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. 01, 2010
Filed:
Mar. 06, 2006
Joint signal and model based noise matching noise robustness method for automatic speech recognition
Luca Rigazio, Santa Barbara, CA (US);
David Kryze, Santa Barbara, CA (US);
Keiko Morii, Kanagawa, JP;
Nobuyuki Kunieda, Kanagawa, JP;
Jean-claude Junqua, Princeton, NJ (US);
Luca Rigazio, Santa Barbara, CA (US);
David Kryze, Santa Barbara, CA (US);
Keiko Morii, Kanagawa, JP;
Nobuyuki Kunieda, Kanagawa, JP;
Jean-Claude Junqua, Princeton, NJ (US);
Panasonic Corporation, Osaka, JP;
Abstract
A noise robustness method operates jointly in a signal domain and a model domain. For example, energy is added in the signal domain for frequency bands where an actual noise level of an incoming signal is lower than a noise level used to train models, thus obtaining a compensated signal. Also, energy is added in the model domain for frequency bands where noise level of the incoming signal or the compensated signal is higher than the noise level used to train the models. Moreover, energy is never removed, thereby avoiding problems of higher sensitivity of energy removal to estimation errors.