CA2021676A1 - Systeme de communication a elimination active du bruit - Google Patents
Systeme de communication a elimination active du bruitInfo
- Publication number
- CA2021676A1 CA2021676A1 CA2021676A CA2021676A CA2021676A1 CA 2021676 A1 CA2021676 A1 CA 2021676A1 CA 2021676 A CA2021676 A CA 2021676A CA 2021676 A CA2021676 A CA 2021676A CA 2021676 A1 CA2021676 A1 CA 2021676A1
- Authority
- CA
- Canada
- Prior art keywords
- communication system
- noise cancellation
- active noise
- noise
- undesired
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/385—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils
- G01R33/3854—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils means for active and/or passive vibration damping or acoustical noise suppression in gradient magnet coil systems
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1785—Methods, e.g. algorithms; Devices
- G10K11/17853—Methods, e.g. algorithms; Devices of the filter
- G10K11/17854—Methods, e.g. algorithms; Devices of the filter the filter being an adaptive filter
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1785—Methods, e.g. algorithms; Devices
- G10K11/17857—Geometric disposition, e.g. placement of microphones
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1787—General system configurations
- G10K11/17879—General system configurations using both a reference signal and an error signal
- G10K11/17881—General system configurations using both a reference signal and an error signal the reference signal being an acoustic signal, e.g. recorded with a microphone
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1787—General system configurations
- G10K11/17885—General system configurations additionally using a desired external signal, e.g. pass-through audio such as music or speech
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
- G10K2210/1082—Microphones, e.g. systems using "virtual" microphones
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/116—Medical; Dental
- G10K2210/1161—NMR or MRI
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/128—Vehicles
- G10K2210/1282—Automobiles
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/301—Computational
- G10K2210/3012—Algorithms
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/301—Computational
- G10K2210/3046—Multiple acoustic inputs, multiple acoustic outputs
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/321—Physical
- G10K2210/3224—Passive absorbers
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/50—Miscellaneous
- G10K2210/511—Narrow band, e.g. implementations for single frequency cancellation
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/50—Miscellaneous
- G10K2210/512—Wide band, e.g. non-recurring signals
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Audiology, Speech & Language Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Noise Elimination (AREA)
- Filters That Use Time-Delay Elements (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Circuit For Audible Band Transducer (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US388,014 | 1989-07-31 | ||
US07/388,014 US5033082A (en) | 1989-07-31 | 1989-07-31 | Communication system with active noise cancellation |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2021676A1 true CA2021676A1 (fr) | 1991-02-01 |
CA2021676C CA2021676C (fr) | 1994-07-26 |
Family
ID=23532269
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002021676A Expired - Fee Related CA2021676C (fr) | 1989-07-31 | 1990-07-20 | Systeme de communication a elimination active du bruit |
