The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 27, 2006
Filed:
Feb. 13, 2001
Yoshiki Ohta, Saitama, JP;
Yoshiki Ohta, Saitama, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
In correcting the sound field, the loudspeakerstoare sounded by the noise. The attenuation factors of the inter-band attenuators ATFto ATFfor adjusting gains of the band-pass filters BPFto BPFto the frequency in respective channels are corrected based on detection results of the reproduced sounds of the loudspeakersto. Then, the attenuation factors of the channel-to-channel attenuators ATGto ATGare corrected based on the detection results of the reproduced sounds of the loudspeakersto. Then, the delay times of the delay circuits DLYto DLYare corrected based on the detection results of the reproduced sounds of the loudspeakersto. Then, the attenuation factor of the channel-to-channel attenuator ATGis corrected based on the detection result of the reproduced sound of the loudspeakeras the subwoofer, whereby the levels of the reproduced sounds reproduced by the loudspeakerstoare adjusted to be made flat over the audio frequency band.