Patents for H03H 21 - Adaptive networks (3,855)
08/1999
08/11/1999EP0935371A2 Multiported register file for updating the coefficients of a burst mode FIR filter
08/10/1999US5937009 Sub-band echo canceller using optimum wavelet packets and cross-band cancellation
08/05/1999WO1999039497A1 Generating calibration signals for an adaptive beamformer
08/04/1999EP0659312A4 Decision feedback equalizer method and apparatus.
08/03/1999US5933797 Adaptive dual filter echo cancellation
08/03/1999CA2089154C Automatic frequency control by an adaptive filter
07/1999
07/29/1999WO1999038155A1 A decoding method and system comprising an adaptive postfilter
07/29/1999WO1999038029A1 Surveillance device for signal-echo sensors
07/29/1999DE19802724A1 Cross-correlating vehicular ultrasound radar-ranging system providing collision warning
07/28/1999EP0792546B1 Distortion corrector for two data flows and corresponding method
07/27/1999US5928312 Digital filter processing device
07/21/1999EP0930726A2 Method for echo cancelling with adaptive FIR filters
07/16/1999CA2257550A1 Process for echo suppression with adaptive fir filters
07/13/1999US5923708 Decoding circuit for a read signal from a magnetic recording and reading system using partial response
07/13/1999CA2157418C Beamformer using coefficient restrained adaptive filters for detecting interference signals
07/08/1999DE19900344A1 Adaptive nonlinearity equalizing device e.g. for hard disc data
07/07/1999EP0928065A2 Multiported register file for coefficient use in filters
07/07/1999EP0927459A2 A blind equalization having reduced complexity
07/06/1999US5920599 Soft decision decoder
07/06/1999US5920595 Inter-cross wave compensation method and apparatus performing frequency conversion on signed not detected by a demodulating unit
06/1999
06/29/1999US5917862 Information reproducing apparatus and its automatic equalization maximum likelihood detecting method
06/29/1999US5917855 Method and apparatus for detecting an original signal from a data storage device
06/23/1999CA2254545A1 Multiported register file for coefficient use in filters
06/23/1999CA2254543A1 Multiported register file for burst mode coefficient updating
06/22/1999US5914983 Digital signal error reduction apparatus
06/15/1999US5912966 Enhanced echo canceller for digital cellular application
06/15/1999US5912828 Equalizer filter configuration for processing real-valued and complex-valued signal samples
06/15/1999US5912821 Vibration/noise control system including adaptive digital filters for simulating dynamic characteristics of a vibration/noise source having a rotating member
06/10/1999WO1999029094A1 Method and apparatus for cancelling echo originating from a mobile terminal
06/09/1999EP0824798B1 Adaptive sub-band filtering
06/08/1999US5910995 DSP decoder for decoding analog SR encoded audio signals
06/01/1999US5909675 Device for recognizing information conveyed by a received signal
06/01/1999US5909384 System for dynamically adapting the length of a filter
06/01/1999US5908476 Photopolymerization
05/1999
05/27/1999WO1999026402A1 Echo canceller employing dual-h architecture having improved double-talk detection
05/27/1999WO1999026401A1 Echo canceller employing dual-h architecture having improved non-linear echo path detection
05/27/1999WO1999026400A1 Echo canceller employing dual-h architecture having improved coefficient transfer
05/27/1999WO1999026399A1 Echo canceller employing dual-h architecture having split adaptive gain settings
05/27/1999WO1999026355A1 Acoustic echo cancellation equipped with howling suppressor and double-talk detector
05/27/1999CA2307678A1 Echo canceller employing dual-h architecture having split adaptive gain settings
05/25/1999US5907623 Audio noise reduction system implemented through digital signal processing
05/25/1999US5907497 Update block for an adaptive equalizer filter configuration
05/25/1999CA2084034C Adaptive receiver apparatus
05/20/1999WO1999016170A3 Device for separation of signals
05/19/1999EP0649589B1 Adaptive audio systems and sound reproduction systems
05/18/1999US5905717 Echo canceller for a packet signal
