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WO2009034536A9 - Audio activity detection - Google Patents

Audio activity detection Download PDF

Info

Publication number
WO2009034536A9
WO2009034536A9 PCT/IB2008/053666 IB2008053666W WO2009034536A9 WO 2009034536 A9 WO2009034536 A9 WO 2009034536A9 IB 2008053666 W IB2008053666 W IB 2008053666W WO 2009034536 A9 WO2009034536 A9 WO 2009034536A9
Authority
WO
WIPO (PCT)
Prior art keywords
signal
detection
adaptive filter
audio activity
audio
Prior art date
Application number
PCT/IB2008/053666
Other languages
French (fr)
Other versions
WO2009034536A3 (en
WO2009034536A2 (en
Inventor
Sriram Srinivasan
David A. C. M. Roovers
Cornelis P. Janse
Valery S. Kot
Original Assignee
Koninklijke Philips Electronics N.V.
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 Koninklijke Philips Electronics N.V. filed Critical Koninklijke Philips Electronics N.V.
Publication of WO2009034536A2 publication Critical patent/WO2009034536A2/en
Publication of WO2009034536A3 publication Critical patent/WO2009034536A3/en
Publication of WO2009034536A9 publication Critical patent/WO2009034536A9/en

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
    • H04R25/40—Arrangements for obtaining a desired directivity characteristic

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)
  • Circuit For Audible Band Transducer (AREA)

Abstract

An audio activity detection apparatus comprises a first sound sensor (101) having a substantiallyomni-directionalsensitivity and providing a first signal and a second sound sensor (101, 103, 105) having a directional sensitivity and providing a second signal. A first adaptive filter (107) filters the second signal to generate a first filtered signal and a first adaptation unit (111) adapts the first adaptive filter (107) to reduce a difference between the first filtered signal and the first signal. A detection unit (113) detects audio activity in response to at least one filter coefficient of the first adaptive filter (107). The invention may allow improved audio detection in many scenarios and may in particular provide improved audio detection for hearing aids using a plurality of microphones. Decorrelated detections of dominant interferers and desired signals may be achieved.
PCT/IB2008/053666 2007-09-14 2008-09-11 Audio activity detection WO2009034536A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP07116406.5 2007-09-14
EP07116406 2007-09-14

Publications (3)

Publication Number Publication Date
WO2009034536A2 WO2009034536A2 (en) 2009-03-19
WO2009034536A3 WO2009034536A3 (en) 2009-08-20
WO2009034536A9 true WO2009034536A9 (en) 2009-11-05

Family

ID=40452645

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/053666 WO2009034536A2 (en) 2007-09-14 2008-09-11 Audio activity detection

Country Status (1)

Country Link
WO (1) WO2009034536A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050058313A1 (en) 2003-09-11 2005-03-17 Victorian Thomas A. External ear canal voice detection
US8477973B2 (en) 2009-04-01 2013-07-02 Starkey Laboratories, Inc. Hearing assistance system with own voice detection
US9219964B2 (en) 2009-04-01 2015-12-22 Starkey Laboratories, Inc. Hearing assistance system with own voice detection
EP2486567A1 (en) 2009-10-09 2012-08-15 Dolby Laboratories Licensing Corporation Automatic generation of metadata for audio dominance effects
WO2012098427A1 (en) * 2011-01-18 2012-07-26 Nokia Corporation An audio scene selection apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1018854A1 (en) * 1999-01-05 2000-07-12 Oticon A/S A method and a device for providing improved speech intelligibility
JP4145323B2 (en) * 2003-09-19 2008-09-03 ヴェーデクス・アクティーセルスカプ Directivity control method for sound reception characteristics of hearing aid and signal processing apparatus for hearing aid having controllable directivity characteristics
DE102005032274B4 (en) * 2005-07-11 2007-05-10 Siemens Audiologische Technik Gmbh Hearing apparatus and corresponding method for eigenvoice detection

Also Published As

Publication number Publication date
WO2009034536A3 (en) 2009-08-20
WO2009034536A2 (en) 2009-03-19

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