EP0127558A1 - Akustisches Gehäuse von "Baffle"-Typ mit hohem Wirkungsgrad - Google Patents

Akustisches Gehäuse von "Baffle"-Typ mit hohem Wirkungsgrad Download PDF

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Publication number
EP0127558A1
EP0127558A1 EP84450010A EP84450010A EP0127558A1 EP 0127558 A1 EP0127558 A1 EP 0127558A1 EP 84450010 A EP84450010 A EP 84450010A EP 84450010 A EP84450010 A EP 84450010A EP 0127558 A1 EP0127558 A1 EP 0127558A1
Authority
EP
European Patent Office
Prior art keywords
walls
enclosure
wave
wall
horn
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.)
Withdrawn
Application number
EP84450010A
Other languages
English (en)
French (fr)
Inventor
Marie Hélène Verrier épouse Murillo
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.)
Nouvelle International Multison Sa Ste
Original Assignee
Nouvelle International Multison Sa Ste
Verrier Epouse Murillo Marie Helene
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 Nouvelle International Multison Sa Ste, Verrier Epouse Murillo Marie Helene filed Critical Nouvelle International Multison Sa Ste
Publication of EP0127558A1 publication Critical patent/EP0127558A1/de
Withdrawn legal-status Critical Current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
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2861—Enclosures comprising vibrating or resonating arrangements using a back-loaded horn
    • H04R1/2865—Enclosures comprising vibrating or resonating arrangements using a back-loaded horn for loudspeaker transducers
    • 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
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns

Definitions

  • the present invention relates to a loudspeaker of the high efficiency baffle type.
  • the object of the present invention is to offer a solution to the problem posed.
  • the enclosure comprises one or more speakers mounted on a wall separating the front wave and the rear wave, said wall possibly being the front wall of the box.
  • the box is formed behind the loudspeaker a pavilion or duct with increasing section according to an exponential growth law, the said duct being folded back on itself.
  • On either side of the front wall are arranged at least two curved vertical walls with increasing spacing according to an exponential growth law.
  • the curved vertical walls are joined by horizontal walls or partitions.
  • One of the horizontal partitions is arranged between the loudspeakers and the outlet of the rear roof and the others at each lower and upper end, of the vertical walls.
  • This arrangement of the invention makes it possible to constitute an exponential horn coupled to the front wave of the loudspeakers, a short horn intended for high medium and high frequencies of the spectrum, for example above 150 HZ.
  • This arrangement of the invention also makes it possible to extend the exponential growth of the rear pavilion, the walls of which conform to the law.
  • This much longer flag has a high efficiency in the lower part of the spectrum, for example for frequencies below 150 HZ.
  • the walls constituting the said pavilions are removably mounted and / or articulated on the enclosure.
  • the enclosure according to the invention is constituted in a known manner by a box preferably of rectangular parallelepiped shape.
  • a wall 1 which in the exemplary embodiment shown is the front vertical wall but which may be an internal wall of the enclosure receives one or more sound transducers or speakers 2 with a membrane.
  • the wall 1 performs in known manner the separation function of the front wave emitted by vibration of the membrane and the rear wave. Behind the loudspeaker or loudspeakers 2 is produced a compression chamber 3 of the rear wave and providing a groove for the passage of the wave in a duct or pavilion 4.
  • the pavilion 4 is of the exponential type folded back to lead to the front wall under the loudspeakers 2.
  • the sections of the pavilion 4 are increasing, obeying an exponential or hyperbolic or conical law of growth, from the vent of communication with the compression chamber to the last section at the front wall.
  • Vertical walls or flaps 5 are disposed respectively on either side of the front wall 1 and in the extension of the latter on either side of the direction of propagation of the front and rear sound waves.
  • the walls 5 are curved and separate from one another so symmetrical from the front wall so as to define a succession of increasing sections according to a law of growth, preferably exponential or hyperbolic or conical.
  • Horizontal partitions 6 join said walls and the front wall and a horizontal wall 6 constitutes a separation between the loudspeakers, that is to say the front wave, and the pavilion 4 that is to say the back wave.
  • an exponential horn is formed, coupled to the front wave and by arrangement of the partition 6 and said walls 5, the law of exponential growth of the horn 4 is extended.
  • the walls 5 as described can be arranged either at the level of the output of the front wave, that is to say on either side of the loudspeakers, or at the level of the wave rear that is to say of the last section of the roof 4 or as shown at the level of the two.
  • each of the walls 5 can be made up of two parts 5A and 5B capable of being set up independently of one another.
  • the walls 5 and the partitions 6 are provided with means making it possible to fix them in a removable manner to the box of the enclosure and between them.
  • the walls 5 and possibly the partition walls 6 are hinged to the box so as to be able to be folded against the sides of the enclosure which makes it possible to facilitate the transport of said enclosure. It goes without saying that the enclosure and the walls 5 and 6 are made of all suitable materials.

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)
EP84450010A 1983-04-21 1984-04-09 Akustisches Gehäuse von "Baffle"-Typ mit hohem Wirkungsgrad Withdrawn EP0127558A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8306876 1983-04-21
FR8306876A FR2544949B1 (fr) 1983-04-21 1983-04-21 Enceinte acoustique du type baffle a rendement eleve

Publications (1)

Publication Number Publication Date
EP0127558A1 true EP0127558A1 (de) 1984-12-05

Family

ID=9288244

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84450010A Withdrawn EP0127558A1 (de) 1983-04-21 1984-04-09 Akustisches Gehäuse von "Baffle"-Typ mit hohem Wirkungsgrad

Country Status (3)

Country Link
EP (1) EP0127558A1 (de)
ES (1) ES279007Y (de)
FR (1) FR2544949B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2435729A (en) * 2006-03-03 2007-09-05 Mark Treanor A slot-loaded loudspeaker enclosure with curved walls

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4100708C2 (de) * 1991-01-11 1996-02-08 Robert Schwanitz Kugelförmiges Lautsprechergehäuse mit Horntrichter

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1070230B (de) *
DE921994C (de) * 1953-02-19 1955-01-07 Zeiss Ikon Ag Zerlegbares Lautsprechergehaeuse mit Exponentialschallfuehrung
US2866513A (en) * 1952-11-24 1958-12-30 Edward V Bracken Apparatus for generating sound
US3866712A (en) * 1974-04-19 1975-02-18 James A Carruthers Collapsible speaker extension
GB2066619A (en) * 1979-12-18 1981-07-08 Pearce P J Loudspeaker cabinet

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1070230B (de) *
US2866513A (en) * 1952-11-24 1958-12-30 Edward V Bracken Apparatus for generating sound
DE921994C (de) * 1953-02-19 1955-01-07 Zeiss Ikon Ag Zerlegbares Lautsprechergehaeuse mit Exponentialschallfuehrung
US3866712A (en) * 1974-04-19 1975-02-18 James A Carruthers Collapsible speaker extension
GB2066619A (en) * 1979-12-18 1981-07-08 Pearce P J Loudspeaker cabinet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2435729A (en) * 2006-03-03 2007-09-05 Mark Treanor A slot-loaded loudspeaker enclosure with curved walls
GB2435729B (en) * 2006-03-03 2009-06-03 Mark Treanor A speaker

Also Published As

Publication number Publication date
ES279007Y (es) 1986-04-01
FR2544949A1 (fr) 1984-10-26
FR2544949B1 (fr) 1986-10-10
ES279007U (es) 1985-06-16

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19850205

17Q First examination report despatched

Effective date: 19861121

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19880428

RIN1 Information on inventor provided before grant (corrected)

Inventor name: VERRIER EPOUSE MURILLO, MARIE HELENE