concept from synchronous addition and spectral subtraction to the proposed method. Evaluation experiments in a real environment reveal that the proposed method was valid and effective because the proposed method could measure distance in a low-SNR environment.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.131 No.11 （2011） 特集：電気関係学会関西連合大会

本誌掲載ページ: 1864-1870 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/131/11/131_11_1864/_article/-char/ja/