FR2613167A3 - Bass load making it possible to increase output in a small volume - Google Patents
Bass load making it possible to increase output in a small volume Download PDFInfo
- Publication number
- FR2613167A3 FR2613167A3 FR8704439A FR8704439A FR2613167A3 FR 2613167 A3 FR2613167 A3 FR 2613167A3 FR 8704439 A FR8704439 A FR 8704439A FR 8704439 A FR8704439 A FR 8704439A FR 2613167 A3 FR2613167 A3 FR 2613167A3
- Authority
- FR
- France
- Prior art keywords
- cabinet
- bass
- acoustic
- volume
- membranes
- 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- Withdrawn
Links
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000012528 membrane Substances 0.000 claims description 10
- 239000002023 wood Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 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
- H04R1/2838—Enclosures comprising vibrating or resonating arrangements of the bandpass type
- H04R1/2842—Enclosures comprising vibrating or resonating arrangements of the bandpass type 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
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/227—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only using transducers reproducing the same frequency band
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
Description
L'invention concerne les haut parleurs et, notamment, un procédé de charge de grave permettant de diminuer le volume et le poids des enceintes tout en augmentant le niveau de reproduction des sons graves. The invention relates to loudspeakers and, in particular, to a bass charging method making it possible to reduce the volume and the weight of the speakers while increasing the reproduction level of the bass sounds.
Les différentes charges de grave peuvent être classées en trois catégories - l'enceinte close offre un compromis rendement / réponse dans le grave / volume (R/G/V).peu favorable. De plus l'excursion des membranes est très importante, à forte puissance.The different bass loads can be classified into three categories - the closed speaker offers a yield / response compromise in the bass / volume (R / G / V). Slightly favorable. In addition, the excursion of the membranes is very important, at high power.
- l'enceinte à pavillon offre une excursion des membranes réduite mais le compromis R/G/V est encore plus défavorable que pour l'enceinte close - l'enceinte à évent est meilleure que l'enceinte close d'un facteur dE l'ordre de 3 au niveau du compromis R/G/V, et se situe entre les deux principes de charge précédent en matière d'excursion des membranes. La réponse impulsionnelle est généralement meilleure que celle des pavillons.- the horn enclosure offers a reduced excursion of the membranes but the R / G / V compromise is even more unfavorable than for the closed enclosure - the vent enclosure is better than the enclosed enclosure by a factor of order of 3 at the level of the R / G / V compromise, and lies between the two previous loading principles in terms of excursion of the membranes. The impulse response is generally better than that of the flags.
Le but de la présente invention est de réaliser un système de charge de grave combinant les performances du pavillon pour l'excursion des membranes et de l'enceinte à évent pour le compromis R/G/V et la réponse impulslonnelle. The aim of the present invention is to provide a bass load system combining the performance of the horn for the excursion of the membranes and of the vent enclosure for the R / G / V compromise and the impulse response.
Ce système pourra être utilisé aussi bien pour les enceintes de sonorisation que pour les enceintes domestiques. This system can be used both for public address speakers and for domestic speakers.
On atteint ce but avec une enceinte acoustique comportant au moins un haut parleur de grave et deux volumes d'air accordés chacun par un ou plusieurs events [une caviste de chaque côté de la membrane) travaillants comme deux résonateurs accordés à des fréquences différentes. This goal is achieved with an acoustic enclosure comprising at least one woofer and two volumes of air each tuned by one or more vents (one cellar on each side of the membrane) working as two resonators tuned to different frequencies.
L'invention sera mieux comprise et pourra être calculée entièrement par l'homme de métier grâce aux schémas joints, mettant en oeuvre les paramètres électro-mécano-acoustiques de la charge de grave. The invention will be better understood and can be calculated entirely by a person skilled in the art thanks to the attached diagrams, implementing the electro-mechanical-acoustic parameters of the bass load.
