EP1453349A3 - Self-calibration of a microphone array - Google Patents

Self-calibration of a microphone array Download PDF

Info

Publication number
EP1453349A3
EP1453349A3 EP04450034A EP04450034A EP1453349A3 EP 1453349 A3 EP1453349 A3 EP 1453349A3 EP 04450034 A EP04450034 A EP 04450034A EP 04450034 A EP04450034 A EP 04450034A EP 1453349 A3 EP1453349 A3 EP 1453349A3
Authority
EP
European Patent Office
Prior art keywords
microphones
signal
calibration
self
microphone array
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Withdrawn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
EP04450034A
Other languages
German (de)
French (fr)
Other versions
EP1453349A2 (en
Inventor
Martin Opitz
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.)
AKG Acoustics GmbH
Original Assignee
AKG Acoustics 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
Priority claimed from EP03450050A external-priority patent/EP1453348A1/en
Application filed by AKG Acoustics GmbH filed Critical AKG Acoustics GmbH
Priority to EP04450034A priority Critical patent/EP1453349A3/en
Publication of EP1453349A2 publication Critical patent/EP1453349A2/en
Publication of EP1453349A3 publication Critical patent/EP1453349A3/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Withdrawn legal-status Critical Current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
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H04R29/004—Monitoring arrangements; Testing arrangements for microphones
    • H04R29/005—Microphone arrays
    • H04R29/006—Microphone matching
    • 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
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
    • H04R2201/403—Linear arrays of transducers

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

The invention relates to an array microphone with several individual microphones (1-4) connected with a signal processor (11) that for each individual microphone, comprises at least one digital filter, in particular for voice recognition.
The invention is characterized in that at least one loudspeaker (5) is provided, which is arranged in the acquisition area of each of the individual microphones (1-4), in that an electronic circuit is provided, which applies a signal to the loudspeaker (5) in such a manner that it emits a predetermined periodic noise signal, and in that the signal processor (11) evaluates the response signals coming from each of the microphones and/or from each of the digital filters as a response to the reception of the periodic noise signal.
EP04450034A 2003-02-25 2004-02-18 Self-calibration of a microphone array Withdrawn EP1453349A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04450034A EP1453349A3 (en) 2003-02-25 2004-02-18 Self-calibration of a microphone array

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP03450050 2003-02-25
EP03450050A EP1453348A1 (en) 2003-02-25 2003-02-25 Self-calibration of microphone arrays
EP04450034A EP1453349A3 (en) 2003-02-25 2004-02-18 Self-calibration of a microphone array

Publications (2)

Publication Number Publication Date
EP1453349A2 EP1453349A2 (en) 2004-09-01
EP1453349A3 true EP1453349A3 (en) 2009-04-29

Family

ID=32773678

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04450034A Withdrawn EP1453349A3 (en) 2003-02-25 2004-02-18 Self-calibration of a microphone array

Country Status (1)

Country Link
EP (1) EP1453349A3 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4965847B2 (en) 2005-10-27 2012-07-04 ヤマハ株式会社 Audio signal transmitter / receiver
WO2007052374A1 (en) 2005-11-02 2007-05-10 Yamaha Corporation Voice signal transmitting/receiving apparatus
JP5070993B2 (en) 2007-08-27 2012-11-14 富士通株式会社 Sound processing apparatus, phase difference correction method, and computer program
US8054991B2 (en) 2008-04-17 2011-11-08 Panasonic Corporation Sound pickup apparatus and conference telephone
US8244528B2 (en) 2008-04-25 2012-08-14 Nokia Corporation Method and apparatus for voice activity determination
US8611556B2 (en) 2008-04-25 2013-12-17 Nokia Corporation Calibrating multiple microphones
US8275136B2 (en) 2008-04-25 2012-09-25 Nokia Corporation Electronic device speech enhancement
WO2010089821A1 (en) 2009-02-06 2010-08-12 パナソニック株式会社 Hearing aid
JP2012169839A (en) * 2011-02-14 2012-09-06 Sony Corp Sound signal output apparatus and sound signal output method
US9202453B2 (en) * 2012-12-05 2015-12-01 Bose Corporation Asymmetric temperature compensation of microphone sensitivity at an active noise reduction system
CN104869519B (en) * 2015-04-21 2018-07-24 歌尔股份有限公司 A kind of method and system of test microphone background noise
CN106303879B (en) * 2015-05-28 2024-01-16 钰太芯微电子科技（上海）有限公司 Detection device and detection method based on time domain analysis
US10616682B2 (en) * 2018-01-12 2020-04-07 Sorama Calibration of microphone arrays with an uncalibrated source
CN113259830B (en) * 2021-04-26 2023-03-21 歌尔股份有限公司 Multi-microphone consistency test system and method
CN114449434B (en) * 2022-04-07 2022-08-16 北京荣耀终端有限公司 Microphone calibration method and electronic equipment

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0268788A2 (en) * 1986-10-29 1988-06-01 Atlas Elektronik Gmbh Method and device for testing the operation of a microphone
US5825897A (en) * 1992-10-29 1998-10-20 Andrea Electronics Corporation Noise cancellation apparatus
EP1081985A2 (en) * 1999-09-01 2001-03-07 TRW Inc. Microphone array processing system for noisly multipath environments
US20020146136A1 (en) * 2001-04-05 2002-10-10 Carter Charles H. Method for acoustic transducer calibration
US20030016835A1 (en) * 2001-07-18 2003-01-23 Elko Gary W. Adaptive close-talking differential microphone array

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0268788A2 (en) * 1986-10-29 1988-06-01 Atlas Elektronik Gmbh Method and device for testing the operation of a microphone
US5825897A (en) * 1992-10-29 1998-10-20 Andrea Electronics Corporation Noise cancellation apparatus
EP1081985A2 (en) * 1999-09-01 2001-03-07 TRW Inc. Microphone array processing system for noisly multipath environments
US20020146136A1 (en) * 2001-04-05 2002-10-10 Carter Charles H. Method for acoustic transducer calibration
US20030016835A1 (en) * 2001-07-18 2003-01-23 Elko Gary W. Adaptive close-talking differential microphone array

Also Published As

Publication number Publication date
EP1453349A2 (en) 2004-09-01

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