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:
Sep. 17, 2013
Filed:
Jul. 08, 2010
Mark Every, Palo Alto, CA (US);
Carlos Avendano, Campbell, CA (US);
Ludger Solbach, Mountain View, CA (US);
YE Jiang, Sunnyvale, CA (US);
Carlo Murgia, Sunnyvale, CA (US);
Mark Every, Palo Alto, CA (US);
Carlos Avendano, Campbell, CA (US);
Ludger Solbach, Mountain View, CA (US);
Ye Jiang, Sunnyvale, CA (US);
Carlo Murgia, Sunnyvale, CA (US);
Audience, Inc., Mountain View, CA (US);
Abstract
A robust noise reduction system may concurrently reduce noise and echo components in an acoustic signal while limiting the level of speech distortion. The system may receive acoustic signals from two or more microphones in a close-talk, hand-held or other configuration. The received acoustic signals are transformed to frequency domain sub-band signals and echo and noise components may be subtracted from the sub-band signals. Features in the acoustic sub-band signals are identified and used to generate a multiplicative mask. The multiplicative mask is applied to the noise subtracted sub-band signals and the sub-band signals are reconstructed in the time domain.