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:
Feb. 28, 2012
Filed:
Dec. 09, 2005
Applicant:
Samuel Ponvarma Ebenezer, Tempe, AZ (US);
Inventor:
Samuel Ponvarma Ebenezer, Tempe, AZ (US);
Assignee:
Acoustic Technologies, Inc., Mesa, AZ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10L 11/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
An audio signal is divided among exponentially related subband filters. The spectral flatness measure in each subband signal is determined and the measures are weighted and combined. The sum is compared with a threshold to determine the presence of music or noise. If music is detected, the noise estimation process in the noise reduction circuitry is turned off to avoid distorting the signal. If music is detected, residual echo suppression circuitry is also turned off to avoid inserting comfort noise.