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. 03, 2015
Filed:
Jan. 31, 2012
Juin-hwey Chen, Irvine, CA (US);
Thomas F. Baker, Dana Point, CA (US);
Evan S. Mccarthy, Irvine, CA (US);
Jes Thyssen, San Juan Capistrano, CA (US);
Walter J. Wihardja, Tustin, CA (US);
David C. Garrett, Tustin, CA (US);
Juin-Hwey Chen, Irvine, CA (US);
Thomas F. Baker, Dana Point, CA (US);
Evan S. McCarthy, Irvine, CA (US);
Jes Thyssen, San Juan Capistrano, CA (US);
Walter J. Wihardja, Tustin, CA (US);
David C. Garrett, Tustin, CA (US);
Broadcom Corporation, Irvine, CA (US);
Abstract
Systems and methods are described for enhancing the audio quality of an FM receiver. In embodiments described herein, a stop band noise signal is extracted from an L+R or L−R signal produced by an FM stereo decoder. A channel quality measure is calculated based on the stop band noise signal and is used to control whether a pop suppression technique is applied to the L+R signal. The channel quality measure and the stop band noise signal are also leveraged to perform single-channel noise suppression in the frequency domain on the L−R signal and on the L+R signal. The channel quality measure is also used to control the application of a fast fading compensation process that replaces noisy segments of the L−R and L+R signal with replacement waveforms generated via waveform extrapolation.