DIRECTIONAL SPEAKER SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a directional speaker array in which a playback control point is installed in a main lobe direction and it is added to a design reference that playback sound is not deteriorated. SOLUTION: A directional speaker system of the present invention comprises: a speaker array 20 constituted of a plurality of speaker units arrayed in a linear or planar shape; a signal adjusting means 300 for adjusting input signals to the plurality of speaker units; and a control means 50 for controlling the signal adjusting means 300. The signal adjusting means 300 includes digital filters 31-310to which a filter coefficient is set on the basis of a boundary sound field control principle, and the control means 50 calculates the filter coefficient of the digital filters 31-310based on a relationship between a plurality of suppression control points and a playback control point and the principle of boundary sound field control and sets the filter coefficient of the digital filters 31-310. COPYRIGHT: (C)2009,JPO&INPIT