FR2418990A1 - Emetteur de son utilisant un haut-parleur - Google Patents

Emetteur de son utilisant un haut-parleur

Info

Publication number
FR2418990A1
FR2418990A1 FR7806122A FR7806122A FR2418990A1 FR 2418990 A1 FR2418990 A1 FR 2418990A1 FR 7806122 A FR7806122 A FR 7806122A FR 7806122 A FR7806122 A FR 7806122A FR 2418990 A1 FR2418990 A1 FR 2418990A1
Authority
FR
France
Prior art keywords
enclosure
frequency characteristics
flexible sheet
loudspeaker enclosure
sheet partition
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
FR7806122A
Other languages
English (en)
Other versions
FR2418990B1 (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.)
BROTHIER LABORATOIRES
Original Assignee
BROTHIER LABORATOIRES
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 BROTHIER LABORATOIRES filed Critical BROTHIER LABORATOIRES
Priority to FR7806122A priority Critical patent/FR2418990A1/fr
Publication of FR2418990A1 publication Critical patent/FR2418990A1/fr
Application granted granted Critical
Publication of FR2418990B1 publication Critical patent/FR2418990B1/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
    • H04R1/2811—Enclosures comprising vibrating or resonating arrangements for loudspeaker transducers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Laminated Bodies (AREA)

Abstract

Cet émetteur de sons est du type de ceux constitués par une enceinte fermée, dont l'extrémite antérieure est obturée par un haut-parleur et l'extrémité postérieure par un fonds, et dont la cavité est divisée par une cloison en deux chambres de capacités déterminées. La cloison est constituée par un membrane épaisse, souple et poreuse; elle peut notamment être en une matière plastique multicellulaire telle que le polyuréthane ou le propylène expansé. On obtient ainsi une enceinte parfaitement équilibrée comprenant deux volumes couplés dont l'interréaction est amortie.
FR7806122A 1978-03-03 1978-03-03 Emetteur de son utilisant un haut-parleur Granted FR2418990A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7806122A FR2418990A1 (fr) 1978-03-03 1978-03-03 Emetteur de son utilisant un haut-parleur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7806122A FR2418990A1 (fr) 1978-03-03 1978-03-03 Emetteur de son utilisant un haut-parleur

Publications (2)

Publication Number Publication Date
FR2418990A1 true FR2418990A1 (fr) 1979-09-28
FR2418990B1 FR2418990B1 (fr) 1984-07-13

Family

ID=9205312

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7806122A Granted FR2418990A1 (fr) 1978-03-03 1978-03-03 Emetteur de son utilisant un haut-parleur

Country Status (1)

Country Link
FR (1) FR2418990A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988004513A1 (fr) * 1986-12-12 1988-06-16 Pillerault Clement Eloise Procede d'egalisation de la reponse amplitude/frequence d'un ensemble transducteur electro-acoustique, ensemble transducteur correspondant
FR2609590A1 (fr) * 1986-04-21 1988-07-15 Bonnel Regis Le sous-baffle en mousse de plastique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB903995A (en) * 1957-09-10 1962-08-22 Philips Electrical Ind Ltd Improvements in or relating to loudspeaker enclosures
US3696886A (en) * 1968-05-03 1972-10-10 James C Armstrong Speaker cabinet enclosure and method of tuning thereof
FR2245143A1 (en) * 1973-09-21 1975-04-18 Batlouni Emile Vented tubular loudspeaker enclosure - has low fundamental resonant frequency and omnidirectional output
FR2260916A1 (en) * 1974-02-07 1975-09-05 Dumez Johan Loudspeaker directional enclosure - has diaphragm forming two separate parts for low and high frequency sounds
FR2334259A1 (fr) * 1975-12-01 1977-07-01 Art Acoustique Appliquee Nouvelle enceinte acoustique

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB903995A (en) * 1957-09-10 1962-08-22 Philips Electrical Ind Ltd Improvements in or relating to loudspeaker enclosures
US3696886A (en) * 1968-05-03 1972-10-10 James C Armstrong Speaker cabinet enclosure and method of tuning thereof
FR2245143A1 (en) * 1973-09-21 1975-04-18 Batlouni Emile Vented tubular loudspeaker enclosure - has low fundamental resonant frequency and omnidirectional output
FR2260916A1 (en) * 1974-02-07 1975-09-05 Dumez Johan Loudspeaker directional enclosure - has diaphragm forming two separate parts for low and high frequency sounds
FR2334259A1 (fr) * 1975-12-01 1977-07-01 Art Acoustique Appliquee Nouvelle enceinte acoustique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2609590A1 (fr) * 1986-04-21 1988-07-15 Bonnel Regis Le sous-baffle en mousse de plastique
WO1988004513A1 (fr) * 1986-12-12 1988-06-16 Pillerault Clement Eloise Procede d'egalisation de la reponse amplitude/frequence d'un ensemble transducteur electro-acoustique, ensemble transducteur correspondant
FR2608343A1 (fr) * 1986-12-12 1988-06-17 Eloise Pillerault Procede d'egalisation de la reponse amplitude/frequence d'un ensemble transducteur electro-acoustique, ensemble transducteur correspondant

Also Published As

Publication number Publication date
FR2418990B1 (fr) 1984-07-13

Similar Documents

Publication Publication Date Title
AU511776B2 (en) Variable displacement compressor
JPS54143905A (en) Variable output compressor
CA1030412A (fr) Commande a effort variable
JPS5663800A (en) Variable energy standing wave linear accelerator
AU518395B2 (en) Moveable wall
AU531479B2 (en) Door latching assembly
FR2256154B1 (fr)
JPS54154770A (en) Tetrazine derivative*its manufacture and use
AU511331B2 (en) Vaccines containing both ribosome and saccharide microorganism cell fractions
AU505577B2 (en) Electromagnetic air compressor
YU162579A (en) Multiple-flow gas-dynamic machine/blower with compressing waves
FR2418990A1 (fr) Emetteur de son utilisant un haut-parleur
GB2019848B (en) 3-(acyloxy or alkoxy) - 9,11 - epoxypregna - 1,3,5(6) - trienes, and their use in the synthesis of 6 -halo corticoids
CA1035034A (fr) Cornets ondules pour microondes et autres cornets semblables
USD254637S (en) Sweatband
GB2034546B (en) Transistor amplifier with variable gain
DE2860388D1 (en) Open air grilling-table
AU534050B2 (en) Refrigerator
JPS5565867A (en) Closed turbo refrigerator
CA1027583A (fr) Sulfoxydes et sulfons de cyanophenyle a action fongicide
AU533601B2 (en) Drying with closed gas stream
JPS5546083A (en) Air pump for expanding body
JPS56795A (en) Variable volume speaker box
AU508223B2 (en) Rorary compressor with resilient vane extension means
GB2019492B (en) Air compressors

Legal Events

Date Code Title Description
TP Transmission of property
TP Transmission of property
ST Notification of lapse