05/18/1999US5905659 Training a recursive filter by use of derivative function
05/06/1999EP0913951A2 Method for suppressing narrow-band, fixed-frequency interference in an audio signal
05/06/1999EP0635178B1 A method for avoiding self-oscillation in conjunction with echo cancellation
05/04/1999US5901175 Dynamically adaptive equalizer system and method
05/04/1999US5901075 In a digital adaptive finite impulse response filter
05/04/1999CA2168341C An audio processing system for point-to-point and multipoint teleconferencing
04/1999
04/28/1999EP0911967A2 Apparatus and method for equilizer filter units
04/28/1999CN1215540A Acoustic feedback correction
04/27/1999US5898731 Auto-coefficient renewal digital channel equalizer
04/27/1999CA2086980C Adaptive equalizer and receiver
04/21/1999EP0910166A2 Adaptive filter
04/20/1999US5895479 Prediction filter
04/15/1999WO1999018666A1 Signal processor with local signal behavior
04/15/1999CA2305381A1 Signal processor with local signal behavior
04/14/1999EP0909065A2 Apparatus and method for a reduced component equalizer circuit
04/14/1999EP0909029A2 Filter coefficients adaptation method and adaptive digital filter device
04/14/1999EP0908018A2 System and method for adaptive interference cancelling
04/13/1999US5894495 Adaptive digital filter
04/07/1999EP0907259A2 CDMA receiving method and receiver
04/06/1999US5892836 Digital hearing aid
04/01/1999WO1999016170A2 Device for separation of signals
03/1999
03/31/1999EP0904640A1 Process for separating a received mixture of signals
03/31/1999CN1212555A Direction transform echo canceller and method
03/18/1999WO1998059418A3 A blind equalization having reduced complexity
03/16/1999CA2061930C Adaptive matched pre-filtering of a decision feedback equalized input
03/10/1999CN1210608A Noisy speech parameter enhancement method and apparatus
03/04/1999WO1999010715A1 Signal processing system for sensing a periodic signal in noise
03/04/1999CA2297891A1 Signal processing system
02/1999
02/24/1999EP0898364A2 Compensating filters
02/24/1999EP0898266A2 A method and an arrangement for attenuating noise in a space by generating antinoise
02/24/1999EP0897574A1 A noisy speech parameter enhancement method and apparatus
02/24/1999CN1209230A Channel training of multi-channel receiver system
02/24/1999CN1209227A Gauging convergence of adaptive filters
02/24/1999CN1209226A Resolution enhancement of fixed point digital filiter
02/24/1999CN1209224A Impulse noise effect reduction
02/24/1999CN1208994A Flow line type parallel-to-serial frame minimum mean square self-adaption filter and method for mfg. same
02/23/1999US5875215 For use in a receiver
02/23/1999CA2169961C Interference suppression in cdma systems
02/23/1999CA2074277C Adaptative equalization method reducing intersymbol interference and related receiver device and application
02/16/1999US5872666 Decoder circuitry with PRML signal processing for reproducing apparatus
02/11/1999WO1999007071A1 Adaptive filter system having mixed fixed point or floating point and block scale floating point operators
02/11/1999DE19834695A1 Adaptive equalisation method for data transmission system
02/10/1999EP0896481A1 Adaptive filter
02/10/1999EP0896428A2 Method for adaptation of FIR filters
02/09/1999US5870372 Adaptive equalizer of recorded information reproducing apparatus
02/09/1999US5868806 Abrasive tape and method of producing the same
02/03/1999EP0895384A2 Sequence estimation method and sequence estimator
02/03/1999CN1041985C Method and device for estimating transmitted signals in a receiver in digital signal transmission operation
02/02/1999US5867531 Maximum likelihood sequence estimator and maximum likelihood sequence estimating method
02/02/1999US5867486 Method and an apparatus for unknown system identification
02/02/1999CA2086358C Tap-weight controller for adaptive matched filter receiver
01/1999
01/27/1999CN1206528A Transmission of digital information signal having specific first sampling frequency
01/20/1999EP0809842A4 Adaptive speech filter
01/19/1999CA2153376C Maximum-likelihood sequence estimator with variable number of states
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