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:
Oct. 16, 2012
Filed:
Jan. 25, 2008
Kazuhiro Nakadai, Saitama, JP;
Hiroshi Tsujino, Saitama, JP;
Hirofumi Nakajima, Saitama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
There is provided a sound source characteristic determining device () capable of being applied in an environmental where the type of a sound source is unknown. The device includes a plurality of beamformers (-to-M) used when a sound source signal generated from a sound source at an arbitrary position in a space is inputted to a plurality of microphones (-to-N), for weighting the acoustic signal detected by each of the microphones by using a function for correcting the difference of the sound source signals generated between the microphones and outputting a totaled signal. Each of the beamformers (-to-M) contains a function having a unit directivity characteristic corresponding to one arbitrary direction in the space and is arranged for each of the directions corresponding to an arbitrary position in the space and the unit directivity characteristic. The sound source characteristic determining device () further includes means () for estimating the position and the direction in the space corresponding to the beamformer outputting a maximum value as the position and the direction of the sound source when the microphone () detects a sound source signal.