Patents for H03H 21 - Adaptive networks (3,855)
01/1997
01/21/1997US5596605 Radio receiver for use in the reception of digital multiplexing signals
01/21/1997US5595179 Adaptive persistence processing
01/21/1997CA2065913C Multi-channel active acoustic attenuation system
01/14/1997US5594677 Method and apparatus for filtering high resolution digital signals
01/14/1997US5594556 Scanner having a misalignment detector
01/09/1997WO1997001101A1 A power spectral density estimation method and apparatus
01/09/1997WO1996032776A3 Signal amplification system with automatic equalizer
01/09/1997CA2224680A1 A power spectral density estimation method and apparatus
01/07/1997US5592548 System and method for avoiding false convergence in the presence of tones in a time-domain echo cancellation process
01/07/1997US5592340 Communication channel with adaptive analog transversal equalizer
01/07/1997CA2047164C Adaptive equalizer with channel impulse response estimation
01/02/1997EP0751653A2 FIR equalizer for data signals
01/02/1997EP0751619A1 Noise cancelling method and noise canceller
01/02/1997EP0751491A2 Method of reducing noise in speech signal
01/01/1997CN1139501A Method for determining location of echo in an echo cancellar
01/01/1997CN1033734C Adaptive multistandard video comb filter
12/1996
12/31/1996US5590204 Device for reproducing 2-channel sound field and method therefor
12/31/1996US5590160 Symbol and frame synchronization in both a TDMA system and a CDMA
12/31/1996US5590154 Equalizer circuit and a method for equalizing a continuous signal
12/31/1996US5590121 Method and apparatus for adaptive filtering
12/31/1996CA2104338C Adaptive equalizer method and apparatus
12/27/1996EP0750395A1 Adaptive filter and method for implementing echo cancellation
12/25/1996CN1138795A Signal processing apparatus and method
12/25/1996CN1138793A Equalization apparatus with effective coefficient updating operation
12/25/1996CN1138787A Modem receiver pre-emphasis
12/20/1996CA2177625A1 Adaptive filter and method for implementing echo cancellation
12/18/1996EP0748551A1 Combating signal interference in digital transmission
12/18/1996EP0627136B1 Method and apparatus for ghost cancelling and/or equalizing
12/18/1996CN1138183A Method of adapting noise masking level in analysis-by-synthesis speech coder employing short-team perceptual weichting filter
12/17/1996US5586189 Active adaptive control system with spectral leak
12/17/1996US5586100 Transversal filter and method for cancelling intersymbol interference
12/17/1996US5586068 Adaptive electronic filter
12/17/1996US5585861 Luminance and chrominance signals separating filter adaptive to movement of image
12/17/1996US5585587 Acoustic image localization apparatus for distributing tone color groups throughout sound field
12/17/1996CA2052252C Technique for adjusting signal dispersion cancellation apparatus in communications systems
12/11/1996EP0748124A2 Signal processing apparatus and method
12/11/1996EP0746290A1 Improved method and system for on-line system identification
12/08/1996CA2170469A1 Signal processing apparatus and method
12/05/1996WO1996038933A1 System and method for avoiding false convergence in the presence of tones in a time-domain echo cancellation process
12/04/1996EP0746134A2 Acoustic echo canceler
12/04/1996EP0746133A2 Multistage echo canceller including time variation compensation
12/04/1996EP0746097A1 Method and circuit arrangement for processing a signal containing interference
12/03/1996US5581619 Vehicle internal noise reduction system and method
12/03/1996US5581581 Viterbi equalizer
12/03/1996US5581495 Adaptive signal processing array with unconstrained pole-zero rejection of coherent and non-coherent interfering signals
12/03/1996US5581494 Adaptive discrete-time transversal filter
11/1996
11/26/1996US5579340 Waveform equalizer
11/26/1996CA2069993C Adaptive maximum likelihood sequence estimator using channel estimators of respective order of impulse response
11/20/1996EP0743634A1 Method of adapting the noise masking level in an analysis-by-synthesis speech coder employing a short-term perceptual weighting filter
