DE316403C - - Google Patents
Info
- Publication number
- DE316403C DE316403C DENDAT316403D DE316403DA DE316403C DE 316403 C DE316403 C DE 316403C DE NDAT316403 D DENDAT316403 D DE NDAT316403D DE 316403D A DE316403D A DE 316403DA DE 316403 C DE316403 C DE 316403C
- Authority
- DE
- Germany
- Prior art keywords
- telephones
- noise
- telephone
- switch
- soundproof
- 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.)
- Active
Links
- 239000012528 membrane Substances 0.000 description 1
- 230000035945 sensitivity Effects 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
- H04R27/00—Public address systems
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
- Mobile Radio Communication Systems (AREA)
Description
Die Erfindung betrifft eine Anordnung zum. Hörbarmachen von Geräuschen, die immer dort Anwendung, finden kann, wo die Ohren durch Telephone schalldicht abgeschlossen sind und Geräusche mitgehört wer- j den sollen, die sonst durch den schalldichten ' Abschluß der Ohren unhörbar sein würden. Dies ist z.B. auf Flugzeugen der Fall, wo ] die Ohren zum Empfang drahtloser Nachrichten durch Telephone und schalldichte Kappen derart von dem Außenräum abgeschlossen sind, daß das Geräusch des Flugzeuges nicht gehört werden kann. Andererseits bietet aber gerade dieses Geräusch dem !The invention relates to an arrangement for. Heard making noises that may apply, wherever the ears soundproof by telephone have been completed and sounds overheard advertising j the will that would otherwise be inaudible through the soundproof 'completion of the ears. This is the case, for example, on aircraft where the ears for receiving wireless messages by telephones and soundproof caps are closed off from the outside space in such a way that the noise of the aircraft cannot be heard. On the other hand, it is precisely this noise that offers that!
Führer des Flugzeuges den wichtigsten Anhaltspunkt für das . gute Arbeiten des Motors sowie für das Eintreten der durch die Steuerung auszugleichenden Böen.Guide the aircraft the most important clue for that. good engine work as well as for the occurrence of the gusts to be compensated by the control.
Gemäß der Erfindung wird nun ein Mithören von Außengeräuschen bei auf Flugzeugen u. dgl.. ; befindlichen Nachrichten-Empfangsvorrichtungen mit schalldicht an das Ohr gelegten Telephonen dadurch ermöglicht, daß die Außengeräusche, z. B. das Motorgeräusch, mittels mikrophonischer oder telephonischer Apparate in an sich bekannter Weise in elektrische Stromschwankungen umgesetzt und so den Telephonen zugeleitet werden. Hierbei können Schalter vorgesehen sein, mittels deren der zum Empfang der Nachrichten dienende Apparat und die Geräuschaufnehmevorrichtung zusammen oder einzeln mit den die Ohren schalldicht abschließenden Telephonen verbunden werden können.According to the invention, a listening of ambient noise is now in airplanes and the like ...; located message receiving devices with soundproof phones placed on the ear enables the fact that the outside noise, z. B. the engine noise, converted into electrical current fluctuations by means of microphones or telephones in a manner known per se and thus fed to the telephones. In this case, switches can be provided, by means of which the apparatus serving to receive the messages and the noise pickup device can be connected together or individually to the telephones that seal the ears in a soundproof manner.
In Fig. ι ist die Einrichtung, eingebaut in ein Flugzeug, schematisch dargestellt, ι ist der Empfangsapparat für' drahtlose TeIegraphie oder Telephonic oder ein sonstiger Apparat, welcher telephonische Signale abgibt. 2 ist die . Fliegerkappe mit völlig schalldicht eingeschlossenen. Telephonen. 3 ist eine mikrophonartige Einrichtung, und zwar entweder ein gewöhnliches Mikrophon oder auch ein solches mit verstärkter Membran, gegebenenfalls auch ein als Mikrophon verwendetes Telephon, ein Schüttelmikrophon o. dgl. 4 ist ein. Umschalter, welcher gestattet, die Zuleitung zu den Telephonen 2 entweder auf den Apparat 1 oder auf den g0 In Fig. Ι the device, installed in an aircraft, is shown schematically, ι is the receiving apparatus for 'wireless telegraphy or telephone or some other apparatus which emits telephone signals. 2 is the. Aviator cap with completely soundproof enclosed. Telephones. 3 is a microphone-like device, namely either an ordinary microphone or one with a reinforced membrane, possibly also a telephone used as a microphone, a shaking microphone or the like. 4 is a. Changeover switch, which allows the line to the telephones 2 either to the apparatus 1 or to the g 0
Apparat 3 zu schalten.To switch apparatus 3.
Fig. 2. zeigt die Schaltung der Einrichtung. 3 ist dasi vorzugsweise nach allen Richtungen drehbar gelagerte, als Geräuschaufnehmer wirkende Telephon. Die Verwendung eines Telephons als Mikrophon ist deswegen günstig, weil das Telephon die Außergeräusche fast völlig . genau wiedergibt und keine bemerkbaren Verzerrungen bewirkt. Bei der außerordentlich großen Lautstärke im Flugzeuge reicht die Empfindlichkeit des Telephons; als Mikrophon völlig aus, so.daß man noch den besonderen Vorteil hat, keine Batterie zu brauchen. Die beiden Anschlußleitungen des Telephons 3 sind an den Umschalter 4 geführt, welcher Vorzugsweise in seiner Ruhelage die .Fliegerkappentelephone 2 auf den Apparat 1 und durch einen Druck in der Richtung des Pfeiles aufFig. 2 shows the circuit of the device. 3 is dasi preferably after all Directional rotatable telephone acting as a sound pick-up. The usage a telephone as a microphone is cheap because the telephone is the Extra noise almost completely. accurately reproduces and causes no noticeable distortion. With the extraordinarily large one Volume in the aircraft is sufficient for the sensitivity of the telephone; as a microphone completely off, so that you still have the special advantage of not needing a battery. The two Connection lines of the telephone 3 are led to the switch 4, which is preferably in its rest position the .Fliegerkappentelephone 2 on the apparatus 1 and through a pressure in the direction of the arrow
' das Telephon oder Mikrophon 3 schaltet. y0 'the telephone or microphone 3 switches. y 0
Claims (2)
10 The guide is therefore always able to make the outside noise audible and then take his measures: You can do that too ! Telephone 3 in parallel with. switch the telephones 2, as FIG. 3 shows, and then only needs to switch on a pressure contact 4 in the one supply line, which connects the apparatus 3 to the telephones 2 at any desired moment.
10
Publications (1)
Publication Number | Publication Date |
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DE316403C true DE316403C (en) |
Family
ID=569112
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT316403D Active DE316403C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE316403C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4374301A (en) * | 1980-09-18 | 1983-02-15 | Gentex Corporation | Local external communication device for enclosed helmet and mask assembly |
-
0
- DE DENDAT316403D patent/DE316403C/de active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4374301A (en) * | 1980-09-18 | 1983-02-15 | Gentex Corporation | Local external communication device for enclosed helmet and mask assembly |
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