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:
Aug. 24, 2010
Filed:
May. 20, 2004
Kaori Endo, Kawasaki, JP;
Takeshi Otani, Kawasaki, JP;
Mitsuyoshi Matsubara, Yokohama, JP;
Yasuji Ota, Kawasaki, JP;
Kaori Endo, Kawasaki, JP;
Takeshi Otani, Kawasaki, JP;
Mitsuyoshi Matsubara, Yokohama, JP;
Yasuji Ota, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A noise reduction apparatus includes an analysis unit for converting input into a signal of a frequency area, a suppression unit for suppressing the signal, and a synthesis unit for synthesizing a signal of a time area. The apparatus further includes an estimation unit for estimating, using the output of the analysis unit, information corresponding to at least pure voice element excluding noise element in an input voice signal as voice information which is the basic voice information for calculation of a suppression gain of a signal, and a unit for calculating a suppression gain corresponding to the output of the estimation unit and the analysis unit and providing it for the suppression unit.