FR2768009A1 - Acoustic see through wall block - Google Patents
Acoustic see through wall block Download PDFInfo
- Publication number
- FR2768009A1 FR2768009A1 FR9707089A FR9707089A FR2768009A1 FR 2768009 A1 FR2768009 A1 FR 2768009A1 FR 9707089 A FR9707089 A FR 9707089A FR 9707089 A FR9707089 A FR 9707089A FR 2768009 A1 FR2768009 A1 FR 2768009A1
- Authority
- FR
- France
- Prior art keywords
- acoustic
- walls
- enclosure according
- lamellae
- box
- 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- Withdrawn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
- 239000000470 constituent Substances 0.000 claims description 6
- 239000002023 wood Substances 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 abstract 1
- 238000013016 damping Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000001228 spectrum Methods 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
- H04R1/2869—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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
- H04R2201/029—Manufacturing aspects of enclosures transducers
Abstract
Description
OESCRIPTION
La présente Invention a pour but d'obtenir un caisson acoustique
dont la face interne des parois constitutives présente une configuration
assurant un très faible coeffiçient de réflexion acoustique.OESCRIPTION
The object of the present invention is to obtain an acoustic box
whose internal face of the constituent walls has a configuration
ensuring a very low coefficient of acoustic reflection.
La présente Invention a pour but également d'obtenir un caisson
acoustique dont la face interne des parois constitutives ,assure
un amortissement efficace des ondes stationnaires présentes à l'intérieur
du dit caisson à toutes les fréquences susceptibles d'ètres reproduites
par le transducteur acoustique assoçié au dit caisson
Ces résultats sont obtenus par le frottement des molécules d'air
contenues à l'intérieur du caisson ,sur la surface en relief issue du procédé
d'empilage des lamelles constitutives
Cette enceinte acoustique du type comprenant un boitier équipé
d'au moins un transducteur acoustique , est caractérisée en ce qu'au moins
l'un des cotés du dit boitier est formé d'une série de lamelles , contigues
uniquement à leurs extrémités ,de façon à en permettre le collage
entres elles.The present invention also aims to obtain a box
acoustics whose internal face of the constituent walls, ensures
effective damping of standing waves inside
of said box at all frequencies likely to be reproduced
by the acoustic transducer associated with said box
These results are obtained by the friction of the air molecules
contained inside the box, on the raised surface resulting from the process
stacking of the constituent slats
This type of acoustic enclosure comprising an equipped box
at least one acoustic transducer, is characterized in that at least
one of the sides of said box is formed by a series of strips, contiguous
only at their ends, so as to allow bonding
between them.
Cette série de lamelles constitutives constitue une paroie ajourée
sur trois des cotés de l'enceinte . le coté droit ,le coté gauche
et le fond de l'enceinte
La face avant ,le dessus et le dessous de l'enceinte sont recouverts
d'une plaque externe de faible épaisseur.This series of constituent slats constitutes an openwork wall
on three sides of the enclosure. the right side, the left side
and the bottom of the enclosure
The front, top and bottom of the enclosure are covered
a thin external plate.
Cette disposition particulière des parois ,assure un passage controlé de
l'air intérieur du caisson animé d'un mouvement de va et vient
par le déplacement de la membrane du transducteur assoçié reproduisant
la modulation électronique qui lui est appliqué
Il en résulte une atténuation de certaines fréquences du bas du
sprectre par l'effet de court circuit acoustique résultant de la
vitesse et de la distance parcourue par l'onde sonore en application
de la Formule de THOMSON . This particular arrangement of the walls ensures a controlled passage of
the air inside the box moving back and forth
by the displacement of the associated transducer membrane reproducing
the electronic modulation applied to it
This results in an attenuation of certain frequencies at the bottom of the
sprectre by the effect of acoustic short circuit resulting from the
speed and distance traveled by the sound wave in application
of THOMSON's Formula.
Cette atténuation des fréquences est recherchée de façon à obtenir
une correction du spectre de la bande passante de 20 à 500 Hz
Ce résultat est habituellement obtenu par l'insertion d'un filtre
selfique et capacitif dont l'iconvénient est un déphasage de certaines
fréquences de la modulation à reproduire , dont il résulte de la
distorsion harmonique de phase. This frequency attenuation is sought so as to obtain
correction of the bandwidth spectrum from 20 to 500 Hz
This is usually achieved by inserting a filter
inductive and capacitive whose disadvantage is a phase shift of certain
frequencies of the modulation to be reproduced, which results from the
harmonic phase distortion.