Le schéma équivalent de la charge de grave (Figure 1) comprend les élements suivants - les éléments (4), (5) et (6) sont les données relatives au haut parler - les éléments [2) et (3) sont les données relatives au volume de charge
arrière - les éléments 17) et (8) sont les données relatives au volume de charge
avant - l'élément [1) représente la tension appliquée au haut parleur ramenée
en acoustique - l'élément (2) représente la compliance acoustique (notation possible
CAF ) - l'élément t3) représente la masse acoustique de l'air contenu dans
l'évent débouchant dans le volume arrière (notation possible MAF) - l'élément (4) représente la compliance acoustique des suspensions du
haut parleur (notation possible CAS) - l'élément [5) représente la masse acoustique de l'équipage mobile du
haut parleur (notation possible MAS) - l'élément (8) représente la résistance acoustique due à l'amortis
sement mécanique et électrique du haut parleur (notation possible
RAT) - l'élément [7) représente la compliance acoustique du volume avant
[notation possible CAB) - l'élément (8) représente la masse acoustique de l'air contenu dans
l'évent débouchant dans le volume avant (notation possible MAV)
L'homme de métier dans la conception de cette enceinte peut s'aider du schéma équivalent de la charge de grave pour optimiser la réponse en fréquence d'un tel baffle. il pourra remarquer que nous nous trouvons en présence d'un filtre acoustique passe bande, dont le passe haut est du 4ème ordre et le passe bas du 2 ème ordre (facilitant ainsi le recouvrement avec la Qoix médium)
Un exemple de réalisation non limitatif de l'invention et un dessin joint permettront de mieux comprendre l'dnvention. The equivalent diagram of the bass load (Figure 1) includes the following elements - elements (4), (5) and (6) are the data relating to the loudspeaker - elements [2) and (3) are the data relating to the load volume
rear - elements 17) and (8) are the data relating to the load volume
front - element [1) represents the voltage applied to the loudspeaker brought back
in acoustics - element (2) represents acoustic compliance (possible notation
CAF) - element t3) represents the acoustic mass of the air contained in
the vent opening into the rear volume (possible MAF notation) - element (4) represents the acoustic compliance of the suspensions of the
loudspeaker (CAS possible notation) - element [5) represents the acoustic mass of the mobile equipment of the
loudspeaker (MAS possible notation) - element (8) represents the acoustic resistance due to damping
mechanical and electrical loudspeaker (possible notation
RAT) - element [7) represents the acoustic compliance of the front volume
[possible CAB notation) - element (8) represents the acoustic mass of the air contained in
the vent opening into the front volume (possible MAV notation)
Those skilled in the art of designing this enclosure can use the equivalent scheme of the bass load to optimize the frequency response of such a cabinet. he will be able to notice that we are in the presence of an acoustic band pass filter, whose high pass is of the 4th order and the low pass of the 2nd order (thus facilitating the recovery with the medium Qoix)
A non-limiting exemplary embodiment of the invention and an attached drawing will make it possible to better understand the invention.
La Figure 2^est une vue frontale de l'invention. Figure 2 ^ is a front view of the invention.
La Figure 3 est une vue de dessus en coupe selon la ligne
AA de la Figure 2.Figure 3 is a top view in section along the line
AA in Figure 2.
De façon classique, l'enceinte est constituée d'un coffre en forme de boite paralldlépipèdique. Celui ci pourra être construit en bois. Conventionally, the enclosure is made up of a box-shaped box. This can be built of wood.
Dans le mode particulier de réalisation décrit ici et renre- senté sur le dessin, l'enceinte acoustique comptrte deux haut parlers identiques pour profiter du couplage acoustique des membranes. In the particular embodiment described here and shown in the drawing, the acoustic enclosure has two identical loudspeakers to take advantage of the acoustic coupling of the membranes.
L'enceinte, selon l'invention, présente nécessairement au moins un haut parleur de grave et deux volumes d'airgaccordés par des évents, selon l'homme de métier. Le coffre présente un cloisonnement intérieur 17 qui sépare les deux volumes d'air V1 ET V2, situés de chaque côté de la membrane des haut parleurs HP1 et HP2. The enclosure according to the invention necessarily has at least one woofer and two volumes of airgonconnected by vents, according to a person skilled in the art. The trunk has an internal partition 17 which separates the two air volumes V1 AND V2, located on each side of the membrane of the speakers HP1 and HP2.
Le volume V1 eet accordé par les six évents 9, ID, 11, 12, 13,et 14. The volume V1 is given by the six vents 9, ID, 11, 12, 13, and 14.
Le Volume V2 est accordé par les deux évents 15 et 16. Volume V2 is granted by the two vents 15 and 16.
il est évident qu'il s'agit d'un exemple non limitatif de l'invention St que l'on peut réaliser une enceinte de dimension et ce forme quelconques pourvue qu'elle réponde aux exigences connues de l'homme de métier selon les paramètres électro-mécano-acoostiques. it is obvious that this is a nonlimiting example of the invention St that an enclosure of any size and shape can be produced provided that it meets the requirements known to the skilled person according to the electro-mechanical-acoostic parameters.
De mène ce baffle pourrait être construit en bois, composite, plastique ou tout autre matériaux. From this led this cabinet could be constructed of wood, composite, plastic or any other material.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8704439A FR2613167A3 (en) | 1987-03-27 | 1987-03-27 | Bass load making it possible to increase output in a small volume |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8704439A FR2613167A3 (en) | 1987-03-27 | 1987-03-27 | Bass load making it possible to increase output in a small volume |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2613167A3 true FR2613167A3 (en) | 1988-09-30 |
Family
ID=9349587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8704439A Withdrawn FR2613167A3 (en) | 1987-03-27 | 1987-03-27 | Bass load making it possible to increase output in a small volume |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2613167A3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0377262A2 (en) * | 1989-01-05 | 1990-07-11 | Polk Investment Corporation | A compact and efficient sub-woofer system and method for installation in structural partitions |
-
1987
- 1987-03-27 FR FR8704439A patent/FR2613167A3/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0377262A2 (en) * | 1989-01-05 | 1990-07-11 | Polk Investment Corporation | A compact and efficient sub-woofer system and method for installation in structural partitions |
EP0377262A3 (en) * | 1989-01-05 | 1991-10-30 | Polk Investment Corporation | A compact and efficient sub-woofer system and method for installation in structural partitions |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |