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EP0642290A3 - Mobile communication apparatus with speech processing device - Google Patents

Mobile communication apparatus with speech processing device Download PDF

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Publication number
EP0642290A3
EP0642290A3 EP94202513A EP94202513A EP0642290A3 EP 0642290 A3 EP0642290 A3 EP 0642290A3 EP 94202513 A EP94202513 A EP 94202513A EP 94202513 A EP94202513 A EP 94202513A EP 0642290 A3 EP0642290 A3 EP 0642290A3
Authority
EP
European Patent Office
Prior art keywords
signal
processing device
mobile communication
communication apparatus
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.)
Withdrawn
Application number
EP94202513A
Other languages
German (de)
French (fr)
Other versions
EP0642290A2 (en
Inventor
Walter Prof. Dr. Ing. C/O Philips Kellermann
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.)
Philips Intellectual Property and Standards GmbH
Koninklijke Philips NV
Original Assignee
Philips Intellectual Property and Standards GmbH
Koninklijke Philips Electronics NV
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 Philips Intellectual Property and Standards GmbH, Koninklijke Philips Electronics NV filed Critical Philips Intellectual Property and Standards GmbH
Publication of EP0642290A2 publication Critical patent/EP0642290A2/en
Publication of EP0642290A3 publication Critical patent/EP0642290A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/20—Processing of the output signals of the acoustic transducers of an array for obtaining a desired directivity characteristic
    • H04R2430/23—Direction finding using a sum-delay beam-former

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Die Erfindung bezieht auf ein Mobilfunkgerät mit mindestens zwei Mikrophonen (M1, ...,MN). Diese dienen zur Lieferung von aus Sprach- und Störsignalanteilen (s1, ..., sN, n1, ..., nN) bestehenden Mikrophonsignalen (x1, ..., xN) an Mikrophonsignalzweige, die mit den Eingängen einer zur Bildung eines Summensignals (x) dienenden Addiervorrichtung (5) gekoppelt sind.The invention relates to a mobile device with at least two microphones (M 1 , ..., M N ). These serve for the delivery of voice and interference signal components (s 1 , ..., s N , n 1 , ..., n N ) existing microphone signals (x 1 , ..., x N ) to microphone signal branches, with the Inputs of an adder (5) serving to form a sum signal (x) are coupled.

Es wird vorgeschlagen, in den Mikrophonsignalzweigen Mittel (3) zur Gewichtung der Mikrophonsignale (x1, ..., xN) mit auf einfache Weise zu berechnenden Gewichtsfaktoren (c1, ..., cN) vorzusehen, um das Signal/Rausch-Verhältnis (SNR) des Summensignals (x) zu erhöhen.It is proposed to provide in the microphone signal branches means (3) for weighting the microphone signals (x 1 ,..., X N ) with weight factors (c 1 ,..., C N ) to be calculated in a simple manner in order to obtain the signal / Noise ratio (SNR) of the sum signal (x) increase.

Die Sprachverarbeitungsvorrichtung wird vorzugsweise in eine Freisprecheinrichtung des Mobilfunkgeräts integriert.

Figure imgaf001
The voice processing device is preferably integrated in a hands-free device of the mobile device.
Figure imgaf001
EP94202513A 1993-09-07 1994-09-02 Mobile communication apparatus with speech processing device Withdrawn EP0642290A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4330243A DE4330243A1 (en) 1993-09-07 1993-09-07 Speech processing facility
DE4330243 1993-09-07

Publications (2)

Publication Number Publication Date
EP0642290A2 EP0642290A2 (en) 1995-03-08
EP0642290A3 true EP0642290A3 (en) 2006-04-19

Family

ID=6497058

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94202513A Withdrawn EP0642290A3 (en) 1993-09-07 1994-09-02 Mobile communication apparatus with speech processing device

Country Status (4)

Country Link
US (1) US5602962A (en)
EP (1) EP0642290A3 (en)
JP (1) JP3373306B2 (en)
DE (1) DE4330243A1 (en)

Families Citing this family (107)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3046203B2 (en) * 1994-05-18 2000-05-29 三菱電機株式会社 Hands-free communication device
FI102337B1 (en) * 1995-09-13 1998-11-13 Nokia Mobile Phones Ltd Procedure and circuit arrangement for processing audio signal
US5737433A (en) * 1996-01-16 1998-04-07 Gardner; William A. Sound environment control apparatus
US6535610B1 (en) * 1996-02-07 2003-03-18 Morgan Stanley & Co. Incorporated Directional microphone utilizing spaced apart omni-directional microphones
US5774562A (en) * 1996-03-25 1998-06-30 Nippon Telegraph And Telephone Corp. Method and apparatus for dereverberation
US6978159B2 (en) * 1996-06-19 2005-12-20 Board Of Trustees Of The University Of Illinois Binaural signal processing using multiple acoustic sensors and digital filtering
KR100198289B1 (en) * 1996-12-27 1999-06-15 구자홍 Direction control method and apparatus in microphone system
US6603861B1 (en) * 1997-08-20 2003-08-05 Phonak Ag Method for electronically beam forming acoustical signals and acoustical sensor apparatus
US7146012B1 (en) * 1997-11-22 2006-12-05 Koninklijke Philips Electronics N.V. Audio processing arrangement with multiple sources
US6023514A (en) * 1997-12-22 2000-02-08 Strandberg; Malcolm W. P. System and method for factoring a merged wave field into independent components
DE19812697A1 (en) 1998-03-23 1999-09-30 Volkswagen Ag Method and device for operating a microphone arrangement, in particular in a motor vehicle
DE19818611C1 (en) * 1998-04-20 1999-09-16 Deutsche Telekom Ag Frequency range equalization method for microphone array e.g. for hands-free phone device in automobile
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
US6549586B2 (en) 1999-04-12 2003-04-15 Telefonaktiebolaget L M Ericsson System and method for dual microphone signal noise reduction using spectral subtraction
US6556966B1 (en) * 1998-08-24 2003-04-29 Conexant Systems, Inc. Codebook structure for changeable pulse multimode speech coding
WO2001071687A2 (en) * 2000-03-17 2001-09-27 The Johns Hopkins University Phased array surveillance system
ATE288666T1 (en) * 2000-05-26 2005-02-15 Koninkl Philips Electronics Nv METHOD FOR NOISE REDUCTION IN AN ADAPTIVE BEAM SHAPER
US20020054685A1 (en) * 2000-11-09 2002-05-09 Carlos Avendano System for suppressing acoustic echoes and interferences in multi-channel audio systems
US7206418B2 (en) * 2001-02-12 2007-04-17 Fortemedia, Inc. Noise suppression for a wireless communication device
JP4071510B2 (en) 2001-04-25 2008-04-02 松下電器産業株式会社 Electric motor
JP3771812B2 (en) * 2001-05-28 2006-04-26 インターナショナル・ビジネス・マシーンズ・コーポレーション Robot and control method thereof
US7274794B1 (en) * 2001-08-10 2007-09-25 Sonic Innovations, Inc. Sound processing system including forward filter that exhibits arbitrary directivity and gradient response in single wave sound environment
CA2357200C (en) * 2001-09-07 2010-05-04 Dspfactory Ltd. Listening device
GB2382748A (en) * 2001-11-28 2003-06-04 Ipwireless Inc Signal to noise plus interference ratio (SNIR) estimation with corection factor
US8098844B2 (en) * 2002-02-05 2012-01-17 Mh Acoustics, Llc Dual-microphone spatial noise suppression
US8942387B2 (en) * 2002-02-05 2015-01-27 Mh Acoustics Llc Noise-reducing directional microphone array
US7171008B2 (en) * 2002-02-05 2007-01-30 Mh Acoustics, Llc Reducing noise in audio systems
KR20030083317A (en) * 2002-04-20 2003-10-30 엘지전자 주식회사 Noise eliminate apparatus for mobile communication terminal
JP4196162B2 (en) * 2002-08-20 2008-12-17 ソニー株式会社 Automatic wind noise reduction circuit and automatic wind noise reduction method
US7039200B2 (en) * 2003-03-31 2006-05-02 Microsoft Corporation System and process for time delay estimation in the presence of correlated noise and reverberation
JP2006523058A (en) * 2003-04-08 2006-10-05 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ Method and apparatus for reducing interference noise signal portion in microphone signal
ATE420539T1 (en) 2003-05-13 2009-01-15 Harman Becker Automotive Sys METHOD AND SYSTEM FOR ADAPTIVE COMPENSATION OF MICROPHONE INEQUALITIES
EP1581026B1 (en) * 2004-03-17 2015-11-11 Nuance Communications, Inc. Method for detecting and reducing noise from a microphone array
EP1640971B1 (en) 2004-09-23 2008-08-20 Harman Becker Automotive Systems GmbH Multi-channel adaptive speech signal processing with noise reduction
