| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for correcting sound fields to realize a high-quality sound field space. <P>SOLUTION: Speakers 6FL to DWF are sounded by noise, when a sound field is corrected. Based on the detection results of reproduced sounds of the speakers 6FL to DWF, the rates of attenuation of attenuators between bands ATF11 to ATFki, which adjust gains to frequencies of bandpass filters BPF11 to BPFki of each channel, are corrected. Subsequently, based on detection results of reproduced sounds of the speakers 6FL to 6WF, the rates of attenuation of attenuators between channels ATG1 to ATG5 are corrected, and then the delay times of delay circuits DLY1 to DLY5 are corrected. Finally, the rate of attenuation of the attenuator between channels ATGk is corrected, based on the detection result of reproduced sounds of the speaker 6WF that is the sub-woofer speaker, to adjust the level of reproduced sounds which are reproduced by the speakers 6FL to 6WF so that the level is uniform (flat) in the audio frequency band. <P>COPYRIGHT: (C)2007,JPO&INPIT |
