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EP1469702A3 - Feedback suppression - Google Patents

Feedback suppression Download PDF

Info

Publication number
EP1469702A3
EP1469702A3 EP04006073A EP04006073A EP1469702A3 EP 1469702 A3 EP1469702 A3 EP 1469702A3 EP 04006073 A EP04006073 A EP 04006073A EP 04006073 A EP04006073 A EP 04006073A EP 1469702 A3 EP1469702 A3 EP 1469702A3
Authority
EP
European Patent Office
Prior art keywords
feedback
feedback suppression
suppression
path
beamformer
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
EP04006073A
Other languages
German (de)
French (fr)
Other versions
EP1469702B1 (en
EP1469702A2 (en
Inventor
Hans-Ueli Roeck
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.)
Sonova Holding AG
Original Assignee
Phonak AG
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 Phonak AG filed Critical Phonak AG
Priority to EP04006073.3A priority Critical patent/EP1469702B1/en
Priority to DK04006073.3T priority patent/DK1469702T3/en
Publication of EP1469702A2 publication Critical patent/EP1469702A2/en
Publication of EP1469702A3 publication Critical patent/EP1469702A3/en
Application granted granted Critical
Publication of EP1469702B1 publication Critical patent/EP1469702B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/45—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback
    • H04R25/453—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback electronically

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Amplifiers (AREA)

Abstract

Feedback suppression is performed at a hearing device with a controllable beamformer (12) and a feedback compensator path (18) in that the adaptation rate of acoustical/electrical conversion including beamforming is controlled in dependency of the gain along the feedback compensating signal path (18).
EP04006073.3A 2004-03-15 2004-03-15 Feedback suppression Expired - Lifetime EP1469702B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP04006073.3A EP1469702B1 (en) 2004-03-15 2004-03-15 Feedback suppression
DK04006073.3T DK1469702T3 (en) 2004-03-15 2004-03-15 Feedback suppression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04006073.3A EP1469702B1 (en) 2004-03-15 2004-03-15 Feedback suppression

Publications (3)

Publication Number Publication Date
EP1469702A2 EP1469702A2 (en) 2004-10-20
EP1469702A3 true EP1469702A3 (en) 2004-11-17
EP1469702B1 EP1469702B1 (en) 2016-11-23

Family

ID=32893043

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04006073.3A Expired - Lifetime EP1469702B1 (en) 2004-03-15 2004-03-15 Feedback suppression

Country Status (2)

Country Link
EP (1) EP1469702B1 (en)
DK (1) DK1469702T3 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1949755B1 (en) 2005-10-11 2010-05-12 Widex A/S Hearing aid and a method of processing input signals in a hearing aid
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
DE102009060094B4 (en) 2009-12-22 2013-03-14 Siemens Medical Instruments Pte. Ltd. Method and hearing aid for feedback detection and suppression with a directional microphone
DK2439958T3 (en) 2010-10-06 2013-08-12 Oticon As Method for Determining Parameters of an Adaptive Sound Processing Algorithm and a Sound Processing System
US20130294616A1 (en) * 2010-12-20 2013-11-07 Phonak Ag Method and system for speech enhancement in a room
WO2013007309A1 (en) * 2011-07-14 2013-01-17 Phonak Ag Speech enhancement system and method
EP3249955B1 (en) * 2016-05-23 2019-08-28 Oticon A/s A configurable hearing aid comprising a beamformer filtering unit and a gain unit
EP3525488B1 (en) * 2018-02-09 2020-10-14 Oticon A/s A hearing device comprising a beamformer filtering unit for reducing feedback

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0656737A1 (en) * 1993-11-10 1995-06-07 Phonak Ag Hearing aid with cancellation of acoustic feedback
WO2000019605A2 (en) * 1998-09-30 2000-04-06 House Ear Institute Band-limited adaptive feedback canceller for hearing aids
WO2000033634A2 (en) * 2000-03-31 2000-06-15 Phonak Ag Method for providing the transmission characteristics of a microphone arrangement and microphone arrangement
EP1080606A1 (en) * 1998-05-19 2001-03-07 Audiologic Hearing Systems, L.P. Feedback cancellation improvements

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0656737A1 (en) * 1993-11-10 1995-06-07 Phonak Ag Hearing aid with cancellation of acoustic feedback
EP1080606A1 (en) * 1998-05-19 2001-03-07 Audiologic Hearing Systems, L.P. Feedback cancellation improvements
WO2000019605A2 (en) * 1998-09-30 2000-04-06 House Ear Institute Band-limited adaptive feedback canceller for hearing aids
WO2000033634A2 (en) * 2000-03-31 2000-06-15 Phonak Ag Method for providing the transmission characteristics of a microphone arrangement and microphone arrangement

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
HERBORDT W ET AL: "Computationally Efficient Frequency-Domain Combination of Acoustic Echo Cancellation and Robust Adaptive Beamforming", PROCEEDINGS EUROSPEECH, vol. 2, September 2001 (2001-09-01), AALBORG, DANMARK, pages 1001 - 1004, XP007004503 *
HOSHUYAMA O ET AL: "A ROBUST ADAPTIVE BEAMFORMER FOR MICROPHONE ARRAYS WITH A BLOCKING MATRIX USING CONSTRAINED ADAPTIVE FILTERS", IEEE TRANSACTIONS ON SIGNAL PROCESSING, IEEE, INC. NEW YORK, US, vol. 47, no. 10, October 1999 (1999-10-01), pages 2677 - 2684, XP000947154, ISSN: 1053-587X *
HSIANG-FENG CHI, SHAWN X. GAO, SIGFRID D. SOLI, ABEER ALWAN: "Band-limited feedback cancellation with a modified filtered-X LMS algorithm for hearing aids", SPEECH COMMUNICATION, vol. 39, no. 1-2, January 2003 (2003-01-01), ELSEVIER SCIENCE, pages 147 - 161, XP002295470 *
MAXWELL J A ET AL: "REDUCING ACOUSTIC FEEDBACK IN HEARING AIDS", IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING, IEEE INC. NEW YORK, US, vol. 3, no. 4, 1 July 1995 (1995-07-01), pages 304 - 313, XP000633074, ISSN: 1063-6676 *

Also Published As

Publication number Publication date
EP1469702B1 (en) 2016-11-23
EP1469702A2 (en) 2004-10-20
DK1469702T3 (en) 2017-02-13

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