GB2387499B - Switched-geometry microphone array arrangement and method - Google Patents

Switched-geometry microphone array arrangement and method

Info

Publication number
GB2387499B
GB2387499B GB0208219A GB0208219A GB2387499B GB 2387499 B GB2387499 B GB 2387499B GB 0208219 A GB0208219 A GB 0208219A GB 0208219 A GB0208219 A GB 0208219A GB 2387499 B GB2387499 B GB 2387499B
Authority
GB
United Kingdom
Prior art keywords
geometry
switched
microphone array
array arrangement
arrangement
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.)
Expired - Fee Related
Application number
GB0208219A
Other versions
GB2387499A (en
GB0208219D0 (en
Inventor
David Pearce
James Rex
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Priority to GB0208219A priority Critical patent/GB2387499B/en
Publication of GB0208219D0 publication Critical patent/GB0208219D0/en
Priority to PCT/EP2003/000789 priority patent/WO2003086009A1/en
Priority to AU2003205682A priority patent/AU2003205682A1/en
Publication of GB2387499A publication Critical patent/GB2387499A/en
Application granted granted Critical
Publication of GB2387499B publication Critical patent/GB2387499B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers microphones
    • 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
    • H04R2201/401—2D or 3D arrays 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
    • 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)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
GB0208219A 2002-04-10 2002-04-10 Switched-geometry microphone array arrangement and method Expired - Fee Related GB2387499B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB0208219A GB2387499B (en) 2002-04-10 2002-04-10 Switched-geometry microphone array arrangement and method
PCT/EP2003/000789 WO2003086009A1 (en) 2002-04-10 2003-01-27 Switched-geometry microphone array arrangement and method for processing outputs from a plurality of microphones
AU2003205682A AU2003205682A1 (en) 2002-04-10 2003-01-27 Switched-geometry microphone array arrangement and method for processing outputs from a plurality of microphones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0208219A GB2387499B (en) 2002-04-10 2002-04-10 Switched-geometry microphone array arrangement and method

Publications (3)

Publication Number Publication Date
GB0208219D0 GB0208219D0 (en) 2002-05-22
GB2387499A GB2387499A (en) 2003-10-15
GB2387499B true GB2387499B (en) 2004-05-26

Family

ID=9934558

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0208219A Expired - Fee Related GB2387499B (en) 2002-04-10 2002-04-10 Switched-geometry microphone array arrangement and method

Country Status (3)

Country Link
AU (1) AU2003205682A1 (en)
GB (1) GB2387499B (en)
WO (1) WO2003086009A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE550886T1 (en) * 2006-09-26 2012-04-15 Epcos Pte Ltd CALIBRATED MICROELECTROMECHANICAL MICROPHONE
US8923529B2 (en) 2008-08-29 2014-12-30 Biamp Systems Corporation Microphone array system and method for sound acquisition
US8041054B2 (en) * 2008-10-31 2011-10-18 Continental Automotive Systems, Inc. Systems and methods for selectively switching between multiple microphones
TW201225689A (en) * 2010-12-03 2012-06-16 Yare Technologies Inc Conference system capable of independently adjusting audio input
US11290814B1 (en) * 2020-12-15 2022-03-29 Valeo North America, Inc. Method, apparatus, and computer-readable storage medium for modulating an audio output of a microphone array

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3007585A1 (en) * 1980-02-28 1981-09-03 Polygram Gmbh, 2000 Hamburg Sound recording and reproduction system - combines numerous miniature piezoelectric transducers to form microphone and loudspeaker
US5848170A (en) * 1995-12-22 1998-12-08 France Telecom Acoustic antenna for computer workstation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5952996A (en) * 1982-09-20 1984-03-27 Nippon Telegr & Teleph Corp <Ntt> Sound device of variable directivity
US5828768A (en) * 1994-05-11 1998-10-27 Noise Cancellation Technologies, Inc. Multimedia personal computer with active noise reduction and piezo speakers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3007585A1 (en) * 1980-02-28 1981-09-03 Polygram Gmbh, 2000 Hamburg Sound recording and reproduction system - combines numerous miniature piezoelectric transducers to form microphone and loudspeaker
US5848170A (en) * 1995-12-22 1998-12-08 France Telecom Acoustic antenna for computer workstation

Also Published As

Publication number Publication date
GB2387499A (en) 2003-10-15
WO2003086009A1 (en) 2003-10-16
GB0208219D0 (en) 2002-05-22
AU2003205682A1 (en) 2003-10-20

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20080410