| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of generating a reference filter by which a sound quality is enhanced while keeping presence or echo feelings by eliminating influences peculiar to a dummy head, and to provide a generating method by which a localization is enhanced and the presence and the localizationnormal positioning can also be varied. <P>SOLUTION: As for a representative configuration of this method of generating the reference filte, first frequency characteristics are calculated from sound data acquired using the dummy head, second frequency characteristics are calculated by performing logarithmic averaging processing on an amplitude at predetermined intervals regarding a frequency in the first frequency characteristics, a temporary filter is generated that has characteristics inverse to the second frequency characteristics on which the logarithmic averaging processing is performed, third frequency characteristics are calculated which are corrected by multiplying the temporary filter and the first frequency characteristics and based on the third frequency characteristics, a filter is generated. <P>COPYRIGHT: (C)2007,JPO&INPIT |
