IL84948D0 - Noise reduction system - Google Patents

Noise reduction system

Info

Publication number
IL84948D0
IL84948D0 IL8494887A IL8494887A IL84948D0 IL 84948 D0 IL84948 D0 IL 84948D0 IL 8494887 A IL8494887 A IL 8494887A IL 8494887 A IL8494887 A IL 8494887A IL 84948 D0 IL84948 D0 IL 84948D0
Authority
IL
Israel
Prior art keywords
noise reduction
reduction system
system
noise
Prior art date
Application number
IL8494887A
Original Assignee
D S P Group Israel Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by D S P Group Israel Ltd filed Critical D S P Group Israel Ltd
Priority to IL8494887A priority Critical patent/IL84948D0/en
Publication of IL84948D0 publication Critical patent/IL84948D0/en

Links

IL8494887A 1987-12-25 1987-12-25 Noise reduction system IL84948D0 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IL8494887A IL84948D0 (en) 1987-12-25 1987-12-25 Noise reduction system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL8494887A IL84948D0 (en) 1987-12-25 1987-12-25 Noise reduction system
US07/463,950 US5012519A (en) 1987-12-25 1990-01-05 Noise reduction system

Publications (1)

Publication Number Publication Date
IL84948D0 true IL84948D0 (en) 1988-06-30

Family

ID=11058423

Family Applications (1)

Application Number Title Priority Date Filing Date
IL8494887A IL84948D0 (en) 1987-12-25 1987-12-25 Noise reduction system

Country Status (2)

Country Link
US (1) US5012519A (en)
IL (1) IL84948D0 (en)

