DE69431179D1 - Adaptive Mikrophongruppierung - Google Patents

Adaptive Mikrophongruppierung

Info

Publication number
DE69431179D1
DE69431179D1 DE69431179T DE69431179T DE69431179D1 DE 69431179 D1 DE69431179 D1 DE 69431179D1 DE 69431179 T DE69431179 T DE 69431179T DE 69431179 T DE69431179 T DE 69431179T DE 69431179 D1 DE69431179 D1 DE 69431179D1
Authority
DE
Germany
Prior art keywords
adaptive microphone
grouping
microphone grouping
adaptive
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.)
Revoked
Application number
DE69431179T
Other languages
English (en)
Other versions
DE69431179T2 (de
Inventor
Juergen Cezanne
Gary Wayne Elko
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.)
AT&T Corp
Original Assignee
AT&T Corp
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22527190&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69431179(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by AT&T Corp filed Critical AT&T Corp
Application granted granted Critical
Publication of DE69431179D1 publication Critical patent/DE69431179D1/de
Publication of DE69431179T2 publication Critical patent/DE69431179T2/de
Anticipated expiration legal-status Critical
Revoked 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
    • 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
    • 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
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/20—Processing of the output signals of the acoustic transducers of an array for obtaining a desired directivity characteristic
    • H04R2430/21—Direction finding using differential microphone array [DMA]

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)
DE69431179T 1993-11-05 1994-10-26 Adaptive Mikrophongruppierung Revoked DE69431179T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/148,750 US5473701A (en) 1993-11-05 1993-11-05 Adaptive microphone array

Publications (2)

Publication Number Publication Date
DE69431179D1 true DE69431179D1 (de) 2002-09-19
DE69431179T2 DE69431179T2 (de) 2003-02-13

Family

ID=22527190

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69431179T Revoked DE69431179T2 (de) 1993-11-05 1994-10-26 Adaptive Mikrophongruppierung

Country Status (4)

Country Link
US (1) US5473701A (de)
EP (1) EP0652686B1 (de)
CA (1) CA2117931C (de)
DE (1) DE69431179T2 (de)

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US5473701A (en) 1995-12-05
CA2117931A1 (en) 1995-05-06
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DE69431179T2 (de) 2003-02-13
EP0652686A1 (de) 1995-05-10
EP0652686B1 (de) 2002-08-14

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