EP0948237A3 - Verfahren zur Störbefreiung eines Mikrophonsignals - Google Patents

Verfahren zur Störbefreiung eines Mikrophonsignals Download PDF

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Publication number
EP0948237A3
EP0948237A3 EP99106123A EP99106123A EP0948237A3 EP 0948237 A3 EP0948237 A3 EP 0948237A3 EP 99106123 A EP99106123 A EP 99106123A EP 99106123 A EP99106123 A EP 99106123A EP 0948237 A3 EP0948237 A3 EP 0948237A3
Authority
EP
European Patent Office
Prior art keywords
signal
noise
microphone signal
noise suppression
microphone
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
Application number
EP99106123A
Other languages
English (en)
French (fr)
Other versions
EP0948237A2 (de
EP0948237B1 (de
Inventor
Hans-Jörg Thomas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harman Becker Automotive Systems GmbH
Original Assignee
Harman Becker Automotive Systems GmbH
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 Harman Becker Automotive Systems GmbH filed Critical Harman Becker Automotive Systems GmbH
Publication of EP0948237A2 publication Critical patent/EP0948237A2/de
Publication of EP0948237A3 publication Critical patent/EP0948237A3/de
Application granted granted Critical
Publication of EP0948237B1 publication Critical patent/EP0948237B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/007—Protection circuits for transducers
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G10L2021/02168—Noise filtering characterised by the method used for estimating noise the estimation exclusively taking place during speech pauses

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

Für ein Verfahren zur Befreiung eines Mikrophonsignals von Störsignalanteilen durch Erzeugen eines Kompensationssignals und Subtraktion des Kompensationssignals vom Mikrophonsignal wird vorgeschlagen, die Kompensation vollständig im Frequenzbereich vorzunehmen und auch das Ausgangssignal im Frequenzbereich zu verarbeiten. Es werden Maßnahmen zur Verringerung des Aufwands bei der Signalverarbeitung angegeben. Vorteilhafte Weiterbildungen sehen beispielsweise vor, daß zur Störbefreiung eines Sprachsignals eine Filtereinstellung verwandt wird, welche in einer vorhergehenden Sprachpause gewonnen wurde, und/oder das für lange Impulsantworten das Nachbildungsfilter in mehrere Teilfilter aufgespalten wird. Die Erfindung ist insbesondere vorteilhaft für die Befreiung eines Spracheingabesignals in einem Fahrzeug von Störsignalanteilen eines Radios oder dgl., dessen Quellsignal als Referenzsignal zur Verfügung steht.
EP99106123A 1998-04-03 1999-04-01 Verfahren zur Störbefreiung eines Mikrophonsignals Expired - Lifetime EP0948237B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19814971A DE19814971A1 (de) 1998-04-03 1998-04-03 Verfahren zur Störbefreiung eines Mikrophonsignals
DE19814971 1998-04-03

Publications (3)

Publication Number Publication Date
EP0948237A2 EP0948237A2 (de) 1999-10-06
EP0948237A3 true EP0948237A3 (de) 2006-02-08
EP0948237B1 EP0948237B1 (de) 2008-06-11

Family

ID=7863491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99106123A Expired - Lifetime EP0948237B1 (de) 1998-04-03 1999-04-01 Verfahren zur Störbefreiung eines Mikrophonsignals

Country Status (4)

Country Link
US (1) US6895095B1 (de)
EP (1) EP0948237B1 (de)
AT (1) ATE398326T1 (de)
DE (2) DE19814971A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19958836A1 (de) 1999-11-29 2001-05-31 Deutsche Telekom Ag Verfahren und Anordnung zur Verbesserung der Kommunikation in einem Fahrzeug
DE10041885A1 (de) * 2000-08-25 2002-03-07 Mueller Bbm Gmbh Sprachsignalübertragungssystem für Fahrzeuge
DE10052991A1 (de) * 2000-10-19 2002-05-02 Deutsche Telekom Ag Verfahren zur Ermittlung raumakustischer und elektroakustischer Parameter
DE10221990B4 (de) * 2002-05-17 2006-10-12 Audi Ag Reduzierung von Störgeräuschen an Autoradios mit Busanschlüssen
US20040047475A1 (en) * 2002-09-09 2004-03-11 Ford Global Technologies, Inc. Audio noise cancellation system for a sensor in an automotive vehicle
JP2005218010A (ja) * 2004-02-02 2005-08-11 Matsushita Electric Ind Co Ltd 車両用データ伝送システム
US7949520B2 (en) 2004-10-26 2011-05-24 QNX Software Sytems Co. Adaptive filter pitch extraction
US8543390B2 (en) 2004-10-26 2013-09-24 Qnx Software Systems Limited Multi-channel periodic signal enhancement system
US7716046B2 (en) * 2004-10-26 2010-05-11 Qnx Software Systems (Wavemakers), Inc. Advanced periodic signal enhancement
US8170879B2 (en) 2004-10-26 2012-05-01 Qnx Software Systems Limited Periodic signal enhancement system
US8306821B2 (en) 2004-10-26 2012-11-06 Qnx Software Systems Limited Sub-band periodic signal enhancement system
US7525440B2 (en) 2005-06-01 2009-04-28 Bose Corporation Person monitoring
DE602006005228D1 (de) * 2006-04-18 2009-04-02 Harman Becker Automotive Sys System und Verfahren zur Mehrkanal-Echokompensation
DE602006009770D1 (de) * 2006-05-08 2009-11-26 Harman Becker Automotive Sys Echoverringerung für zeitvariante Systeme
DE602006007685D1 (de) * 2006-05-10 2009-08-20 Harman Becker Automotive Sys Kompensation von Mehrkanalechos durch Dekorrelation
EP1879181B1 (de) * 2006-07-11 2014-05-21 Nuance Communications, Inc. Verfahren zur Kompensation von Audiosignalkomponenten in einem Fahrzeugkommunikationssystem und Vorrichtung dafür
US20080063122A1 (en) * 2006-09-07 2008-03-13 Gwo-Jia Jong Method for suppressing co-channel interference from different frequency
ATE522078T1 (de) * 2006-12-18 2011-09-15 Harman Becker Automotive Sys Echokompensation mit geringer komplexität
US7577257B2 (en) * 2006-12-21 2009-08-18 Verizon Services Operations, Inc. Large scale quantum cryptographic key distribution network
US20080225688A1 (en) * 2007-03-14 2008-09-18 Kowalski John M Systems and methods for improving reference signals for spatially multiplexed cellular systems
ATE524015T1 (de) * 2007-05-22 2011-09-15 Harman Becker Automotive Sys Verfahren und vorrichtung zur verarbeitung mindestens zweier mikrofonsignale zur sendung eines ausgangssignals mit reduzierter interferenz
ATE532324T1 (de) * 2007-07-16 2011-11-15 Nuance Communications Inc Verfahren und system zur verarbeitung von tonsignalen in einem multimediasystem eines fahrzeugs
US8850154B2 (en) 2007-09-11 2014-09-30 2236008 Ontario Inc. Processing system having memory partitioning
US8904400B2 (en) 2007-09-11 2014-12-02 2236008 Ontario Inc. Processing system having a partitioning component for resource partitioning
US8694310B2 (en) 2007-09-17 2014-04-08 Qnx Software Systems Limited Remote control server protocol system
US8209514B2 (en) 2008-02-04 2012-06-26 Qnx Software Systems Limited Media processing system having resource partitioning
EP2222091B1 (de) 2009-02-23 2013-04-24 Nuance Communications, Inc. Verfahren zum Bestimmen eines Satzes von Filterkoeffizienten für ein Mittel zur Kompensierung von akustischem Echo
EP2733699B1 (de) * 2011-10-07 2017-09-06 Panasonic Intellectual Property Corporation of America Skalierbare audiokodiervorrichtung und skalierbares audiokodierverfahren
DE102014214143B4 (de) * 2014-03-14 2015-12-31 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zum Verarbeiten eines Signals im Frequenzbereich
US20180166073A1 (en) * 2016-12-13 2018-06-14 Ford Global Technologies, Llc Speech Recognition Without Interrupting The Playback Audio
WO2018121972A1 (en) * 2016-12-30 2018-07-05 Harman Becker Automotive Systems Gmbh Acoustic echo canceling
DE102017101497B4 (de) 2017-01-26 2020-08-27 Infineon Technologies Ag Mikro-Elektro-Mechanisches-System (MEMS) -Schaltkreis und Verfahren zum Rekonstruieren einer Störgröße

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0250048A1 (de) * 1986-06-20 1987-12-23 Koninklijke Philips Electronics N.V. Blockadaptives, digitales Filter im Frequenzgebiet
US5245664A (en) * 1989-12-29 1993-09-14 Nissan Motor Company, Limited Active noise control system for automotive vehicle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5649012A (en) * 1995-09-15 1997-07-15 Hughes Electronics Method for synthesizing an echo path in an echo canceller
US5937060A (en) * 1996-02-09 1999-08-10 Texas Instruments Incorporated Residual echo suppression
JP3654470B2 (ja) * 1996-09-13 2005-06-02 日本電信電話株式会社 サブバンド多チャネル音声通信会議用反響消去方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0250048A1 (de) * 1986-06-20 1987-12-23 Koninklijke Philips Electronics N.V. Blockadaptives, digitales Filter im Frequenzgebiet
US5245664A (en) * 1989-12-29 1993-09-14 Nissan Motor Company, Limited Active noise control system for automotive vehicle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
GUSTAFSSON S ET AL: "Combined acoustic echo control and noise reduction for hands-free telephony", SIGNAL PROCESSING, ELSEVIER SCIENCE PUBLISHERS B.V. AMSTERDAM, NL, vol. 64, no. 1, January 1998 (1998-01-01), pages 21 - 32, XP004108821, ISSN: 0165-1684 *

Also Published As

Publication number Publication date
US6895095B1 (en) 2005-05-17
DE59914782D1 (de) 2008-07-24
EP0948237A2 (de) 1999-10-06
DE19814971A1 (de) 1999-10-07
EP0948237B1 (de) 2008-06-11
ATE398326T1 (de) 2008-07-15

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