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:
Dec. 07, 2010
Filed:
Jan. 11, 2007
Ming Zhang, Cupertino, CA (US);
Wan-chieh Pai, San Jose, CA (US);
Ming Zhang, Cupertino, CA (US);
Wan-Chieh Pai, San Jose, CA (US);
Fortemedia, Inc., Cupertino, CA (US);
Abstract
A broadside small array microphone beamforming unit comprises a first omni-directional microphone to generate a signal X(), a second omni-directional microphone to generate a signal X(), a first delay unit delaying the signal X() to generate a signal X(−T), a second delay unit delaying the signal X() to generate a signal X(−T), a first substrator subtracting the signal X(−T) from the signal X() to generate a signal R(t)=X()−X(−T), a second substrator subtracting the signal X(−T) from the signal X() to generate a signal L(t)=X()−X(−T), a third delay unit delaying the signal R(t) to generate a signal R'(t)=R(t−D), a gain function unit convoluting the signal L(t) with a gain function G(t) to generate a signal L′(t)=L(t)*G(t−i), and a substrator subtracting the signal L′(t) from the signal R′(t) to generate a signal B′(t)=R′(t)−L′(t).