DE939511C - Arrangement for the central broadband sound supply of an airspace - Google Patents
Arrangement for the central broadband sound supply of an airspaceInfo
- Publication number
- DE939511C DE939511C DEP53182A DEP0053182A DE939511C DE 939511 C DE939511 C DE 939511C DE P53182 A DEP53182 A DE P53182A DE P0053182 A DEP0053182 A DE P0053182A DE 939511 C DE939511 C DE 939511C
- Authority
- DE
- Germany
- Prior art keywords
- arrangement
- loudspeakers
- airspace
- broadband sound
- baffle
- 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.)
- Expired
Links
- 230000005520 electrodynamics Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 125000006850 spacer group Chemical group 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
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
-
- 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
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
-
- 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
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
- H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R27/00—Public address systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R27/00—Public address systems
- H04R27/02—Amplifying systems for the deaf
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Description
Das Hauptpatent bezieht sich auf . eine bekannte Lautsprecheranordnung, die zur zentralen breitbandigen Schallversorgung eines Luftraumes dient. Sie besteht aus mehreren trichterlosen, elektrodynamischen Lautsprechern, die auf einer Geraden dicht aneinander und mit ihren Achsen senkrecht auf einer Schallwand stehen. Dadurch tritt eine derartige Bündelung des Schalles auf, daß er nur auf die Zuhörer gerichtet ist. Dies istThe main patent relates to. a known loudspeaker arrangement, which for the central Broadband sound supply of an airspace is used. It consists of several funnelless, electrodynamic Loudspeakers that stand close to each other on a straight line and with their axes perpendicular to a baffle. Through this if the sound is focused in such a way that it is only directed at the listener. This is
ίο besonders in halligen Räumen von Vorteil, weil der Schall von der Decke ferngehalten wird.ίο particularly advantageous in reverberant rooms because of the Sound is kept away from the ceiling.
Nach dem Hauptpatent wird eine solche bekannte Lautsprechergruppe verbessert, indem die Lautsprecher auf einer so schmalen Schallwand befestigt werden, daß sich für die tiefen Frequenzen um die Längskanten herum praktisch ein Kurzschluß ergibt. Die Breite der Schallwand ist nur etwa gleich dem Durchmesser der Lautsprecher. Hierdurch ergibt sich neben den Vorteilen einer einfachen, wenig Platz beanspruchenden günstigen Form der Vorteil, daß innerhalb der Bündelungsebene eine gleichmäßige Verteilung der Lautstärke, und zwar ohne Bevorzugung oder Benachteiligung einzelner Frequenzgebiete, auftritt, wie im einzelnen in der Patentschrift des Hauptpatents· erklärt ist.According to the main patent, such a known loudspeaker group is improved by the Loudspeakers can be mounted on a baffle so narrow that it covers the low frequencies practically results in a short circuit around the longitudinal edges. The width of the baffle is only roughly equal to the diameter of the speakers. This results in addition to the advantages of a simple, space-consuming favorable shape the advantage that within the bundling level an even distribution of volume, without preference or disadvantage individual frequency ranges occurs, as explained in detail in the patent specification of the main patent is.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt. Von der Gruppe sind lediglich zwei unmittelbar benachbarte Laut-Sprecher 1 und 2 gezeichnet. Der Mittenabstand der beiden Lautsprecher ist dadurch verringert, daß der eine Lautsprecher mit seiner Öffnung nach vorn, der andere mit seiner öffnung nach hinten eingebaut ist. Die Entfernung 6, die für die Gleichphasigkeit der Abstrahlung entscheidend ist, muß jeweils für die verwendeten Systeme einmal durch Versuch festgestellt werden. Technisch läßt sich der Vorschlag in einfacher Weise durchführen, indem zwischen den Rand des Membrankorbes und die Schallwand 3 Abstandsringe 4 und S eingelegt werden. Diese Konstruktion stellt jedoch lediglich ein Ausführungsbeispiel dar, auf das die Erfindung nicht beschränkt sein soll.An embodiment of the invention is shown in the drawing. Are from the group only two immediately adjacent phonetic speakers 1 and 2 are drawn. The center-to-center distance of the two loudspeakers is reduced by the fact that one loudspeaker with its opening facing at the front, the other is installed with its opening to the rear. The distance 6 required for the The in-phase of the radiation is crucial and must be done once for the systems used can be determined by experiment. Technically, the proposal can be carried out in a simple manner, by inserting 3 spacer rings 4 and S between the edge of the membrane basket and the baffle will. However, this construction is only an embodiment to which the Invention is not intended to be limited.
