Pulse or digital communications – Receivers – Automatic gain control
Reexamination Certificate
2004-11-16
2011-12-13
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Receivers
Automatic gain control
C375S354000, C375S316000
Reexamination Certificate
active
08077815
ABSTRACT:
A system and method for processing multi-channel audio signals is described herein. In one embodiment, the system includes a phase detector to determine, for a frequency band, a phase difference between first and second channel signals of the multi-channel digital audio signal. In one embodiment, the system also includes an attenuator to attenuate an amplitude of the frequency band if the phase difference exceeds a first predetermined threshold.
REFERENCES:
patent: 4811404 (1989-03-01), Vilmur et al.
patent: 5485524 (1996-01-01), Kuusama et al.
patent: 5528694 (1996-06-01), Van De Kerkhof et al.
patent: 5563358 (1996-10-01), Zimmerman
patent: 5677957 (1997-10-01), Hulsebus
patent: 5852630 (1998-12-01), Langberg et al.
patent: 5970152 (1999-10-01), Klayman
patent: 6222927 (2001-04-01), Feng et al.
patent: 6442278 (2002-08-01), Vaudrey et al.
patent: 6668061 (2003-12-01), Abel
patent: 6683959 (2004-01-01), Kuwano et al.
patent: 7120256 (2006-10-01), Grancea et al.
patent: 7242782 (2007-07-01), Kasai et al.
patent: 2001/0031053 (2001-10-01), Feng et al.
patent: 2003/0147538 (2003-08-01), Elko
patent: 2006/0247923 (2006-11-01), Chandran et al.
patent: 2008/0304671 (2008-12-01), Kulkarni
patent: 0553832 (1993-08-01), None
patent: 0608937 (2000-04-01), None
patent: 07064577 (1995-03-01), None
“At a Glance—The essential tool for professional digital audio”,Adobe Audition version 1.5, Microsoft Windows 2000/Windows XP, 2 Pages.
“Frequently Asked Questions—Frequently asked questions about Adobe Audition”,Adobe Audition version 1.5,, 3 Pages.
“New Feature Highlights—The essential tool for professional digital audio”,Adobe Audition version 1.5, Microsoft Windows 2000/Windows XP, 6 Pages.
“Unlimited, Low Cost, Instantly Available Background Music From the Original Source”,The Thompson Vocal Eliminator, 7 Pages.
Chandler, Jr., James , “[music-dsp] Extract the center Information from a stereo signal”, 2 Pages.
Barry, Dan, et al., “Real-time Sound Source Separation: Azimuth Discrimination and Resynthesis”,Audio Engineering Society 117th Convention, Convention Paper 6258, San Francisco, CA, (Oct. 28, 2004),pp. 1-7.
Adobe Systems Incorporated
Liu Shuwang
Schwegman Lundberg & Woessner, P.A.
Tayong Helene
LandOfFree
System and method for processing multi-channel digital audio... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for processing multi-channel digital audio..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for processing multi-channel digital audio... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4313540