WO2001069968A3 - Adaptive microphone matching in multi-microphone directional system - Google Patents

Adaptive microphone matching in multi-microphone directional system Download PDF

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Publication number
WO2001069968A3
WO2001069968A3 PCT/US2001/008256 US0108256W WO0169968A3 WO 2001069968 A3 WO2001069968 A3 WO 2001069968A3 US 0108256 W US0108256 W US 0108256W WO 0169968 A3 WO0169968 A3 WO 0169968A3
Authority
WO
WIPO (PCT)
Prior art keywords
microphone
matching
approaches
sensitivities
adaptive
Prior art date
Application number
PCT/US2001/008256
Other languages
French (fr)
Other versions
WO2001069968A2 (en
Inventor
Hou Zuezhang
Original Assignee
Audia Technology Inc
Hou Zuezhang
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 Audia Technology Inc, Hou Zuezhang filed Critical Audia Technology Inc
Priority to AU4574001A priority Critical patent/AU4574001A/en
Priority to JP2001566588A priority patent/JP2003527012A/en
Priority to DE10195933T priority patent/DE10195933T1/en
Priority to AU2001245740A priority patent/AU2001245740B2/en
Publication of WO2001069968A2 publication Critical patent/WO2001069968A2/en
Publication of WO2001069968A3 publication Critical patent/WO2001069968A3/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
    • 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
    • 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

Abstract

Improved approaches to matching sensitivities of microphones in multi-microphone directional processing systems. These approaches operate to adaptively match microphone sensitivities so that directional noise suppression is robust. As a result, microphone sensitivities remain matched not only over time but also while in actual use. These approaches are particularly useful for hearing aid applications in which directional noise suppression is important.
PCT/US2001/008256 2000-03-14 2001-03-14 Adaptive microphone matching in multi-microphone directional system WO2001069968A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU4574001A AU4574001A (en) 2000-03-14 2001-03-14 Adaptive microphone matching in multi-microphone directional system
JP2001566588A JP2003527012A (en) 2000-03-14 2001-03-14 Adaptive microphone matching in multi-microphone directional systems
DE10195933T DE10195933T1 (en) 2000-03-14 2001-03-14 Adaptive microphone adjustment in a directional system with several microphones
AU2001245740A AU2001245740B2 (en) 2000-03-14 2001-03-14 Adaptive microphone matching in multi-microphone directional system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US18928200P 2000-03-14 2000-03-14
US60/189,282 2000-03-14

Publications (2)

Publication Number Publication Date
WO2001069968A2 WO2001069968A2 (en) 2001-09-20
WO2001069968A3 true WO2001069968A3 (en) 2002-10-10

Family

ID=22696680

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/008256 WO2001069968A2 (en) 2000-03-14 2001-03-14 Adaptive microphone matching in multi-microphone directional system

Country Status (6)

Country Link
US (1) US7155019B2 (en)
JP (1) JP2003527012A (en)
CN (1) CN1418448A (en)
AU (2) AU4574001A (en)
DE (1) DE10195933T1 (en)
WO (1) WO2001069968A2 (en)

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Also Published As

Publication number Publication date
AU4574001A (en) 2001-09-24
WO2001069968A2 (en) 2001-09-20
CN1418448A (en) 2003-05-14
AU2001245740B2 (en) 2005-04-14
DE10195933T1 (en) 2003-04-30
US7155019B2 (en) 2006-12-26
JP2003527012A (en) 2003-09-09
US20020034310A1 (en) 2002-03-21

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