Families Citing this family (154)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU633673B2 (en) * 1990-01-18 1993-02-04 Matsushita Electric Industrial Co., Ltd. Signal processing device
JPH04182700A (en) * 1990-11-19 1992-06-30 Nec Corp Voice recognizer
US5146504A (en) * 1990-12-07 1992-09-08 Motorola, Inc. Speech selective automatic gain control
JPH05188994A (en) * 1992-01-07 1993-07-30 Sony Corp Noise suppression device
FI90477C (en) * 1992-03-23 1994-02-10 Nokia Mobile Phones Ltd the quality of the speech signal enhancement method that uses linear prediction encoding system
US5430826A (en) * 1992-10-13 1995-07-04 Harris Corporation Voice-activated switch
GB2272615A (en) * 1992-11-17 1994-05-18 Rudolf Bisping Controlling signal-to-noise ratio in noisy recordings
US5432859A (en) * 1993-02-23 1995-07-11 Novatel Communications Ltd. Noise-reduction system
US5710862A (en) * 1993-06-30 1998-01-20 Motorola, Inc. Method and apparatus for reducing an undesirable characteristic of a spectral estimate of a noise signal between occurrences of voice signals
DE69428119D1 (en) * 1993-07-07 2001-10-04 Picturetel Corp Reduction of the background noise for speech enhancement
DE4330243A1 (en) * 1993-09-07 1995-03-09 Philips Patentverwaltung Speech processing device
IT1272653B (en) * 1993-09-20 1997-06-26 Alcatel Italia Method of noise reduction, in particular for automatic speech recognition, and act to implement the same filter
JPH07193548A (en) * 1993-12-25 1995-07-28 Sony Corp Noise reduction processing method
US5721694A (en) * 1994-05-10 1998-02-24 Aura System, Inc. Non-linear deterministic stochastic filtering method and system
FR2722631B1 (en) * 1994-07-13 1996-09-20 France Telecom Etablissement P Method and system for adaptive filtering of blind equalization of a digital telephone signal and their applications
GB9419388D0 (en) * 1994-09-26 1994-11-09 Canon Kk Speech analysis
US5774846A (en) * 1994-12-19 1998-06-30 Matsushita Electric Industrial Co., Ltd. Speech coding apparatus, linear prediction coefficient analyzing apparatus and noise reducing apparatus
US5768473A (en) * 1995-01-30 1998-06-16 Noise Cancellation Technologies, Inc. Adaptive speech filter
JP3453898B2 (en) * 1995-02-17 2003-10-06 ソニー株式会社 Noise reduction method and device of the speech signal
JP3484801B2 (en) * 1995-02-17 2004-01-06 ソニー株式会社 Noise reduction method and device of the speech signal
US6001131A (en) * 1995-02-24 1999-12-14 Nynex Science & Technology, Inc. Automatic target noise cancellation for speech enhancement
US6263307B1 (en) * 1995-04-19 2001-07-17 Texas Instruments Incorporated Adaptive weiner filtering using line spectral frequencies
US5878389A (en) * 1995-06-28 1999-03-02 Oregon Graduate Institute Of Science & Technology Method and system for generating an estimated clean speech signal from a noisy speech signal
JP3591068B2 (en) * 1995-06-30 2004-11-17 ソニー株式会社 Noise reduction method of speech signal
DE19524847C1 (en) * 1995-07-07 1997-02-13 Siemens Ag Device for improving disturbed speech signals
US5844994A (en) * 1995-08-28 1998-12-01 Intel Corporation Automatic microphone calibration for video teleconferencing
JP2882463B2 (en) * 1995-11-01 1999-04-12 日本電気株式会社 Vox determination device
FI100840B (en) 1995-12-12 1998-02-27 Nokia Mobile Phones Ltd The noise suppressor and method for suppressing the background noise of the speech kohinaises and the mobile station
US5708722A (en) * 1996-01-16 1998-01-13 Lucent Technologies Inc. Microphone expansion for background noise reduction
GB2312360B (en) * 1996-04-12 2001-01-24 Olympus Optical Co Voice signal coding apparatus
US5768392A (en) * 1996-04-16 1998-06-16 Aura Systems Inc. Blind adaptive filtering of unknown signals in unknown noise in quasi-closed loop system
JPH09326844A (en) * 1996-06-03 1997-12-16 Mitsubishi Electric Corp Noise reduction speech device and noise reduction speech method
US5742694A (en) * 1996-07-12 1998-04-21 Eatwell; Graham P. Noise reduction filter
US5963899A (en) * 1996-08-07 1999-10-05 U S West, Inc. Method and system for region based filtering of speech
US6098038A (en) * 1996-09-27 2000-08-01 Oregon Graduate Institute Of Science & Technology Method and system for adaptive speech enhancement using frequency specific signal-to-noise ratio estimates
CN1223994C (en) * 1996-11-07 2005-10-19 松下电器产业株式会社 Sound source vector generator, voice encoder, and voice decoder
US5937377A (en) * 1997-02-19 1999-08-10 Sony Corporation Method and apparatus for utilizing noise reducer to implement voice gain control and equalization
US6167375A (en) * 1997-03-17 2000-12-26 Kabushiki Kaisha Toshiba Method for encoding and decoding a speech signal including background noise
