| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress variation of a hearing result followed by the variations in the hearing position, using a simple structure. <P>SOLUTION: An imaginary hearing position is used as a sound collecting position, and a propagation delay time assuming part 262 assumes the propagation delay time of a sound from each of a plurality of speakers to the sound collecting position, based on a sound collecting result at the sound collecting position of a synchronism measuring sound outputted from each of the plurality of speakers. Successively, a delay time calculating part 263 calculates the delay time to be provided to each of acoustic signals supplied to each of the plurality of speakers, based on an assumed propagation delay result so that an output sound can synchronously reach from each of the plurality of speakers, regarding each of a plurality of peripheral positions, in the periphery of the imaginary hearing position. Sound field correction is executed, based on an averaged result of correcting the sound collecting result of a characteristic measuring sound, in which the delay time is set based on the calculation result of the delay time to be outputted from each speaker. <P>COPYRIGHT: (C)2009,JPO&INPIT |
