マイクロホン対の役割選択に基づく全方位音源追尾性能向上

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: 2024/04/01

タイトル(英語): Performance Improvement of Omnidirectional Sound Source Tracking by Role Selection of Microphone Pairs

著者名: 佐々木　遥人（東京電機大学工学部電気電子工学科），陶山　健仁（東京電機大学工学部電気電子工学科）

著者名(英語): Haruto Sasaki (Department of Electrical and Electronic Engineering, School of Engineering, Tokyo Denki University), Kenji Suyama (Department of Electrical and Electronic Engineering, School of Engineering, Tokyo Denki University)

キーワード: マイクロホンアレー，正方形マイクロホンアレー，円形マイクロホンアレー，全方位音源追尾　　microphone array，square microphone array，circular microphone array，omnidirectional sound source tracking

要約(英語): In this paper, an omnidirectional source tracking method based on sensitivity difference of microphone pairs is proposed. In the conventional method, we developed the direction estimation method based on a histogram integrating the estimation results of multiple two-microphone pairs. However, the estimation accuracy degradation often occurs despite the number of microphones. When a sound source exists at a wide angle to the microphone pairs, the estimation direction indicates highly sensitive to the measurement error of TDOA(Time-Difference-Of-Arrival) between microphones, and the estimation accuracy is greatly degradated. Therefore, it is considered that the same reliability should not be given to all estimation results to the same sound source. Because the estimation accuracy differs for each microphone pairs even for the same sound source, In the proposed method, such a difficulty is resolved by selecting the microphone pair used for the estimation, then the another pair is used just to judge whether the source exists in front or in back. As a result, the estimation accuracy can be improved with half the number of microphones of the conventional method. The effectiveness of method is shown from several experimental results.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.144 No.4 （2024） 特集Ⅰ：量子・情報・エレクトロニクスの医療/ヘルスケア応用　特集Ⅱ：電子回路関連技術

本誌掲載ページ: 387-396 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/144/4/144_387/_article/-char/ja/