DESCRIPTION
La série de lamelles parallèlles perpendiculaires au plan de la paroi ,assure la rigidité mécanique de ladite paroi ainsi constituée.DESCRIPTION
The series of parallel strips perpendicular to the plane of the wall, ensures the mechanical rigidity of said wall thus formed.
La largeur et l'épaisseur des lamelles devront ètres suffisantes pour assurer la rigidité nécessaire au bon comportement mécanique et acoustique de l'enceinte ainsi réalisée et déterminées en fonction des résultats acoustiques recherchés.The width and thickness of the slats must be sufficient to ensure the rigidity necessary for the good mechanical and acoustic behavior of the enclosure thus produced and determined according to the desired acoustic results.
Selon d'autres catractéristiques avantageuses mais non limitatives lesdites lamelles ,lesdites plaques de faibles épaisseur ,sont formées d'un matériaux à base de bois
Lesdites lamelles et lesdites plaques de faible épaisseur sont li fixées les une aux autres au moyen d'un liant ,par exemple de la colle à bois
Les dimensions et le nombre de lamelles constitutives ne sont pas limitatives.According to other advantageous but non-limiting characteristics, said strips, said thin plates, are formed from a wood-based material.
Said lamellae and said thin plates are bonded to each other by means of a binder, for example wood glue
The dimensions and the number of constituent slats are not limiting.
Les dimensions des lamelles et les dimensions des plaques externes déterminent les dimensions du boitier désiré.The dimensions of the slats and the dimensions of the external plates determine the dimensions of the desired housing.
Cette enceinte est réalisée sans ajouts d'éléments extérieurs autres que ceux qui forment ses parois.Sa fabrication artisanal ou industrielle est simple et façile
La FIGURE 1 est une cue en perspective d'un mode de réalisation de l'enceinte
La FIGURE 2 montre l'application des plaques de recouvrement de faible épaisseur :.Vue de profil.This enclosure is made without adding external elements other than those that form its walls. Its artisanal or industrial production is simple and easy
FIGURE 1 is a perspective cue of an embodiment of the enclosure
FIGURE 2 shows the application of thin cover plates:. Profile view.
1 PLAQUE AVANT
2 PLAQUE DE DESSUS
3 PLAQUE DE DESSOUS 1 FRONT PLATE
2 TOP PLATE
3 BOTTOM PLATE
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9707089A FR2768009A1 (en) | 1997-05-27 | 1997-05-27 | Acoustic see through wall block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9707089A FR2768009A1 (en) | 1997-05-27 | 1997-05-27 | Acoustic see through wall block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2768009A1 true FR2768009A1 (en) | 1999-03-05 |
Family
ID=9507736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9707089A Withdrawn FR2768009A1 (en) | 1997-05-27 | 1997-05-27 | Acoustic see through wall block |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2768009A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB434563A (en) * | 1934-08-13 | 1935-09-04 | Philip Keston Turner | Improvements in and relating to baffles and containers for loud speakers |
| DE2218496A1 (en) * | 1972-04-17 | 1973-10-25 | Luebeck Fa Otto | ENCLOSURE SPEAKERS |
| US4509615A (en) * | 1980-02-04 | 1985-04-09 | Hruby John O | Multi-chamber enclosure for loudspeakers |
| FR2652978A1 (en) * | 1989-10-10 | 1991-04-12 | Kopferschmitt Lucien | Acoustic enclosure |
| FR2705011A1 (en) * | 1993-05-04 | 1994-11-10 | Kopferschmitt Lucien | Loudspeaker enclosure |
-
1997
- 1997-05-27 FR FR9707089A patent/FR2768009A1/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB434563A (en) * | 1934-08-13 | 1935-09-04 | Philip Keston Turner | Improvements in and relating to baffles and containers for loud speakers |
| DE2218496A1 (en) * | 1972-04-17 | 1973-10-25 | Luebeck Fa Otto | ENCLOSURE SPEAKERS |
| US4509615A (en) * | 1980-02-04 | 1985-04-09 | Hruby John O | Multi-chamber enclosure for loudspeakers |
| FR2652978A1 (en) * | 1989-10-10 | 1991-04-12 | Kopferschmitt Lucien | Acoustic enclosure |
| FR2705011A1 (en) * | 1993-05-04 | 1994-11-10 | Kopferschmitt Lucien | Loudspeaker enclosure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |