EP0362097A1 - Rundstrahlende elektroakustische Lautsprecherbox - Google Patents

Rundstrahlende elektroakustische Lautsprecherbox Download PDF

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Publication number
EP0362097A1
EP0362097A1 EP89450012A EP89450012A EP0362097A1 EP 0362097 A1 EP0362097 A1 EP 0362097A1 EP 89450012 A EP89450012 A EP 89450012A EP 89450012 A EP89450012 A EP 89450012A EP 0362097 A1 EP0362097 A1 EP 0362097A1
Authority
EP
European Patent Office
Prior art keywords
box
transducer
revolution
omnidirectional
acoustic enclosure
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.)
Ceased
Application number
EP89450012A
Other languages
English (en)
French (fr)
Inventor
Alain Barbe
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.)
MUTEK SARL en liquidation
Original Assignee
MUTEK SARL en liquidation
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 MUTEK SARL en liquidation filed Critical MUTEK SARL en liquidation
Publication of EP0362097A1 publication Critical patent/EP0362097A1/de
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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

Definitions

  • the present invention relates to omnidirectional electro-acoustic speakers.
  • Omnidirectional electro-acoustic speakers are known, such as those described in the Certificate of Utility FR 2 242 830 comprising integral with circular plates the treble, medium and bass transducers arranged coaxially, the treble and medium transducers are oriented their membranes facing each other, said membranes being separated by a transverse circular partition generating with the holding plates two corridors whose periphery is open, each intended to diffuse the sound produced by the corresponding transducer in an omnidirectional manner, thanks to a diffuser arranged on each face of the partition having a convex shape of revolution aligned with the axis of the transducers.
  • the sound produced by the transducers thus diffused is of mediocre quality taking into account the mode of diffusion causing reflections on the plates and the partition of uncontrolled separation.
  • the object of the invention is to overcome the drawback previously explained.
  • the subject of the invention is an omnidirectional electro-acoustic enclosure comprising two bass / mid and treble transducers arranged coaxially with their membranes facing each other held on boxes, said enclosure is characterized in that the transducers are held one on the end of the extensions of its box and the other at the end of the box in the form of a trunk of regular pyramid or cone of revolution generating reflective surfaces making it possible to diffuse each part of the sounds emitted by the opposite transducer horizontally , the other part of the said sounds being dispersed horizontally by means of a deflec single sensor of convex shape of revolution arranged in alignment and between the transducers.
  • an enclosure according to the invention comprises an upper box 1 of parallelepiped shape whose faces at its lower part are extended by a regular pyramid trunk 2 at the end 3 and at the center of which the transducer 4 is held bass and midrange, the box 1 and its extension 2 constituting the tuning volume of the transducer 4 known per se.
  • the casing 1 Opposite the casing 1 is disposed a lower casing 5, the latter has a shape in a regular pyramid trunk with four sides whose axis extends the axis of the upper pyramid trunk 2 and that of the casing 1, the top or small base 6 oriented towards the transducer 4 receives the treble transducer 7, said transducers 4 and 7 are arranged coaxially with their membranes facing each other, said boxes 1 and 5 are kept spaced apart by means of uprights 8 for example.
  • a diffuser 9 of convex shape of revolution of piriform type is maintained in known manner as an extension of the axes of the transducers 4 and 7, it has an exponential conical shape of revolution 10 oriented towards the treble transducer 7 and a parabolic shape 11 oriented towards the bass / midrange transducer 4, the part of the sounds emitted by the transducers 4 and 7 and not diffused by the diffuser 9 is in turn reflected by the faces 12 of the lower box 5 for the bass / midrange and by the faces 13 of the extension 2 for the treble, the dispersion taking place horizontally around the periphery of the enclosure.
  • the base of the boxes 1 and 5 has a circular shape
  • the box 1 constituting the tuning volume of the bass / mid-range transducer 4 is cylindrical and its extension a truncated cone of revolution 15
  • the opposite box 5 supporting the transducer 7 is also a trunk of cone of revolution 17.
  • the base of the opposite caissons can have different regular shapes passing from the equilateral, square, polygonal triangular shape to the circular shape, the extensions corresponding to said bases being regular pyramid trunks or trunks of cone of revolution.
  • the opposite boxes can advantageously have different bases, in particular a square base for the upper box and a circular base for the lower box.

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Building Environments (AREA)
EP89450012A 1988-09-29 1989-09-29 Rundstrahlende elektroakustische Lautsprecherbox Ceased EP0362097A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8812930 1988-09-29
FR8812930A FR2637147B1 (fr) 1988-09-29 1988-09-29 Enceinte electro-acoustique omnidirectionnelle

Publications (1)

Publication Number Publication Date
EP0362097A1 true EP0362097A1 (de) 1990-04-04

Family

ID=9370639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89450012A Ceased EP0362097A1 (de) 1988-09-29 1989-09-29 Rundstrahlende elektroakustische Lautsprecherbox

Country Status (4)

Country Link
US (1) US5086871A (de)
EP (1) EP0362097A1 (de)
JP (1) JPH02223297A (de)
FR (1) FR2637147B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992007449A1 (en) * 1990-10-17 1992-04-30 Canon Research Centre Europe Ltd Sound output device
AU653027B2 (en) * 1991-06-12 1994-09-15 Sonic Systems, Inc. Hemispherically wide-radiating-angle loudspeaker system
US10341761B2 (en) 2017-02-17 2019-07-02 Tymphany Hk Limited Acoustic waveguide for audio speaker

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5525767A (en) * 1994-04-22 1996-06-11 Fields; Walter High-performance sound imaging system
US5657392A (en) * 1995-11-02 1997-08-12 Electronique Messina Inc. Multi-way speaker with a cabinet defining a midrange driver pyramidal compartment
DE29705406U1 (de) * 1997-03-25 1997-06-12 Bünzow, Hans-Dieter, Dipl.-Ing. (FH), 91054 Erlangen Gehäuse für einen Lautsprecher
US5821470A (en) * 1997-04-08 1998-10-13 Meyer Sound Laboratories Incorporated Broadband acoustical transmitting system
US5847331A (en) * 1997-10-09 1998-12-08 Vollmer; Edward Omnidirectional loudspeaker
US6152257A (en) * 1998-05-05 2000-11-28 Thomas L. Denham Audio speaker
USD408035S (en) * 1998-06-20 1999-04-13 Denham Thomas L Audio speaker
US6431308B1 (en) 1998-12-11 2002-08-13 Edward G. Vollmer High fidelity small omnidirectional loudspeaker
JP2004072140A (ja) * 2002-08-01 2004-03-04 Hiroshi China 全指向性バックロードホーン型スピーカー
US8068618B2 (en) * 2006-01-09 2011-11-29 Vollmer Edward G Spherical loudspeaker for omnipresent sound reproduction
JP6121699B2 (ja) * 2012-11-28 2017-04-26 シャープ株式会社 スピーカシステム、制御方法、プログラム、および、記録媒体
WO2014144968A1 (en) 2013-03-15 2014-09-18 O'polka Richard Portable sound system
US10149058B2 (en) 2013-03-15 2018-12-04 Richard O'Polka Portable sound system
USD740784S1 (en) 2014-03-14 2015-10-13 Richard O'Polka Portable sound device
JP6612344B2 (ja) * 2015-06-30 2019-11-27 シャープ株式会社 スピーカシステム、表示装置、及びテレビジョン受像機
US11277684B2 (en) * 2019-01-17 2022-03-15 Onkyo Corporation Diffuser
JP7680888B2 (ja) * 2021-06-04 2025-05-21 シャープ株式会社 表示装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3816672A (en) * 1970-07-06 1974-06-11 K Peter Sound reproduction system
LU69645A1 (de) * 1973-08-30 1974-07-10
BE894728A (nl) * 1982-10-19 1983-02-14 Meyer Rudy De Luidsprekerkast
WO1985001176A1 (en) * 1983-09-06 1985-03-14 Henry Oliver Wolcott Loudspeaker structure
US4588042A (en) * 1984-07-23 1986-05-13 Palet Timothy J Parabolic speaker

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4200170A (en) * 1977-08-29 1980-04-29 Williams John H Jr Pyramid speaker assembly
IT1086464B (it) * 1977-09-06 1985-05-28 Selmin Sas Metodo e dispositivi per l'irradiazione omnidirezionale di onde acustiche

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3816672A (en) * 1970-07-06 1974-06-11 K Peter Sound reproduction system
LU69645A1 (de) * 1973-08-30 1974-07-10
BE894728A (nl) * 1982-10-19 1983-02-14 Meyer Rudy De Luidsprekerkast
WO1985001176A1 (en) * 1983-09-06 1985-03-14 Henry Oliver Wolcott Loudspeaker structure
US4588042A (en) * 1984-07-23 1986-05-13 Palet Timothy J Parabolic speaker

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992007449A1 (en) * 1990-10-17 1992-04-30 Canon Research Centre Europe Ltd Sound output device
AU653027B2 (en) * 1991-06-12 1994-09-15 Sonic Systems, Inc. Hemispherically wide-radiating-angle loudspeaker system
US10341761B2 (en) 2017-02-17 2019-07-02 Tymphany Hk Limited Acoustic waveguide for audio speaker

Also Published As

Publication number Publication date
FR2637147B1 (fr) 1990-12-28
FR2637147A1 (fr) 1990-03-30
US5086871A (en) 1992-02-11
JPH02223297A (ja) 1990-09-05

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