FR2764469B1 (en) * 1997-06-09 2002-07-12 France Telecom Method and processing device optimizes a disturbing signal during a sound capture
ES2190578T3 (en) * 1997-06-23 2003-08-01 Liechti Ag Method for recording compression ambient noise method for the detection of elements of the same program, device and computer program for application.
US5970441A (en) * 1997-08-25 1999-10-19 Telefonaktiebolaget Lm Ericsson Detection of periodicity information from an audio signal
SE515674C2 (en) * 1997-12-05 2001-09-24 Ericsson Telefon Ab L M Apparatus and method for noise reduction
EP1041539A4 (en) * 1997-12-08 2001-09-19 Mitsubishi Electric Corp Sound signal processing method and sound signal processing device
US6233554B1 (en) * 1997-12-12 2001-05-15 Qualcomm Incorporated Audio CODEC with AGC controlled by a VOCODER
US6175602B1 (en) * 1998-05-27 2001-01-16 Telefonaktiebolaget Lm Ericsson (Publ) Signal noise reduction by spectral subtraction using linear convolution and casual filtering
US6459914B1 (en) * 1998-05-27 2002-10-01 Telefonaktiebolaget Lm Ericsson (Publ) Signal noise reduction by spectral subtraction using spectrum dependent exponential gain function averaging
US6088668A (en) 1998-06-22 2000-07-11 D.S.P.C. Technologies Ltd. Noise suppressor having weighted gain smoothing
US6351731B1 (en) 1998-08-21 2002-02-26 Polycom, Inc. Adaptive filter featuring spectral gain smoothing and variable noise multiplier for noise reduction, and method therefor
US6453285B1 (en) 1998-08-21 2002-09-17 Polycom, Inc. Speech activity detector for use in noise reduction system, and methods therefor
JP4308345B2 (en) * 1998-08-21 2009-08-05 パナソニック株式会社 Multi-mode speech encoding apparatus and decoding apparatus
US6411927B1 (en) * 1998-09-04 2002-06-25 Matsushita Electric Corporation Of America Robust preprocessing signal equalization system and method for normalizing to a target environment
US6275798B1 (en) * 1998-09-16 2001-08-14 Telefonaktiebolaget L M Ericsson Speech coding with improved background noise reproduction
US6108610A (en) * 1998-10-13 2000-08-22 Noise Cancellation Technologies, Inc. Method and system for updating noise estimates during pauses in an information signal
US6993480B1 (en) 1998-11-03 2006-01-31 Srs Labs, Inc. Voice intelligibility enhancement system
US6718301B1 (en) 1998-11-11 2004-04-06 Starkey Laboratories, Inc. System for measuring speech content in sound
EP1729287A1 (en) 1999-01-07 2006-12-06 Tellabs Operations, Inc. Method and apparatus for adaptively suppressing noise
AU2408500A (en) 1999-01-07 2000-07-24 Tellabs Operations, Inc. Method and apparatus for adaptively suppressing noise
US7177805B1 (en) * 1999-02-01 2007-02-13 Texas Instruments Incorporated Simplified noise suppression circuit
KR100752529B1 (en) * 1999-02-09 2007-08-29 에이티 앤드 티 코포레이션 Speech enhancement with gain limitations based on speech activity
US6604071B1 (en) 1999-02-09 2003-08-05 At&T Corp. Speech enhancement with gain limitations based on speech activity
US6327564B1 (en) * 1999-03-05 2001-12-04 Matsushita Electric Corporation Of America Speech detection using stochastic confidence measures on the frequency spectrum
US6556967B1 (en) * 1999-03-12 2003-04-29 The United States Of America As Represented By The National Security Agency Voice activity detector
SE521465C2 (en) * 1999-06-07 2003-11-04 Ericsson Telefon Ab L M Mobile telephone with voice recognition system comprising a calculation unit for spectral distance.
US6349278B1 (en) * 1999-08-04 2002-02-19 Ericsson Inc. Soft decision signal estimation
KR100304666B1 (en) * 1999-08-28 2001-11-01 윤종용 Speech enhancement method
EP1081685A3 (en) * 1999-09-01 2002-04-24 TRW Inc. System and method for noise reduction using a single microphone
DE19957220A1 (en) * 1999-11-27 2001-06-21 Alcatel Sa At the current noise level adapted noise cancellation
US6473733B1 (en) * 1999-12-01 2002-10-29 Research In Motion Limited Signal enhancement for voice coding
CN1187735C (en) * 2000-01-11 2005-02-02 松下电器产业株式会社 Multi-mode voice encoding device and decoding device
US7089181B2 (en) * 2001-05-30 2006-08-08 Intel Corporation Enhancing the intelligibility of received speech in a noisy environment
US7020605B2 (en) * 2000-09-15 2006-03-28 Mindspeed Technologies, Inc. Speech coding system with time-domain noise attenuation
AU9498901A (en) * 2000-10-04 2002-04-15 Clarity L L C Speech detection
US7003455B1 (en) * 2000-10-16 2006-02-21 Microsoft Corporation Method of noise reduction using correction and scaling vectors with partitioning of the acoustic space in the domain of noisy speech
JP4282227B2 (en) * 2000-12-28 2009-06-17 日本電気株式会社 Noise removal method and apparatus
FR2823385B1 (en) * 2001-04-10 2003-05-30 Thomson Csf Analog conditioning device of a voice signal in a digital processing chain of speech in a noisy environment