Die dargestellte Anordnung besitzt noch einen besonderen Vorteil für den Fall, daß man die Lautsprechergruppe aus fremderregten Lautsprechern aufbaut. Es ist bekannt, daß man mit solchen Lautsprechern bei gleichen räumlichen Abmessungen wesentlich größere Feldstärken erzeugen kann. Infolge der Wirkungsgradsteigerung für tiefe Frequenzen wird bei der normalen Gruppenanordnung, wie sie im Hauptpatent beschrieben ist, im allgemeinen auch das durch das erregende Feld hervorgerufene Brummen in Erscheinung treten. Man ist in diesem Fall genötigt, teure Siebeinrichtungen zu benutzen. Diese Schwierigkeiten treten bei der erfindungsgemäßen Ausbildung der Lautsprechergruppe nicht auf. Da die Schwingspulen einander benachbarter Lautsprechersysteme gegenphasig gepolt sein müssen, tritt eine Kompensation des durch das erregende Fremdfeld induzierten Brumms auf. Bei Verwendung von fremderregten Lautsprechern ergibt sich also der Vorteil, daß man mit einfachen und billigen Feldgleichrichtern auskommt.The arrangement shown has a particular advantage in the event that the Loudspeaker group builds up from separately excited loudspeakers. It is known that with such loudspeakers generate significantly greater field strengths with the same spatial dimensions can. As a result of the increase in efficiency for low frequencies, the normal Group arrangement, as described in the main patent, generally also by the Exciting field caused hum appear. In this case it is necessary to use expensive screening devices. These difficulties arise with the training according to the invention the loudspeaker group does not appear. Because the voice coils of adjacent speaker systems have to be polarized out of phase, a compensation of the hum induced by the exciting external field occurs. Using separately excited loudspeakers have the advantage that you can use simple and cheap field rectifiers gets by.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP53182A DE939511C (en) | 1948-10-02 | 1949-08-28 | Arrangement for the central broadband sound supply of an airspace |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP11182A DE934353C (en) | 1948-10-02 | 1948-10-02 | Arrangement for the central broadband sound supply of an airspace |
| DEP53182A DE939511C (en) | 1948-10-02 | 1949-08-28 | Arrangement for the central broadband sound supply of an airspace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE939511C true DE939511C (en) | 1956-02-23 |
Family
ID=25989749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEP53182A Expired DE939511C (en) | 1948-10-02 | 1949-08-28 | Arrangement for the central broadband sound supply of an airspace |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE939511C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3637938A (en) * | 1969-08-06 | 1972-01-25 | Pemcor Inc | Stereo speaker arrangement and circuit |
| US4054750A (en) * | 1976-06-18 | 1977-10-18 | Ralph Montgomery | Full range rotatable speaker housing with oppositely directed speakers |
-
1949
- 1949-08-28 DE DEP53182A patent/DE939511C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3637938A (en) * | 1969-08-06 | 1972-01-25 | Pemcor Inc | Stereo speaker arrangement and circuit |
| US4054750A (en) * | 1976-06-18 | 1977-10-18 | Ralph Montgomery | Full range rotatable speaker housing with oppositely directed speakers |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE1276730B (en) | Microphone loudspeaker system for broadband sound supply in an air space | |
| DE624049C (en) | Flat speaker built into a housing | |
| DE939511C (en) | Arrangement for the central broadband sound supply of an airspace | |
| AT150559B (en) | Sound reproducing device. | |
| DE743231C (en) | Horn loudspeaker with several exponential loudspeakers arranged in a fan-like manner to achieve a predetermined directional characteristic, in particular tweeter | |
| DE945768C (en) | Loudspeaker group arrangement consisting of several loudspeakers built in a row in a common baffle-like baffle | |
| DE939512C (en) | Arrangement for the central broadband sound supply of an airspace | |
| DE857206C (en) | Electro-acoustic transmission system | |
| AT128224B (en) | Speaker. | |
| DE939513C (en) | Arrangement for the central broadband sound supply of an airspace | |
| DE19951406B4 (en) | Speaker combination | |
| DE711382C (en) | Ribbon microphone | |
| DE726439C (en) | Loudspeaker system for the sound supply of larger areas or rooms | |
| DE684335C (en) | Group arrangement of sound transmitters | |
| DE3204702A1 (en) | Exponential horn for loudspeaker systems | |
| DE856901C (en) | Arrangement for stereophonic recording of tones with directional microphones | |
| DE973305C (en) | Loudspeaker group arrangement consisting of several loudspeakers built in a row in a common baffle-like baffle | |
| DE581341C (en) | Loudspeaker arrangement for rooms with strong reverberation | |
| DE939389C (en) | Loudspeaker or microphone arrangement with several individual loudspeakers or individual microphones arranged in a row like the straight radiator group | |
| DE968466C (en) | Pressure chamber loudspeaker, especially with a dome membrane | |
| DE1130856B (en) | Loudspeaker arrangement for multi-channel stereophony | |
| DE575982C (en) | Bell jar | |
| DE737117C (en) | Dynamic speaker | |
| DE836956C (en) | Microphone with acoustic transit time element acting on the sound to one side of the membrane | |
| DE514719C (en) | Electromagnetic sound device |