Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Communications
Class Information
Number: 379/406.09
Name: Telephonic communications > Echo cancellation or suppression > Using digital signal processing > Adaptive filtering > Least mean squares (lms) algorithm
Description: Subject matter in which the least mean square algorithm is used in the adaptive filter.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8693677 Techniques for updating filter coefficients of an adaptive filter Apr. 8, 2014
8675883 Apparatus and associated methodology for suppressing an acoustic echo Mar. 18, 2014
8619897 Method and apparatus of frequency domain echo canceller Dec. 31, 2013
8600038 System and method for echo cancellation Dec. 3, 2013
8600039 System for low complexity adaptive ECHO and NEXT cancellers Dec. 3, 2013
8564339 Method and system for measuring amplitude and phase difference between two sinusoidal signals Oct. 22, 2013
8515055 Adaptive filtering with flexible selection of algorithm complexity and performance Aug. 20, 2013
8499020 Method and system for estimating and applying a step size value for LMS echo cancellers Jul. 30, 2013
8488776 Echo suppressing method and apparatus Jul. 16, 2013
8428114 Transmit equalizer compensation for probe receivers Apr. 23, 2013
8385557 Multichannel acoustic echo reduction Feb. 26, 2013
8340278 Method and apparatus for cross-talk resistant adaptive noise canceller Dec. 25, 2012
8320554 Acoustic echo canceller clock compensation Nov. 27, 2012
8284949 Multi-channel acoustic echo cancellation system and method Oct. 9, 2012
8275142 Acoustic echo cancellation system Sep. 25, 2012
8265263 Delayed adaptation structure for improved double-talk immunity in echo cancellation devices Sep. 11, 2012
8259928 Method and apparatus for reducing timestamp noise in audio echo cancellation Sep. 4, 2012
8199907 Echo canceller and echo cancelling method and program Jun. 12, 2012
8144863 Method and apparatus for echo cancellation Mar. 27, 2012
8094809 Frame-based level feedback calibration system for sample-based predictive clipping Jan. 10, 2012
8050201 LMS adaptive filter for digital cancellation of second order inter-modulation due to transmitter leakage Nov. 1, 2011
8027279 Echo cancellation Sep. 27, 2011
8014517 Method and apparatus for enhanced convergence of the normalized LMS algorithm Sep. 6, 2011
7809129 Acoustic echo cancellation based on noise environment Oct. 5, 2010
7783032 Method and system for processing subband signals using adaptive filters Aug. 24, 2010
7693291 Multi-channel frequency-domain adaptive filter method and apparatus Apr. 6, 2010
7660425 Acoustic echo cancellation Feb. 9, 2010
7657038 Method and device for noise reduction Feb. 2, 2010
7502461 Echo cancellation in a communication network Mar. 10, 2009
7480377 Dual adaptive filter apparatus and method Jan. 20, 2009
7200222 Echo canceller employing dual-H architecture having variable adaptive gain settings Apr. 3, 2007
7190775 High quality audio conferencing with adaptive beamforming Mar. 13, 2007
7177419 Methods and apparatuses for detecting and reducing non-linear echo in a multi-carrier communication system Feb. 13, 2007
7146003 Noise level calculator for echo canceller Dec. 5, 2006
7035397 System and method for updating filter coefficients and echo canceller including same Apr. 25, 2006
7031461 Robust adaptive filter for echo cancellation Apr. 18, 2006
7020246 Time domain reflected signal measurement using statistical signal processing Mar. 28, 2006
7020279 Method and system for filtering a signal and for providing echo cancellation Mar. 28, 2006
7003095 Acoustic echo canceler and handsfree telephone set Feb. 21, 2006
7003101 Subband echo location and double-talk detection in communication systems Feb. 21, 2006
6996231 Step size convergence control Feb. 7, 2006
6975722 Dual echo canceller with fast reflector identification Dec. 13, 2005
6970558 Method and device for suppressing noise in telephone devices Nov. 29, 2005
6961423 Method and apparatus for performing adaptive filtering Nov. 1, 2005
6952472 Dynamically estimating echo return loss in a communication link Oct. 4, 2005
6947549 Echo canceller Sep. 20, 2005
6947553 Communication system for controlling training of echo canceller and line switching system Sep. 20, 2005
6947395 Locating network echos Sep. 20, 2005
6944289 Delay insertion for echo cancellation, with echo supression, in a communication network Sep. 13, 2005
6944288 Double-talk and path change detection using a matrix of correlation coefficients Sep. 13, 2005

1 2 3 4










 
 
  Recently Added Patents
Pear tree named `PremP109`
Replacing memory pointers with implicit pointers to be used in compiler-generated debug output
Progressively discovering and integrating services
Complete context search system
Communication apparatus, communication method, and communication system
Battery terminal with current sensor
Method and apparatus for representing sensory effects and computer readable recording medium storing user sensory preference metadata
  Randomly Featured Patents
Extension of two-dimensional variable length coding for image compression
System and method for using a game controller device for electronic trading
Wind instrument finger exercise device
Digital sampling rate conversion of color TV signal
Optical medium aligned information system and method
Sealant material
System and method for electroporating a sample
Easily storable dust collecting container
Pacifier
Silicon carbide ceramics containing a dispersed high metal content silicide phase