Patents for H03H 21 - Adaptive networks (3,855)
08/1995
08/30/1995EP0669598A1 Filter for reducing noise and exalting image digital signals edges according to fuzzy logic
08/29/1995US5446787 Method for avoiding self-oscillation in conjunction with echo cancellation
08/23/1995EP0668703A2 Video comb filter
08/22/1995US5444739 Equalizer for data receiver apparatus
08/22/1995US5444443 Sound source determining system
08/16/1995EP0667698A2 Transmission of data signals over telephone lines
08/16/1995EP0667687A1 Echo canceller
08/16/1995EP0667080A1 Apparatus and method for controlling an echo canceler
08/16/1995EP0667066A1 Echo compensation device.
08/15/1995US5442543 Neural filter architecture for overcoming noise interference in a non-linear, adaptive manner
08/08/1995US5440641 Active noise cancellation system
08/08/1995US5440503 Digital filtering circuit operable as a three-stage moving average filter
08/03/1995WO1995020841A1 Adaptative feedforward and feedback control system
07/1995
07/26/1995EP0664187A1 Grinding tape and method of manufacturing the same
07/19/1995EP0663085A1 Method and apparatus for reduced-complexity viterbi-type sequence detectors
07/18/1995US5434912 Audio processing system for point-to-point and multipoint teleconferencing
07/12/1995EP0560945A4 Adaptive decision feedback equalizer apparatus for processing information stored on digital storage media
07/11/1995US5432818 Method and apparatus of joint adaptive channel encoding, adaptive system filtering, and maximum likelihood sequence estimation process by means of an unknown data training
07/11/1995US5432794 Automatic Equalizer
07/11/1995US5432725 Self-adapting filter
07/06/1995WO1995018523A1 Method and apparatus for encoding multibit coded digital sound through subtracting adaptive dither, inserting buried channel bits and filtering, and encoding and decoding apparatus for use with this method
07/05/1995EP0661833A1 Baseband amplitude/frequency characteristic estimator
07/05/1995EP0661832A2 Method of and apparatus for identifying a system with adaptive filter
07/05/1995EP0661807A2 Active adaptive control system with spectral leak
07/04/1995US5430661 Adaptive decision feedback equalizer apparatus for processing information stored on digital storage media
07/01/1995CA2139218A1 Multiphase signal amplitude-frequency characteristic basebaud estimator
06/1995
06/29/1995WO1995017784A1 Method for determining the location of echo in an echo cancellar
06/28/1995EP0660543A2 System and method of adaptive maximum likelihood sequence estimation
06/28/1995EP0660321A2 Reproduced waveform equalization circuit
06/28/1995EP0659312A1 Decision feedback equalizer method and apparatus
06/27/1995US5428681 Apparatus and method for reducing the risk of undesirable parameter drift of an adaptive filter used for echo cancellation
06/27/1995US5428562 For use in echo cancellation
06/22/1995DE4444583A1 Selecting physical characteristic from parameter data for digital filter
06/20/1995US5426597 Adaptive infinite impulse response (IIR) filter system
06/14/1995DE4434723C1 Adaptive network for digital transmission system
06/13/1995US5425105 Multiple adaptive filter active noise canceller
06/07/1995EP0656695A1 Method for the adaptive control of a digital echo canceller in a telecommunication system
06/06/1995US5422606 Automatic equalizer
06/06/1995CA2023178C Wideband digital equalizers for subscriber loops
06/03/1995CA2137130A1 Method for the adaptive control of a digital echo canceller in a telecommunication system
06/01/1995DE3152560C2 Method and device for processing a measurement signal subject to fluctuations
05/1995
05/31/1995EP0655731A2 Noise suppressor available in pre-processing and/or post-processing of a speech signal
05/31/1995EP0655158A1 Method and apparatus for attenuating an unwanted signal in a mix of signals
05/31/1995EP0655151A1 Multiple interacting dve algorithm
05/30/1995US5419198 Electronic signal enhancement and separation for machinery diagnostics
05/30/1995CA2055831C Adaptive filter and a method of preventing divergent behavior of the adaptive filter
05/24/1995EP0654901A1 System for the rapid convergence of an adaptive filter in the generation of a time variant signal for cancellation of a primary signal
05/23/1995US5418817 Adaptive equalization system and method
05/23/1995US5418816 Automatic equalizer
