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AU9089091A - Acoustic device - Google Patents

Acoustic device

Info

Publication number
AU9089091A
AU9089091A AU90890/91A AU9089091A AU9089091A AU 9089091 A AU9089091 A AU 9089091A AU 90890/91 A AU90890/91 A AU 90890/91A AU 9089091 A AU9089091 A AU 9089091A AU 9089091 A AU9089091 A AU 9089091A
Authority
AU
Australia
Prior art keywords
acoustic device
acoustic
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.)
Abandoned
Application number
AU90890/91A
Inventor
Dominique Dubournais
Frederic Zurcher
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.)
Prescom
Original Assignee
Prescom
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 Prescom filed Critical Prescom
Publication of AU9089091A publication Critical patent/AU9089091A/en
Abandoned 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
    • H04R27/00—Public address systems
    • 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
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/342—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for 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
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
AU90890/91A 1990-12-05 1991-12-04 Acoustic device Abandoned AU9089091A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9015208 1990-12-05
FR9015208A FR2670351B1 (en) 1990-12-05 1990-12-05 SOUND RECORDING AND RESTITUTING APPARATUS.

Publications (1)

Publication Number Publication Date
AU9089091A true AU9089091A (en) 1992-07-08

Family

ID=9402906

Family Applications (1)

Application Number Title Priority Date Filing Date
AU90890/91A Abandoned AU9089091A (en) 1990-12-05 1991-12-04 Acoustic device

Country Status (3)

Country Link
AU (1) AU9089091A (en)
FR (1) FR2670351B1 (en)
WO (1) WO1992010917A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2702918B1 (en) * 1993-03-19 1995-05-12 Prescom Sarl Sound recording and reproducing apparatus, and its application to audio conference.
US9641919B1 (en) 2014-09-30 2017-05-02 Amazon Technologies, Inc. Audio assemblies for electronic devices
US9574762B1 (en) * 2014-09-30 2017-02-21 Amazon Technologies, Inc. Light assemblies for electronic devices containing audio circuitry
CN110225426B (en) * 2019-07-12 2025-09-05 谢丽娜 A noise-canceling microphone

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2358800A1 (en) * 1976-07-16 1978-02-10 Pontet Robert Sound pick=up for telephone conference - has omnidirectional microphone at focal point of parabolic recess of plaster or fibre glass block
CA1050154A (en) * 1977-01-14 1979-03-06 Conrad D. Lafrance Telephone conferencing apparatus
US4361736A (en) * 1979-12-07 1982-11-30 Long Edward M Pressure recording process and device
US4620317A (en) * 1984-04-05 1986-10-28 Shure Brothers, Inc. Tabletop speaker assembly
FR2617660B1 (en) * 1987-06-30 1990-06-08 Larvor Rene SOUND RECORDING AND RESTITUTION DEVICE, PARTICULARLY FOR AUDIO-CONFERENCES

Also Published As

Publication number Publication date
WO1992010917A1 (en) 1992-06-25
FR2670351A1 (en) 1992-06-12
FR2670351B1 (en) 1997-04-30

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