US8543390B2 (en) * 2004-10-26 2013-09-24 Qnx Software Systems Limited Multi-channel periodic signal enhancement system
US7292985B2 (en) * 2004-12-02 2007-11-06 Janus Development Group Device and method for reducing stuttering
US20060147063A1 (en) * 2004-12-22 2006-07-06 Broadcom Corporation Echo cancellation in telephones with multiple microphones
US7983720B2 (en) * 2004-12-22 2011-07-19 Broadcom Corporation Wireless telephone with adaptive microphone array
US20060133621A1 (en) * 2004-12-22 2006-06-22 Broadcom Corporation Wireless telephone having multiple microphones
US20070116300A1 (en) * 2004-12-22 2007-05-24 Broadcom Corporation Channel decoding for wireless telephones with multiple microphones and multiple description transmission
US8509703B2 (en) * 2004-12-22 2013-08-13 Broadcom Corporation Wireless telephone with multiple microphones and multiple description transmission
US8345890B2 (en) 2006-01-05 2013-01-01 Audience, Inc. System and method for utilizing inter-microphone level differences for speech enhancement
US9185487B2 (en) * 2006-01-30 2015-11-10 Audience, Inc. System and method for providing noise suppression utilizing null processing noise subtraction
US8204252B1 (en) 2006-10-10 2012-06-19 Audience, Inc. System and method for providing close microphone adaptive array processing
US8194880B2 (en) * 2006-01-30 2012-06-05 Audience, Inc. System and method for utilizing omni-directional microphones for speech enhancement
US8744844B2 (en) 2007-07-06 2014-06-03 Audience, Inc. System and method for adaptive intelligent noise suppression
US7720681B2 (en) * 2006-03-23 2010-05-18 Microsoft Corporation Digital voice profiles
US8204253B1 (en) 2008-06-30 2012-06-19 Audience, Inc. Self calibration of audio device
US8150065B2 (en) * 2006-05-25 2012-04-03 Audience, Inc. System and method for processing an audio signal
US8949120B1 (en) 2006-05-25 2015-02-03 Audience, Inc. Adaptive noise cancelation
US8934641B2 (en) * 2006-05-25 2015-01-13 Audience, Inc. Systems and methods for reconstructing decomposed audio signals
US8849231B1 (en) 2007-08-08 2014-09-30 Audience, Inc. System and method for adaptive power control
US9462118B2 (en) * 2006-05-30 2016-10-04 Microsoft Technology Licensing, Llc VoIP communication content control
US8971217B2 (en) * 2006-06-30 2015-03-03 Microsoft Technology Licensing, Llc Transmitting packet-based data items
US8259926B1 (en) 2007-02-23 2012-09-04 Audience, Inc. System and method for 2-channel and 3-channel acoustic echo cancellation
JP4455614B2 (en) * 2007-06-13 2010-04-21 株式会社東芝 Acoustic signal processing method and apparatus
US8189766B1 (en) 2007-07-26 2012-05-29 Audience, Inc. System and method for blind subband acoustic echo cancellation postfiltering
US8428661B2 (en) * 2007-10-30 2013-04-23 Broadcom Corporation Speech intelligibility in telephones with multiple microphones
US8121311B2 (en) * 2007-11-05 2012-02-21 Qnx Software Systems Co. Mixer with adaptive post-filtering
US8180064B1 (en) 2007-12-21 2012-05-15 Audience, Inc. System and method for providing voice equalization
US8143620B1 (en) 2007-12-21 2012-03-27 Audience, Inc. System and method for adaptive classification of audio sources
US8411880B2 (en) * 2008-01-29 2013-04-02 Qualcomm Incorporated Sound quality by intelligently selecting between signals from a plurality of microphones
US8194882B2 (en) 2008-02-29 2012-06-05 Audience, Inc. System and method for providing single microphone noise suppression fallback
US8355511B2 (en) 2008-03-18 2013-01-15 Audience, Inc. System and method for envelope-based acoustic echo cancellation
US8223981B2 (en) * 2008-05-23 2012-07-17 Analog Devices, Inc. Wide dynamic range microphone
US8521530B1 (en) 2008-06-30 2013-08-27 Audience, Inc. System and method for enhancing a monaural audio signal
US8774423B1 (en) 2008-06-30 2014-07-08 Audience, Inc. System and method for controlling adaptivity of signal modification using a phantom coefficient
US9008329B1 (en) 2010-01-26 2015-04-14 Audience, Inc. Noise reduction using multi-feature cluster tracker
US8798290B1 (en) 2010-04-21 2014-08-05 Audience, Inc. Systems and methods for adaptive signal equalization
TWI419149B (en) * 2010-11-05 2013-12-11 Ind Tech Res Inst Systems and methods for suppressing noise
US9100735B1 (en) 2011-02-10 2015-08-04 Dolby Laboratories Licensing Corporation Vector noise cancellation
US9253566B1 (en) * 2011-02-10 2016-02-02 Dolby Laboratories Licensing Corporation Vector noise cancellation
