| 摘要 |
<P>PROBLEM TO BE SOLVED: To accurately correct the frequency characteristics to target characteristics. <P>SOLUTION: A sound field correction device comprises: a parametric equalizer 9 that performs level adjustment on an inputted audio signal by frequency bands; and a control section which determines a normalized band signal level prior to signal level correction from sound collected by a microphone 30; calculates a signal correction level, corresponding to a frequency band that becomes a target of the present time, based on a normalized band signal level, after a signal level is corrected by a calculated signal correction level for other frequency bands, when determining the signal correction level by the frequency bands, in a predetermined order, and sets the parametric equalizer 9 so as to perform signal level correction of the audio signal, based on the signal correction level by frequency bands. <P>COPYRIGHT: (C)2009,JPO&INPIT |
