| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide independent acoustic environment having present while reducing leak sound from the other seat. <P>SOLUTION: A leak sound reduction filter 12 produces control sound for denying the sound leaked from the other speaker installed in a second independent space to a first independent space based on a leak sound transmission function between the other speaker/an error microphone and an error route transmission function between a self-speaker/an error microphone, and provides the produced control sound to the self-speaker. An assumed sound source filter 14 produces an assumed sound source, i.e., a provided sound for delivering a sound image to a front side of an audience, and a rear side sound source reverse filter corrects a rear side fixed position of the sound image generated by regenerating the assumed sound source 5 by the self-speaker to the audience side. The acoustic system is constituted such that a first auxiliary filter provides the dynamically presumed leak sound transmission function and the error route transmission function to the leak sound reduction filter, and a second auxiliary filter provides the dynamically presumed error route transmission function to the rear side sound source reverse filter. <P>COPYRIGHT: (C)2009,JPO&INPIT |
