DE524198C - Loudspeaker radiating in different directions, rotatably installed in a base plate serving as a sound screen - Google Patents
Loudspeaker radiating in different directions, rotatably installed in a base plate serving as a sound screenInfo
- Publication number
- DE524198C DE524198C DER78708D DER0078708D DE524198C DE 524198 C DE524198 C DE 524198C DE R78708 D DER78708 D DE R78708D DE R0078708 D DER0078708 D DE R0078708D DE 524198 C DE524198 C DE 524198C
- Authority
- DE
- Germany
- Prior art keywords
- base plate
- different directions
- loudspeaker
- sound screen
- plate serving
- 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
- H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for loudspeakers
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Description
Nach verschiedenen Richtungen strahlender Lautsprecher, der drehbar in eine als Schallschirm dienende Grundplatte eingebaut ist Die Erfindung betrifft einen Lautsprecher, der nach verschiedenen Richtungen drehbar in eine als Schallschirm dienende Grundplatte eingebaut ist. Vorliegender Erfindung gemäß sind in dem Schallschirm besondere Hilfsflächen vorgesehen, die bei der Drehung des Lautsprechers in die verschiedene Winkelstellung den Druckausgleich zwischen der Membrane order- und -rückseite verhüten. Zweckmäßigerweise werden die mit der Grundplatte verbundenen Hilfsflächen halbkreisförmig gestaltet und an den oberen und unteren Enden durch Wände abgeschlossen.Loudspeaker radiating in different directions and rotating is built into a base plate serving as a sound screen. The invention relates to a loudspeaker that can be rotated in different directions as a sound screen serving base plate is installed. According to the present invention are in the sound screen special auxiliary surfaces are provided, which when turning the loudspeaker into the different angular position the pressure equalization between the membrane order- and -Prevent the back. Appropriately, are connected to the base plate Auxiliary surfaces designed semicircular and through at the upper and lower ends Walls completed.
Die Erfindung ist in zwei Ausführungsbeispielen in den Abbildungen dargestellt.The invention is shown in two exemplary embodiments in the figures shown.
Die schwingende Fläche 115 des Lautsprechers ist drehbar um eine Achse 114 angeordnet, die in der Ebene der gemeinsamen Grundplatte i i i liegt, und kann durch sie in verschiedene Winkelstellungen eingestellt werden. Dabei ist zu verhüten, daß, wenn die Trägerplatte i i3 gegenüber der Grundplatte unter einem Winkel verstellt ist, die niedrigeren Frequenzen um die Kanten derselben von vorn nach hinten und umgekehrt um die Membran herumlaufen. Hierdurch würde die günstige Wirkung der Lautsprecheranordnung beeinträchtigt werden, da Interferenzen zwischen den von der Vorder- und von der Rückseite ausgesandten Schallschwingungen besonders bei den tieferen Frequenzen auftreten könnten.The vibrating surface 115 of the loudspeaker is rotatable about an axis 114 arranged, which lies in the plane of the common base plate i i i, and can can be set in different angular positions by them. It is important to prevent that when the support plate i i3 is adjusted at an angle relative to the base plate is, the lower frequencies around the edges of the same from front to back and go around the membrane in reverse. This would have the beneficial effect of the loudspeaker arrangement because of interference between the front and rear Sound vibrations emitted from the rear, especially at the lower frequencies could occur.
Erfindungsgemäß werden Hilfsflächen i i7 von kreisförmigem Querschnitt vorgesehen, die mit der Fläche i i i durch Niete i 17a verbunden und die an den Enden durch Wände 118 abgeschlossen sind. Für die Zwecke der Tonwiedergabe in Auditorien, Sälen usw. empfiehlt es sich, eine Gruppenanordming mehrerer, nach verschiedenen Richtungen drehbarer Lautsprecher zu verwenden, die in eine gemeinsame, als Schallschirm dienende Grundplatte eingebaut sind. Dabei ist, wie in Abb. z dargestellt ist, jeder Lautsprecher für sich mit Hilfsflächen und Abschlußwänden versehen. In der Abb. a ist die erste und dritte Membran in der Ebene der Grundplatte i i i liegend, die zweite und vierte Membran nach verschiedenen Richtungen, um .45° dazu geneigt, dargestellt. Eine derartige Anordnung läßt bei allen Frequenzen innerhalb des Hörbereiches eine gleichmäßige Lautstärke in dem ganzen Raum erzielen, da jeder Trichter einen bestimmten Abschnitt des Raumes mit Schall versorgt.According to the invention, auxiliary surfaces i i7 have a circular cross-section provided which are connected to the surface i i i by rivets i 17a and which are attached to the Ends by walls 118 are closed. For the purpose of sound reproduction in auditoriums, Halls etc. it is advisable to arrange several groups according to different ones Direction of use of rotatable speakers that are in a joint, as a sound screen serving base plate are installed. Here, as shown in Fig. Z, everyone is Provide loudspeakers with auxiliary surfaces and end walls. In fig. a is the first and third membrane lying in the plane of the base plate i i i, the second and fourth membrane in different directions, inclined at .45 ° to it, shown. Such an arrangement leaves one at all frequencies within the audible range Achieve even volume in the whole room, as each funnel has a specific one Section of the room supplied with sound.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DER78708D DE524198C (en) | 1928-08-03 | Loudspeaker radiating in different directions, rotatably installed in a base plate serving as a sound screen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DER78708D DE524198C (en) | 1928-08-03 | Loudspeaker radiating in different directions, rotatably installed in a base plate serving as a sound screen | |
US297218A US1866831A (en) | 1928-08-03 | 1928-08-03 | Auditorium loud speaker |
Publications (1)
Publication Number | Publication Date |
---|---|
DE524198C true DE524198C (en) | 1931-05-04 |
Family
ID=25992370
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DER78708D Expired DE524198C (en) | 1928-08-03 | Loudspeaker radiating in different directions, rotatably installed in a base plate serving as a sound screen |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE524198C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE868921C (en) * | 1949-06-05 | 1953-03-02 | Siemens Ag | Loudspeaker combination with differently tuned individual loudspeakers, e.g. B. Tweeter and woofer |
DE934353C (en) * | 1948-10-02 | 1955-10-20 | Telefunken Gmbh | Arrangement for the central broadband sound supply of an airspace |
US4860363A (en) * | 1985-04-12 | 1989-08-22 | Mitsubishi Denki Kabushiki Kaisha | Loudspeaker system |
-
0
- DE DER78708D patent/DE524198C/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE934353C (en) * | 1948-10-02 | 1955-10-20 | Telefunken Gmbh | Arrangement for the central broadband sound supply of an airspace |
DE868921C (en) * | 1949-06-05 | 1953-03-02 | Siemens Ag | Loudspeaker combination with differently tuned individual loudspeakers, e.g. B. Tweeter and woofer |
US4860363A (en) * | 1985-04-12 | 1989-08-22 | Mitsubishi Denki Kabushiki Kaisha | Loudspeaker system |
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