Country Status (8)
Country | Link |
---|---|
US (1) | US5033082A (fr) |
EP (1) | EP0411801B1 (fr) |
JP (1) | JP3101302B2 (fr) |
AT (1) | ATE171004T1 (fr) |
AU (1) | AU634798B2 (fr) |
CA (1) | CA2021676C (fr) |
DE (1) | DE69032637T2 (fr) |
ES (1) | ES2123496T3 (fr) |
Families Citing this family (82)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5313945A (en) * | 1989-09-18 | 1994-05-24 | Noise Cancellation Technologies, Inc. | Active attenuation system for medical patients |
GB2239971B (en) * | 1989-12-06 | 1993-09-29 | Ca Nat Research Council | System for separating speech from background noise |
US5526819A (en) * | 1990-01-25 | 1996-06-18 | Baylor College Of Medicine | Method and apparatus for distortion product emission testing of heating |
WO1992005538A1 (fr) * | 1990-09-14 | 1992-04-02 | Chris Todter | Systemes de suppression de bruits parasites |
US5172416A (en) * | 1990-11-14 | 1992-12-15 | Nelson Industries, Inc. | Active attenuation system with specified output acoustic wave |
US5396561A (en) * | 1990-11-14 | 1995-03-07 | Nelson Industries, Inc. | Active acoustic attenuation and spectral shaping system |
US5216721A (en) * | 1991-04-25 | 1993-06-01 | Nelson Industries, Inc. | Multi-channel active acoustic attenuation system |
JP3114074B2 (ja) * | 1991-06-21 | 2000-12-04 | 株式会社日立製作所 | 医療用診断装置 |
US5283834A (en) * | 1991-08-26 | 1994-02-01 | Nelson Industries, Inc. | Acoustic system suppressing detection of higher order modes |
US5293425A (en) * | 1991-12-03 | 1994-03-08 | Massachusetts Institute Of Technology | Active noise reducing |
WO1993021876A1 (fr) * | 1992-04-30 | 1993-11-11 | Noise Cancellation Technologies Inc. | Casque mains libres a suppression de bruit |
US5699436A (en) * | 1992-04-30 | 1997-12-16 | Noise Cancellation Technologies, Inc. | Hands free noise canceling headset |
JPH05316587A (ja) * | 1992-05-08 | 1993-11-26 | Sony Corp | マイクロホン装置 |
US5251263A (en) * | 1992-05-22 | 1993-10-05 | Andrea Electronics Corporation | Adaptive noise cancellation and speech enhancement system and apparatus therefor |
US5278913A (en) * | 1992-07-28 | 1994-01-11 | Nelson Industries, Inc. | Active acoustic attenuation system with power limiting |
US5390255A (en) * | 1992-09-29 | 1995-02-14 | Nelson Industries, Inc. | Active acoustic attenuation system with error and model copy input |
US5386477A (en) * | 1993-02-11 | 1995-01-31 | Digisonix, Inc. | Active acoustic control system matching model reference |
CA2115610C (fr) * | 1993-02-12 | 2000-05-23 | Shigenobu Minami | Appareil de transmission vocale stereo, eliminateur d'echos et appareil d'entree-sortie audio utilisant cet eliminateur |
US5526421A (en) * | 1993-02-16 | 1996-06-11 | Berger; Douglas L. | Voice transmission systems with voice cancellation |
US5539831A (en) * | 1993-08-16 | 1996-07-23 | The University Of Mississippi | Active noise control stethoscope |
US5406622A (en) * | 1993-09-02 | 1995-04-11 | At&T Corp. | Outbound noise cancellation for telephonic handset |
WO1995008155A1 (fr) * | 1993-09-17 | 1995-03-23 | Noise Cancellation Technologies, Inc. | Modelisation causale de bruit a impulsion previsible |
GB9319498D0 (en) * | 1993-09-21 | 1993-11-03 | Marconi Gec Ltd | Magentic resonance apparatus |
US5410607A (en) * | 1993-09-24 | 1995-04-25 | Sri International | Method and apparatus for reducing noise radiated from a complex vibrating surface |
BE1007806A3 (nl) * | 1993-11-30 | 1995-10-24 | Philips Electronics Nv | Magnetisch resonantie apparaat bevattende een communicatiesysteem. |
