Patent ID: 8879741
Filing Date: 2014-11-04
Classification: H04R,H04S

Abstract:
1. A speaker array apparatus comprising: a speaker array comprising a plurality of speakers; a signal divider that divides an input audio signal of a first channel into first and second audio signals at a predetermined ratio; a first mixer that mixes the first audio signal with an input audio signal of a second channel that is different from the first channel and outputs a first mixed audio signal; a second mixer that mixes the second audio signal with an input audio signal of a third channel that is different from the first and second channels and outputs a second mixed signal; and a control portion that controls directivities of the first and second mixed audio signals by controlling delay times of the first and second mixed audio signals input to each of the speakers so that the speaker array emits first and second sound beams of the first and second mixed audio signals, respectively, in directions corresponding respectively to the second and third channels, which are directed to a wall surface that reflects the first and second mixed audio signals, without separately emitting a sound beam of the first channel so that a total number of emitted beams is less than a number of the input audio signals of the first, second, and third channels.