11/20/1996EP0742971A1 Adaptative feedforward and feedback control system
11/19/1996US5577127 System for rapid convergence of an adaptive filter in the generation of a time variant signal for cancellation of a primary signal
11/19/1996US5576983 Arithmetic circuit for adaptive equalizer of LMS algorithm of reduced amount of operation
11/13/1996CN1135692A Echo-eliminating device
11/12/1996CA2079292C Fast response matched filter receiver with decision feedback equalizer
11/07/1996WO1996035266A1 Adaptive sub-band filtering
11/07/1996WO1996035259A1 Method of modelling the spectrum of a signal and apparatus for realizing the method
11/06/1996EP0741477A1 Digital phase filter
11/06/1996CN1135129A Timing recovery in network-synchronized modem
11/05/1996US5572545 Process for starting up a modem containing a variable-phase echo canceller and modem in which such a process is implemented
11/05/1996US5572262 Receiver based methods and devices for combating co-channel NTSC interference in digital transmission
10/1996
10/31/1996DE19615257A1 DS-CDMA rate receiver with subchip resolution
10/29/1996CA2156001A1 Initial phase-loading circuit for a fractionally-spaced linear equalizer
10/25/1996CA2173885A1 Cdma rake receiver with sub-chip resolution
10/22/1996US5568558 Adaptive noise cancellation device
10/22/1996US5568519 Method and apparatus for separating a signal mix
10/22/1996US5568411 Processing system
10/17/1996WO1996032776A2 Signal amplification system with automatic equalizer
10/16/1996EP0738049A1 Spread spectrum signal receiver using an autoadaptive detection threshold
10/16/1996EP0651899A4 Adaptive canceller filter module.
10/16/1996CN1133655A A variable block size adaptation algorithm for noise-robust acoustic echo cancellation
10/15/1996US5566167 Subband echo canceler
10/09/1996EP0736995A2 Improvements in or relating to speech recognition
10/09/1996EP0736235A1 Method for determining the location of echo in an echo cancellar
10/09/1996CN1132969A Rapid-update adaptive channel-equalization filtering for digital radio receivers, such as HDTV receivers
10/08/1996US5563954 Microphone apparatus
10/08/1996US5563911 Equalizer for data receiver apparatus
10/08/1996US5563888 Carrier offset tracking for a receiver using channel impulse response
10/08/1996US5563817 Adaptive canceller filter module
10/08/1996US5563816 High-resolution digital filter
10/02/1996EP0735716A2 Timing recovery in a network-synchronized modem
10/02/1996EP0735674A2 Method and apparatus for adaptive filtering
10/02/1996EP0484383B1 Digital filter and method of design
10/01/1996US5561424 Data converter with minimum phase fir filter and method for calculating filter coefficients
10/01/1996CA2171778A1 Method and apparatus for adaptive filtering
10/01/1996CA2051147C Echo canceller using impulse response estimating method
09/1996
09/25/1996EP0734133A1 Equalisation system for multicarrier receiver
09/18/1996EP0732838A2 Acoustic echo cancellor
09/18/1996EP0732833A1 Carrier recovery circuit
09/18/1996EP0732831A2 Decision-feedback equalizer with alarm ciruit
09/18/1996EP0667066B1 Echo compensation device
09/17/1996US5557646 Multipath eliminating filter
09/11/1996EP0731593A2 Echo removing apparatus
09/11/1996EP0731567A2 Maximum likelihood sequence estimator and maximum likelihood sequence estimating method
09/11/1996CN1130837A Blind multipath correction for digital communication channel
09/11/1996CN1130830A Hybrid equalizer arrangement for use in data communication equipment
09/10/1996US5555200 Charge domain bit-serial multiplying digital-analog converter
09/10/1996CA2171406A1 Maximum likelihood sequence estimator and maximum likelihood sequence estimating method
09/06/1996WO1996021304A3 Combating signal interference in digital transmission
09/04/1996EP0730262A2 Noise cancelling device capable of achieving a reduced convergence time and a reduced residual error after convergence
09/04/1996CN1130330A Composite wave filter
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