| 摘要 |
<p>Provided is a speaker device capable of forming an approximately uniform sound field over a range from a long distance to a short distance without markedly increasing the calculation load. A plurality of FIR filters (21-2n) perform delay control of speakers (51-5n) in a line array speaker (5) such that the delay time difference between the speakers adjacent to each other increases as the speakers approach one end of the line array speaker (5), thereby forming a sound field (12) over a wide range from a long distance to a short distance. By adding a common shift delay time (Dc) to the filter coefficients of the FIR filters (21-2n), the delay time difference between the adjacent speakers (51-5n) is made less than the sampling frequency of a sound signal, and the wide and uniform sound field (12) is formed.</p> |