05/23/1995CA1335674C Electronic filters, signal conversion apparatus, hearing aids and methods
05/16/1995US5416846 Noise control system and method
05/16/1995US5416844 Apparatus for reducing noise in space applicable to vehicle passenger compartment
05/16/1995US5416799 Dynamically adaptive equalizer system and method
05/11/1995WO1995012919A1 A variable block size adaptation algorithm for noise-robust acoustic echo cancellation
05/10/1995EP0651899A1 Adaptive canceller filter module
05/09/1995US5414732 Adaptive equalizer and method for operation at high symbol rates
05/09/1995US5414571 Adaptive equalization circuit for magnetic recording apparatus having high error immunity
05/09/1995CA2013071C Multi-channel adaptive canceler
05/02/1995US5412735 Adaptive noise reduction circuit for a sound reproduction system
05/02/1995US5412434 Luminance and chrominance signals separating filter adaptive to movement of image
04/1995
04/27/1995DE4292034C2 Method for optimising a refresh coefficient for an adaptive filter
04/26/1995EP0650281A1 Adaptive precoding and preemphasis for trellis coded modulation systems
04/26/1995EP0650127A2 Digital signal processing circuit
04/26/1995EP0649589A1 Adaptive audio systems and sound reproduction systems
04/26/1995EP0649558A1 Transmission system comprising at least a coder
04/26/1995EP0649557A1 Transmission system comprising at least a coder
04/23/1995CA2130538A1 Method and apparatus for adaptively providing precoding and preemphasis conditioning to signal data for transfer over a communication channel
04/19/1995EP0649235A1 Method and apparatus for channel equalization
04/19/1995EP0648385A1 Signal processing
04/18/1995US5408532 Vehicle internal noise reduction system
04/18/1995US5408424 Optimal filtering by recurrent neural networks
04/13/1995DE4334040A1 Circuit arrangement for the automatic correction of the transfer characteristics of electrodynamic sound transmitters without additional mechanical or acoustic sensor
04/04/1995US5404322 Digital filter and method of design
03/1995
03/30/1995WO1995008890A1 Interference suppression in cdma systems
03/30/1995DE4332804A1 Adaptive correction circuit for electroacoustic sound transmitters
03/28/1995US5402520 Neural network method and apparatus for retrieving signals embedded in noise and analyzing the retrieved signals
03/28/1995US5402496 Auditory prosthesis, noise suppression apparatus and feedback suppression apparatus having focused adaptive filtering
03/21/1995US5400409 Noise-reduction method for noise-affected voice channels
03/15/1995EP0643495A1 Modem with optimum gain echo canceller adaptation
03/09/1995WO1995006986A1 Fast converging adaptive filter
03/09/1995DE4431349A1 Adaptive filtering of digital image signals
03/08/1995EP0642032A2 Sound source determining system
03/07/1995US5396554 Multi-channel echo canceling method and apparatus
03/07/1995US5396519 Method and apparatus for adaptively providing precoding and preemphasis conditioning to signal data for transfer over a communication channel
03/01/1995EP0641110A1 Combined equaliser and demultiplexer
02/1995
02/28/1995US5394193 Pattern-adaptive digital comb filter for separation of a luminance and a color signal
02/28/1995US5394110 Demodulation system having adaptive matched filter and decision feedback equalizer
02/22/1995EP0639892A1 Digital filter device
02/16/1995WO1995005047A1 An audio processing system for teleconferencing
02/14/1995US5390364 Least-mean squares adaptive digital filter havings variable size loop bandwidth
02/14/1995US5390133 Image processor for target detection and tracking
02/14/1995CA2046250C Hybrid circuit having a two-wire/four-wire converting function
02/14/1995CA2033677C Active acoustic attenuation system with reduced convergence time
02/07/1995US5388123 Data receiving system
02/07/1995US5388080 Non-integer sample delay active noise canceller
02/07/1995CA1334284C Signal processing means for sensing a periodic signal in the presence of another interfering periodic noise
02/01/1995EP0636291A1 Coordinated coding for digital transmission
01/1995
01/31/1995US5386477 Active acoustic control system matching model reference
01/31/1995US5386472 Active noise control system
01/25/1995EP0635178A1 A method for avoiding self-oscillation in conjunction with echo cancellation
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