US5586189A (en) * | 1993-12-14 | 1996-12-17 | Digisonix, Inc. | Active adaptive control system with spectral leak |
CA2148962C (fr) * | 1994-05-23 | 2000-03-28 | Douglas G. Pedersen | Systeme de commande adaptatif actif a coherence optimisee |
US5557682A (en) * | 1994-07-12 | 1996-09-17 | Digisonix | Multi-filter-set active adaptive control system |
US5621803A (en) * | 1994-09-02 | 1997-04-15 | Digisonix, Inc. | Active attenuation system with on-line modeling of feedback path |
EP0786131B1 (fr) * | 1994-10-13 | 2002-01-02 | The Boeing Company | Systeme utilisant des transducteurs electropneumatiques pour reduire le bruit de soufflerie des moteurs a reaction |
US5602928A (en) * | 1995-01-05 | 1997-02-11 | Digisonix, Inc. | Multi-channel communication system |
US5664019A (en) * | 1995-02-08 | 1997-09-02 | Interval Research Corporation | Systems for feedback cancellation in an audio interface garment |
US5715320A (en) * | 1995-08-21 | 1998-02-03 | Digisonix, Inc. | Active adaptive selective control system |
US5710822A (en) * | 1995-11-07 | 1998-01-20 | Digisonix, Inc. | Frequency selective active adaptive control system |
JP3654980B2 (ja) * | 1995-11-30 | 2005-06-02 | 富士通株式会社 | 能動騒音制御装置及び波形変換装置 |
DE69631955T2 (de) * | 1995-12-15 | 2005-01-05 | Koninklijke Philips Electronics N.V. | Verfahren und schaltung zur adaptiven rauschunterdrückung und sendeempfänger |
US5706344A (en) * | 1996-03-29 | 1998-01-06 | Digisonix, Inc. | Acoustic echo cancellation in an integrated audio and telecommunication system |
US5848146A (en) * | 1996-05-10 | 1998-12-08 | Rane Corporation | Audio system for conferencing/presentation room |
US6072881A (en) * | 1996-07-08 | 2000-06-06 | Chiefs Voice Incorporated | Microphone noise rejection system |
US6151397A (en) * | 1997-05-16 | 2000-11-21 | Motorola, Inc. | Method and system for reducing undesired signals in a communication environment |
AUPO714197A0 (en) | 1997-06-02 | 1997-06-26 | University Of Melbourne, The | Multi-strategy array processor |
US6496581B1 (en) * | 1997-09-11 | 2002-12-17 | Digisonix, Inc. | Coupled acoustic echo cancellation system |
US6295364B1 (en) | 1998-03-30 | 2001-09-25 | Digisonix, Llc | Simplified communication system |
US6420975B1 (en) | 1999-08-25 | 2002-07-16 | Donnelly Corporation | Interior rearview mirror sound processing system |
US6208949B1 (en) | 1998-07-01 | 2001-03-27 | Adaptive Audio, Inc. | Method and apparatus for dynamical system analysis |
US6363156B1 (en) | 1998-11-18 | 2002-03-26 | Lear Automotive Dearborn, Inc. | Integrated communication system for a vehicle |
CN1134767C (zh) * | 1999-09-23 | 2004-01-14 | 皇家菲利浦电子有限公司 | 消音模块和语音识别设备以及消费者电子系统 |
ATE248497T1 (de) * | 1999-12-09 | 2003-09-15 | Frederick Johannes Bruwer | Sprachsverteilungssystem |
CN1406372A (zh) * | 2000-02-29 | 2003-03-26 | 艾利森公司 | 用于降低空间移动信号源噪声的方法和系统 |
US6320968B1 (en) | 2000-06-28 | 2001-11-20 | Esion-Tech, Llc | Adaptive noise rejection system and method |
DE10041885A1 (de) * | 2000-08-25 | 2002-03-07 | Mueller Bbm Gmbh | Sprachsignalübertragungssystem für Fahrzeuge |
US6549629B2 (en) | 2001-02-21 | 2003-04-15 | Digisonix Llc | DVE system with normalized selection |
US6665411B2 (en) | 2001-02-21 | 2003-12-16 | Digisonix Llc | DVE system with instability detection |
US6594368B2 (en) | 2001-02-21 | 2003-07-15 | Digisonix, Llc | DVE system with dynamic range processing |
EP1251714B2 (fr) * | 2001-04-12 | 2015-06-03 | Sound Design Technologies Ltd. | Système digital de prothèse auditive |
US20030016833A1 (en) * | 2001-07-19 | 2003-01-23 | Siemens Vdo Automotive, Inc. | Active noise cancellation system utilizing a signal delay to accommodate noise phase change |
US6937980B2 (en) * | 2001-10-02 | 2005-08-30 | Telefonaktiebolaget Lm Ericsson (Publ) | Speech recognition using microphone antenna array |
US7286993B2 (en) * | 2002-01-31 | 2007-10-23 | Product Discovery, Inc. | Holographic speech translation system and method |
DE10310575A1 (de) * | 2002-04-16 | 2003-11-06 | Siemens Ag | Verfahren zum lokalen Vermindern des von einem medizinischen Diagnose- oder Therapiegerät erzeugten Betriebsgeräusches sowie medizinisches Diagnose- oder Therapiegerät mit einer Einrichtung zum Durchführen eines solchen Verfahrens |
US7042218B2 (en) * | 2004-05-06 | 2006-05-09 | General Electric Company | System and method for reducing auditory perception of noise associated with a medical imaging process |
US9247346B2 (en) * | 2007-12-07 | 2016-01-26 | Northern Illinois Research Foundation | Apparatus, system and method for noise cancellation and communication for incubators and related devices |
GB2461315B (en) | 2008-06-27 | 2011-09-14 | Wolfson Microelectronics Plc | Noise cancellation system |
US9020158B2 (en) * | 2008-11-20 | 2015-04-28 | Harman International Industries, Incorporated | Quiet zone control system |
US8135140B2 (en) | 2008-11-20 | 2012-03-13 | Harman International Industries, Incorporated | System for active noise control with audio signal compensation |
US8718289B2 (en) * | 2009-01-12 | 2014-05-06 | Harman International Industries, Incorporated | System for active noise control with parallel adaptive filter configuration |
US8189799B2 (en) * | 2009-04-09 | 2012-05-29 | Harman International Industries, Incorporated | System for active noise control based on audio system output |
US8199924B2 (en) * | 2009-04-17 | 2012-06-12 | Harman International Industries, Incorporated | System for active noise control with an infinite impulse response filter |
US8077873B2 (en) * | 2009-05-14 | 2011-12-13 | Harman International Industries, Incorporated | System for active noise control with adaptive speaker selection |
US20110091047A1 (en) * | 2009-10-20 | 2011-04-21 | Alon Konchitsky | Active Noise Control in Mobile Devices |
US11471091B2 (en) * | 2010-07-29 | 2022-10-18 | Kulangara Sivadas | Mind strength trainer |
DE102010041146A1 (de) * | 2010-09-21 | 2012-03-22 | Siemens Aktiengesellschaft | Verbesserung der Patientenkommunikation in einem MRT |
US9502050B2 (en) | 2012-06-10 | 2016-11-22 | Nuance Communications, Inc. | Noise dependent signal processing for in-car communication systems with multiple acoustic zones |
CN104737475B (zh) * | 2012-06-10 | 2016-12-14 | 纽昂斯通讯公司 | 针对具有多个声学区域的车载通信系统的风噪声检测 |
US9672805B2 (en) | 2014-12-12 | 2017-06-06 | Qualcomm Incorporated | Feedback cancelation for enhanced conversational communications in shared acoustic space |
US9704509B2 (en) * | 2015-07-29 | 2017-07-11 | Harman International Industries, Inc. | Active noise cancellation apparatus and method for improving voice recognition performance |
US10542154B2 (en) | 2015-10-16 | 2020-01-21 | Panasonic Intellectual Property Management Co., Ltd. | Device for assisting two-way conversation and method for assisting two-way conversation |
WO2017130652A1 (fr) | 2016-01-28 | 2017-08-03 | 国立大学法人名古屋工業大学 | Matériau de blindage contre les ondes radio, mortier, dispositif de fusion de neige, blindage contre les ondes radio, et structure |
WO2019181758A1 (fr) * | 2018-03-19 | 2019-09-26 | パナソニックIpマネジメント株式会社 | Dispositif de support de conversation |
US10565977B1 (en) | 2018-08-20 | 2020-02-18 | Verb Surgical Inc. | Surgical tool having integrated microphones |
DE102018216230A1 (de) * | 2018-09-24 | 2020-03-26 | Siemens Healthcare Gmbh | Verfahren zu einem Erfassen eines Kommunikationssignals einer innerhalb eines Magnetresonanzuntersuchungsraums befindlichen Person und eine entsprechende Magnetresonanzvorrichtung |
US11451905B1 (en) * | 2019-10-30 | 2022-09-20 | Social Microphone, Inc. | System and method for multi-channel acoustic echo and feedback compensation |
US11510003B1 (en) * | 2020-12-09 | 2022-11-22 | Amazon Technologies, Inc. | Distributed feedback echo cancellation |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3588352A (en) * | 1966-03-28 | 1971-06-28 | Ichiro Yamawaki | Howling elimination system for use in simultaneous two-way communicating device and a howlingless simultaneous two-way communicating device |
GB1577322A (en) * | 1976-05-13 | 1980-10-22 | Bearcroft R | Active attenuation of recurring vibrations |
JPH0740199B2 (ja) * | 1979-08-16 | 1995-05-01 | チャプリン パテンツ ホ−ルディング カンパニ− インコ−ポレ−テッド | 繰り返し振動の相殺の方法 |
US4473906A (en) * | 1980-12-05 | 1984-09-25 | Lord Corporation | Active acoustic attenuator |
DE3268382D1 (en) * | 1981-06-12 | 1986-02-20 | Sound Attenuators Ltd | Method and apparatus for reducing repetitive noise entering the ear |
ZA828700B (en) * | 1981-11-26 | 1983-09-28 | Sound Attenuators Ltd | Method of and apparatus for cancelling vibrations from a source of repetitive vibrations |
US4672674A (en) * | 1982-01-27 | 1987-06-09 | Clough Patrick V F | Communications systems |
JPS6058734A (ja) * | 1983-09-09 | 1985-04-04 | Matsushita Electric Ind Co Ltd | 自動二輪車用通話装置 |
US4649505A (en) * | 1984-07-02 | 1987-03-10 | General Electric Company | Two-input crosstalk-resistant adaptive noise canceller |
GB8423017D0 (en) * | 1984-09-12 | 1984-10-17 | Plessey Co Plc | Echo canceller |
US4589137A (en) * | 1985-01-03 | 1986-05-13 | The United States Of America As Represented By The Secretary Of The Navy | Electronic noise-reducing system |
US4625083A (en) * | 1985-04-02 | 1986-11-25 | Poikela Timo J | Voice operated switch |
US4677677A (en) * | 1985-09-19 | 1987-06-30 | Nelson Industries Inc. | Active sound attenuation system with on-line adaptive feedback cancellation |
US4636586A (en) * | 1985-09-20 | 1987-01-13 | Rca Corporation | Speakerphone with adaptive cancellation of room echoes |
CA1293693C (fr) * | 1985-10-30 | 1991-12-31 | Tetsu Taguchi | Appareil reducteur de bruit |
US4696030A (en) * | 1985-12-16 | 1987-09-22 | Elscint Ltd. | Patient operator intercom arrangements for magnetic resonance imaging systems |
US4665549A (en) * | 1985-12-18 | 1987-05-12 | Nelson Industries Inc. | Hybrid active silencer |
US4677676A (en) * | 1986-02-11 | 1987-06-30 | Nelson Industries, Inc. | Active attenuation system with on-line modeling of speaker, error path and feedback pack |
GB8603678D0 (en) * | 1986-02-14 | 1986-03-19 | Gen Electric Co Plc | Active noise control |
JPH0650829B2 (ja) * | 1986-09-16 | 1994-06-29 | 日本電気株式会社 | エコ−キヤンセラ方式モデム |
US4736431A (en) * | 1986-10-23 | 1988-04-05 | Nelson Industries, Inc. | Active attenuation system with increased dynamic range |
JPH01118900A (ja) * | 1987-11-01 | 1989-05-11 | Ricoh Co Ltd | 雑音抑圧装置 |
US4815139A (en) * | 1988-03-16 | 1989-03-21 | Nelson Industries, Inc. | Active acoustic attenuation system for higher order mode non-uniform sound field in a duct |
US4837834A (en) * | 1988-05-04 | 1989-06-06 | Nelson Industries, Inc. | Active acoustic attenuation system with differential filtering |
