DE441120C - Public address system - Google Patents

Public address system

Info

Publication number
DE441120C
DE441120C DES70976D DES0070976D DE441120C DE 441120 C DE441120 C DE 441120C DE S70976 D DES70976 D DE S70976D DE S0070976 D DES0070976 D DE S0070976D DE 441120 C DE441120 C DE 441120C
Authority
DE
Germany
Prior art keywords
volume
room
auditorium
microphones
loudspeakers
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
Application number
DES70976D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
Publication date
Priority to DES70976D priority Critical patent/DE441120C/en
Application granted granted Critical
Publication of DE441120C publication Critical patent/DE441120C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00Public address systems

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Claims (1)

Siemens & Halske Akt-Ges. in Berim-Siemensstadt*).Siemens & Halske Akt-Ges. in Berim-Siemensstadt *). Lautsprecheranlage.
Patentiert im Deutschen Reiche vom 31. Juli 1925 ab.
Public address system.
Patented in the German Empire on July 31, 1925.
Man hat vielfach versucht, däe Sprache eines Redhers an allen Stellen eines großen Raumes verständlich zu machen, indem man mit Hilfe von mehreren Lautsprechern die Sprache an verschiedenen Punkten des Raumes wiedergab. Der gleiche Weg wurde zur Wiedergabe von Musik eingeschlagen. Es hat sich nun gezeigt, daß die Aufmerksamkeit der Zuhörer sofort stark nachläßt, wenn die Lautstärke einen bestimmten Werf unterschreitet. Many attempts have been made to find the language of a Redher in all parts of a large one To make the room understandable by using several loudspeakers to make the Reproduced speech at different points in the room. The same path was used to Playing music struck. It has now been shown that attention the listener immediately slacks off when the volume falls below a certain throw. Stellt man nun gemäß der Erfindung im Zuhörerraum Schallempfänger, z. B. normale Kohlemikrophone, auf und kontrolliert mit Hilfe einer Wiedergabevorrichtung die Lautstärke im Zuhörerraum, so kann man hiernach die den Lautsprechern zugef ührie Energie derart regeln, daß eine ausreichende Lautstärke erzielt wird.If you now set according to the invention in the auditorium sound receiver, z. B. normal Carbon microphones, and controls the volume with the help of a playback device In the auditorium, the energy supplied to the loudspeakers can then be regulated in such a way that the volume is sufficient is achieved. In der Abbildung ist ein Ausführungsbeispiel der Erfindung dargestellt. Mit ι ist derIn the figure, an embodiment of the invention is shown. With ι is the Zuhörerraum bezeichnet, mit 2 ein Raum, der zur Aufnahme der Verstärker 3 bestimmt ist. 4 ist das Aufnahmemikrophon, von welchem aus über die Verstärker 3 die Lautsprecher 5 25 besprochen werden. Zur Überwachung der Lautstärke sind die Mikrophone 6,7 und 8 vorgesehen, die nacheinander durch den Umschalterg an das Telephon 10 angeschlossen werden können. Die Prüfung der Lautstärke 30 ist somit an verschiedenen Stellen des Raumes möglich.Auditorium denotes, with 2 a room which is intended to accommodate the amplifier 3. 4 is the recording microphone, from which the loudspeakers 5 25 via the amplifier 3 be discussed. Microphones 6, 7 and 8 are used to monitor the volume provided, which are successively connected to the telephone 10 through the switchgear can be. The volume test 30 is thus at different points in the room possible. Durch eine dauernde Kontrolle der Lautstärke und auch der Klangreinheit kann man die anfangs erwähnten Übelstämdie beseitigen.By constantly checking the volume and the purity of the sound, you can eliminate the evils mentioned at the beginning. PATENTAJiSPRUCH:PATENTAJi CLAIM: Lautsprecher anlage,gekennzeichnet durch ein oder mehrere Mikrophone im Zuhörerraum, mit deren Hilfe die Lautstärke von einer außerhalb dieses Raumes liegenden Stelle aus überwacht werden kann.Loudspeaker system, characterized by one or more microphones in the auditorium, with the help of which the volume can be monitored from a location outside this room. *) Von dein Pittentsucher ist ctls der Erfinder angegeben worden:*) Your Pittentsucher ctls of the inventor has been given: Dr. Hans Ger dien in Berlin-Grunewald.Dr. Hans Ger served in Berlin-Grunewald.
DES70976D Public address system Expired DE441120C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES70976D DE441120C (en) Public address system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES70976D DE441120C (en) Public address system

Publications (1)

Publication Number Publication Date
DE441120C true DE441120C (en) 1927-02-22

Family

ID=7502155

Family Applications (1)

Application Number Title Priority Date Filing Date
DES70976D Expired DE441120C (en) Public address system

Country Status (1)

Country Link
DE (1) DE441120C (en)

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