SOUND IMAGE POSITIONING DEVICE, SOUND IMAGE POSITIONING SYSTEM, SOUND IMAGE POSITIONING METHOD, PROGRAM, AND INTEGRATED CIRCUIT

摘要

A sound positioning device outputs a sound from a plurality of speakers so that a sound image is positioned at a predetermined spatial position viewed from a listener. The sound positioning device includes: amplitude characteristic adjusting means for adjusting amplitude frequency characteristic of an inputted acoustic signal so that a sound image is positioned at a position defined by a front position of the listener which is rotated around the position of the listener in the upward direction by a first angle; and a plurality of level adjusting means which are arranged to correspond to the plurality of speakers, adjusts the level of an acoustic signal outputted from the amplitude characteristic adjusting means, and outputs the adjusted acoustic signal to the corresponding speakers. Each of the level adjusting means adjusts the level of the acoustic signal outputted from the amplitude characteristic adjusting means to a level of a corresponding speaker so that the sound image is positioned at a predetermined position rotated around the position of the listener in one of the directions orthogonally intersecting the position rotated by the fist angle.