FR2428950A1 - Systeme de reproduction sonore resistant aux deflagrations - Google Patents
Systeme de reproduction sonore resistant aux deflagrationsInfo
- 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
Links
- 230000009970 fire resistant effect Effects 0.000 title abstract 2
- 230000002745 absorbent Effects 0.000 abstract 1
- 239000002250 absorbent Substances 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 239000011152 fibreglass Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000012528 membrane Substances 0.000 abstract 1
- 239000002966 varnish Substances 0.000 abstract 1
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.
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)
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)
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 |
-
1978
- 1978-06-15 FR FR7817872A patent/FR2428950A1/fr active Granted
Patent Citations (3)
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)
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
CL | Concession to grant licences | ||
CL | Concession to grant licences |