AT119690B - Device for recording and reproducing acoustic signals by electromagnetic means. - Google Patents

Device for recording and reproducing acoustic signals by electromagnetic means.

Info

Publication number
AT119690B
AT119690B AT119690DA AT119690B AT 119690 B AT119690 B AT 119690B AT 119690D A AT119690D A AT 119690DA AT 119690 B AT119690 B AT 119690B
Authority
AT
Austria
Prior art keywords
recording
acoustic signals
electromagnetic means
reproducing acoustic
reproducing
Prior art date
Application number
Other languages
German (de)
Original Assignee
Telegraphie Patent Syndikat
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Telegraphie Patent Syndikat filed Critical Telegraphie Patent Syndikat
Application granted granted Critical
Publication of AT119690B publication Critical patent/AT119690B/en

Links

Landscapes

  • Control Of Amplification And Gain Control (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Vorrichtung zum Aufzeichnen und zur Wiedergabe akustischer Zeichen auf elektro- magnetischem Wege. 
 EMI1.1 
 

 <Desc/Clms Page number 2> 

 Magnetsystempaare, durch die Benutzung verschiedenartiger Mittel zur Erreichung des gleichen Verstärkungsgrades in beiden Stromkreisen und durch verschiedene Eigenschwingung der Lautsprecher. 



   Soll aber das Magnetsystempaar 6 zur Löschung Verwendung finden, braucht nur der Umschalter 8 entsprechend umgelegt werden, so dass der Strom der Batterie 7 dem Magnetsystempaar 5 zugeführt wird. 



   PATENT-ANSPRÜCHE :
1. Vorrichtung zum Aufzeichnen und zur Wiedergabe akustischer Zeichen auf elektromagnetischem Wege, wobei die Abnahme des Phonogramms durch zwei in ihrer Entfernung voneinander   veränderliche   Magnetsystempaare mit besonderen Verstärkereinrichtungen erfolgt, dadurch gekennzeichnet, dass das eine Magnetsystempaar zur Wiedergabe u n d zur Löschung Verwendung finden kann.



   <Desc / Clms Page number 1>
 



  Device for recording and reproducing acoustic signals by electromagnetic means.
 EMI1.1
 

 <Desc / Clms Page number 2>

 Magnet system pairs, through the use of different means to achieve the same gain in both circuits and through different natural oscillation of the loudspeakers.



   However, if the pair of magnet systems 6 is to be used for extinguishing, the switch 8 only needs to be turned over accordingly so that the current from the battery 7 is fed to the pair of magnet systems 5.



   PATENT CLAIMS:
1. Device for recording and reproducing acoustic signs by electromagnetic means, the phonogram being picked up by two pairs of magnet systems which can be varied in their distance from one another with special amplifier devices, characterized in that one pair of magnet systems can be used for reproduction and deletion.

Claims (1)

2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass zur Erzielung des gleichen Verstärkungsgrades für die Wiedergabe bei einem Magnetsystempaar veränderliche Widerstände, beim andern veränderliche Kondensatoren benutzt werden. 2. Device according to claim 1, characterized in that in order to achieve the same degree of amplification for the reproduction variable resistors are used in one magnet system pair and variable capacitors in the other. 3. Vorrichtung nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass die Eigenschwingungen der Wiedergabelautsprecher verschieden abgestimmt sind. EMI2.1 3. Device according to claims 1 and 2, characterized in that the natural vibrations of the playback speakers are matched differently. EMI2.1
AT119690D 1929-11-27 1929-11-27 Device for recording and reproducing acoustic signals by electromagnetic means. AT119690B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT119690T 1929-11-27

Publications (1)

Publication Number Publication Date
AT119690B true AT119690B (en) 1930-11-10

Family

ID=3631612

Family Applications (1)

Application Number Title Priority Date Filing Date
AT119690D AT119690B (en) 1929-11-27 1929-11-27 Device for recording and reproducing acoustic signals by electromagnetic means.

Country Status (1)

Country Link
AT (1) AT119690B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE758309C (en) * 1939-02-23 1954-05-10 Siemens & Halske A G Device for achieving a reverberation effect

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE758309C (en) * 1939-02-23 1954-05-10 Siemens & Halske A G Device for achieving a reverberation effect

Similar Documents

Publication Publication Date Title
AT119690B (en) Device for recording and reproducing acoustic signals by electromagnetic means.
DE524082C (en) Loudspeaker with several electrical drive systems working according to different principles
DE2938938A1 (en) HI=FI sound reproduction circuit - is used in record player or tape recorder and has bass and treble loudspeakers connected via resonant circuits to shared inputs
AT128742B (en) Loudspeaker system with filter.
DE867308C (en) Method for stereophonic recording and reproduction of sound vibrations
AT122771B (en) Electromechanical or electroacoustic device.
AT110472B (en) Recording device for acoustic performances.
AT201139B (en) Membrane and with it equipped small electroacoustic transducer
DE888621C (en) Circuit arrangement for devices for the optional recording and playback of magnetic sound recordings
DE726439C (en) Loudspeaker system for the sound supply of larger areas or rooms
CH142506A (en) Device for recording and reproducing acoustic signals by electromagnetic means.
AT83920B (en) Sound wave carrier.
DE863212C (en) Arrangement for monitoring stereo sound recordings with two loudspeakers
AT216048B (en) Device for the stereophonic reproduction of signals
AT94698B (en) Circuit arrangement for the electrical transmission of acoustic frequencies.
AT112542B (en) Speaker.
AT132146B (en) Record and electric sound reproducing device for the same.
DE603713C (en) Device for producing magnetograms
AT53922B (en) Device for reproducing Edison script by magnetic means.
CH241448A (en) Method and device for stereophonic sound transmission.
AT134573B (en) Device for regulating the volume for electrical speech apparatus.
AT147993B (en) Modulation device for sounding telegraphy from transmitters.
CH221987A (en) Steel tone machine.
CH148301A (en) Amplifier circuit for radio and record playback.
GB325699A (en) Improvements in and relating to the reproduction of sound by electro-magnetic means