DE545758C - Airborne sound transmitter - Google Patents
Airborne sound transmitterInfo
- Publication number
- DE545758C DE545758C DES61368D DES0061368D DE545758C DE 545758 C DE545758 C DE 545758C DE S61368 D DES61368 D DE S61368D DE S0061368 D DES0061368 D DE S0061368D DE 545758 C DE545758 C DE 545758C
- Authority
- DE
- Germany
- Prior art keywords
- resonator
- airborne sound
- sound transmitter
- membrane
- record
- 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
- 230000010355 oscillation Effects 0.000 claims 1
- 239000012528 membrane Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 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
- H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
-
- 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
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/225—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only for telephonic receivers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Electromagnetism (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Description
Luftschallsender In dem Patent 468 887 ist ein luftakustischer Apparat zur Aufnahme oder Übertragung. der Schallenergie aus der Luft oder auf dieselbe beschrieben worden, bei dem zwischen dem Medium und der eigentlichen Sende- oder Empfangsstelle ein auf die zu übertragende Frequenz abgestimmter Luftraum (Helmholtzscher Resonator) eingeschaltet ist.Airborne Sound Transmitter In patent 468,887 is an air acoustic apparatus for recording or transmission. the sound energy from the air or on the same has been described in which between the medium and the actual broadcast or Receiving center an airspace that is matched to the frequency to be transmitted (Helmholtzscher Resonator) is switched on.
Es hat sich nun gezeigt, daß die Abstimmung des aus zwei Systemen, einerseits der Membran, andererseits dem Resonator, bestehenden Gebildes Schwierigkeiten macht, weil bei der Abstimmung die bei der Kopplung der beiden Gebilde gegenseitig einlaufenden Massen berücksichtigt werden müssen.It has now been shown that the coordination of the two systems, on the one hand the membrane, on the other hand the resonator, existing structure difficulties makes, because in the coordination of the coupling of the two structures mutually incoming masses must be taken into account.
Gegenstand der Erfindung ist die Schaffung ganz klarer Abstimmungsverhältnisse bei solchen Apparaten. Die Erfindung besteht darin, daß die elastische Kraft der Membran auf ein Mindestmaß herabgesetzt wird und der Resonator, der mit dieser Membran gekoppelt wird, in seiner Elastizität so bemessen wird, daß diese im wesentlichen die Abstimmung des aus Luftraum und Schallplatte bestehenden Systems bestimmt, daß also der Schallapparat nur noch einwellig ist. Durch diese Maßnahme werden die Schwierigkeiten bei der Abstimmung gänzlich vermieden.The object of the invention is to create very clear voting relationships with such devices. The invention consists in that the elastic force of the Diaphragm is minimized and the resonator that works with this diaphragm is coupled, is dimensioned in its elasticity so that this substantially the coordination of the system consisting of airspace and record determines that So the sound apparatus is only single-wave. By doing this, the difficulties become entirely avoided in the vote.
Die nahezu aperiodisch schwingende Membran wird zweckmäßig in der bekannten Form einer Kolbenmembran mit einem als starre Platte ausgebildeten Mittelteil und einer leicht biegsamen Randzone, die in sich wieder durch irgendwelche Mittel versteift sein kann, ausgebildet. Die Erfindung ist an Hand eines Ausführungsbeispieles dargestellt. Dasselbe zeigt einen Luftschallsender mit einem als Strahlungsorgan wirkenden Resonator, der mit der Energieumwandlungsvorrichtung durch eine nahezu aperiodisch schwingende Membran verbunden ist.The almost aperiodic vibrating membrane is useful in the known form of a piston diaphragm with a central part designed as a rigid plate and a slightly flexible edge zone, which is restored in itself by some means can be stiffened, trained. The invention is based on an exemplary embodiment shown. The same thing shows an airborne sound transmitter with a radiating organ acting resonator, which is connected to the energy conversion device by a nearly aperiodically vibrating membrane is connected.
In der Abbildung ist der Resonator mit z, die Membran mit 2 und das Energieumwandlungsorgan mit 3 bezeichnet. Die Membran 2 besteht aus dem starren Mittelteil q. und der weichen Randzone 5, die durch Rippen 6 wiederum' versteift ist. Außerdem ist an der Membran ein Anker 7 befestigt, der durch den von der Wechselstrommaschine 8 gespeisten Magneten g betätigt wird.In the picture the resonator is with z, the membrane with 2 and the Energy conversion organ designated by 3. The membrane 2 consists of the rigid Middle part q. and the soft edge zone 5, which is in turn stiffened by ribs 6 is. In addition, an armature 7 is attached to the membrane, which by the alternating current machine 8 powered magnets g is operated.
Die Erfindung ist nicht auf die dargestellte Ausführungsform, die nur ein Ausführungsbeispiel derselben ist, beschränkt. Es kann z. B. die Ausbildung der Membran auch eine beliebig andere sein, wenn sie nur die Bedingung erfüllt, daß ihre elastische Kraft relativ gering ist.The invention is not limited to the illustrated embodiment only one embodiment thereof is limited. It can e.g. B. the training the membrane can also be any other if it only fulfills the condition that their elastic force is relatively small.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES61368D DE545758C (en) | 1920-10-28 | 1922-11-11 | Airborne sound transmitter |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES54614D DE468887C (en) | 1920-10-28 | 1920-10-28 | Airborne sound transmitter |
| DES61368D DE545758C (en) | 1920-10-28 | 1922-11-11 | Airborne sound transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE545758C true DE545758C (en) | 1932-03-26 |
Family
ID=25995418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES61368D Expired DE545758C (en) | 1920-10-28 | 1922-11-11 | Airborne sound transmitter |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE545758C (en) |
-
1922
- 1922-11-11 DE DES61368D patent/DE545758C/en not_active Expired
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