US7092877B2 (en) * 2001-07-31 2006-08-15 Turk & Turk Electric Gmbh Method for suppressing noise as well as a method for recognizing voice signals
DE10150519B4 (en) * 2001-10-12 2014-01-09 Hewlett-Packard Development Co., L.P. Method and arrangement for speech processing
US7346510B2 (en) * 2002-03-19 2008-03-18 Microsoft Corporation Method of speech recognition using variables representing dynamic aspects of speech
US20030187637A1 (en) * 2002-03-29 2003-10-02 At&T Automatic feature compensation based on decomposition of speech and noise
US7139703B2 (en) * 2002-04-05 2006-11-21 Microsoft Corporation Method of iterative noise estimation in a recursive framework
US7117148B2 (en) 2002-04-05 2006-10-03 Microsoft Corporation Method of noise reduction using correction vectors based on dynamic aspects of speech and noise normalization
RU2206960C1 (en) * 2002-06-24 2003-06-20 Общество с ограниченной ответственностью "Центр речевых технологий" Method and device for data signal noise suppression
JP2005534257A (en) * 2002-07-26 2005-11-10 モトローラ・インコーポレイテッドMotorola Incorporated Method for high-speed dynamic estimate of the background noise
US7146315B2 (en) * 2002-08-30 2006-12-05 Siemens Corporate Research, Inc. Multichannel voice detection in adverse environments
US7047047B2 (en) 2002-09-06 2006-05-16 Microsoft Corporation Non-linear observation model for removing noise from corrupted signals
US7146316B2 (en) * 2002-10-17 2006-12-05 Clarity Technologies, Inc. Noise reduction in subbanded speech signals
US7343283B2 (en) * 2002-10-23 2008-03-11 Motorola, Inc. Method and apparatus for coding a noise-suppressed audio signal
JP4336759B2 (en) * 2002-12-17 2009-09-30 日本電気株式会社 Light dispersion filter
US7725315B2 (en) * 2003-02-21 2010-05-25 Qnx Software Systems (Wavemakers), Inc. Minimization of transient noises in a voice signal
US7885420B2 (en) * 2003-02-21 2011-02-08 Qnx Software Systems Co. Wind noise suppression system
US8326621B2 (en) 2003-02-21 2012-12-04 Qnx Software Systems Limited Repetitive transient noise removal
US8271279B2 (en) 2003-02-21 2012-09-18 Qnx Software Systems Limited Signature noise removal
US7895036B2 (en) * 2003-02-21 2011-02-22 Qnx Software Systems Co. System for suppressing wind noise
US8073689B2 (en) * 2003-02-21 2011-12-06 Qnx Software Systems Co. Repetitive transient noise removal
US7949522B2 (en) * 2003-02-21 2011-05-24 Qnx Software Systems Co. System for suppressing rain noise
US7593851B2 (en) * 2003-03-21 2009-09-22 Intel Corporation Precision piecewise polynomial approximation for Ephraim-Malah filter
US7165026B2 (en) * 2003-03-31 2007-01-16 Microsoft Corporation Method of noise estimation using incremental bayes learning
US7526428B2 (en) 2003-10-06 2009-04-28 Harris Corporation System and method for noise cancellation with noise ramp tracking
US20050091049A1 (en) * 2003-10-28 2005-04-28 Rongzhen Yang Method and apparatus for reduction of musical noise during speech enhancement
EP1683134B1 (en) * 2003-11-12 2010-06-23 Telecom Italia S.p.A. Method and circuit for noise estimation, related filter, terminal and communication network using same, and computer program product therefor
US7492889B2 (en) * 2004-04-23 2009-02-17 Acoustic Technologies, Inc. Noise suppression based on bark band wiener filtering and modified doblinger noise estimate
CA2566751C (en) * 2004-05-14 2013-07-16 Loquendo S.P.A. Noise reduction for automatic speech recognition
US7454332B2 (en) * 2004-06-15 2008-11-18 Microsoft Corporation Gain constrained noise suppression
KR100677126B1 (en) * 2004-07-27 2007-02-02 삼성전자주식회사 Apparatus and method for eliminating noise
US7383179B2 (en) * 2004-09-28 2008-06-03 Clarity Technologies, Inc. Method of cascading noise reduction algorithms to avoid speech distortion
EP1806739B1 (en) * 2004-10-28 2012-08-15 Fujitsu Ltd. Noise suppressor
WO2006116132A2 (en) * 2005-04-21 2006-11-02 Srs Labs, Inc. Systems and methods for reducing audio noise
JP4670483B2 (en) * 2005-05-31 2011-04-13 日本電気株式会社 Method and apparatus for noise suppression
JP4172530B2 (en) * 2005-09-02 2008-10-29 日本電気株式会社 Noise suppression method and apparatus, and computer program
US7664635B2 (en) * 2005-09-08 2010-02-16 Gables Engineering, Inc. Adaptive voice detection method and system
US7813923B2 (en) * 2005-10-14 2010-10-12 Microsoft Corporation Calibration based beamforming, non-linear adaptive filtering, and multi-sensor headset
US7565288B2 (en) * 2005-12-22 2009-07-21 Microsoft Corporation Spatial noise suppression for a microphone array
JP4863713B2 (en) * 2005-12-29 2012-01-25 富士通株式会社 Noise suppression device, noise suppression method, and computer program
KR20070078171A (en) * 2006-01-26 2007-07-31 삼성전자주식회사 Apparatus and method for noise reduction using snr-dependent suppression rate control
