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:
Nov. 07, 2006
Filed:
Nov. 28, 2003
Sahar E. Bou-ghazale, Irvine, CA (US);
Sahar E. Bou-Ghazale, Irvine, CA (US);
Skyworks Solutions, Inc., Irvine, CA (US);
Abstract
A noise suppressor for suppressing noise in a source speech signal, where a method utilized by the noise suppressor comprises calculating a signal-to-noise ratio in the source speech signal, calculating a background noise estimate for a current frame of the source speech signal based on said current frame and at least one previous frame and in accordance with the signal-to-noise ratio, wherein the calculating the signal-to-noise ratio is carried out independent from the background noise estimate for the current frame, and subtracting the background noise estimate from the source speech signal to produce a noise-reduced speech signal. The method may also comprise calculating an over-subtraction parameter based on the signal-to-noise ratio, calculating a noise-floor parameter based on the signal-to-noise ratio, wherein the subtracting uses the over-subtraction parameter and the noise-floor parameter to produce the noise-reduced speech signal.