EP1465453A3 - Automatic adjustment of a directional microphone system with at least three microphones - Google Patents

Automatic adjustment of a directional microphone system with at least three microphones Download PDF

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Publication number
EP1465453A3
EP1465453A3 EP04004215A EP04004215A EP1465453A3 EP 1465453 A3 EP1465453 A3 EP 1465453A3 EP 04004215 A EP04004215 A EP 04004215A EP 04004215 A EP04004215 A EP 04004215A EP 1465453 A3 EP1465453 A3 EP 1465453A3
Authority
EP
European Patent Office
Prior art keywords
microphones
microphone system
automatic adjustment
directional microphone
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
EP04004215A
Other languages
German (de)
French (fr)
Other versions
EP1465453B1 (en
EP1465453A2 (en
Inventor
Torsten Dr. Niederdränk
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.)
Sivantos GmbH
Original Assignee
Siemens Audioligische Technik 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 Siemens Audioligische Technik GmbH filed Critical Siemens Audioligische Technik GmbH
Publication of EP1465453A2 publication Critical patent/EP1465453A2/en
Publication of EP1465453A3 publication Critical patent/EP1465453A3/en
Application granted granted Critical
Publication of EP1465453B1 publication Critical patent/EP1465453B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/35—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using translation techniques
    • H04R25/356—Amplitude, e.g. amplitude shift or compression
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/40—Arrangements for obtaining a desired directivity characteristic
    • H04R25/407—Circuits for combining signals of a plurality of transducers
    • 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

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)
  • Neurosurgery (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

Bei einem Richtmikrofonsystem zweiter oder höherer Ordnung mit wenigstens drei omnidirektionalen Mikrofonen (21, 22, 23; 55, 56, 57) soll ein Mikrofonabgleich durchgeführt werden. In einem ersten Verfahrensschritt werden die Signalpegel der von den drei omnidirektionalen Mikrofonen (21, 22, 23; 55, 56, 57) erzeugten Mikrofonsignale abgeglichen. Anschließend wird die Phase bei einem der drei Mikrofonsignale so lange variiert, bis auch die Signalpegel von Richtmikrofonen erster Ordnung, die aus den drei omnidirektionalen Mikrofonen gebildet werden, abgeglichen sind.

Figure imgaf001
In a directional microphone system of second or higher order with at least three omnidirectional microphones (21, 22, 23, 55, 56, 57), a microphone adjustment should be performed. In a first method step, the signal levels of the microphone signals generated by the three omnidirectional microphones (21, 22, 23, 55, 56, 57) are adjusted. Subsequently, the phase in one of the three microphone signals is varied until the signal levels of directional microphones of the first order, which are formed from the three omnidirectional microphones, are adjusted.
Figure imgaf001
EP04004215A 2003-03-11 2004-02-25 Automatic adjustment of a directional microphone system with at least three microphones Expired - Lifetime EP1465453B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10310579A DE10310579B4 (en) 2003-03-11 2003-03-11 Automatic microphone adjustment for a directional microphone system with at least three microphones
DE10310579 2003-03-11

Publications (3)

Publication Number Publication Date
EP1465453A2 EP1465453A2 (en) 2004-10-06
EP1465453A3 true EP1465453A3 (en) 2009-12-16
EP1465453B1 EP1465453B1 (en) 2011-01-26

Family

ID=32842150

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04004215A Expired - Lifetime EP1465453B1 (en) 2003-03-11 2004-02-25 Automatic adjustment of a directional microphone system with at least three microphones

Country Status (4)

