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:
Apr. 30, 2013
Filed:
Jun. 07, 2010
Alon Konchitsky, Santa Clara, CA (US);
Alberto D Berstein, Cupertino, CA (US);
Sandeep Kulakcherla, Santa Clara, CA (US);
William Martin Ribble, San Jose, CA (US);
Kevin Fitzgerald, Pleasanton, CA (US);
Don Seferovich, Nevada City, CA (US);
Alon Konchitsky, Santa Clara, CA (US);
Alberto D Berstein, Cupertino, CA (US);
Sandeep Kulakcherla, Santa Clara, CA (US);
William Martin Ribble, San Jose, CA (US);
Kevin Fitzgerald, Pleasanton, CA (US);
Don Seferovich, Nevada City, CA (US);
Other;
Abstract
A noisy signal is picked up by a microphone, digitized by an Analog to Digital Converter and fed to a processor for analysis and wind noise reduction. Most of noise reduction methods are based on the assumption that the interfering noise is stationary or slowly varying compared with speech. This assumption allows 'learning' the characteristics of the noise between speech pauses and, based on a noise estimate, to build different filters that reduce the noise. In the case of wind noise this basic assumption is not valid. Wind noise is highly non-stationary, its power and spectral characteristics vary greatly. Because wind noise is not stationary, regular noise reduction methods cannot be used to reduce wind noise. For reducing wind noise effects in a device, the presence of wind should be detected reliably and then a novel approach presented here must be applied to eliminate the wind noise.