EP2490459B1 (en) * 2011-02-18 2018-04-11 Svox AG Method for voice signal blending
CN104508737B (en) 2012-06-10 2017-12-05 纽昂斯通讯公司 The signal transacting related for the noise of the Vehicular communication system with multiple acoustical areas
TWI466108B (en) * 2012-07-31 2014-12-21 Acer Inc Audio processing method and audio processing device
CN104704560B (en) 2012-09-04 2018-06-05 纽昂斯通讯公司 Formant-dependent speech signal enhancement
US9640194B1 (en) 2012-10-04 2017-05-02 Knowles Electronics, Llc Noise suppression for speech processing based on machine-learning mask estimation
DE102013005049A1 (en) * 2013-03-22 2014-09-25 Unify Gmbh & Co. Kg Method and apparatus for controlling voice communication and use thereof
US9536540B2 (en) 2013-07-19 2017-01-03 Knowles Electronics, Llc Speech signal separation and synthesis based on auditory scene analysis and speech modeling
GB2542961B (en) * 2014-05-29 2021-08-11 Cirrus Logic Int Semiconductor Ltd Microphone mixing for wind noise reduction
CN106797512B (en) 2014-08-28 2019-10-25 美商楼氏电子有限公司 Method, system and non-transitory computer readable storage medium for multi-source noise suppression
US9565493B2 (en) 2015-04-30 2017-02-07 Shure Acquisition Holdings, Inc. Array microphone system and method of assembling the same
US9554207B2 (en) 2015-04-30 2017-01-24 Shure Acquisition Holdings, Inc. Offset cartridge microphones
US9894434B2 (en) 2015-12-04 2018-02-13 Sennheiser Electronic Gmbh & Co. Kg Conference system with a microphone array system and a method of speech acquisition in a conference system
US11064291B2 (en) 2015-12-04 2021-07-13 Sennheiser Electronic Gmbh & Co. Kg Microphone array system
US10367948B2 (en) 2017-01-13 2019-07-30 Shure Acquisition Holdings, Inc. Post-mixing acoustic echo cancellation systems and methods
CN112335261B (en) 2018-06-01 2023-07-18 舒尔获得控股公司 patterned microphone array
US11297423B2 (en) 2018-06-15 2022-04-05 Shure Acquisition Holdings, Inc. Endfire linear array microphone
WO2020061353A1 (en) 2018-09-20 2020-03-26 Shure Acquisition Holdings, Inc. Adjustable lobe shape for array microphones
US11438691B2 (en) 2019-03-21 2022-09-06 Shure Acquisition Holdings, Inc. Auto focus, auto focus within regions, and auto placement of beamformed microphone lobes with inhibition functionality
CN113841419B (en) 2019-03-21 2024-11-12 舒尔获得控股公司 Ceiling array microphone enclosure and associated design features
US11558693B2 (en) 2019-03-21 2023-01-17 Shure Acquisition Holdings, Inc. Auto focus, auto focus within regions, and auto placement of beamformed microphone lobes with inhibition and voice activity detection functionality
TW202101422A (en) 2019-05-23 2021-01-01 美商舒爾獲得控股公司 Steerable speaker array, system, and method for the same
JP7731292B2 (en) 2019-05-31 2025-08-29 シュアー アクイジッション ホールディングス インコーポレイテッド Integrated low latency automixer with voice and noise activity detection
WO2021041275A1 (en) 2019-08-23 2021-03-04 Shore Acquisition Holdings, Inc. Two-dimensional microphone array with improved directivity
WO2021087377A1 (en) 2019-11-01 2021-05-06 Shure Acquisition Holdings, Inc. Proximity microphone
CN111009255B (en) * 2019-11-29 2022-04-22 深圳市无限动力发展有限公司 Method, apparatus, computer device and storage medium for eliminating internal noise interference
US11552611B2 (en) 2020-02-07 2023-01-10 Shure Acquisition Holdings, Inc. System and method for automatic adjustment of reference gain
USD944776S1 (en) 2020-05-05 2022-03-01 Shure Acquisition Holdings, Inc. Audio device
WO2021243368A2 (en) 2020-05-29 2021-12-02 Shure Acquisition Holdings, Inc. Transducer steering and configuration systems and methods using a local positioning system
US11696083B2 (en) 2020-10-21 2023-07-04 Mh Acoustics, Llc In-situ calibration of microphone arrays
CN116918351A (en) 2021-01-28 2023-10-20 舒尔获得控股公司 Hybrid Audio Beamforming System
US12452584B2 (en) 2021-01-29 2025-10-21 Shure Acquisition Holdings, Inc. Scalable conferencing systems and methods
US12542123B2 (en) 2021-08-31 2026-02-03 Shure Acquisition Holdings, Inc. Mask non-linear processor for acoustic echo cancellation
CN118216161A (en) 2021-10-04 2024-06-18 舒尔获得控股公司 Networked automatic mixer system and method
US12525083B2 (en) 2021-11-05 2026-01-13 Shure Acquisition Holdings, Inc. Distributed algorithm for automixing speech over wireless networks
WO2023133513A1 (en) 2022-01-07 2023-07-13 Shure Acquisition Holdings, Inc. Audio beamforming with nulling control system and methods

