| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an individual acoustic environment having a presence feeling without hindering visibility of a viewer, by effectively reducing a leakage sound of the other seat even when there are an environmental change and a secular change. Ž<P>SOLUTION: An acoustic system performs adaptive filter control using a new filter factor of adding a plurality of filter factors multiplied to the same voice signal among filter factors used for controlling an adaptive filter, when the same voice signal is output in adjacent individual spaces, when providing the individual acoustic environment by performing the adaptive filter control for reducing the leakage sound, using the adaptive filter for reducing the leakage sound of leaking from the other individual space for the respective individual spaces arranged in a predetermined space. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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