EP1777988A3 - Verbesserungen an einem Beschallungssystem mit Gebietsisolatorsschaltungen - Google Patents

Verbesserungen an einem Beschallungssystem mit Gebietsisolatorsschaltungen Download PDF

Info

Publication number
EP1777988A3
EP1777988A3 EP06255349A EP06255349A EP1777988A3 EP 1777988 A3 EP1777988 A3 EP 1777988A3 EP 06255349 A EP06255349 A EP 06255349A EP 06255349 A EP06255349 A EP 06255349A EP 1777988 A3 EP1777988 A3 EP 1777988A3
Authority
EP
European Patent Office
Prior art keywords
signal
public address
signal wires
pass
address system
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.)
Granted
Application number
EP06255349A
Other languages
English (en)
French (fr)
Other versions
EP1777988B1 (de
EP1777988A2 (de
Inventor
Eric c/o Protec Fire Detection Plc Priest
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.)
Protec Fire Detection PLC
Original Assignee
Protec Fire Detection PLC
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 Protec Fire Detection PLC filed Critical Protec Fire Detection PLC
Publication of EP1777988A2 publication Critical patent/EP1777988A2/de
Publication of EP1777988A3 publication Critical patent/EP1777988A3/de
Application granted granted Critical
Publication of EP1777988B1 publication Critical patent/EP1777988B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H04R29/007—Monitoring arrangements; Testing arrangements for public address systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H04R3/12—Circuits for transducers for distributing signals to two or more loudspeakers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Amplifiers (AREA)
  • Near-Field Transmission Systems (AREA)
  • Selective Calling Equipment (AREA)
EP06255349A 2005-10-20 2006-10-17 Verbesserungen an einem Beschallungssystem mit Gebietsisolatorsschaltungen Not-in-force EP1777988B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0521337A GB2432091B (en) 2005-10-20 2005-10-20 Improvements to a public address system having zone isolator circuits

Publications (3)

Publication Number Publication Date
EP1777988A2 EP1777988A2 (de) 2007-04-25
EP1777988A3 true EP1777988A3 (de) 2008-05-28
EP1777988B1 EP1777988B1 (de) 2009-08-12

Family

ID=35458343

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06255349A Not-in-force EP1777988B1 (de) 2005-10-20 2006-10-17 Verbesserungen an einem Beschallungssystem mit Gebietsisolatorsschaltungen

Country Status (4)

Country Link
EP (1) EP1777988B1 (de)
AT (1) ATE439744T1 (de)
DE (1) DE602006008402D1 (de)
GB (1) GB2432091B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3731539B1 (de) * 2017-12-22 2025-08-06 Toa Corporation Rundfunksystem
EP4134954B1 (de) * 2021-08-09 2023-08-02 OPTImic GmbH Verfahren und vorrichtung zur audiosignalverbesserung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB523057A (en) * 1938-11-24 1940-07-04 Guided Radio Corp Improvements in telephone and like electric signalling systems
EP0967833A2 (de) * 1998-06-27 1999-12-29 Protec Fire Detection Plc Beschallungssystem mit Gebietsisolatorsschaltungen
US20040184598A1 (en) * 2001-10-30 2004-09-23 Integration Associates Inc. Method and apparatus for isolation in a Caller ID or call monitor interface circuit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989908A (en) * 1975-06-26 1976-11-02 General Signal Corporation Speaker supervision in a public address system
DE3627960C1 (en) * 1986-08-18 1987-09-03 Philips Patentverwaltung Monitoring device for loudspeaker installations
GB2299238B (en) * 1995-03-22 1997-06-11 Audix Communications Limited Loudspeaker and loudspeaker system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB523057A (en) * 1938-11-24 1940-07-04 Guided Radio Corp Improvements in telephone and like electric signalling systems
EP0967833A2 (de) * 1998-06-27 1999-12-29 Protec Fire Detection Plc Beschallungssystem mit Gebietsisolatorsschaltungen
US20040184598A1 (en) * 2001-10-30 2004-09-23 Integration Associates Inc. Method and apparatus for isolation in a Caller ID or call monitor interface circuit

Also Published As

Publication number Publication date
GB2432091B (en) 2009-06-17
EP1777988B1 (de) 2009-08-12
ATE439744T1 (de) 2009-08-15
GB2432091A (en) 2007-05-09
EP1777988A2 (de) 2007-04-25
DE602006008402D1 (de) 2009-09-24
GB0521337D0 (en) 2005-11-30

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