Country Link
US (1) US7474755B2 (en)
EP (1) EP1465453B1 (en)
DE (2) DE10310579B4 (en)
DK (1) DK1465453T3 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004010867B3 (en) * 2004-03-05 2005-08-18 Siemens Audiologische Technik Gmbh Matching phases of microphones of hearing aid directional microphone involves matching second signal level to first by varying transition time of output signal from microphone without taking into account sound source position information
EP1614528A1 (en) 2004-07-01 2006-01-11 Alcan Technology & Management Ltd. Process for manufacturing a packing material
US7542580B2 (en) * 2005-02-25 2009-06-02 Starkey Laboratories, Inc. Microphone placement in hearing assistance devices to provide controlled directivity
WO2007103037A2 (en) * 2006-03-01 2007-09-13 Softmax, Inc. System and method for generating a separated signal
DE102006049870B4 (en) * 2006-10-23 2016-05-19 Sivantos Gmbh Differential directional microphone system and hearing aid with such a differential directional microphone system
US8103030B2 (en) 2006-10-23 2012-01-24 Siemens Audiologische Technik Gmbh Differential directional microphone system and hearing aid device with such a differential directional microphone system
EP2115743A1 (en) * 2007-02-26 2009-11-11 QUALCOMM Incorporated Systems, methods, and apparatus for signal separation
US8160273B2 (en) * 2007-02-26 2012-04-17 Erik Visser Systems, methods, and apparatus for signal separation using data driven techniques
EP2071873B1 (en) * 2007-12-11 2017-05-03 Bernafon AG A hearing aid system comprising a matched filter and a measurement method
US8175291B2 (en) * 2007-12-19 2012-05-08 Qualcomm Incorporated Systems, methods, and apparatus for multi-microphone based speech enhancement
US8321214B2 (en) * 2008-06-02 2012-11-27 Qualcomm Incorporated Systems, methods, and apparatus for multichannel signal amplitude balancing
DE102008049086B4 (en) * 2008-09-26 2011-12-15 Siemens Medical Instruments Pte. Ltd. Hearing aid with a directional microphone system and method for operating such a hearing aid
US9648421B2 (en) * 2011-12-14 2017-05-09 Harris Corporation Systems and methods for matching gain levels of transducers
EP3629602A1 (en) * 2018-09-27 2020-04-01 Oticon A/s A hearing device and a hearing system comprising a multitude of adaptive two channel beamformers
US11303994B2 (en) * 2019-07-14 2022-04-12 Peiker Acustic Gmbh Reduction of sensitivity to non-acoustic stimuli in a microphone array
CN113689875B (en) * 2021-08-25 2024-02-06 湖南芯海聆半导体有限公司 Digital hearing aid-oriented double-microphone voice enhancement method and device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5463694A (en) * 1993-11-01 1995-10-31 Motorola Gradient directional microphone system and method therefor
EP0942627A2 (en) * 1998-03-09 1999-09-15 Siemens Audiologische Technik GmbH Hearing aid with a directional microphone system and method for operating the same
WO2000076268A2 (en) * 1999-06-02 2000-12-14 Siemens Audiologische Technik Gmbh Hearing aid device, comprising a directional microphone system and a method for operating a hearing aid device

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DK164349C (en) * 1989-08-22 1992-11-02 Oticon As HEARING DEVICE WITH BACKUP COMPENSATION
AT407815B (en) * 1990-07-13 2001-06-25 Viennatone Gmbh HEARING AID
US5515445A (en) * 1994-06-30 1996-05-07 At&T Corp. Long-time balancing of omni microphones
US5757933A (en) * 1996-12-11 1998-05-26 Micro Ear Technology, Inc. In-the-ear hearing aid with directional microphone system
DE19822021C2 (en) * 1998-05-15 2000-12-14 Siemens Audiologische Technik Hearing aid with automatic microphone adjustment and method for operating a hearing aid with automatic microphone adjustment
US6654468B1 (en) * 1998-08-25 2003-11-25 Knowles Electronics, Llc Apparatus and method for matching the response of microphones in magnitude and phase
DE19849739C2 (en) * 1998-10-28 2001-05-31 Siemens Audiologische Technik Adaptive method for correcting the microphones of a directional microphone system in a hearing aid and hearing aid
US6741713B1 (en) * 1998-12-17 2004-05-25 Sonionmicrotronic Nederlan B.V. Directional hearing device
DE19918883C1 (en) * 1999-04-26 2000-11-30 Siemens Audiologische Technik Obtaining directional microphone characteristic for hearing aid
DE60012316T2 (en) * 1999-04-28 2005-07-21 Gennum Corp., Burlington PROGRAMMABLE MULTI-MODE, MULTI-MICROPHONE SYSTEM
WO2001001732A1 (en) * 1999-06-24 2001-01-04 Tøpholm & Westermann APS Hearing aid with controllable directional characteristics
US6272229B1 (en) * 1999-08-03 2001-08-07 Topholm & Westermann Aps Hearing aid with adaptive matching of microphones
DE69904822T2 (en) * 1999-10-07 2003-11-06 Zlatan Ribic Method and arrangement for recording sound signals
US7092537B1 (en) * 1999-12-07 2006-08-15 Texas Instruments Incorporated Digital self-adapting graphic equalizer and method
JP2003527012A (en) * 2000-03-14 2003-09-09 オーディア テクノロジー インク Adaptive microphone matching in multi-microphone directional systems
DE10045197C1 (en) * 2000-09-13 2002-03-07 Siemens Audiologische Technik Operating method for hearing aid device or hearing aid system has signal processor used for reducing effect of wind noise determined by analysis of microphone signals
EP1356706A2 (en) * 2000-09-29 2003-10-29 Knowles Electronics, LLC Second order microphone array

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5463694A (en) * 1993-11-01 1995-10-31 Motorola Gradient directional microphone system and method therefor
EP0942627A2 (en) * 1998-03-09 1999-09-15 Siemens Audiologische Technik GmbH Hearing aid with a directional microphone system and method for operating the same
WO2000076268A2 (en) * 1999-06-02 2000-12-14 Siemens Audiologische Technik Gmbh Hearing aid device, comprising a directional microphone system and a method for operating a hearing aid device

Also Published As

Publication number Publication date
EP1465453B1 (en) 2011-01-26
DE10310579B4 (en) 2005-06-16
DK1465453T3 (en) 2011-05-16
US20040240683A1 (en) 2004-12-02
DE502004012137D1 (en) 2011-03-10
DE10310579A1 (en) 2004-09-23
US7474755B2 (en) 2009-01-06
EP1465453A2 (en) 2004-10-06

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