US8335685B2 (en) 2006-12-22 2012-12-18 Qnx Software Systems Limited Ambient noise compensation system robust to high excitation noise
US7844453B2 (en) * 2006-05-12 2010-11-30 Qnx Software Systems Co. Robust noise estimation
JP4827661B2 (en) * 2006-08-30 2011-11-30 富士通株式会社 Signal processing method and apparatus
US7881216B2 (en) * 2006-09-29 2011-02-01 Verint Systems Inc. Systems and methods for analyzing communication sessions using fragments
US8050434B1 (en) 2006-12-21 2011-11-01 Srs Labs, Inc. Multi-channel audio enhancement system
US20080162119A1 (en) * 2007-01-03 2008-07-03 Lenhardt Martin L Discourse Non-Speech Sound Identification and Elimination
US8352257B2 (en) * 2007-01-04 2013-01-08 Qnx Software Systems Limited Spectro-temporal varying approach for speech enhancement
DE102007006847A1 (en) * 2007-02-12 2008-08-14 Voice Trust Ag Digital method and arrangement for authentication of a user of a telecommunications or data network
US8121835B2 (en) * 2007-03-21 2012-02-21 Texas Instruments Incorporated Automatic level control of speech signals
US7885810B1 (en) * 2007-05-10 2011-02-08 Mediatek Inc. Acoustic signal enhancement method and apparatus
US9392360B2 (en) 2007-12-11 2016-07-12 Andrea Electronics Corporation Steerable sensor array system with video input
US8818000B2 (en) 2008-04-25 2014-08-26 Andrea Electronics Corporation System, device, and method utilizing an integrated stereo array microphone
US8326620B2 (en) 2008-04-30 2012-12-04 Qnx Software Systems Limited Robust downlink speech and noise detector
WO2009145192A1 (en) * 2008-05-28 2009-12-03 日本電気株式会社 Voice detection device, voice detection method, voice detection program, and recording medium
US20100082339A1 (en) * 2008-09-30 2010-04-01 Alon Konchitsky Wind Noise Reduction
US8914282B2 (en) * 2008-09-30 2014-12-16 Alon Konchitsky Wind noise reduction
JP5609157B2 (en) * 2010-02-26 2014-10-22 ヤマハ株式会社 Coefficient setting device and noise suppression device
US8737654B2 (en) 2010-04-12 2014-05-27 Starkey Laboratories, Inc. Methods and apparatus for improved noise reduction for hearing assistance devices
US8606571B1 (en) * 2010-04-19 2013-12-10 Audience, Inc. Spatial selectivity noise reduction tradeoff for multi-microphone systems
US8473287B2 (en) 2010-04-19 2013-06-25 Audience, Inc. Method for jointly optimizing noise reduction and voice quality in a mono or multi-microphone system
US8781137B1 (en) 2010-04-27 2014-07-15 Audience, Inc. Wind noise detection and suppression
US8538035B2 (en) 2010-04-29 2013-09-17 Audience, Inc. Multi-microphone robust noise suppression
US8447596B2 (en) 2010-07-12 2013-05-21 Audience, Inc. Monaural noise suppression based on computational auditory scene analysis
JP2012058358A (en) * 2010-09-07 2012-03-22 Sony Corp Noise suppression apparatus, noise suppression method and program
US9418675B2 (en) * 2010-10-04 2016-08-16 LI Creative Technologies, Inc. Wearable communication system with noise cancellation
US8744091B2 (en) * 2010-11-12 2014-06-03 Apple Inc. Intelligibility control using ambient noise detection
US8787571B2 (en) * 2011-10-19 2014-07-22 General Electric Company Wired communications systems with improved capacity and security
JP2013148724A (en) * 2012-01-19 2013-08-01 Sony Corp Noise suppressing device, noise suppressing method, and program
CN110164437A (en) * 2012-03-02 2019-08-23 腾讯科技(深圳)有限公司 A kind of audio recognition method and terminal of instant messaging
US9280984B2 (en) 2012-05-14 2016-03-08 Htc Corporation Noise cancellation method
EP2760022B1 (en) * 2013-01-29 2017-11-01 2236008 Ontario Inc. Audio bandwidth dependent noise suppression
US9349383B2 (en) 2013-01-29 2016-05-24 2236008 Ontario Inc. Audio bandwidth dependent noise suppression
US9520141B2 (en) * 2013-02-28 2016-12-13 Google Inc. Keyboard typing detection and suppression
US9769550B2 (en) 2013-11-06 2017-09-19 Nvidia Corporation Efficient digital microphone receiver process and system
US9454975B2 (en) * 2013-11-07 2016-09-27 Nvidia Corporation Voice trigger
CN103646648B (en) * 2013-11-19 2016-03-23 清华大学 A kind of noise power estimation method
US9437212B1 (en) * 2013-12-16 2016-09-06 Marvell International Ltd. Systems and methods for suppressing noise in an audio signal for subbands in a frequency domain based on a closed-form solution
WO2016112113A1 (en) 2015-01-07 2016-07-14 Knowles Electronics, Llc Utilizing digital microphones for low power keyword detection and noise suppression
US9576589B2 (en) * 2015-02-06 2017-02-21 Knuedge, Inc. Harmonic feature processing for reducing noise
WO2017218386A1 (en) * 2016-06-13 2017-12-21 Med-El Elektromedizinische Geraete Gmbh Recursive noise power estimation with noise model adaptation

