To change the direction of a sound image outputted from an output device in a simple operation.
The object is realized by providing voice signal inputs 31A, 31B, 31C, 31D, and 31E which input 3 or more voice signals making a sound image positioning at a different position from a position that makes a predetermined direction as a front direction when respective voices are output from 3 or more output devices 43, 44, 45, 46, and 47 placed in a predetermined space, a front direction designation part 48 which makes an arbitrary direction in the space where the output devices are placed as a front direction, a voice signal supply value adjusting part 32 which respectively adjusts signal supply value of inputted 3 or more voice signals to 3 or more output devices 43, 44, 45, 46, and 47 for respective output devices based on that the front direction is specified, and 3 or more output parts which respectively supply voice signals whose signal supply values are adjusted to 3 or more output devices 43, 44, 45, and 47.
Eiichi Tamura
Seiji Iga