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DE573986C - Large-area loudspeaker membrane, the scope of which is to be thought of as being circumscribed by a driving beam that is constantly changing in length - Google Patents

Large-area loudspeaker membrane, the scope of which is to be thought of as being circumscribed by a driving beam that is constantly changing in length

Info

Publication number
DE573986C
DE573986C DEL76385D DEL0076385D DE573986C DE 573986 C DE573986 C DE 573986C DE L76385 D DEL76385 D DE L76385D DE L0076385 D DEL0076385 D DE L0076385D DE 573986 C DE573986 C DE 573986C
Authority
DE
Germany
Prior art keywords
circumscribed
membrane
thought
length
scope
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
Application number
DEL76385D
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
Publication date
Priority to DEL76385D priority Critical patent/DE573986C/en
Application granted granted Critical
Publication of DE573986C publication Critical patent/DE573986C/en
Expired 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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Description

Es sind bereits elliptische Membranen bekannt, die gegenüber den übrigen runden Membranen den Vorzug haben, daß sie infolge der wechselnden Länge der von der Mitte ab gerechneten Strahlen ein breiteres Frequenzband gleichmäßig wiedergeben.Elliptical membranes are already known that are round compared to the rest Membranes have the advantage that they are wider because of the changing length of the rays starting from the center Reproduce frequency band evenly.

Die im folgenden erläuterte Anordnung bezweckt die Verbesserung einer derartigen Membran mit elliptischer Grundform.The arrangement explained below aims to improve such Membrane with an elliptical basic shape.

Um nämlich das Frequenzband gegenüber der bekannten elliptischen Membran noch zu verbreitern, wird die Membran in Richtung der kleinen Achse mit Einschnürungen, versehen. In order to increase the frequency band compared to the well-known elliptical membrane widen, the membrane is provided with constrictions in the direction of the minor axis.

Dadurch wird der Unterschied zwischen dem längsten und kürzesten Strahl der Membran und dementsprechend der Umfang des wiederzugebenden Frequenzbandes vergrößert. Eine solche Membran ist in der Abb. 1 dargestellt, α und c bezeichnen die beiden Achsen der Ellipse, b die Einschnürung; mit / sind die einzelnen Strahlen der Membran bezeichnet. Die Membran kann auch Konusform erhalten.This increases the difference between the longest and shortest beam of the membrane and accordingly the size of the frequency band to be reproduced. Such a membrane is shown in Fig. 1, α and c denote the two axes of the ellipse, b the constriction; with / are the individual rays of the membrane. The membrane can also have a cone shape.

Ein Konus entsteht, wenn in dem ebenen Ausgangsmaterial der Membran an Stelle der kleinen Achse ein sektorf örmiger Ausschnitt g (Abb. 2) vorgesehen wird. Die große Achse ist dann bei der Grundform der Membran in der Mitte geknickt und bildet einen Winkel. Werden die Kanten des sektorf örmigen Ausschnittes miteinander, z. B. durch Kleben, verbunden, so entsteht die Konusform. Abb. 3 zeigt eine solche in ein Lautsprechergehäuse eingebaute Membran. A cone is created when a sector-shaped cutout g (Fig. 2) is provided in the flat starting material of the membrane instead of the minor axis. The major axis is then bent in the middle of the basic shape of the membrane and forms an angle. If the edges of the sector-shaped cutout with one another, z. B. by gluing, connected, the cone shape is created. Fig. 3 shows such a membrane built into a loudspeaker housing.

Die Membran kann aus Papier, Holz, Preßmaterial oder Metall hergestellt werden. Sie kann bei Schallgeräten aller Art Verwendung finden.The membrane can be made of paper, wood, pressed material or metal. she can be used with sound devices of all kinds.

Claims (2)

Patentansprüche:Patent claims: ι. Großflächenlautsprechermembran, deren Umfang von. einem stetig in seiner Länge veränderlichen Fahrstrahl umschrieben zu denken ist, dadurch, gekennzeichnet, daß die Grundform einer Ellipse mit seitlichen Einschnürungen in Richtung, der kleinen Achse ähnelt.ι. Large area loudspeaker membrane, the scope of which is from. one steady in his The length of the variable beam is to be thought of as circumscribed, characterized in that, that the basic shape of an ellipse with lateral constrictions in the direction resembles the minor axis. 2. Großflächenlautsprechermembran nach Anspruch 1, dadurch gekennzeichnet, daß durch, ein- oder beidseitige sektorförmige Ausschnitte (von 30 bis 6o°) in die Grundform und durch Vereinigung der nebeneinanderliegenden Schnittkanten ein konusförmiger Schallstrahler geschaffen wird.2. Large area loudspeaker diaphragm according to claim 1, characterized in that through, unilateral or bilateral sector-shaped Cut-outs (from 30 to 60 °) into the basic shape and by combining the adjacent ones Cut edges a conical sound emitter is created. Hierzu 1 Blatt Zeichnungen '1 sheet of drawings'
DEL76385D Large-area loudspeaker membrane, the scope of which is to be thought of as being circumscribed by a driving beam that is constantly changing in length Expired DE573986C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL76385D DE573986C (en) Large-area loudspeaker membrane, the scope of which is to be thought of as being circumscribed by a driving beam that is constantly changing in length

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL76385D DE573986C (en) Large-area loudspeaker membrane, the scope of which is to be thought of as being circumscribed by a driving beam that is constantly changing in length

Publications (1)

Publication Number Publication Date
DE573986C true DE573986C (en) 1933-04-07

Family

ID=7283934

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL76385D Expired DE573986C (en) Large-area loudspeaker membrane, the scope of which is to be thought of as being circumscribed by a driving beam that is constantly changing in length

Country Status (1)

Country Link
DE (1) DE573986C (en)

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