DE454175C - Device for amplifying the sound effect in telephones u. Like. With two opposing membranes - Google Patents

Device for amplifying the sound effect in telephones u. Like. With two opposing membranes

Info

Publication number
DE454175C
DE454175C DET29721D DET0029721D DE454175C DE 454175 C DE454175 C DE 454175C DE T29721 D DET29721 D DE T29721D DE T0029721 D DET0029721 D DE T0029721D DE 454175 C DE454175 C DE 454175C
Authority
DE
Germany
Prior art keywords
telephones
amplifying
sound effect
membranes
sound
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
DET29721D
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.)
Telefunken AG
Original Assignee
Telefunken AG
Publication date
Priority to DET29721D priority Critical patent/DE454175C/en
Application granted granted Critical
Publication of DE454175C publication Critical patent/DE454175C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/403Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Fuel Cell (AREA)

Description

Es ist bei Telephonen bekannt, zwei Membranen in geringem Abstande parallel zueinander anzuordnen, so daß die Schallwellen aus dem Raum zwischen ihnen seitlich nach außen dringen. Um eine Verstärkung" der Schallwirkung bei derartigen Telephonen zu erreichen, wird erfindungsgemäß an Stelle des sonst üblichen trichterförmigen Gebildes ein Schallraum geschaffen, der durch zweiIt is known in telephones, two membranes at a small distance parallel to each other to be arranged so that the sound waves from the space between them penetrate laterally to the outside. To reinforce "the Achieving a sound effect in such telephones is, according to the invention, in place the otherwise usual funnel-shaped structure created a sound space, which is divided by two

to einander gegenüberstehende Umdrehungsflächen begrenzt ist, die eine zwischen ihnen durchgeführte Mittelebene nicht schneiden. Das einfachste Beispiel eines solchen Schallraumes ist der Raum zwischen zwei kreisrunden ebenen Platten, in deren Zentrum je ein Telephon angeordnet ist. Erzeugen die beiden Telephone gleichphasige Schallschwingungen, so findet eine verstärkende Wirkung statt. Statt die Platten eben und parallel anzuordnen, ist es vorteilhafter, deren gegenseitigen Abstand in bei Schalltrichtern bekannter Art mit der Entfernung vom Mittelpunkt veränderlich zu machen, derart, daß der gegenseitige Abstand der Flächen von der Mitte bzw. von den Membranen aus nach dem Rande zu sich vergrößert. Zur Vermeidung von störenden Eigenschwingungen! der den Schallraum begrenzenden Flächen ist es zweckmäßig, den akustischen Raum durch radiale Scheidewände in einzelne Fächer zu zerlegen, so daß die ganze Anordnung eine Art von einzeln zusammengesetzten Schalltrichtern bildet.to opposing surfaces of revolution is limited, the one between them Do not cut through the middle plane. The simplest example of such a sound room is the space between two circular flat plates, each with a telephone in the center. Generate the sound vibrations in phase with both telephones, this has an amplifying effect instead of. Instead of arranging the plates flat and parallel, it is more advantageous to have their mutual To make the distance in a known manner with the distance from the center point variable, such that the mutual distance between the surfaces from the center or from the membranes enlarged to the edge. To avoid disruptive natural vibrations! the Areas delimiting the sound space it is useful to pass through the acoustic space to disassemble radial partitions into individual compartments, so that the whole arrangement is one Kind of individually assembled horns.

Eine Ausführungsform ist in der Abbildung dargestellt, die einen Schnitt durch die beiden Flächen F1 und F2 zeigt, wobei im Zentrum einer jeden Fläche die Telephone, J1 und T2 angeordnet sind. Die Versteifung der Flächen kann auch durch Anordnung von radialen Rippen jeder einzelnen Fläche für sich außerhalb des Schallraumes erfolgen.An embodiment is shown in the figure, which shows a section through the two surfaces F 1 and F 2 , the telephones, J 1 and T 2 being arranged in the center of each surface. The surfaces can also be stiffened by arranging radial ribs on each individual surface outside the sound space.

Claims (1)

Patentanspruch:Claim: Einrichtung zur Verstärkung der Schallwirkung bei Telephonen u. dgl. mit zwei einander gegenüberstehenden Membranen, dadurch gekennzeichnet, daß ein Schallraum zwischen zwei einander gegenüberliegenden Umdrehungsflächen gebildet wird, die eine zwischen ihnen durchgeführte Mittelebene nicht schneiden und ihren gegenseitigen Abstand von der Mitte bzw. von den Membranen aus nach dem Rande zu vergrößern.Device for amplifying the sound effect in telephones and the like with two opposing membranes, characterized in that a sound space formed between two opposing surfaces of revolution that does not intersect a median plane carried out between them and to increase their mutual distance from the center or from the membranes towards the edge.
DET29721D Device for amplifying the sound effect in telephones u. Like. With two opposing membranes Expired DE454175C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET29721D DE454175C (en) Device for amplifying the sound effect in telephones u. Like. With two opposing membranes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET29721D DE454175C (en) Device for amplifying the sound effect in telephones u. Like. With two opposing membranes

Publications (1)

Publication Number Publication Date
DE454175C true DE454175C (en) 1927-12-31

Family

ID=7555099

Family Applications (1)

Application Number Title Priority Date Filing Date
DET29721D Expired DE454175C (en) Device for amplifying the sound effect in telephones u. Like. With two opposing membranes

Country Status (1)

Country Link
DE (1) DE454175C (en)

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