パラボラ反射板を用いた可聴領域を変更可能な超指向性スピーカの開発

―パラボラ反射板の形状変更機構と等価点音源の提案―

抄録

The purpose of this study is to develop a super-directional loudspeaker with a variable audible range using a parabolic reflector. This paper proposes a cam-based mechanism for changing the shape of the parabola and a method for changing the audible range by an equivalent point source irradiating the parabola.