WO1990002513A1 (fr) * | 1988-09-16 | 1990-03-22 | Noise Cancellation Technologies, Inc. | Systeme d'attenuation actif pour patients |
US4912758A (en) * | 1988-10-26 | 1990-03-27 | International Business Machines Corporation | Full-duplex digital speakerphone |
-
1989
- 1989-07-31 US US07/388,014 patent/US5033082A/en not_active Expired - Lifetime
-
1990
- 1990-07-20 AT AT90307990T patent/ATE171004T1/de not_active IP Right Cessation
- 1990-07-20 DE DE69032637T patent/DE69032637T2/de not_active Expired - Lifetime
- 1990-07-20 EP EP90307990A patent/EP0411801B1/fr not_active Expired - Lifetime
- 1990-07-20 CA CA002021676A patent/CA2021676C/fr not_active Expired - Fee Related
- 1990-07-20 ES ES90307990T patent/ES2123496T3/es not_active Expired - Lifetime
- 1990-07-30 JP JP02202359A patent/JP3101302B2/ja not_active Expired - Lifetime
- 1990-07-30 AU AU59986/90A patent/AU634798B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
AU634798B2 (en) | 1993-03-04 |
JPH0370397A (ja) | 1991-03-26 |
EP0411801A3 (en) | 1991-10-23 |
DE69032637D1 (de) | 1998-10-15 |
JP3101302B2 (ja) | 2000-10-23 |
US5033082A (en) | 1991-07-16 |
EP0411801A2 (fr) | 1991-02-06 |
CA2021676C (fr) | 1994-07-26 |
AU5998690A (en) | 1991-01-31 |
EP0411801B1 (fr) | 1998-09-09 |
DE69032637T2 (de) | 1999-05-20 |
ATE171004T1 (de) | 1998-09-15 |
ES2123496T3 (es) | 1999-01-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2021676A1 (fr) | Systeme de communication a elimination active du bruit | |
CA2174366A1 (fr) | Methode utilisant un algorithme de projection pour supprimer des echos repartis en sous-bandes | |
AU5629196A (en) | Noise cancelling method and noise canceller | |
AU3444295A (en) | Method and device for suppressing background noise in a voice signal and corresponding system with echo cancellation | |
CA2183118A1 (fr) | Eliminateur d'echos acoustiques presents dans des sous-bandes | |
EP0465174A3 (en) | Adaptive active noise cancellation apparatus | |
DE69610214D1 (de) | Aktives lärmverminderungssystem für geschlossene raume,insbesondere flugzeugkabine | |
AU6160800A (en) | Echo cancellation device for cancelling echos in a transceiver unit | |
EP0227372A3 (fr) | Amortisseur de son actif hybride | |
DE69531246D1 (de) | Leistungsregelung in einer zellularen kommunikationsanordnung sowie empfänger | |
EP0903726A3 (fr) | Système acoustique et active d'élimination de bruille et d'écho | |
AU2785297A (en) | Noise cancellation and noise reduction apparatus | |
CA2122108A1 (fr) | Eliminateur de bruit actif a filtres adaptatifs multiples | |
EP0721178A3 (fr) | Système de communication multi-canaux | |
AU4235996A (en) | Noise cancellation apparatus | |
EP0721179A3 (fr) | Dispositif de commande de tonalité adaptif ayant une sortie contraínte et adaptive | |
CA2142013A1 (fr) | Panneau actif a affaiblissement de transmission eleve | |
CA2246865A1 (fr) | Processeur non lineaire pour suppresseur d'echo acoustique | |
CA2162571A1 (fr) | Compensateur d'echo et son procede d'apprentissage | |
AU8800291A (en) | Method and system for speech recognition without noise interference | |
CA2136950A1 (fr) | Casque selectif suractif | |
WO1996011534A3 (fr) | Procede d'annulation des interferences et recepteur associe | |
CA2204059A1 (fr) | Detection intelligente de la parole a l'extremite proche | |
CA2162538A1 (fr) | Systeme de suppression d'echos pour conferences vocales | |
CA2247429A1 (fr) | Appareil et procede pour le traitement non lineaire dans un systeme de communication |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |