FR2428950A1 - Systeme de reproduction sonore resistant aux deflagrations - Google Patents

Systeme de reproduction sonore resistant aux deflagrations

Info

Publication number
FR2428950A1
FR2428950A1 FR7817872A FR7817872A FR2428950A1 FR 2428950 A1 FR2428950 A1 FR 2428950A1 FR 7817872 A FR7817872 A FR 7817872A FR 7817872 A FR7817872 A FR 7817872A FR 2428950 A1 FR2428950 A1 FR 2428950A1
Authority
FR
France
Prior art keywords
loudspeaker
enclosure
fire resistant
sealed
reproduction
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.)
Granted
Application number
FR7817872A
Other languages
English (en)
Other versions
FR2428950B1 (fr
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7817872A priority Critical patent/FR2428950A1/fr
Publication of FR2428950A1 publication Critical patent/FR2428950A1/fr
Application granted granted Critical
Publication of FR2428950B1 publication Critical patent/FR2428950B1/fr
Granted 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
    • H04R1/22—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
    • H04R1/283—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
    • H04R1/2834—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm for loudspeaker transducers
    • 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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • 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
    • H04R1/22—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
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
    • H04R1/288—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding for loudspeaker transducers

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)

Abstract

Système de reproduction sonore résistant aux déflagrations, du type comprenant au moins un haut-parleur électrodynamique monté dans un boîtier, caractérisé en ce qu'il comprend un boîtier étanche d'un volume utile inférieur ou égal à environ 4 dm**3, un premier haut-parleur électrodynamique actif 10 monté sur une première face 101 du boîtier et un deuxième haut-parleur passif 20 monté sur une deuxième face 102 du boîtier pour réaliser un équilibrage des pressions à l'intérieur du boîtier. Application à la réalisation de dispositifs capables de résister à des déflagrations.
FR7817872A 1978-06-15 1978-06-15 Systeme de reproduction sonore resistant aux deflagrations Granted FR2428950A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7817872A FR2428950A1 (fr) 1978-06-15 1978-06-15 Systeme de reproduction sonore resistant aux deflagrations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7817872A FR2428950A1 (fr) 1978-06-15 1978-06-15 Systeme de reproduction sonore resistant aux deflagrations

Publications (2)

Publication Number Publication Date
FR2428950A1 true FR2428950A1 (fr) 1980-01-11
FR2428950B1 FR2428950B1 (fr) 1980-10-31

Family

ID=9209540

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7817872A Granted FR2428950A1 (fr) 1978-06-15 1978-06-15 Systeme de reproduction sonore resistant aux deflagrations

Country Status (1)

Country Link
FR (1) FR2428950A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0080054A1 (fr) * 1981-11-20 1983-06-01 Deutsche Thomson-Brandt GmbH Enceinte acoustique du type "bass-reflex" avec un radiateur passif contrôlé
FR2559983A1 (fr) * 1984-02-17 1985-08-23 Grandin Denis Enceinte electroacoustique etanche marine
US4696037A (en) * 1983-01-04 1987-09-22 U.S. Philips Corporation Loudspeaker arrangement comprising one or more flat diaphragms

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3667568A (en) * 1970-09-15 1972-06-06 Arthur Liebscher Pressure compensator for speaker cabinets
FR2247867A1 (fr) * 1972-08-14 1975-05-09 Prince Gilles
FR2251976A1 (en) * 1973-11-16 1975-06-13 Autophon Ag Sealed electro-acoustic transducer - has membrane equalising internal and external pressures

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3667568A (en) * 1970-09-15 1972-06-06 Arthur Liebscher Pressure compensator for speaker cabinets
FR2247867A1 (fr) * 1972-08-14 1975-05-09 Prince Gilles
FR2251976A1 (en) * 1973-11-16 1975-06-13 Autophon Ag Sealed electro-acoustic transducer - has membrane equalising internal and external pressures

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0080054A1 (fr) * 1981-11-20 1983-06-01 Deutsche Thomson-Brandt GmbH Enceinte acoustique du type "bass-reflex" avec un radiateur passif contrôlé
US4696037A (en) * 1983-01-04 1987-09-22 U.S. Philips Corporation Loudspeaker arrangement comprising one or more flat diaphragms
FR2559983A1 (fr) * 1984-02-17 1985-08-23 Grandin Denis Enceinte electroacoustique etanche marine

Also Published As

Publication number Publication date
FR2428950B1 (fr) 1980-10-31

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