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT251656B (en) * 1965-03-25 1967-01-10 Ibm Oesterreich Internationale Methods and arrangements for improving the voice quality in vocoder systems
US3403224A (en) * 1965-05-28 1968-09-24 Bell Telephone Labor Inc Processing of communications signals to reduce effects of noise
US3743787A (en) * 1969-09-02 1973-07-03 H Fujisaki Speech signal transmission systems utilizing a non-linear circuit in the base band channel
US3878337A (en) * 1970-03-13 1975-04-15 Communications Satellite Corp Device for speech detection independent of amplitude
US3855423A (en) * 1973-05-03 1974-12-17 Bell Telephone Labor Inc Noise spectrum equalizer
US3989897A (en) * 1974-10-25 1976-11-02 Carver R W Method and apparatus for reducing noise content in audio signals
US4000369A (en) * 1974-12-05 1976-12-28 Rockwell International Corporation Analog signal channel equalization with signal-in-noise embodiment
US4048443A (en) * 1975-12-12 1977-09-13 Bell Telephone Laboratories, Incorporated Digital speech communication system for minimizing quantizing noise
JPS53105303A (en) * 1977-02-25 1978-09-13 Hitachi Ltd Preprocessing system for audio recognition
US4133976A (en) * 1978-04-07 1979-01-09 Bell Telephone Laboratories, Incorporated Predictive speech signal coding with reduced noise effects
JPS5850360B2 (en) * 1978-05-12 1983-11-10 Hitachi Ltd
FR2437744B1 (en) * 1978-09-29 1981-08-14 Thomson Csf
US4227049A (en) * 1978-11-27 1980-10-07 Thomson Ian W Audio system for isolating sounds from individual components of drum set-up for selectively mixing
JPS56147525A (en) * 1980-04-18 1981-11-16 Hitachi Ltd Reception playback system
US4573188A (en) * 1982-06-10 1986-02-25 The Aerospace Corporation Digital to analog converter
US4538295A (en) * 1982-08-16 1985-08-27 Nissan Motor Company, Limited Speech recognition system for an automotive vehicle
US4630304A (en) * 1985-07-01 1986-12-16 Motorola, Inc. Automatic background noise estimator for a noise suppression system
US4628529A (en) * 1985-07-01 1986-12-09 Motorola, Inc. Noise suppression system

Also Published As

Publication number Publication date
US5012519A (en) 1991-04-30

Similar Documents

Publication Publication Date Title
GB2212035B (en) Noise suppression apparatus
GB2197402B (en) Brake system
GB2193771B (en) Skid-controlled brake system
GB2211522B (en) Floor system
GB2220330B (en) Noise reduction
JPS63176338A (en) Microbubble
GB8904719D0 (en) Electronic noise attentuation system
GB8820352D0 (en) Development system
JPS63304848A (en) Structure connecting system
EP0295644A3 (en) Speaker system
EP0294647A3 (en) Thiadiazinones
HK11892A (en) Bedding system
EP0303867A3 (en) Edgedrain
EP0287794A3 (en) Dosage-syringe
HK19297A (en) Noise supression system
GB2232724B (en) Noise reduction method
GB9116433D0 (en) Noise reduction system
GB8710945D0 (en) Auto-decompression system
EP0288268A3 (en) 4-demethoxy-4-amino-anthracyclines
JPS62292556A (en) Brake system
GB8819032D0 (en) Independent wheel-suspension system
GB9003938D0 (en) Noise reducing system
GB2191910B (en) Speaker system
EP0410663A3 (en) Am noise reducing
GB8712987D0 (en) Braking system