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658426A (en) * 1985-10-10 1987-04-14 Harold Antin Adaptive noise suppressor
US4672674A (en) * 1982-01-27 1987-06-09 Clough Patrick V F Communications systems
US4956867A (en) * 1989-04-20 1990-09-11 Massachusetts Institute Of Technology Adaptive beamforming for noise reduction

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4536887A (en) * 1982-10-18 1985-08-20 Nippon Telegraph & Telephone Public Corporation Microphone-array apparatus and method for extracting desired signal
US4802227A (en) 1987-04-03 1989-01-31 American Telephone And Telegraph Company Noise reduction processing arrangement for microphone arrays
IL84948A0 (en) * 1987-12-25 1988-06-30 D S P Group Israel Ltd Noise reduction system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672674A (en) * 1982-01-27 1987-06-09 Clough Patrick V F Communications systems
US4658426A (en) * 1985-10-10 1987-04-14 Harold Antin Adaptive noise suppressor
US4956867A (en) * 1989-04-20 1990-09-11 Massachusetts Institute Of Technology Adaptive beamforming for noise reduction

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ZELINSKI R: "A microphone array with adaptive post-filtering for noise reduction in reverberant rooms", ICASSP, 11 April 1988 (1988-04-11), New York, pages 2578 - 2581, XP010072723 *

Also Published As

Publication number Publication date
US5602962A (en) 1997-02-11
DE4330243A1 (en) 1995-03-09
EP0642290A2 (en) 1995-03-08
JP3373306B2 (en) 2003-02-04
JPH07240992A (en) 1995-09-12

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