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:
May. 22, 2012
Filed:
Nov. 06, 2007
Shinichi Yoshizawa, Osaka, JP;
Yoshihisa Nakatoh, Kyoto, JP;
Shinichi Yoshizawa, Osaka, JP;
Yoshihisa Nakatoh, Kyoto, JP;
Panasonic Corporation, Osaka, JP;
Abstract
Provided is a sound source localization device which can detect a source location of an extraction sound, including at least two microphones; an analysis unit () which (i) analyze frequencies of the mixed sound including the noise and received by each microphone, and (ii) generates frequency signals; and an extraction unit () which, for each source location candidate, (a) adjusts time axes of the frequency signals corresponding to the microphones, so that there is no time difference between when the mixed sound reaches one microphone from the source location candidate and when the mixed sound reaches another microphone from the source location candidate, and (b) determines frequency signals having a difference distance equal to or smaller than a threshold value, from among the frequency signals corresponding to the microphones with the time axis having been adjusted, the difference distance representing a degree of a difference in the frequency signals between the microphones, and (c) extracts the source location of the extraction sound from among the source location candidates, in accordance with a degree of matching of the determined frequency signals between the microphones.