337 3Dビームステアリングを用いたアクティブノイズコントロール
詳細
This paper deals with active noise control (ANC) using phased array speaker as a secondary source. Liner phased array speaker produces high directivity sound beam which lean to another direction against sound axis in two-dimensional region. ANC using a liner phased array achieves high degree of flexibility pinpoint control. This paper expands the steering range of high directivity sound beam to three-dimensional area from two-dimensional area by using a matrix phased array speaker and suggests ANC for three-dimensional acoustic field. Matrix phased array speaker enables efficient ANC system in arbitrary point in three-dimensional area.
