4chビームフォーミングによる音源可視化装置の開発

摘要

Detecting the location of sound source is important in order to solve the noise problem. Beamforming is one of the sound visualization techniques, however the system has been apt to become large because the number of microphones is required. We had applied minimum variance method (Capon method) for beamforming processing; as a result, we developed sound visualization in real-time by using only 4 microphones.%騒音·振動問題の導入部としての音の可視化技術の種類と，少チャンネルによる音源可視化装置の開発と測定事例を紹介した.従来のシステム規模を大幅に縮小することができるとともに，小空間や時間変化の速い音の音源探査にも有効であることが確認できた.