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 membranesInfo
- 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
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
- 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
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)
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) |
-
0
- DE DET29721D patent/DE454175C/en not_active Expired
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