Patent ID: 8165326

Claim:
A sound field control apparatus comprising: a storage unit that stores position information of a plurality of speakers disposed in a three-dimensional space and position information of a sound receiving point of sounds generated from the plurality of the speakers; an input unit that inputs an audio signal and position information of a virtual audio source at which the audio signal is to be localized; and a localization controller that localizes the audio signal at a position of the virtual audio source, wherein the localization controller defines a virtual solid that is approximately polyhedral and that has vertices at respective positions of the plurality of the speakers, wherein the localization controller selects a face of the virtual solid through which a directional line directed from the sound receiving point to the virtual audio source passes, wherein the localization controller selects speakers located at vertices of the selected face as speakers to which the audio signal is output, and wherein the localization controller determines ratios of levels of the audio signal to be provided to the speakers located at the vertices of the selected face based on ratios of respective angles between the directional line and straight lines directed from the sound receiving point to the vertices of the selected face.